Rt Simulation Examination 1

Reviewed by Editorial Team

The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.

Learn about Our Editorial Process

| By Wantunine

Wantunine

Community Contributor

Quizzes Created: 8 | Total Attempts: 2,687

| Attempts: 767

Questions

Feedback

During the Quiz End of Quiz

Difficulty

Easy First Hard First Sequential

1/100 Questions

The amount of radiation exposure allowable is defined by the international commission on radiological protection (ICRP).
- True
- False

About This Quiz

This is a Simulated Examination for Gulf RT Examinations taken from Last Month's HAAD Feedbacks.
This examination contains 100 of the most UPDATED EXAMS from Abu Dhabi, KSA, and UAE.
Take this examination for 120 minutes. You need to get 86% to pass the HAAD. 60% to pass MOH, DHA, or Prometrics.
Please text 0919-286-29-29 in the See morePhilippines or visit our website www. Rtonline. Weebly. Com THIS IS YOUR ASSESSMENT FOR ANY GULF RT EXAMINATIONS INCLUDING HAAD RT, SAUDI PROMETRICS, DUBAI DHA, AND UAE MOH. THE QUESTIONS HERE ARE TAKEN FROM THIS ACTUAL EXAMINATIONS, SO PASSING THIS ASSESSMENT EXAM WILL GIVE YOU A HIGH PROBABILITY OF PASSING THE SAID EXAMINATIONS

Quiz Preview

2.

The gray scale can be changed by the sonographer
- True
- Fales
Correct Answer

A. True

Explanation

The statement suggests that the gray scale in an ultrasound image can be adjusted or modified by the sonographer. This means that the sonographer has the ability to change the shades of gray in the image, which can help enhance the visibility and clarity of the structures being examined. This flexibility allows the sonographer to optimize the image quality based on the specific needs of the examination and improve the diagnostic accuracy.

Rate this question:
3.

What are the four types of Radiation?
- Alpha, Beta, Gamma and Radium
- Beta, Gamma, Isotope and Radium
- Beta, Electromagnetic, Ultra violet and Proton
- Alpha, Beta, Gamma and Background
Correct Answer

A. Alpha, Beta, Gamma and Background

Explanation

The four types of radiation are alpha, beta, gamma, and background. Alpha radiation consists of helium nuclei and is the least penetrating form of radiation. Beta radiation consists of high-energy electrons or positrons and is more penetrating than alpha radiation. Gamma radiation is electromagnetic radiation and is the most penetrating form of radiation. Background radiation refers to the low levels of radiation that are present in the environment from natural and man-made sources.

Rate this question:
4.

What piece of equipment is used to measure the radioactive decay count?
- Decay Tube
- Geiger Muller Tube
- Fordy Decay Count
- Muller Rice Tube
- Hodgsonator Decay Count Tube
Correct Answer

A. Geiger Muller Tube

Explanation

How can you not get this right.

Rate this question:
5.

Should an interlock circuit activate, an amber light will display on the main instrument panel.
- True
- False
Correct Answer

A. True

Explanation

If an interlock circuit is activated, it means that there is a safety mechanism in place that prevents certain functions or operations until certain conditions are met. In this case, if the interlock circuit is activated, it will trigger the display of an amber light on the main instrument panel. Therefore, the statement is true.

Rate this question:
6.

Put in decreasing order
- Deca
- Deci
- Micro
- Centi
Correct Answer(s)

A. Deca
A. Deci
A. Micro
A. Centi

Explanation

The given words are units of measurement prefixes, representing different magnitudes. "Deca" is the largest prefix, representing a factor of 10, followed by "deci" which represents a factor of 0.1. "Micro" represents a factor of 0.000001, making it smaller than both "deca" and "deci". "Centi" represents a factor of 0.01, making it the smallest prefix among the given options. Therefore, the correct order from largest to smallest is "deca, deci, micro, centi".

Rate this question:
7.

What radiation is used to kill cancer cells.
- Alpha
- Beta
- Gamma
- Radium
- Hooperium
Correct Answer

A. Gamma

Explanation

Gamma radiation is used to kill cancer cells because it has high energy and can penetrate deep into tissues. This type of radiation damages the DNA of cancer cells, preventing them from dividing and growing. Gamma radiation is often used in radiation therapy, where targeted doses of radiation are delivered to specific areas of the body to destroy cancer cells. It is a highly effective treatment option for various types of cancer.

