EXAM #4 (Ch. 16) Flashcards

1
Q

what are the membranes that line the walls of the abdomen?

A

parietal peritoneum

visceral peritoneum

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2
Q

what do you want to see in an abdominal image (high or moderate contrast)?

A

moderate contrast

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3
Q

what [5] things will a properly exposed abdominal image show?

A

sharp outlines of psoas muscles

lower border of liver

kidneys

ribs

transverse processes of lumbar vertebrae

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4
Q

what do you have to do for an optimal radiograph of the abdomen?

A

proper collimation

pubic symphysis to upper abdomen

SID

proper alignment

no rotation of patient

soft tissue brightness and contrast

markers

diaphragm without motion

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5
Q

what’s the most commonly performed abdominal exam?

A

supine AP projection, aka KUB

kidneys, ureters, bladder

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6
Q

what do you do if a patient cannot stand upright for an AP projection?

A

lateral recumbent position

left lateral decubitus

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7
Q

what do you do if a patient cannot stand or lie on their side for an image?

A

R/L lateral projection, dorsal decubitus position

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8
Q

what’s the respiration phase?

A

suspend at the end of respiration

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9
Q

why is a left lateral decubitus done?

A

if a patient cannot stand upright for an AP projection

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10
Q

according to the book: how long should a patient lie on their side for a left lateral decubitus before the image is taken?

why?

A

5 minutes

it allows air to rise and fluid to settle

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11
Q

what is shown: R/L lateral abdominal position?

A

pre-vertebral space occupied by the:

abdominal aorta

calcifications

tumor masses

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12
Q

what is shown: dorsal decubitus position?

when is it useful?

A

prevertebral space

useful when determining air-fluid levels in abdomen

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13
Q

what are the organs in the abdominal cavity?

A

stomach

large + small intestines

liver

gallbladder

spleen

pancreas

kidneys

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14
Q

what are the organs in the pelvic cavity?

A

rectum

sigmoid of large intestine

bladder

reproductive

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15
Q

what is the membrane that covers the whole abdominopelvic cavity?

what two layers cover the sac which lines the abdominopelvic cavity?

A

peritoneum

inner = visceral peritoneum

outer = parietal peritoneum

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16
Q

what is the omenta?

what organs

A

supports the viscera of the peritoneum

stomach, colon

17
Q

what is the mesentery?

what organs?

A

supports the viscera of the peritoneum

stomach, small intestine, pancreas, spleen

18
Q

what is the peritoneal cavity?

A

the space between the two layers of the peritoneam and contains serous fluid

19
Q

what is the cavity posterior to the peritoneal cavity?

what organs are located here?

A

retroperitoneum

kidneys and pancreas

20
Q

how can you evaluate rotation in a KUB?

A

spinous process in the center of the lumbar vertebrae

ischial spines of the pelvis symmetric, if visible

alae or wings of the ilia symmetric

21
Q

why would a three-view abdominal series be ordered?

what does it consist of?

A

to rule out free air, bowel obstruction, and infection

AP supine
AP upright
PA chest

22
Q

where do you center for an AP decubitus?

A

center the CR with the mid-sagittal plane of the body

center collimated field/IR two inches above iliac crest

23
Q

where do you center for an upright?

A

center the mid-sagittal plane of body to the midline of the grid

center collimated field/IR two inches above iliac crest

24
Q

know which planes are placed parallel and perpendicular

A

think about the following and their relation to one another:

sagittal, mid-sagittal

coronal, mid-coronal

horizontal, mid-horizontal

25
Q

when will the x-ray beam be horizontal?

A

decubitus

lateral

upright

dorsal

26
Q

when will the x-ray beam be vertical?

A

KUB/AP abdomen

lateral

27
Q

why use a PA instead of an AP

A

PA reduces gonadal dose and should be considered when kidneys aren’t important