Ct Exam Registry Prep

136 Questions  I  By Tkraiger
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Computed Tomography Quizzes & Trivia
Practice test questions that will get you ready for the CT registry

  
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1.  The tarsal bones of the foot include all of the following except the:
A.
B.
C.
D.
2.  An appropriate length of scan delay in seconds following contrast injection for orbital scan is:
A.
B.
C.
D.
3.  The ______lobe of the brain is responsible for visual perception.
A.
B.
C.
D.
4.  The most common reason to perform CT scanning of the lumbar spine is to:
A.
B.
C.
D.
5.  The ideal kVp/mAs settings for a posterior fossa scan are:
A.
B.
C.
6.  A CT scan of the cervical spine should extend from the:
A.
B.
C.
D.
7.  The gantry of a CT scanner is NOT likely to contain:
A.
B.
C.
D.
8.  Second-generation scanners were associated with the introduction of which of the following developments?
A.
B.
C.
D.
9.  The term "noise" in CT imaging refers to:
A.
B.
C.
D.
10.  The late effects of radiation exposure include all of the following EXCEPT development of:
A.
B.
C.
D.
11.  Which of the following statements about slip ring technology is NOT true?
A.
B.
C.
D.
12.  The apices of the lungs are located at the level of the _____vertebra.
A.
B.
C.
D.
13.  The first cervical vertebra (C1) is also known as the:
A.
B.
C.
D.
14.  A needle with plastic projections on either side that aid in holding the needle during venipuncture best describes a (an):
A.
B.
C.
D.
15.  Uniform marking of the small intestine with oral contrast agents can be achieved by:
A.
B.
C.
D.
16.  The larynx is best visualized with axial slices that are:
A.
B.
C.
D.
17.  In order to lower the viscosity of the contrast agent before injection, it should be heated to:
A.
B.
C.
D.
18.  The gantry angle for a sinus cavity CT scan should be:
A.
B.
C.
D.
19.  For pituitary scans, intravenous contrast should be injected at a rate of ___cc/sec
A.
B.
C.
D.
20.  Proper patient positioning for CT of the knee is feet first and supine, with the feet:
A.
B.
C.
D.
21.  A technologist may administer contrast agents, radiopharmaceuticals, or medications:
A.
B.
C.
D.
22.  In addition to having the patient raise the arms above the head, technologists can minimize scan artifacts in musculoskeletal CT imaging by:
A.
B.
C.
D.
23.  A "top-off" dose refers to:
A.
B.
C.
D.
24.  CT scanning exposes the patient to less radiation than a plain x-ray film because:
A.
B.
C.
D.
25.  What are the most appropriate filming parameters/formats for the subdural area of the brain?
A.
B.
C.
D.
26.  Bremsstrahlung is:
A.
B.
C.
D.
27.  The correct Hounsfield unit measurement for acute intracranial hemmorhage is:
A.
B.
C.
D.
28.  In a routine neck scan, a lateral localizer light should be situated:
A.
B.
C.
D.
29.  What are the proper kVp/mAs settings for a scan of the soft tissues of the neck?
A.
B.
C.
D.
30.  The dorsal tendon group is responsible for:
A.
B.
C.
D.
31.  Methods for reducing streak artifacts in patients undergoing routine chest CT include all of the following EXCEPT:
A.
B.
C.
D.
32.  Spiral/helical CT:
A.
B.
C.
D.
33.  The area where the trachea bifurcates is called the:
A.
B.
C.
D.
34.  Uniphasic, biphasic, and exponential decay all describe types of:
A.
B.
C.
D.
35.  The appropriate DFOV in CT scans of the elbow is approximately _____cm.
A.
B.
C.
D.
36.  Which ONE of the following is an advantage of an angiocatheter over a butterfly needle?
A.
B.
C.
D.
37.  The line that extends from the fold at the corner of the eye to the external hole of the ear is known as the ______line
A.
B.
C.
D.
38.  The function of the detector is to:
A.
B.
C.
D.
39.  The roughened surface on the anterior surface of the tibia that provides an insertion point for the knee cap ligaments is the:
A.
B.
C.
D.
40.  Which of the following is NOT one of the structures of the temporal bone?
A.
B.
C.
D.
41.  Which of the following statements is FALSE regarding the temporomandibular joint?
A.
B.
C.
D.
42.  Which of the following statements regarding CTA of the abdomen is FALSE?
A.
B.
C.
D.
43.  The measure of the total number of particles in contrast solution per kilogram of water describes:
A.
B.
C.
D.
44.  The bone that transmittes the weight of the body from the distal portions of the tibia and fibula to the foot is called the:
A.
B.
C.
D.
45.  The field of view for a craniofacial scan should include the:
A.
B.
C.
D.