Rate this question:
8.

The more pixels per inch:
- The better the temporal resolution
- The better is the spatial resolution
- The more shades of gray
- The higher the reliability
Correct Answer

A. The better is the spatial resolution

Explanation

A higher number of pixels per inch indicates a higher spatial resolution. Spatial resolution refers to the level of detail that can be captured and displayed in an image. With more pixels per inch, there are more individual dots of color or shades of gray in the image, allowing for finer details to be represented. Therefore, the better the spatial resolution is.

Rate this question:
9.

Fill in of an anechoic structure such as a cyst is known as all of the following EXCEPT?
- Partial volume artifact
- Slice thickness artifact
- Section thickness artifact
- Ghosting artifact
Correct Answer

A. Ghosting artifact

Explanation

An anechoic structure refers to a structure that does not produce any echoes or reflections of sound waves. When filling an anechoic structure like a cyst, artifacts can occur in the resulting image. Partial volume artifact refers to the appearance of a structure being partially filled due to the limited resolution of the imaging technique. Slice thickness artifact refers to the blurring or smearing of structures in the direction of the slice thickness. Section thickness artifact refers to the improper representation of the true thickness of a structure. Ghosting artifact, on the other hand, refers to the appearance of duplicated or faintly repeated structures in the image, which is not related to the filling of the anechoic structure.

Rate this question:
10.

The more pixels per inch:
- The better the temporal resolution
- The better the spatial resolution
- The more shades of gray
- The higher the reliability
Correct Answer

A. The better the spatial resolution

Explanation

The statement implies that as the number of pixels per inch increases, the spatial resolution improves. Spatial resolution refers to the ability to distinguish fine details and the higher the spatial resolution, the better the quality of the image in terms of clarity and sharpness. Therefore, the correct answer is "the better the spatial resolution".

Rate this question:
11.

Which of the following is the best lateral resolution?
- 15 mm
- 6 mm
- 0.06 cm
- 2 cm
Correct Answer

A. 0.06 cm

Explanation

The best lateral resolution is 0.06 cm. Lateral resolution refers to the ability of an imaging system to distinguish between two closely spaced objects. A smaller value indicates a higher resolution, meaning that the system can differentiate between objects that are closer together. Therefore, a lateral resolution of 0.06 cm is the best option among the given choices as it provides the highest level of detail and accuracy in distinguishing objects.

Rate this question:
12.

Radiation which has sufficient energy to remove electrons from atoms in materials through which the radiation passes is called ionizing radiation. Examples of ionizing radiation include all but:
- Alpha particle radiation
- Neutrons
- X-rays
- Radio waves
Correct Answer

A. Radio waves

Explanation

Ionizing radiation refers to radiation that has enough energy to remove electrons from atoms in materials. This process, known as ionization, can have harmful effects on living organisms and materials. Alpha particle radiation, neutrons, and x-rays are all examples of ionizing radiation, as they possess sufficient energy to ionize atoms. On the other hand, radio waves do not have enough energy to remove electrons from atoms and therefore do not fall under the category of ionizing radiation.

Rate this question:
13.

Terra / BTX feature multiple interlock circuits, which prevent the possible operation of the X-ray generating source when these interlocks are activated.
- True
- False
Correct Answer

A. True

Explanation

The statement is explaining that the Terra/BTX feature multiple interlock circuits that prevent the X-ray generating source from operating when these interlocks are activated. This means that if any of the interlocks are activated, the X-ray generating source will not be able to function. Therefore, the statement is true.

Rate this question:
14.

Terra / BTX has the ability to perform the following experiments except:
- X-ray Diffraction
- X-ray Fluorescence
- X-ray Time of Flight
Correct Answer

A. X-ray Time of Flight

Explanation

Terra / BTX has the ability to perform X-ray Diffraction and X-ray Fluorescence experiments, but it does not have the ability to perform X-ray Time of Flight experiments.

Rate this question:
15.

If we increase the frequency the near zone length is
- Increased
- Decreased
- Unchanged
Correct Answer

A. Increased

Explanation

When the frequency is increased, the near zone length is increased. This is because the near zone length is inversely proportional to the frequency. As the frequency increases, the wavelength decreases, causing the near zone length to increase.

Rate this question:
16.

