CT and CT Head, Chest, and Abdomen || A+ Guaranteed.
computed tomography definition correct answers a narrow beam of x-rays is aimed at a patient
and quickly rotated around the body, producing signals that are processed by the machines
computer to generate cross-sectional images or slices of the body
cross-sectional images are aka correct answers slices
images of deep internal structures focusing on a specific plane within the body correct answers
tomography
conventional tomography uses: correct answers blurring technique
CT uses: correct answers computerized mathematic reconstruction techniques
who developed the first scanner correct answers Godfrey Hounsfield
the 1st scanner initially was only for correct answers head scans
2 advantages of CT correct answers 1) internal structures are not superimposed by one another
and not degraded by secondary and scatter radiation
2) more sensitive to tissue type differentiation
first generation:
beam -
detectors-
method -
rotates by __ degree correct answers pencil thin beam
1
translate rotate (fixed - rotates as a whole)
one degree
second generation:
beam -
method -
detectors - correct answers fan xray beam
translate rotate
multiple
third generation:
beam -
method -
detectors - correct answers fan xray beam
smooth rotational
many
, fourth generation:
method -
beam _
detectors - correct answers rotate stationary
fan shaped xray beam
360 degree ring
fifth generation:
specifically for -
aka -
method -
speed -
why? correct answers cardiac tomography
cine CT scanners
stationary stationary
high
to dec motion of heart
sixth generation:
type -
technology - correct answers helical
slip ring technology
seventh generation:
most __
beam -
method -
images - correct answers recent
cone shaped beam
sweep or translation
multiple images produced simultaneously
2 major elements correct answers scan unit
operator console
operator console consists of correct answers computer
operators controls
monitors
image archiving
contrast controls
basic principle of CT correct answers the internal structure of any 3D subject can be
reconstructed from many different projections or views of that subject
3D tissue elements correct answers voxel
computed tomography definition correct answers a narrow beam of x-rays is aimed at a patient
and quickly rotated around the body, producing signals that are processed by the machines
computer to generate cross-sectional images or slices of the body
cross-sectional images are aka correct answers slices
images of deep internal structures focusing on a specific plane within the body correct answers
tomography
conventional tomography uses: correct answers blurring technique
CT uses: correct answers computerized mathematic reconstruction techniques
who developed the first scanner correct answers Godfrey Hounsfield
the 1st scanner initially was only for correct answers head scans
2 advantages of CT correct answers 1) internal structures are not superimposed by one another
and not degraded by secondary and scatter radiation
2) more sensitive to tissue type differentiation
first generation:
beam -
detectors-
method -
rotates by __ degree correct answers pencil thin beam
1
translate rotate (fixed - rotates as a whole)
one degree
second generation:
beam -
method -
detectors - correct answers fan xray beam
translate rotate
multiple
third generation:
beam -
method -
detectors - correct answers fan xray beam
smooth rotational
many
, fourth generation:
method -
beam _
detectors - correct answers rotate stationary
fan shaped xray beam
360 degree ring
fifth generation:
specifically for -
aka -
method -
speed -
why? correct answers cardiac tomography
cine CT scanners
stationary stationary
high
to dec motion of heart
sixth generation:
type -
technology - correct answers helical
slip ring technology
seventh generation:
most __
beam -
method -
images - correct answers recent
cone shaped beam
sweep or translation
multiple images produced simultaneously
2 major elements correct answers scan unit
operator console
operator console consists of correct answers computer
operators controls
monitors
image archiving
contrast controls
basic principle of CT correct answers the internal structure of any 3D subject can be
reconstructed from many different projections or views of that subject
3D tissue elements correct answers voxel
