Computed Tomography Questions with
Accurate Answers
_______ is a functional nuclear medicine study utilizing fludeoxy glucose F18
(FDG) as a radiopharmaceutical. correct answer Positron emission tomography
(PET)
_______ is the ability of the CT system to detect an object with a small difference
in linear attenuation coefficient as compared with the surrounding tissue. correct
answer contrast resolution
_______ was developed by the alliance for Radiation Safety in Pediatric Imaging
and sponsored by the Society for Pediatric Radiation. correct answer Image
Gently campaign
________ is defined as reduction of intensity of a radiation beam as it passed
through a substance. correct answer attenuation
________ is the primary imaging modality for evaluation of the adrenal glands.
correct answer -Computed tomography
_________ acquired during a CT examination, is used as a localizer for the
prescription of the subsequent cross-sectional CT acquisition(s). correct answer
Scout image (the initial image)
_________ controls the quality of the x-ray beam and its overall penetrating
capability. correct answer Peak kilo voltage (kVp)
,_________ is an approximate measure of the dose received in a single CT section
or a slice. correct answer CT dose index (CTDI)
_________ is specialized CT examination of the bladder in which an iodinated
contrast media is directly administered under gravity into the bladder via foley
catheter. correct answer CT cystography
_________ occurs when a blood clot breaks free from elsewhere in the venous
system and migrates into a pulmonary arter. correct answer Pulmonary embolism
__________ improves the geometric efficiency of the x-ray beam, leading to a
greater spatial resolution. correct answer smaller focal spot
__________ medications may be prescribed to reduce patient anxiety during a CT
examination. correct answer Anxiolytic
___________ improves visualization of the spinal cord, nerve roots, and
surrounding soft tissue structures during a CT myelogram. correct answer
intrathecal administration of contrast
___________ refers to an insufficient oxygenation of tissue at the cellular level.
correct answer hypoxia
___________ refers to the level of blood flow throughout the brain tissue. correct
answer cerebral perfusion
____________ describes the amount of radiation absorbed in a quantity of air.
correct answer Air kerma
, ______________ is used to describe the process of grayscale mapping of the CT
image. correct answer windowing
A _____ can be used to drain fluid from the intrapleural space of the ill or injured
patient. correct answer Thoracostomy tube (chest tube)
A _______ is an electronic device used to measure pules and respiratory status.
correct answer pulse oximeter
A ________ of the testes is an abnormal accumulation of fluid around a testicle.
correct answer hydrocele
A _________ must sign the information consent form for a minor. correct answer
Parent or legal guardian
A protrusion of the gastroesophageal junction through the diaphragm into the
thorax is called _________. correct answer hiatal hernia
All modern MDCT systems use solid-state detectors, consisting primarily of
scintillating crystal material. correct answer True
An overbeam in computed tomography is known as ___________ process. correct
answer penumbra
As pitch increases, the speed at which the patient travels through the CT gantry
decrease. correct answer False
Accurate Answers
_______ is a functional nuclear medicine study utilizing fludeoxy glucose F18
(FDG) as a radiopharmaceutical. correct answer Positron emission tomography
(PET)
_______ is the ability of the CT system to detect an object with a small difference
in linear attenuation coefficient as compared with the surrounding tissue. correct
answer contrast resolution
_______ was developed by the alliance for Radiation Safety in Pediatric Imaging
and sponsored by the Society for Pediatric Radiation. correct answer Image
Gently campaign
________ is defined as reduction of intensity of a radiation beam as it passed
through a substance. correct answer attenuation
________ is the primary imaging modality for evaluation of the adrenal glands.
correct answer -Computed tomography
_________ acquired during a CT examination, is used as a localizer for the
prescription of the subsequent cross-sectional CT acquisition(s). correct answer
Scout image (the initial image)
_________ controls the quality of the x-ray beam and its overall penetrating
capability. correct answer Peak kilo voltage (kVp)
,_________ is an approximate measure of the dose received in a single CT section
or a slice. correct answer CT dose index (CTDI)
_________ is specialized CT examination of the bladder in which an iodinated
contrast media is directly administered under gravity into the bladder via foley
catheter. correct answer CT cystography
_________ occurs when a blood clot breaks free from elsewhere in the venous
system and migrates into a pulmonary arter. correct answer Pulmonary embolism
__________ improves the geometric efficiency of the x-ray beam, leading to a
greater spatial resolution. correct answer smaller focal spot
__________ medications may be prescribed to reduce patient anxiety during a CT
examination. correct answer Anxiolytic
___________ improves visualization of the spinal cord, nerve roots, and
surrounding soft tissue structures during a CT myelogram. correct answer
intrathecal administration of contrast
___________ refers to an insufficient oxygenation of tissue at the cellular level.
correct answer hypoxia
___________ refers to the level of blood flow throughout the brain tissue. correct
answer cerebral perfusion
____________ describes the amount of radiation absorbed in a quantity of air.
correct answer Air kerma
, ______________ is used to describe the process of grayscale mapping of the CT
image. correct answer windowing
A _____ can be used to drain fluid from the intrapleural space of the ill or injured
patient. correct answer Thoracostomy tube (chest tube)
A _______ is an electronic device used to measure pules and respiratory status.
correct answer pulse oximeter
A ________ of the testes is an abnormal accumulation of fluid around a testicle.
correct answer hydrocele
A _________ must sign the information consent form for a minor. correct answer
Parent or legal guardian
A protrusion of the gastroesophageal junction through the diaphragm into the
thorax is called _________. correct answer hiatal hernia
All modern MDCT systems use solid-state detectors, consisting primarily of
scintillating crystal material. correct answer True
An overbeam in computed tomography is known as ___________ process. correct
answer penumbra
As pitch increases, the speed at which the patient travels through the CT gantry
decrease. correct answer False