Terra / BTX uses X-rays to produce the desired X-ray diffraction pattern or X-ray fluorescence spectrum. These X-rays are produced from:
- A radioactive isotope within the instrument
- A gamma ray neutron source within the instrument
- An X-ray tube operating at 30Kv
- None of the above
Correct Answer

A. An X-ray tube operating at 30Kv

Explanation

An X-ray tube operating at 30Kv is used to produce the desired X-ray diffraction pattern or X-ray fluorescence spectrum in Terra/BTX. The X-ray tube generates X-rays by accelerating electrons using a high voltage of 30Kv. These accelerated electrons collide with a metal target in the tube, resulting in the emission of X-rays. These X-rays are then used to produce the desired patterns or spectra for analysis.

Rate this question:
17.

Put these intensities in decreasing order
- SATP
- SPTP
- SATA
- SPTP, SATP, SATA
- SPTP SATA, SATP
Correct Answer

A. SPTP, SATP, SATA

Explanation

The given answer is in the correct order because it lists the intensities in decreasing order. "SPTP" has the highest intensity, followed by "SATP", and then "SATA" has the lowest intensity.

Rate this question:
18.

What component of the US unit contains the memory bank?
- Transducer
- Receiver
- Display
- Scan converter
Correct Answer

A. Scan converter

Explanation

A scan converter is a component of the US unit that contains the memory bank. It is responsible for converting the electrical signals received from the transducer into a format that can be displayed on the screen. The scan converter stores the image data in its memory bank, allowing for real-time imaging and manipulation of the image.

Rate this question:
19.

Which of the following choces determines the signal amplitude in the transducers of an ultrasound system?
- Reflected intensity of the sound beam
- Post processing
- Edge enhancement filtering
- Persistence
- Demodulation
Correct Answer

A. Reflected intensity of the sound beam

Explanation

The signal amplitude in the transducers of an ultrasound system is determined by the reflected intensity of the sound beam. As the ultrasound waves travel through the body and encounter different tissues, some of the sound waves are reflected back to the transducer. The intensity of these reflected waves determines the amplitude of the signal received by the transducer. This information is crucial for generating the ultrasound image and providing diagnostic information about the tissues being examined.

Rate this question:
20.

What determines the frequency of a sound beam from a pulsed transducer?
- Voltage applied to the PZT
- PZT thickness
- Frequency of the system
- PRF of the pulser
Correct Answer

A. PZT thickness

Explanation

The frequency of a sound beam from a pulsed transducer is determined by the thickness of the PZT. The PZT, or piezoelectric material, is responsible for converting electrical energy into mechanical vibrations. The thickness of the PZT determines the resonant frequency at which it vibrates. Therefore, the thickness of the PZT directly affects the frequency of the sound beam produced by the transducer.

Rate this question:
21.

If the spatial pulse length is 10mm, what is the axial resolution?
- 0.5 cm
- 5 cm
- 10 mm
- 1 cm
Correct Answer

A. 0.5 cm

Explanation

The axial resolution is determined by the spatial pulse length, which is the length of the pulse in the direction of the ultrasound beam. In this case, the spatial pulse length is given as 10mm. The axial resolution is defined as half of the spatial pulse length, so in this case, it would be 0.5 cm.

Rate this question:
22.

Which of the following is the best lateral resolution?
- 15 mm
- 6 mm
- 0.06 cm
- 2 cm
Correct Answer

A. 0.06 cm

Explanation

The best lateral resolution is 0.06 cm. Lateral resolution refers to the ability of an imaging system to distinguish between two closely spaced objects. In this case, a smaller value indicates a higher level of resolution, as it means the system can distinguish smaller details. Therefore, 0.06 cm is the best option among the given choices for achieving high lateral resolution.

Rate this question:
23.

What Radiation is used in smoke detectors?
- Beta
- Alpha
- Gamma
- Background
Correct Answer

A. Alpha

Explanation

This is a hard questionn so dont be worryed if uyou got it wrong.

Rate this question:

1
24.

What are the units of longitudinal resolution?
- Hertz
- Rayls
- M/s
- Feet
Correct Answer

A. Feet

Explanation

The units of longitudinal resolution are typically measured in feet. Longitudinal resolution refers to the ability to distinguish between two closely spaced objects along the direction of propagation. In various fields such as ultrasound imaging or seismic surveys, the resolution is often described in terms of the smallest distance that can be resolved, and feet is a commonly used unit for this measurement.

Rate this question:
25.

