Medical Imaging, Computed
Tomography
In Conventional Tomography, how do the source and detectors interact with each other? - correct
answer ✔✔The source and detector moves simultaneously.
What kind of images can CT produce? - correct answer ✔✔Coronal, Sagittal, and transverse.
What is one advantage of CT imaging? - correct answer ✔✔Eliminates the superimposition of structures
above and below.
Define Tomography - correct answer ✔✔Imaging of an anatomical cross-section
What are the basic principals of image formation for CT? - correct answer ✔✔Obtain an attenuation
profile of the cross section from multiple directions. To create 3D image back projection is used.
what is the purpose of a slit beam? - correct answer ✔✔It reduces scatter, and creates a better
resolution and ability to differentiate differences in attenuation characteristics. Such as soft tissue, bone,
fat, tumor, blood and cerebral fluid.
What does CAT stand for? - correct answer ✔✔Computerized Axial Tomography
Which generation of CT scanners is most often used? - correct answer ✔✔Generation 6 Helical or Spiral
scanners. Has couch motion and tube rotation simultaneously.
What are some improvements newer generations of CT scanners have? - correct answer ✔✔360 degrees
of detectors, multiple detector parallel layers, reduces time for scan, patient exposure is reduced,
increased image resolution.
Tomography
In Conventional Tomography, how do the source and detectors interact with each other? - correct
answer ✔✔The source and detector moves simultaneously.
What kind of images can CT produce? - correct answer ✔✔Coronal, Sagittal, and transverse.
What is one advantage of CT imaging? - correct answer ✔✔Eliminates the superimposition of structures
above and below.
Define Tomography - correct answer ✔✔Imaging of an anatomical cross-section
What are the basic principals of image formation for CT? - correct answer ✔✔Obtain an attenuation
profile of the cross section from multiple directions. To create 3D image back projection is used.
what is the purpose of a slit beam? - correct answer ✔✔It reduces scatter, and creates a better
resolution and ability to differentiate differences in attenuation characteristics. Such as soft tissue, bone,
fat, tumor, blood and cerebral fluid.
What does CAT stand for? - correct answer ✔✔Computerized Axial Tomography
Which generation of CT scanners is most often used? - correct answer ✔✔Generation 6 Helical or Spiral
scanners. Has couch motion and tube rotation simultaneously.
What are some improvements newer generations of CT scanners have? - correct answer ✔✔360 degrees
of detectors, multiple detector parallel layers, reduces time for scan, patient exposure is reduced,
increased image resolution.
