Part II

Question 1

Generator [..] phase, [..] pulse

Answer 1

Three phase, 12 pulse
4% voltage ripple

Question 2

Power rating of x-ray gen

Answer 2

85-100 kW at 100 kV

Question 3

[..] to read 1 vid fram

Answer 3

33 ms

Question 4

Time required for the XRT to be switched on and reaches selected levels of kVp and mA

Answer 4

Interrogation Time

Question 5

Fraction of time that the XRT is energized

Answer 5

Duty Cycle

Question 6

Time required for the XRT to be switched off

Answer 6

Extinction time

Question 7

Essential for reducing patient radiation dose and should be routinely used

Answer 7

Plus progressive fluoroscopy

Question 8

Target angle required [..] and [..]

Answer 8

10 to 20 degrees

Question 9

Photosensitive semiconductor where camera forms an image by electronically scanning

Answer 9

Target

Question 10

Digital formation sampling [pixel formation]

Answer 10

1. Place mesh over image
2. Assign each square a pixel
3. Pixel values from digital images

Question 11

Standard resolution on to tv monitor: [..]
[..] -upscanned

Answer 11

525 lines/frame
1024 -upscanned

Question 12

Displays the image twice the acquisition resolution “smoother”

Answer 12

Upscanned

Question 13

Provides option of viewing an image b or w or vice versa

Answer 13

Density reversal

Question 14

(Scout) allows any image w/in a series to be selected or used as. Mask (pre contrast image)

Answer 14

Masking

Question 15

Allow the use of diff images to be used as masks within a single series

Answer 15

Remasking

Question 16

Used to adjust a mask to ave an image, moved by motion

Answer 16

Pixel shifting

Question 17

Provides localizing anatomic interference points on the images (putting l or r)

Answer 17

Land marking