Sound is traveling from medium 1 to medium 2. Propagation speeds of M1 and M2 are 1600m/s and 1500m/s respectively. There is oblique incidence.
- Angle of incidence > angle of reflection
- Angle of incidence = angle of reflection
- Angle of incidence < angle of reflection
Correct Answer

A. Angle of incidence = angle of reflection

Explanation

When sound travels from one medium to another, the angle of incidence is equal to the angle of reflection. This is known as the law of reflection. In this scenario, the sound is traveling from medium 1 to medium 2, and the propagation speeds of M1 and M2 are given. However, the question does not provide any information about the angles of incidence and reflection. Therefore, without this information, it is not possible to determine the specific relationship between the angles.

Rate this question:
26.

The time from the beginning of a pulse until its end is__________?
- Period
- Pulse duration
- Pulse length
- PRF
Correct Answer

A. Pulse duration

Explanation

The time from the beginning of a pulse until its end is referred to as the pulse duration. This term specifically measures the length of time that a pulse of energy or signal is active or present. It is important in various fields such as telecommunications, radar systems, and medical imaging, where the duration of a pulse directly affects the quality and accuracy of the transmitted or received information.

Rate this question:
27.

What is the meaning of thermal index = 37
- A tissue temperature may rise 3 degrees Farenheit
- Tissue temperature will rise 3 degrees Celcius
- Tissue temperature may rise 3 degrees Celcius
- Microbubbles 3mm in diameter will burst
Correct Answer

A. Tissue temperature may rise 3 degrees Celcius

Explanation

The thermal index is a measure of the potential for heating or mechanical effects in tissue when exposed to ultrasound. A thermal index of 37 indicates that the tissue temperature may rise by 3 degrees Celsius. This means that there is a possibility of heating in the tissue when exposed to ultrasound at this level.

Rate this question:
28.

Enhancement, multipath and side lobes result in:
- Image distortion
- Clearer images
- Artifact
- Resolution problems
Correct Answer

A. Artifact

Explanation

Enhancement, multipath, and side lobes can result in artifacts. These are unwanted distortions or anomalies in an image that can occur due to various factors such as noise, interference, or imperfections in the imaging system. These artifacts can degrade the quality and accuracy of the image, making it less reliable for analysis or interpretation. Therefore, the presence of enhancement, multipath, and side lobes can contribute to the occurrence of artifacts in the image.

Rate this question:
29.

What artifact has a grainy appearance and is caused by the interference effects of scattered sound?
- Spackle
- Reverberation
- Slice tickness
- Speckle
- Section thickness
Correct Answer

A. Speckle

Explanation

Speckle is the correct answer because it is an artifact that has a grainy appearance and is caused by the interference effects of scattered sound. When sound waves are scattered by an object or surface, they can interfere with each other and create a grainy pattern known as speckle. This phenomenon is commonly observed in ultrasound imaging, where speckle can affect the image quality and make it difficult to interpret. Therefore, speckle is the most appropriate choice among the given options.

Rate this question:
30.

If the spatial pulse length is 10 mm, what is the axial resolution?
- 0.5 cm
- 5 cm
- 10 mm
- 1 cm
Correct Answer

A. 0.5 cm

Explanation

The axial resolution is determined by the spatial pulse length, which is the distance between the start and end of a pulse. In this case, the spatial pulse length is given as 10 mm. The axial resolution is typically half of the spatial pulse length, so the axial resolution would be 0.5 cm.

Rate this question:
31.

Which of the following has the greatest output intensity
- B-Mode
- Gray scale imaging
- CW Doppler
- Pulsed Doppler
Correct Answer

A. Pulsed Doppler

Explanation

Pulsed Doppler has the greatest output intensity among the given options. Pulsed Doppler is a technique used in ultrasound imaging to measure blood flow velocity. It uses short bursts of ultrasound waves and measures the intensity of the reflected waves to determine the velocity of blood flow. The intensity of the reflected waves is higher in pulsed Doppler compared to other options such as B-Mode or gray scale imaging, which are used for visualizing anatomical structures, or CW Doppler, which uses a continuous wave of ultrasound.

Rate this question:
32.

Which of the following best decribes the empirical approach to the study of bioeffects?
- Exposure-response
- Cause-effect
- Risk-benefit
- Causation-reaction
- Effect-microstreaming
Correct Answer

A. Exposure-response

Explanation

The empirical approach to the study of bioeffects involves examining the relationship between exposure to a certain factor and the resulting response or effect. It focuses on gathering and analyzing data to determine the extent and nature of the relationship between exposure and response. This approach aims to provide evidence-based information on the effects of various factors on biological systems.

