CT Registry Practice Test / Revised Questions and
Answers / Guaranteed Pass
__________ is a medication commonly adminustered to sedate small children undergoing CT exams. -
Chloral hydrate
____________ decreases the noise of a CT image. - Decrease in matrix size
_____________ refers to an excessive amount of nitrogenous materials in the blood and is a symptom of
renal failure. - Azotemia
A _________ infection is one that patients acquire during their stay in a health care institution. -
Nosocomial
A __________ contrast material may be described as one that does not dissociate into charged particles
in solution. - non-ionic
A __________ is a benign, highly vascular mass commonly found in the liver. - Hemangioma
A common formula used to calculate the dosage of IV iodinated contrast media in a pediatric patient is
___________. - 1 mL/lb body weight
A common, nonmalignant enlargement of the prostate gland is typically referred to as
__________________. - Prostatic hypertrophy
A complete study of the orbits should include ______________ sections. - 3 x 3 mm axial and
coronal
A condition in which cerebral ischemia is caused by systemic hypotension is called __________. -
Vasovagal reaction
,A CT image is formed in part by projecting back all of the attenuation values recorded during data
acquisition onto a _________. - Matrix
A first generation CT scanner consists of an xray tube and two detectors that translate across the
patient's head while rotating 1° increments for a total of ______. - 180°
A glioma is a general term used to describe a group of primary tumors. Consisting of malignant glial cells,
gliomas occur in the _________. - Brain
A high osnokar contrast material has an average osmolality of _____________. - 1000 to 2400
mOsm/kg water
A patient has a severe vagal reaction to iodinated contrast material that includes bradycardia. Initial
treatment may include _____________. - Atropine
A patient in shock may exhibit which of the following symptoms: - tachycardia, rapid and shallow
breathing, and cyanosis
A patient is required to have the following exams: CT of the abdomen, GI series, and barium enema. The
correct order for the scheduling of these procedures is ____________________. - CT of the
abdomen, barium enema, GI series
Abnormalities of the middle and inner ear may be best demonstrated using CT scans of _______. -
1 to 2 mm
Accurate demonstration of __________ woupd most likely require thw IV injection of an iodinated
contrast during a CT study of the chest. - Mediastinal lymphadenopathy
Advantages of automatic power injectora over the manual bolus method of contrast administration
include ________. - Increased tissue enhancemrnt sue to faster injection times and uniform
contrast administration over the entire lenth of the study.
, Adverse reactions to contrast media include all of the following except:
A. dyspnea
B. hypotension
C. a feeling of warmth
D. urticaria - C. a feeling of warmth
After the intrathecal injection of contrast for a myelgraphic CT study of the lumbar spine, the patient
ahould be instructed to ___________________. - Rest for 8 to 24 hours with the head slightly
elevated
After the intravenous administration of iodinated contrast media, a hepatic hemangioma may become
_____________ and no longer appear on the CT image. - Isodense
An average CT number value for blood is ___________. - +45 Hounsfield units
An enema is indicated before a CT exam of tje pelvis to administer positive contrast material into the
large bowel. What dose range is sufficient to opacify the rectosigmoid region? - 150 to 250 mL
An intrathecal injection before a CT exam of the lumbar spine places iodinated contrast directly into the
_________. - Subarachnoid space
Areas of a CT inage that contain abrupt changes in tissue density are electronically represented by
_____________. - High spatial frequencies
Axial CT sections of the lumbar spine for intervertebral disk evaluation should be acquired with the lane
of imaging ____________. - Parallel to the plane of the intervetebral disk spaces
Collimation in CT scanning does not serve which of the following functions?
A. reducing scatter radiation to the patient
B. ensuring a consistent beam width received by the detectora
C. reducing the number of slices needed for a full set of images
Answers / Guaranteed Pass
__________ is a medication commonly adminustered to sedate small children undergoing CT exams. -
Chloral hydrate
____________ decreases the noise of a CT image. - Decrease in matrix size
_____________ refers to an excessive amount of nitrogenous materials in the blood and is a symptom of
renal failure. - Azotemia
A _________ infection is one that patients acquire during their stay in a health care institution. -
Nosocomial
A __________ contrast material may be described as one that does not dissociate into charged particles
in solution. - non-ionic
A __________ is a benign, highly vascular mass commonly found in the liver. - Hemangioma
A common formula used to calculate the dosage of IV iodinated contrast media in a pediatric patient is
___________. - 1 mL/lb body weight
A common, nonmalignant enlargement of the prostate gland is typically referred to as
__________________. - Prostatic hypertrophy
A complete study of the orbits should include ______________ sections. - 3 x 3 mm axial and
coronal
A condition in which cerebral ischemia is caused by systemic hypotension is called __________. -
Vasovagal reaction
,A CT image is formed in part by projecting back all of the attenuation values recorded during data
acquisition onto a _________. - Matrix
A first generation CT scanner consists of an xray tube and two detectors that translate across the
patient's head while rotating 1° increments for a total of ______. - 180°
A glioma is a general term used to describe a group of primary tumors. Consisting of malignant glial cells,
gliomas occur in the _________. - Brain
A high osnokar contrast material has an average osmolality of _____________. - 1000 to 2400
mOsm/kg water
A patient has a severe vagal reaction to iodinated contrast material that includes bradycardia. Initial
treatment may include _____________. - Atropine
A patient in shock may exhibit which of the following symptoms: - tachycardia, rapid and shallow
breathing, and cyanosis
A patient is required to have the following exams: CT of the abdomen, GI series, and barium enema. The
correct order for the scheduling of these procedures is ____________________. - CT of the
abdomen, barium enema, GI series
Abnormalities of the middle and inner ear may be best demonstrated using CT scans of _______. -
1 to 2 mm
Accurate demonstration of __________ woupd most likely require thw IV injection of an iodinated
contrast during a CT study of the chest. - Mediastinal lymphadenopathy
Advantages of automatic power injectora over the manual bolus method of contrast administration
include ________. - Increased tissue enhancemrnt sue to faster injection times and uniform
contrast administration over the entire lenth of the study.
, Adverse reactions to contrast media include all of the following except:
A. dyspnea
B. hypotension
C. a feeling of warmth
D. urticaria - C. a feeling of warmth
After the intrathecal injection of contrast for a myelgraphic CT study of the lumbar spine, the patient
ahould be instructed to ___________________. - Rest for 8 to 24 hours with the head slightly
elevated
After the intravenous administration of iodinated contrast media, a hepatic hemangioma may become
_____________ and no longer appear on the CT image. - Isodense
An average CT number value for blood is ___________. - +45 Hounsfield units
An enema is indicated before a CT exam of tje pelvis to administer positive contrast material into the
large bowel. What dose range is sufficient to opacify the rectosigmoid region? - 150 to 250 mL
An intrathecal injection before a CT exam of the lumbar spine places iodinated contrast directly into the
_________. - Subarachnoid space
Areas of a CT inage that contain abrupt changes in tissue density are electronically represented by
_____________. - High spatial frequencies
Axial CT sections of the lumbar spine for intervertebral disk evaluation should be acquired with the lane
of imaging ____________. - Parallel to the plane of the intervetebral disk spaces
Collimation in CT scanning does not serve which of the following functions?
A. reducing scatter radiation to the patient
B. ensuring a consistent beam width received by the detectora
C. reducing the number of slices needed for a full set of images