46.  The technique of ______is best described as capturing cardica CT images using estimates of the patient's RR interval based on initial electrocardiographic recordings of these intervals:
A.
B.
C.
D.
47.  The portion of the dura mater that separates the cerebellum from the cerebrum is known as the :
A.
B.
C.
D.
48.  It is inappropriate for a technologist to ask a patient about which ONE of the following:
A.
B.
C.
D.
49.  Which of the following statements is true about tube current?
A.
B.
C.
D.
50.  Barium should not be used in patients with:
A.
B.
C.
D.
51.  The posterior margin of the posterior neck muscle triangle is formed by the_______ muscle.
A.
B.
C.
D.
52.  IV contrast is used in CT scans of the hip and pelvis to:
A.
B.
C.
D.
53.  The onset of most serious adverse reactions to contrast media occurs ______ post administration
A.
B.
C.
D.
54.  CT angiography of the brain is indicated in all of the following cases except:
A.
B.
C.
D.
55.  The maximum degree of percentage of overlap that most CT scanners will recognize
A.
B.
C.
D.
56.  Intravenous contrast is recommended for CT scans of the brain in all cases EXCEPT:
A.
B.
C.
D.
57.  The image grid on a computer screen is made up of tiny regions called:
A.
B.
C.
D.
58.  The sciatic nerve carries nerve fibers from the vertebral interspaces most prominently at:
A.
B.
C.
D.
59.  The internal ear contains all of the following structures EXCEPT the:
A.
B.
C.
D.
60.  The spinal cord originates at the foramen magnum in the skull base and extends approximately to the level of:
A.
B.
C.
D.
61.  MRI may be of greater value than CT for musculoskeletal imaging of ___.
A.
B.
C.
D.
62.  The CT urogram is a comprehensive protocol designed to detect or rule out all of the following EXCEPT:
A.
B.
C.
D.
63.  Which of the following terms is used to describe the effectiveness with which the detectors gather the photons transmitted from the patient?
A.
B.
C.
D.
64.  Contrast agents provide superior visibility in an anatomic area due to their ability to absorb:
A.
B.
C.
D.
65.  Signs of anaphylactoid reaction to contrast include all of the following EXCEPT:
A.
B.
C.
D.
66.  Collimation in CT scanning does NOT serve which of the following functions?
A.
B.
C.
D.
67.  Which one of the following is NOT a structure of the eyeglobe?
A.
B.
C.
D.
68.  What is an appropriate length of scan delay in seconds following contrast injection for CT angiography of the brain?
A.
B.
C.
D.
69.  The viscosity of a contrast agent refers to:
A.
B.
C.
D.
70.  Gastric tumors most commonly appear on CT as:
A.
B.
C.
D.
71.  Which superficial anterior muscle of the neck is known as the "muscle of facial expression"?
A.
B.
C.
D.
72.  The best quality CT images of the sternum are reformatted in the __________planes.
A.
B.
C.
D.
73.  The recommended maximum slice thickness for display of CT scans of the abdomen and pelvis is _____mm.
A.
B.
C.
D.
74.  Which one of the following scapular projections is best described as a flat process that forms the highest point of the scapula?
A.
B.
C.
D.
75.  The extraocular muscles of the orbital muscle cone include all of the following EXCEPT the:
A.
B.
C.
D.
76.  Minimum CT scan times have been reduced from 5 minutes per slice in 1976 to _____seconds per slice in 2004.
A.
B.
C.
D.
77.  To obtain 3D images of the spine, scanning should be conducted using a minimum slice thickness of ___mm and an overlap of ____%.
A.
B.
C.
D.
78.  Which of the following statements is FALSE regarding the maxillary sinuses?
A.
B.
C.
D.
79.  Which one of the following is TRUE regarding ionic contrast media?
A.
B.
C.
D.
80.  The ________ is/are the smallest of the cranial bones.
A.
B.
C.
D.
81.  KV refers to:
A.
B.
C.
D.
82.  The posterior elements of the vertebra are the:
A.
B.
C.
D.
83.  In CT scanning of the wrist, the technologist should employ all of the following techniques EXCEPT:
A.
B.
C.
D.
84.  Common causes of RLQ pain that may mimic appendicitis, but can be ruled out with CT scanning, include all of the following EXCEPT:
A.
B.
C.
D.
85.  X-rays are produced whenever fast moving electrons collide with any form of matter because:
A.
B.
C.
D.
86.  Slip ring technology made spiral CT a possibility by:
A.
B.
C.
D.
87.  Attachment of the vertebral column to the pelvis is provided by the:
A.
B.
C.
D.
88.  The most appropriate landmark to use for orbital scans is the:
A.
B.
C.
D.
89.  Exposure to radiation may affect cells in all of the following ways EXCEPT:
A.
B.
C.
D.
90.  Which of the following artifacts is also referred to as the cupping artifact?
A.