Rate this question:
33.

At what location in a sound beam is the SPTA intensity the highest?
- Focal point
- Focal zone
- Fresnel zone
- Fraunhofer zone
- Half value depth
Correct Answer

A. Focal point

Explanation

The SPTA intensity is highest at the focal point of a sound beam. This is because the focal point is the area where the sound waves converge and become the most concentrated. At this point, the energy of the sound waves is focused, resulting in a higher intensity compared to other locations in the beam.

Rate this question:

2
34.

Which of the following sound waves is ultrasonic and least useful in diagnostic imaging?
- 30 KHZ
- 8 MHz
- 8,000 Hz
- 3,000 kHz
- 15 Hz
Correct Answer

A. 30 KHZ

Explanation

The correct answer is 30 KHZ. Ultrasonic sound waves have a frequency above the range of human hearing, typically above 20 kHz. Diagnostic imaging techniques such as ultrasound use high-frequency sound waves to create images of internal body structures. Since 30 KHZ is the lowest frequency among the given options, it is the least useful in diagnostic imaging as it falls below the typical range of ultrasonic frequencies used in this field.

Rate this question:
35.

If we increase the frequency the near zone length is
- Increased
- Decreased
- Unchanges
Correct Answer

A. Increased

Explanation

When the frequency is increased, the near zone length also increases. The near zone is the region close to the source where the electromagnetic fields are dominant. As the frequency increases, the wavelength decreases. This means that the waves become more compact and concentrated, causing the near zone to expand. Therefore, increasing the frequency leads to an increase in the near zone length.

Rate this question:
36.

Terra / BTX when operated properly does not produce measurable radiation on any external surface of the instrument.
- True
- False
Correct Answer

A. True

Explanation

The statement suggests that when Terra / BTX is operated correctly, it does not emit any detectable radiation on any external surface of the instrument. This implies that the instrument is designed and functioning properly, ensuring that radiation is contained within the instrument and does not pose any risk to the external environment or individuals. Therefore, the correct answer is true.

Rate this question:
37.

Terra / BTX have been designed such that proper operation will not result in any radiation exposure.
- True
- False
Correct Answer

A. True

Explanation

Terra/BTX has been specifically designed to ensure that it operates without causing any radiation exposure. This means that when used correctly, there will be no harmful radiation emitted from Terra/BTX. Therefore, the statement is true.

Rate this question:
38.

The damaging effects of radiation depend not only on its intensity and duration, but also the type of radiation. For instance, 1 millicurie of tritium a centimeter from the body poses a much different hazard than 1 millicurie of phosphorus-32 a centimeter from the body. Consequently, it is often preferable to measure radiation by describing the effect of that radiation on the materials through which it passes. The units for biological effects of radiation are:
- Exposure
- Absorbed Dose
- Dose Equivalent
- REM/Sievert
Correct Answer

A. REM/Sievert

Explanation

The units for biological effects of radiation are REM/Sievert because they take into account not only the intensity and duration of the radiation, but also the type of radiation and its effect on the materials it passes through. REM (Roentgen Equivalent Man) is a unit that measures the biological effect of radiation on human tissue, while Sievert is the International System of Units (SI) equivalent of REM. These units provide a more comprehensive measurement of the potential harm caused by radiation exposure.

Rate this question:

1
39.

If the transducer diameter increases, the lateral resolution at its smalles dimension is
- Increased
- Decreased
- Unchanged
Correct Answer

A. Increased

Explanation

When the transducer diameter increases, the lateral resolution at its smallest dimension is increased. This is because a larger transducer diameter allows for a wider beam width, resulting in a smaller focal spot. A smaller focal spot leads to improved lateral resolution, as it allows for better differentiation between adjacent structures or objects. Therefore, increasing the transducer diameter enhances the ability of the transducer to accurately distinguish between objects in the lateral direction, improving the lateral resolution.

Rate this question:
40.

The range equation relates distant from the reflector to __________ and __________.
- Time-of-flight, distance
- Frequency, wavelength
- Time of flight, propagation speed
- Propagation speed, density
Correct Answer

A. Time of flight, propagation speed

Explanation

The range equation relates the distance from the reflector to the time of flight and the propagation speed. The time of flight refers to the time it takes for the signal to travel from the source to the reflector and back, while the propagation speed is the speed at which the signal travels through the medium. By knowing these two factors, the range equation can be used to calculate the distance between the source and the reflector.

