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61 Cards in this Set
- Front
- Back
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Radiopharmaceuticals
Tc99m MDP Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: bone
Dose(mCi): 20 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): 2-3/bladder |
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Radiopharmaceuticals
Tc99m MAA Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Lung
Dose(mCi):4 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): 1.0/lung |
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Radiopharmaceuticals
Xe 133 Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Lung
Dose(mCi):10 Mode of Decay: Beta - Excretion: lungs Critical organ (rad/dose): 0.3?lung |
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Radiopharmaceuticals
Tl 201 Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Heart
Dose(mCi):2-4 Mode of Decay: EC Excretion: Minimal renal Critical organ (rad/dose): 2.2/kidney |
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Radiopharmaceuticals
Tc99m RBC Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Heart
Dose(mCi):20 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): 0.4/body |
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Radiopharmaceuticals
I-123 Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Thyroid
Dose(mCi):0.2 Mode of Decay: IT Excretion:GI, renal Critical organ (rad/dose): 5/thyroid |
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Radiopharmaceuticals
I 131 Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Thyroid
Dose(mCi):5-10 Mode of Decay: Beta - Excretion:GI, renal Critical organ (rad/dose): 500-1000/thyroid |
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Radiopharmaceuticals
Tc99m DTPA Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ:Renal
Dose(mCi):10 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose):2-5 bladder |
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Radiopharmaceuticals
Tc99m Mag3 Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: REnal
Dose(mCi):10 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): 2-5 bladder |
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Radiopharmaceuticals
Tc99m sulfur colloid Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Liver-spleen
Dose(mCi):5-8 Mode of Decay: IT Excretion: None Critical organ (rad/dose): 1-2/liver |
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Tc99m DISIDA
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Hepatobiliary
Dose(mCi): 5-8 Mode of Decay: IT Excretion: Biliary Critical organ (rad/dose): 1.6/bowel |
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Tc 99m HMPAO
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ:Brian
Dose(mCi): 20 Mode of Decay: IT Excretion:Renal, GI Critical organ (rad/dose):5/lacrimal gland |
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Ga67 citrate
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Infection-tumor
Dose(mCi):5-10 Mode of Decay: EC Excretion:GI, renal Critical organ (rad/dose): 4.5 colon |
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In-111 WBC
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Infection-tumor
Dose(mCi):0.2-0.5 Mode of Decay: EC Excretion:None Critical organ (rad/dose): 20/spleen |
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Tc 99m RBC
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: GI bleed
Dose(mCi): 20 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): 0.4/body |
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Tc99m O4
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ:Meckel's diverticulum
Dose(mCi): 15 Mode of Decay: IT Excretion: GI Critical organ (rad/dose): 2/stomach |
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Tc 99m MAA
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Laveen shunt
Dose(mCi): 3 Mode of Decay: IT Excretion: Renal Critical organ (rad/dose): Lung/peritoneum |
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Tc 99m sulfur colloid eggs
Organ: Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: Gastric emptying
Dose(mCi):0.5 Mode of Decay: IT Excretion:GI Critical organ (rad/dose): Colon |
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T99m sulfur colloid
Organ: ureteral reflux Dose(mCi): Mode of Decay: Excretion: Critical organ (rad/dose): |
Organ: ureteral reflux
Dose(mCi): 0.5 Mode of Decay: IT Excretion:Urinary Critical organ (rad/dose): Bladder |
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Quality assurance
Generator |
Aluminum breakthrough<10 ug/ml
Molybdenum breakthrough<0.15 uCi/1 mCi Tc99m Mo breakthrough dtermined by counting eluate in a well counter without and with lead shield Radiochemical purity: determined by TLC, Free Tc99mO4 migrates in slaine and methanol, Tc99m migrates onlyin saline |
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V/Q mismatch
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Pulmonary embolism
Vasculitis radiation therapy, wegeners Tumor compression of PA Pleural effusion Radiation therapy Hypoplastic PA |
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Causes of Pulmonary embolism
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Venous thrombus
Fat embolism tumor embolism amniotic fluid embolism Parasites, esp schistosomiasis Tald emboli in IVDU Oil emboli form ethiodol Mecury embolism (thermometer accident) Air embolism |
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Matched V/Q defects
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Consolidation/pneumonia/edema
COPD Atelectasis Tumor Bullous diseae Pneumonectomy, surgery Pneumonia Enlarge hilar nodes Edema Fibrosis Pulmonary infarction |
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Decreased perfusion in one lung
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embolus
pneumothorax massive effusion tumor pulmonary agenesis Swyer;james syndrome |
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False negative thallium studies
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Sub max exercise
