GI radpharms and doses

Hepatobiliary (Biliary) Study (HIDA)

(~6mCi via intravenous injection) Derivatives of Tc-99m iminodiacetic acid (Tc-99m – IDA); Tc-99m mebrofenin (used at Mayo).

HIDA CCK dose

0.02 ug/kg

HIDA morphine dose

0.04 mg/kg

HIDA phenobarbital dose

5 mg/kg/day 3-5 days

Liver / Spleen Study

(~6mCi via intravenous injection) Tc-99m Sulfur Colloid.

Liver Hemangioma

(~20mCi via intravenous injection) Tc-99m labeled red blood cells (Ultra Tag method preferred).

Gastrointestinal Bleed Study

(~20mCi via intravenous injection) Tc-99m Labeled Red Blood Cells (used at Mayo, most common); Tc-99m Sulfur Colloid (uncommon).

Meckel Diverticulum Study - adult

5mCi Tc-99m Sodium Pertechnetate.

Gastric Empty (GE) only

(1mCi) 99mTc sulfur colloid incorporated into 2 eggs.

Gastric Empty and Small Bowel Transit (GE/SBT)

(1mCi) 99mTc sulfur colloid incorporated into 2 eggs.

Colonic Transit (CT) only

(80-120uCi) 111-In Chloride bound to charcoal, enclosed in a capsule coated with Eudragit S-100.

Gastric Mucosa - Accommodation

(20 mCi IV injection) TcO4- (Sodium pertechnetate).

Salivary Scan

(10 mCi IV injection) 99mTcO4- (Pertechnetate ion).

LeVeen Shunt Study Direct into port

.5 mCi MAA

LeVeen Shunt Study Intraperitoneal

4 mCi MAA

Gastroesophageal Reflux Study (Adult)

(~1 mCi orally) 99mTc Sulfur Colloid diluted in orange juice with diluted HCL acid.

Gastroesophageal Reflux Study (Pediatric)

(250-500 uCi orally) 99mTc- Sulfur Colloid in milk or formula.

Esophageal Empty/Transit Study (Traditional)

(600 uCi total, administered as 3 boluses of 200 uCi each) 99mTc Sulfur Colloid (in water or lemon pudding)

Esophageal Empty/Transit Study Katzka

1 mCi SC in breakfast