Ch. 3 Abdomen (workbook) Flashcards
what position best demonstrates a possible aortic aneurysm in the prevertebral region of the abdomen
lateral position
radiograph of AP abdomen shows the left iliac wing is more narrowed than the right, what is the positioning error
slight rotation into an RPO
what positioning routine is used to rule out the presence of a kidney stone
KUB
which projection best demonstrates free air under the diaphragm
PA chest
recommended overlap when using 2 landscapes places IRs for an AP projection of a supine abdomen
1-2” (3-5 cm)
the CR for an erect abdomen is placed where
2” (5 cm) above iliac crest
what decub best demonstrates possible aneurysms, calcifications of the aorta or unbiblical hernias
dorsal decub
which decub position of the abdomen best demonstrates intraperitoneal air in the abdomen
left lateral decub
what body habitus might require 2 landscape IRs to be taken so the entire abdomen is included
hypersthenic
rotation on a KUB can be determine by loss of symmetry in these 4 things
- ischial spines
- iliac wings
- outer rib margins
- obturator foramen - if visible
where is CR for a supine AP projection of abdomen
on iliac crest
radiograph shows distended loops of air-filled small intestine
Crohn’s disease
large amount of air trapped in sigmoid colon with a tapered narrowing at the site of obstruction
volvulus
deep air-filled mucosal protrusions of colon wall on a radiographic image
ulcerative colitis
thin crest-shaped radiolucency underneath diaphragm
pneumoperitoneum
general abdominal haziness on radiographic image
ascites
air-filled “coiled spring” appearance
intussusception
chronic inflammation of the intestinal wall that may result in bowel obstruction
Crohn’s disease
a twisting of a loop of bowel creating an obstruction
volvulus
bowel obstruction caused by a lack of intestinal peristalsis
adynamic (paralytic) ileus
abnormal accumulation of fluid in the peritoneal cavity
ascites
telescoping of a section of bowel into another loop of bowel
intussusception
inflammatory condition of the colon
ulcerative colitis
free air or gas in peritoneal cavity
pneumoperitoneum
imaging modality used to evaluate patients with acute appendicitis
ultrasound
preferred imaging modality for examining the gall bladder quickly
ultrasound
gonadal shielding for females - top of shield should be placed _____ and bottom of shield _____
at or slightly above ASIS; symphysis pubis
best mechanism to control involuntary motion
short exposure time
primary cause of involuntary motion in the abdomen
peristaltic action of bowel
what level in iliac crest at
L4-L5
which topographic landmark is found at the level of L2-L3
inferior costal margin
what topographic landmark corresponds to the inferior margin of the abdomen
symphysis pubis
where are the ischial tuberosities in relation to the symphysis pubis
1 1/2” (1-4 cm) distal
what level is the greater trochanter at
superior border of pubic symphysis
double fold of peritoneum that connects the transverse colon to the greater curvature of the stomach
greater omentum
what structure helps stabilize and support the small intestine
mesentery
organs located posteriorly to or behind the serous membrane lining of the abdominopelvic cavity are referred to as
retroperitoneal organs
radiographic study of the entire urinary system
intravenous urogram (IVU)
what endocrine gland is located superomedial to each kidney
suprarenal (adrenal)
where is the pancreas located in relation to the stomach
posteriorly
what two parts of the large intestine is the sigmoid colon located between
descending colon and rectum
what quadrant does the large intestine begin and what is that saclike area called
RLQ; cecum