Imaging of Abdo using RNI Flashcards
abdomen scan types
renogram HIDA infection imaging liver/spleen scan gastric emptying
clinical indications for renogram
abdo pain
loin to groin pain
sent for CT (result = hydronephrosis) - swollen
PUJ obstruction?
preparation for renogram
letter to tell patient when/where to come
eat and drink as normal
questionnaire to assess suitability for diuretic
empty bladder before scan
radionuclide for renogram
Tc99m (techniceum) Mag 3, given via cannula, scan begins immediately following injection, ordered 24 hrs before hand
scan for renogram
30min dynamic acquisition
30 second frames (60 frames)
Furosemide at 15mins to encourage kidney emptying
full bladder image at the end
if necessary, micturating cystogram after
normal result for renogram
peak in 3 mins
spontaneous emptying
low level at end of exam
abnormal results for renogram
delayed peak
delayed emptying
obstruction
clinical indications for gastric emptying
unable to eat much food
feeling of fullness
can only eat small amounts
preparation for gastric emptying
letter to tell patient where/when to come
no food/drink on the morning of the examination
questionnaire to assess porridge suitability
appropriate clothing
radionuclide for gastric emptying
patients ingest not have injection
porridge made up in department and mixed with a measured dose of Tc99m colloid 20-40MBq via syringe
Patient eats porridge in the first 10 minutes of the examination
scan for gastric emptying
imaged sitting up
camera facing out room
dynamic imaging (1 minutes frames for 30 minutes)
static images every 30 minutes till stomach empty
normal result for gastric emptying
Rapid filling
Spontaneous emptying by approx:
- 30% after 30 minutes
- 90% after 2 hours
abnormal result for gastric emptying
- Delayed filling
- Evidence of reflux
- Delayed emptying
what does HIDA stand for
hepatobiliary iminodiacetic acid
