Page 55 - Radiology Book

nuclear medicine
53
Exam/Body Part
Indication
NPO
Additional instructions
Exam time
Liver SPECT (labeled RBCs)
Evaluation for hepatic hemangioma
1 hour initially; 40 minutes 1 hour later
Liver/spleen study
Detection of accessory spleen; assess size of liver or spleen; chronic liver disease
45 minutes
Gastric emptying study
Evaluation of gastric dysmotility
After midnight
Prefer to do exam in morning
60-90 minutes
Gastrointestinal bleeding study
Localization of GI bleeding site
90 minutes (delayed image might be needed)
Renogram with or without Lasix
Evaluation for obstruction; renal transplants; basic perfusion and function
Well hydrated day of exam
45 minutes
Captopril renogram Renogram (DMSA)
Diagnosis of renovascular hypertension
Discontinue ACE inhibitors 48 hours prior to exam; no diuretics 24 hours prior to exam
30 minutes initially; 90 minutes 1 hour later
Thyroid uptake and scan (6 and 24 hour)
Evaluation of Grave’s; hyperthyroid or hypothyroidism; chronic thyroiditis; hot or cold nodules
2 hours prior to receiving capsule
Off thyroid hormones (T-4) 4 weeks; (T-3) at least 7-10 days. No IV contrast studies for 4 weeks
10 minutes initially to receive capsule; patient returns at 6 and 24 hours for scans
Diagnosis of pyelonephritis; evaluation of renal masses; quanti cation of renal function
15 minutes initially; 30 minutes upon return after 3 later
Nuclear