Mosby Book exam 1 wrong answers

Question 1

which of the following is concidered isomolar:

A) iodixanol

B) iopamidol

C) iohexol

D: ioversol

Answer 1

A

Question 2

Which of the following is considered one of the ionic radiopaque contrast media (RCM)

A) iohexol

b) iohalamate meglumine
c) iopamidol
d) ioversol

Answer 2

B

Question 3

The radiation dose index calculation that takes into account the variations in absorbtion across the field of view due to beam hardining is termed:

a) CTDIw
b) CDDI100
c) CTDI vol
d) MSAD

Answer 3

A

Question 4

unit that Expresses total PT dose from a helically aquiered CT exam

Answer 4

mGy-cm

Question 5

is calculated from measurements made with dosimeters positioned at te center and perifery of a phatom and accounts for varience in dose distribution due to the effects of beam hardining:

Answer 5

CTDIw

Question 6

Hepatic arterial phase happen at:

Answer 6

25-35s

Question 7

abdominal bifercatino happens at

Answer 7

L4

Question 8

on an ECG at what point in the R-R interval is the heart in diastlole:

Answer 8

55-75%

Question 9

in a rt lateral decubitus, the right isde is:

Answer 9

down on the table

Question 10

For an exam of the neck what wouould be an appropriate survey:

Answer 10

3-6mm

Question 11

most common wrist carble bone to have a fracture:

Answer 11

scaphoid

Question 12

what technique can remove cardiac pussation artifact durring a CTA of the chest fot pulmonary embolism?

Answer 12

retrospective ECG gating,

if the artifact is present it has to be retrospective.

Question 13

diffuse fatty infiltration of the fatty parechyma:

Answer 13

steatosis

Question 14

during a ct of the larnx, what is the pourpos of having the pt vocalize:

Answer 14

to evaluate the vocal cords

Question 15

brpncidis, emphysima,aspestossis, sarcoidosis

Answer 15

intersticial lung disease

Question 16

abnormal comunication between the bowel and the bladder:

Answer 16

enterovesicle fistula

Question 17

bowel clense before a CT colongraphy

Answer 17

caharsis

Question 18

cramping pain in the legs due to poor circulation:

Answer 18

claudation

Question 19

imiging plane parellel to the foots plantar surface

Answer 19

axial

Question 20

pituitary glad can best be seen in what plane:

Answer 20

coronal

Question 21

the adult spinal cord ends at what level:

Answer 21

l1-l2

Question 22

fibroid tumor of the uterus

Answer 22

leiomyoma

Question 23

which anatomic organs is located within the peritoneal cavity:

pncreas

kidney

uterus

liver

Answer 23

liver

Question 24

an exam of the pelvis should be from

Answer 24

the illiac crest to the pubic symphysis

Question 25

the SFV for the c-spine:

Answer 25

large SFOV 48-50CM LARGE DFOV 10-15CM

Question 26

to show air trapping in the brocheal tre you would use a MPVR know as:

Answer 26

min-IP

Question 27

a MDCT has a beam shape of:

Answer 27

cone

Question 28

a series of aquisitions of one area over a period of time:

Answer 28

cine

Question 29

the rate at which a quantity of x-radiation emited passes throug a unit area over time:

Answer 29

photon flux

flux=rate

fluence = quantity

Question 30

a standard CT image reconstructed on a 512x512 matrix has a digital size of:

Answer 30

0.5mb

Question 31

the relationship between the linnear attenuation coefficent of an object and the calculated CT number:

Answer 31

linearity

Question 32

the high frequenct generator is locate where:

Answer 32

inside the operators console

Question 33

3D CT technique that uses all the voxel info with adjustments to opacity

Answer 33

Volume rendering

Question 34

mathmatical filter to remove blurring:

Answer 34

convolution

Question 35

used to record flashes of light in a SSD

Answer 35

photodiode

Question 36

how do you increace average energy:

Answer 36

increase filtartation.

Question 37

when a pt is too big for the gantry it causes:

Answer 37

out of field artifact: solved by centering

Question 38

perpendiculare to the original plane of imaging:

Answer 38

orthogonal