Rate this question:
41.

Multiple reflections that are equally spaced are called:
- Refractions
- Reverberations
- Shadows
- Comets
Correct Answer

A. Reverberations

Explanation

Reverberations are multiple reflections that are equally spaced. When sound waves bounce off surfaces and reflect back, they can create a series of echoes that are evenly distributed in time. This phenomenon is known as reverberation. It is commonly experienced in large enclosed spaces, such as concert halls or cathedrals, where sound waves bounce off walls, ceilings, and floors multiple times before dying out.

Rate this question:
42.

Refraction only occurs if there is :
- Normal incidence and differenct impedances
- Indirect intensity and differenct propagation speeds
- Oblique incidence and different propagation speeds
- Oblique frequency and identical impedances
Correct Answer

A. Oblique incidence and different propagation speeds

Explanation

Refraction occurs when light passes from one medium to another with different propagation speeds, and when the incident angle is oblique. In this case, the correct answer states that oblique incidence and different propagation speeds are necessary for refraction to occur. This means that the light must approach the boundary between the two media at an angle other than 90 degrees, and the media must have different speeds at which light can travel through them.

Rate this question:

1
43.

The relaive output of an US instrument is calibrated in dB and the operator increases the output by 60 dB. The beam intensity is increased by which of the following?
- 5%
- Two times
- Twenty times
- One hundred times
- One million times
Correct Answer

A. One million times

Explanation

3dB means 2 x bigger 6dB is 3dB + 3dB, therefore 6dB means 2 x 2 or 4 times bigger. 60dB = 10x10x10x10x10x10 or 1,000,000

Rate this question:
44.

If the transducer diameter increases, the lateral resolution at its smallest dimension is
- Increased
- Decreased
- Unchanged
Correct Answer

A. Increased

Explanation

When the transducer diameter increases, the lateral resolution at its smallest dimension is increased. This is because a larger transducer diameter allows for a wider beam width, which results in a larger focal zone. As a result, the ultrasound waves diverge less and can provide better lateral resolution, allowing for more detailed imaging and distinguishing smaller structures.

Rate this question:
45.

If the frequency is decreased, the numberical value of the radial resolution is
- Increased
- Decreased
- Unchanges
Correct Answer

A. Increased

Explanation

When the frequency is decreased, the numerical value of the radial resolution is increased. Radial resolution refers to the ability to distinguish between two closely spaced objects in an imaging system. A higher numerical value indicates a greater ability to distinguish between these objects, meaning that the system can resolve finer details. By decreasing the frequency, the wavelength of the waves used in the imaging system becomes longer. This longer wavelength allows for greater precision in distinguishing between closely spaced objects, resulting in an increased numerical value for the radial resolution.

Rate this question:
46.

Changing which of the following would not cause any change in a hard copy image output?
- TGC
- Overall gain
- Output power
- Display brightness & contrast
- Depth of view
Correct Answer

A. Display brightness & contrast

Explanation

Changing the display brightness and contrast would not cause any change in a hard copy image output because these settings only affect the appearance of the image on the screen. They do not alter the actual content or quality of the image that is printed on paper. The TGC (Time Gain Compensation), overall gain, output power, and depth of view are all factors that can affect the quality and clarity of the image, so changing any of these settings could potentially impact the hard copy image output.

Rate this question:
47.

The angle between an US pulse and the boundary between two media is 90 degrees. What is this called?
- Direct incidence
- Oblique incidence
- Indirect incidence
- Orthogonal incidence
Correct Answer

A. Orthogonal incidence

Explanation

Orthogonal incidence refers to the angle of 90 degrees between an ultrasonic (US) pulse and the boundary between two media. This means that the pulse is hitting the boundary perpendicularly, resulting in an orthogonal incidence.

Rate this question:
48.

The most likely amount of reflection at a boundary between soft tissue is:
- 1 %
- 22 %
- 33%
- 99%
Correct Answer

A. 1 %

Explanation

Soft tissue has a low acoustic impedance, which means that there is a small difference in the acoustic properties between soft tissue and surrounding media. This results in minimal reflection at the boundary between soft tissue, leading to only a small amount of the ultrasound wave being reflected back. Therefore, the most likely amount of reflection at a boundary between soft tissue is 1%.

