RAD 100 - CT Homework Exam Questions with Correct Answers Graded A+
The process related to the first computed tomography scanner was called ________ - Answers
computerized transverse axial scanning
tomography is a method of imaging various planes in the body. motion is used to _________
certain portions of the patient's anatomy in order to see a particular ________ better - Answers
blur, location
modern CT scanners can only image the body in the axial plane - Answers false
modern CT scanners can measure the amount of calcium in the coronary arteries - Answers
true
which of the following sources of radiation were used in Hounsfield's first primitive CT scanner?
- Answers Americium
first generation scanners were only capable of imaging the: - Answers head/brain
what Houndfield Unit is assigned to water? - Answers 0
modern CT scanners use a/an _________ to produce the radiation needed to image the patient -
Answers x ray tube
modern CT scanners allow the entire data acquisition and reconstruction process to be
completed in typically less than ________ seconds - Answers 20
unlike conventional CT scanning, in Volume Scanning the x ray tube traces a/an _______ path
with a radius equal to the distance from the focal spot to the center of rotation - Answers
spiral/helical
with spiral or helical scanning, an entire ________ of data is acquired without the x ray tube
stopping for the patient to ________ to the next position - Answers volume, move
image creation in CT is very dependent on _________ of the x ray beam in tissue measured as
that beam rotates - Answers attenuation
despite the fact that slice-by-slice CT scanning is theoretically more accurate, it has the
following limitations (select all that apply): - Answers longer exam times because of interscan
delay, omitted anatomy due to inconsistent patient respiration to as slice-to-slice
misregistration, inaccurate generation of 3D or reformatted imaged producing stair-step
artifacts, few slices with maximum contrast enhancement
_________ is a digital image processing technique used in CT to modify imaged through a filter
function - Answers convolution
imaged created by a CT scanner are in an analog format - Answers false
The process related to the first computed tomography scanner was called ________ - Answers
computerized transverse axial scanning
tomography is a method of imaging various planes in the body. motion is used to _________
certain portions of the patient's anatomy in order to see a particular ________ better - Answers
blur, location
modern CT scanners can only image the body in the axial plane - Answers false
modern CT scanners can measure the amount of calcium in the coronary arteries - Answers
true
which of the following sources of radiation were used in Hounsfield's first primitive CT scanner?
- Answers Americium
first generation scanners were only capable of imaging the: - Answers head/brain
what Houndfield Unit is assigned to water? - Answers 0
modern CT scanners use a/an _________ to produce the radiation needed to image the patient -
Answers x ray tube
modern CT scanners allow the entire data acquisition and reconstruction process to be
completed in typically less than ________ seconds - Answers 20
unlike conventional CT scanning, in Volume Scanning the x ray tube traces a/an _______ path
with a radius equal to the distance from the focal spot to the center of rotation - Answers
spiral/helical
with spiral or helical scanning, an entire ________ of data is acquired without the x ray tube
stopping for the patient to ________ to the next position - Answers volume, move
image creation in CT is very dependent on _________ of the x ray beam in tissue measured as
that beam rotates - Answers attenuation
despite the fact that slice-by-slice CT scanning is theoretically more accurate, it has the
following limitations (select all that apply): - Answers longer exam times because of interscan
delay, omitted anatomy due to inconsistent patient respiration to as slice-to-slice
misregistration, inaccurate generation of 3D or reformatted imaged producing stair-step
artifacts, few slices with maximum contrast enhancement
_________ is a digital image processing technique used in CT to modify imaged through a filter
function - Answers convolution
imaged created by a CT scanner are in an analog format - Answers false
