Week 11 Flashcards
kidneys located in __
retroperitoneal space
renal parenchyma function
filters blood & makes urine
renal pelvis function
moves urine to ureter
patient prep for kidney US
Fasting not needed
500 – 600 ml of water 1 – 2 hours prior to scan
Not to empty bladder
scanning approach to kidney US
anterior, posterior, coronal, intercostal
how does kidney appear compared to liver
slightly hypoechoic
patient scanning approach for US pancreas
Patient supine
Firm pressure to displace overlying bowels
RPO may help to move bowel out of the way
Water loading may be used to fill stomach & make acoustic window
patient scanning approach for US spleen
Start with patient supine
Angle probe between ribs intercostal & posterolateral
If overlying bowel gas / lung base / rib shadows seen, slowly roll patient to improve visualization by placing sponge / roll towel under patient’s right side & opens rib cage
what causes renal sinus to appear hyperechoic
adipose tissues, intrarenal vessels, renal pelvis
causes of fetal lobulation
- Seen mainly in adults
- Incomplete fusion of developing renal lobules
causes of double collecting system
Renal sinus divided by hypertrophid column of bertin / focal cortical hyperplasia
Most common ectopic site for kidneys
lying obliquely in ipsilateral iliac fossa
causes of cross fused ectopia
- Developing kidneys fuse while in pelvis
- One kidney ascend carrying the other with it
causes of ectopic kidneys
Found outside of normal renal fossa due to birth defect / interrupted ascent during embryology
what is a common complication of acute pancreatitis
pancreatic pseudocysts
Carcinoma of pancreatic head / ampulla of vater associated with __
adenocarcinoma
Carcinoma of body & tail associated with __
Mucinous cystadenocarcinoma
acute pancreatitis raises ___ pancreatic enzymes
amylase & lipase
how does acute pancreatitis appear on US image
enlarged parenchyma with hypoechoic changes
peripancreatic fluid present
what forms wall-off collections / pseudocysts in acute pancreatitis
digestive enzymes leaking out of pancreas