Rate this question:
49.

In an analog scan converter, what component stores the image data?
- Computer memory
- Video tape recorder
- Dielectric matrix
- None of the above
Correct Answer

A. Dielectric matrix

Explanation

In an analog scan converter, the dielectric matrix is responsible for storing the image data. A dielectric matrix refers to a material with insulating properties that can store and retain charge. In the context of an analog scan converter, the dielectric matrix is used to store the electrical charges that represent the image data, allowing it to be displayed on a screen or monitor. Computer memory and video tape recorders are not typically used to store image data in an analog scan converter. Therefore, the correct answer is the dielectric matrix.

Rate this question:

Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Jul 21, 2016

Quiz Created by
Wantunine

Recent Quizzes

HAAD: Hazardous Waste Materials and Hazardous Waste Management Policy and Procedure HAAD: Hazardous Waste Materials and Hazardous Waste Management Policy and Procedure

PT/OT HAAD SIMULATION 7 PT/OT HAAD SIMULATION 7

OT/PT HAAD Simulation 6 OT/PT HAAD Simulation 6

MT Simulation Examination 2 MT Simulation Examination 2

MT Simulation Examination 5 MT Simulation Examination 5

MT Simulation Examination 4 MT Simulation Examination 4

Rt Simulation Examination 1

The amount of radiation exposure allowable is defined by the international commission on radiological protection (ICRP).

Quiz Preview

The gray scale can be changed by the sonographer

What are the four types of Radiation?

What piece of equipment is used to measure the radioactive decay count?

Should an interlock circuit activate, an amber light will display on the main instrument panel.

Put in decreasing order

What radiation is used to kill cancer cells.

The more pixels per inch:

Fill in of an anechoic structure such as a cyst is known as all of the following EXCEPT?

The more pixels per inch:

Which of the following is the best lateral resolution?

Radiation which has sufficient energy to remove electrons from atoms in materials through which the radiation passes is called ionizing radiation. Examples of ionizing radiation include all but:

Terra / BTX feature multiple interlock circuits, which prevent the possible operation of the X-ray generating source when these interlocks are activated.

Terra / BTX has the ability to perform the following experiments except:

If we increase the frequency the near zone length is

Terra / BTX uses X-rays to produce the desired X-ray diffraction pattern or X-ray fluorescence spectrum. These X-rays are produced from:

Put these intensities in decreasing order

What component of the US unit contains the memory bank?

Which of the following choces determines the signal amplitude in the transducers of an ultrasound system?

What determines the frequency of a sound beam from a pulsed transducer?

If the spatial pulse length is 10mm, what is the axial resolution?

Which of the following is the best lateral resolution?

What Radiation is used in smoke detectors?

What are the units of longitudinal resolution?

Sound is traveling from medium 1 to medium 2. Propagation speeds of M1 and M2 are 1600m/s and 1500m/s respectively. There is oblique incidence.

The time from the beginning of a pulse until its end is__________?

What is the meaning of thermal index = 37

Enhancement, multipath and side lobes result in:

What artifact has a grainy appearance and is caused by the interference effects of scattered sound?

If the spatial pulse length is 10 mm, what is the axial resolution?

Which of the following has the greatest output intensity

Which of the following best decribes the empirical approach to the study of bioeffects?

At what location in a sound beam is the SPTA intensity the highest?

Which of the following sound waves is ultrasonic and least useful in diagnostic imaging?

If we increase the frequency the near zone length is

Terra / BTX when operated properly does not produce measurable radiation on any external surface of the instrument.

Terra / BTX have been designed such that proper operation will not result in any radiation exposure.

If the transducer diameter increases, the lateral resolution at its smalles dimension is

The range equation relates distant from the reflector to __________ and __________.

Multiple reflections that are equally spaced are called:

Refraction only occurs if there is :

The relaive output of an US instrument is calibrated in dB and the operator increases the output by 60 dB. The beam intensity is increased by which of the following?

If the transducer diameter increases, the lateral resolution at its smallest dimension is

If the frequency is decreased, the numberical value of the radial resolution is

Changing which of the following would not cause any change in a hard copy image output?

The angle between an US pulse and the boundary between two media is 90 degrees. What is this called?

The most likely amount of reflection at a boundary between soft tissue is:

In an analog scan converter, what component stores the image data?

The range equation relates distant from the reflector to and .