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5 Cards in this Set
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- Back
- 3rd side (hint)
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Three phase positive bone scan
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Truama
Osteomyelitis -false-negatives with disrupted blood supply and abscess Bone tumor |
Reflex sympathetic dystrophy
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Nonvisulatization of the GB on hepatobiliary scan
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Acute cholecystitis
-nonvis of GB at 4 hours -morphine at 1 hour in cases of normal biliary to bowel transit and nonvisualization of the GB within 30 minutes of morphine administration Chronic cholecystitis -Delayed vis of the GB or delatyed biliary to bowel transit (absence of bowel activity at 1 h despite vis of the GB) -confirmed by EF of <35% (obtained by 30min infusion of CCK) Inadequate patient preparation -porlonged fasting -recent meal -prolonged hyperalimentation -pretreat with CCK 30min prior to injection |
Severe hepatocellular disease
High-grade biliary obstruction -in abscense of bowel activity, morphine is contraindicated |
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Focal intra-abdominal activity on pertechnetate imaging
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Meckel diverticulum
-congenital persistent of the omphalomesenteric duct -pretreat with cimetidine (blocks radiotracer release from ectopic mucosa), glucagon (enhances extopic mucosal uptake), and glucagon (decreases small bowel peristalsis) Focal intra-abdominal infectious or inflammatory process -increased blood pool that fades over time Physiologic renal/urinary activity |
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Persistent hepatogram on neonatal hepatobiliary imaging
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Biliary atresia
-Kasai surgical procedure -pretreat with phenobarbital Neonatal hepatitis -poor hepatic uptake -bowel activity nearly always present at 24hrs Intrahepatic cholestasis from sever parenhcymal disease |
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Persistent focal cervical uptake on delayed sestamibi imaging
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Parathyroid adenoma
-hypercalcemia and hypophosphatemia due to elevated PTH -if false-negative, I-123 or IV Tc99m thyroid scan is performed and subtracted from an early Tc99m sestamibi image Thryoid adenoma or carcinoma Metastatic lymphadenopathy |
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