Telegram Radiology Club
- 1.
The source of the x-ray electrons in the x-ray tube is:
- A.
Target (tungsten)
- B.
Anode
- C.
Filament
- D.
Vacuum housing
Correct Answer
C. Filament -
- 2.
Which of the following factors does NOT affect the radiographic's image sharpness?
- A.
Exposure factors
- B.
Ambient lighting
- C.
Geometry
- D.
Patient motion
Correct Answer
B. Ambient lighting -
- 3.
The SI unit for absorbed dose is:
- A.
Gray
- B.
Rad
- C.
Sievert
- D.
Becquerel
Correct Answer
A. Gray -
- 4.
The lateral malleolus is part of:
- A.
Tibia
- B.
Talus
- C.
Fibula
- D.
Calcaneus
Correct Answer
C. Fibula -
- 5.
The appearance of water, urine, bile and fluid collection in ultrasound images is:
- A.
White
- B.
Grey
- C.
Echogenic
- D.
Anechoic
- E.
Bright
Correct Answer
D. Anechoic -
- 6.
The ideal gamma-ray energy for nuclear medicine imaging is between:
- A.
500 and 1000 MeV
- B.
10 and 50 MeV
- C.
100 and 200 MeV
- D.
10 and 50 keV
- E.
100 and 200 keV
Correct Answer
E. 100 and 200 keV -
- 7.
When a slice is selected in MRI imaging, what happens in the rest of the patient?
- A.
The larmor frequencies are not changed
- B.
Rotation of magnetization by RF excitation pulse
- C.
The larmor frequencies change
- D.
RF is turned off
- E.
Nothing changes
Correct Answer
C. The larmor frequencies change -
- 8.
The CT number for water, when expressed as a Hounsfield unit (HU), has a value of:
- A.
-1000
- B.
-500
- C.
0
- D.
500
- E.
1000
Correct Answer
C. 0 -
- 9.
The U/S mode which cannot produce an image on the monitor is:
- A.
A-mode
- B.
B-mode
- C.
C-mode
- D.
M-mode
- E.
Contrast-enhanced ultrasound
Correct Answer
A. A-mode -
- 10.
Arthrography is done by injecting contrast media into:
- A.
The bone
- B.
The joint space
- C.
The ligaments
- D.
The muscle
- E.
Musculotendinous junction
Correct Answer
B. The joint space -
- 11.
The area of high signal in MRI image appears as:
- A.
Black
- B.
White
- C.
Dark grey
- D.
Grey
- E.
Pink
Correct Answer
B. White -
- 12.
The major advantage of spiral CT is:
- A.
Large volume imaging
- B.
One second imaging time
- C.
Sub-second image time
- D.
Removal of ring artifacts
- E.
Imaging without x-ray
Correct Answer
A. Large volume imaging -
- 13.
When hydrogen nuclei are placed in a magnetic field they:
- A.
Interact with surrounding air
- B.
Align parallel and antiparallel with the field
- C.
Rotate counter clockwise
- D.
Align parallel with the field
- E.
Nothing happens to them
Correct Answer
B. Align parallel and antiparallel with the field -
- 14.
One of the following effects is not caused by ultrasound:
- A.
Heating
- B.
Cavitaions
- C.
Mechanical
- D.
Thermal
- E.
Ionisations
Correct Answer
E. Ionisations -
- 15.
The artificial contrast material used most frequently in studies of the vascular system is:
- A.
Iodine
- B.
Barium
- C.
Air
- D.
Carbon Dioxide
- E.
Sodium
Correct Answer
A. Iodine -
- 16.
All of these are types of RF coils used in magnetic resonance imaging except:
- A.
The volume coil
- B.
The surface coil
- C.
The phased coil
- D.
The solenoid coil
- E.
The curved coil
Correct Answer
E. The curved coil -
- 17.
On longitudinal ultrasound scan, the prostate appears …………. to urinary bladder:
- A.
Anterior
- B.
Above
- C.
Right
- D.
Left
- E.
Posterior
Correct Answer
E. Posterior -
- 18.
Which of the following modalities has the highest spatial resolution? (in standard imaging parameters)
- A.
MRI
- B.
Nuclear Medicine
- C.
Ultrasound
- D.
CT
Correct Answer
C. Ultrasound -
- 19.
In PET/CT, imaging using 18F-FDG, when should the scanning begin after the injection?
- A.
15-30 seconds
- B.
1-2 minutes
- C.
45-60 minutes
- D.
6 hours
- E.
72 hours
Correct Answer
C. 45-60 minutes -
- 20.
The examination that involves emission of a signal from a patient is:
- A.
CT
- B.
Ultrasound
- C.
MRI
- D.
Projection radiography
- E.
Spiral CT
Correct Answer
C. MRI -
- 21.
To reduce the scan time in MRI imaging we have to
- A.
Decrease TR
- B.
Increase TR
- C.
Use special RF coils
- D.
Decrease number of active RF coils
- E.
Put patients in prone position
Correct Answer
A. Decrease TR -
- 22.
To see normal gallbladder in U/S exam the patient must be:
- A.
8-10 hour fasting
- B.
Full bladder
- C.
After eating fatty meal
- D.
After drinking water
- E.
In erect position
Correct Answer
A. 8-10 hour fasting -
- 23.
The radiopharmaceutical agents or tracers given to the patient in nuclear medicine tests give energy as:
- A.
X-rays
- B.
Sound waves
- C.
Gamma rays
- D.
Beta particles
- E.
Alpha particles
Correct Answer
C. Gamma rays -
- 24.
During spiral CT, the motion of the patient couch is
- A.
Stationary
- B.
Rotating
- C.
Advanced step-wise
- D.
Alternating advance retreat
- E.
Continuously advanced
Correct Answer
E. Continuously advanced -
- 25.
By employing high kVp for CT imaging, one can reduce:
- A.
Compton scatter
- B.
Patient dose
- C.
Image artifacts
- D.
Image reconstruction time
- E.
Imaging time.
Correct Answer
B. Patient dose -
- 26.
……………..is a nuclear medicine technique that involves tracing slightly radioactive glucose as it is absorbed by cells:
- A.
Positron Emission Tomography
- B.
Computer tomography scan
- C.
SONAR
- D.
Magnetic resinance
- E.
Iodine131 SPECT
Correct Answer
A. Positron Emission Tomography -
- 27.
The machine which is used in most nuclear medicine scans is:
- A.
Conventional x-ray machine
- B.
MRI
- C.
Gamma camera
- D.
Ultrasound machine
- E.
Panoramic tomography (O.P.G)
Correct Answer
C. Gamma camera -
- 28.
………… is very useful for evaluating cerebral aneurysm and vascular occlusive disease:
- A.
Fluoroscopy using barium
- B.
Projection radiography
- C.
CTA
- D.
Intracranial ultrasound
- E.
SPECT
Correct Answer
C. CTA -
- 29.
The basic projections of the calcaneus are:
- A.
AP and lateral
- B.
PA and lateral
- C.
Anterior-oblique and lateral
- D.
Axial and lateral
- E.
Axial and oblique
Correct Answer
D. Axial and lateral -
- 30.
The traditional unit used to measure radiation exposure in the air is:
- A.
Rad
- B.
Roentgen
- C.
Milliampere
- D.
Gray
- E.
Sievert
Correct Answer
B. Roentgen -
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Current Version
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Mar 22, 2022Quiz Edited by
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Oct 05, 2017Quiz Created by
Radiologyclub
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