B.
C.
D.
91.  Factors to consider in choosing a non-ionic, lower-osmolality agent over an ionic, higher-osmolality agent include all of the following except a history of:
A.
B.
C.
D.
92.  What is the proper patient positioning for axial CT scans of the orbits?
A.
B.
C.
D.
93.  A proper IV contrast bolus for a soft-tissue scan of the neck is ___cc at ____cc/sec
A.
B.
C.
D.
94.  CT plays a limited role in evaluation of the distal esophagus because:
A.
B.
C.
D.
95.  The major change in CT technology seen with fourth-generation scanners was:
A.
B.
C.
D.
96.  Which one fo the following cartilages forms the lowest portion of the larynx?
A.
B.
C.
D.
97.  If extravasation of contrast occurs, the technologist should do all of the following EXCEPT:
A.
B.
C.
D.
98.  THe main supply of blood to the spinal cord is delivered by the:
A.
B.
C.
D.
99.  Which one of the following is NOT a lobe of the cerebrum?
A.
B.
C.
D.
100.  The field of view for pituitary gland scans should be ____cm.
A.
B.
C.
D.
101.  In an electron beam CT (EBCT) scanner, the type of radiation used to produce the image is:
A.
B.
C.
D.
102.  CT scanning of the thoracic spine is indicated for all of the following EXCEPT to:
A.
B.
C.
D.
103.  The maximum diameter of the patient aperture in the gantry of a CT unit is approximately:
A.
B.
C.
D.
104.  Which of the following statements about solid state generators is NOT true?
A.
B.
C.
D.
105.  The gelatinous core at the center of an intervertebral disc is called the:
A.
B.
C.
D.
106.  The device in the gantry that measures the intensity of the x-ray beam emanating from the tube is called the:
A.
B.
C.
D.
107.  How man cc of contrast is appropriate to deliver for a routine brain scan?
A.
B.
C.
D.
108.  THe vertebral arteries directly supply blood to all the following structures except the:
A.
B.
C.
D.
109.  How many display fields of view are recommended to obtain a complete CT scan of the neck?
A.
B.
C.
D.
110.  What type of scout scans should be taken prior to performing craniofacial scans?
A.
B.
C.
D.
111.  Which one of the following is NOT a factor affecting choice of a particular contrast agent?
A.
B.
C.
D.
112.  When conducting CT scans of the ankle, the ankles
A.
B.
C.
D.
113.  Scan coverage for a temporal bone scan should cover the:
A.
B.
C.
D.
114.  THe paired bones of the craniofacial area include all of the following except the _______bones:
A.
B.
C.
D.
115.  CTA may require LOCM injection rats as high as ______mL/sec.
A.
B.
C.
D.
116.  In abdominal and pelvic CT imaging, IV contrast provides all of the following benefits EXCEPT:
A.
B.
C.
D.
117.  The muscles of mastication include all of the following EXCEPT the:
A.
B.
C.
D.
118.  Adverse reactions to contrast media include all of the following EXCEPT:
A.
B.
C.
D.
119.  For the evaluation of herniated dics, CT provides _____________over MRI.
A.
B.
C.
D.
120.  The accumulation of gas between the verterbral disks is known as:
A.
B.
C.
D.
121.  The field of view for an internal auditory canal scan should be:
A.
B.
C.
D.
122.  The primary reason for having the patient extend the arms above the head during a thoracic CT scan is that it
A.
B.
C.
D.
123.  The basilar artery divides to form the _______arteries
A.
B.
C.
D.
124.  The imaging procedure involving the injection of contrast agents into the spinal canal is:
A.
B.
C.
D.
125.  Which of the following structures is best used as a landmark in CT angiography of the brain?
A.
B.
C.
D.
126.  If iodinated contrast is used in scans of the humerus and forearm, the appropriate scan delay time is _______sec.
A.
B.
C.
D.
127.  Which of the following statements concerning CT angiography of the neck is FALSE?
A.
B.
C.
D.
128.  Which one of the following statements regarding the petrous pyramids is FALSE?
A.
B.
C.
D.
129.  What is the most common indication for CT of the hip?
A.
B.
C.
D.
130.  In a patient with an abdominal mass, CT scanning is used for all of the following EXCEPT?
A.
B.
C.
D.
131.  Which one of the following statements regarding CT scans for air trapping are TRUE?
A.
B.
C.
D.
132.  The Agaston score is a measurement of the:
A.
B.
C.
D.
133.  Partial thromboplastin time (PTT) measures the time required:
A.
B.
C.
D.
134.  Phonation technique is sometimes employed in what type of CT scan?
A.
B.
C.
D.
135.  The preferred type of external storage devices used on CT scanning computers is:
A.
B.
C.
D.
136.  CT scanning of the pituitary gland generally requires:
A.
B.
C.
D.
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