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Computed Tomography Questions and Correct Answers/ Latest Update / Already Graded

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1st and 2nd generation scanners Ans: translate---rotate 3rd generation scanners Ans: rotate---rotate 4th generation scanners (3b) Ans: rotate---fixed 5th generation scanners (3c) Ans: spiral/helical -has lsip ring so can do single motion all around patient 2 | Page axial CT Ans: -first type ever done -takes image slices top to bottom -uses bone windows (bone uses high number =4,000, while soft tissue uses low number = 300) coronal CT Ans: -takes pic front to back -used a lot to visualize sinus

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Computed Tomography Questions and
Correct Answers/ Latest Update /
Already Graded
1st and 2nd generation scanners


Ans: translate---rotate




3rd generation scanners


Ans: rotate---rotate




4th generation scanners (3b)


Ans: rotate---fixed




5th generation scanners (3c)


Ans: spiral/helical


-has lsip ring so can do single motion all around patient

, 2 | Page

axial CT


Ans: -first type ever done


-takes image slices top to bottom


-uses bone windows (bone uses high number =4,000, while soft tissue uses

low number = 300)




coronal CT


Ans: -takes pic front to back


-used a lot to visualize sinuses


-use bone windows


-restorations in teeth interfere with image= beam hardening




sagittal CT


Ans: -image taken from one side to other




isodense measurements (2D)

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