LATEST 2024/2025 COMPUTED TOMOGRAPHY FOR TECHNOLOGISTS CH. 1ACCURATE ANSWERS

LATEST 2024/2025 COMPUTED
TOMOGRAPHY FOR TECHNOLOGISTS
CH. 1ACCURATE ANSWERS

, LATEST 2024/2025 COMPUTED
TOMOGRAPHY FOR TECHNOLOGISTS
CH. 1ACCURATE ANSWERS
Spatial resolution - CORRECT ANSWERSAbility of a system to resolve as separate forms small objects that
What defines the z axis? - CORRECT ANSWERSThe thickness of the cross sectional slice is referred to as
the Z axis.



Define pixel, voxel, and matrix. - CORRECT ANSWERSpixel is 2D picture element

voxel is 3D volume element, has Z axis.

matrix is the grid formed by rows and columns of pixels



Explain beam attenuation. What determines a structure's ability to attenuate the X-ray beam? -
CORRECT ANSWERSAttenuation is the degree to which an X-ray beam is reduced by an object.
Attenuation depends on an object's thickness, density, and atomic number.



What unit quantifies a structure's ability to attenuate the X-ray beam? - CORRECT ANSWERSHounsfield
unit.

are very close together. Also called high contrast resolution or detail resolution



Low contrast resolution - CORRECT ANSWERSthe ability of the system to differentiate between objects
with similar densities



Temporal resolution - CORRECT ANSWERSAbility to deliver image detail in the smallest window of time.



z-axis - CORRECT ANSWERSPlane that correlates to the slice thickness or depth of the CT slice.



Collimators - CORRECT ANSWERSMechanical hardware that resembles small shutters and adjusts the
opening based on the operators selection