noncritcal stenosis small ischemic area coronary collateral multivessel disease Medications: blunted cardiac response ( bblockers, ca channel blockers, digoxin) altered myocardial extraction (lasix, lidocaine, dipyridamole, dexamethasone, isoproteranol |
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False positive thallium study
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any cardiomyopathy
aortic valve stenosis MVP LBBB infiltrative cardiac diseae (sarcoid, chagas, amyloidosis) |
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Paradoxical septal movement
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Septal ischemia
Previous cardiac surger RV overload LBBB or placer placement |
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Pyrophosphate uptake
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MI
Unstable angina LV aneurysm Cardiomyopathy valvular calcification myocardial injury (contusion, surgery, cardiversion, myocarditis, pericarditis) |
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Non visualization of GB in HIDA scan
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Give morphine (increases pressure) or cholecystokinin (contract GB)
Acute cholecystitis Prolonged fasting Recent meal |
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Biliary system not visualized in HIDA scan
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Biliary atresia
Long standing bile duct obstruction |
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Low hepatic activity/renal activity in HIDA
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Severe hepatocellular disease
Neonatal hepatitis (can pretreat with 5mg/kg for 5 days) |
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Bowel not visualized in HIDA
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Choledocholithiasis
Ampullary stenosis |
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Abnormal raditracer collection in HIDA
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Bile leak
Choledochal cyst Caroli's disease Duodenal diverticulum |
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False negative HIDA scan
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Duodenal diveticulum may simulate GB
Accessory cystic duct |
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False positive HIDA scan
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Recent meal
Prolonged fasting (ICU patients, parental nutrition) Pancreatitis Hepatocellular dysfunction Right lower lobe pneumonia Cholangiocarcinoma involving cystic duct |
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Focal liver uptake with sulfur colloid
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FNH
Regenerating nodule Budd-chiari syndrome (hot caudate lobe) vena cave obstruction (umbilical artery delivery to segment 1) |
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Bleeding studies
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uptake conforming to bowel with no change over time: IBD, faulty labeling (o4 excreted into bowel)
uptake conforming to bowel with progressive accumulation(hemorrhage) Uptake not conforming to bowel (aneurysm) |
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RLQ activity on Meckel scan
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Meckel'diverticulum or other duplication cyst with ectopic gastric mucosa
very active bleeding sites, tumors, IBD |
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Rapid gastric emptying
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Post op: BI, BII
PUD, ZE Drugs: erythromycin, reglan, domperidone Sprue Vagotomy with distal partial gastrectomy |
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Delayed gastric emptpying
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Diabetes
Hyperglycemia Acidosis Ileus Chronic gastritis Chronic ulcer disease Drugs-opiates, antacids, gastrin |
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Focal renal defects
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Tumor: solid or cystic
Infection: abscess, cortical scarring Congenital: duplex system Trauma Vascular: complete stenosis |
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Focal hot renal lesions
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collecting system
urinary leak crossfused ectopia Horseshoe kidney |
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Dilated ureter or collecting system
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reflux
obstructed ureter |
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Delayed uptake and excretion
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Prerenal: arterial stenosis, venous thrombosis
Renal: ATN, glomerulonephritis, chronic renal failure Post renal: obstruction |
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Nonvisualized kidney
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nephrectomy
Ectopic kidney in pelvis, fused ectopia Renal artery embolus renal artery occlusion |
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Testicular decreased uptake
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torsion
orchiectomy |
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Increased uptake in testicle
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orchioepididymitis
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Testicular ring sign
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late torsion
Tumor Abscess Trauma |
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Focal hot spot on bone
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Tumor
Inflammation: osteo, infectious, inflammatory, metabolic arthritis Congenital: OI, TORCH Metabolic: marrow hyperplasia, paget's, fibrous dysplasia Trauma: stress fx, avulsion injuries, osteonecrosis, sudecks dystrophy, hip replacement, child abuse Vascular: sickle cell disease (infect vs infarct) |
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Focal cold bone lesions
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Multiple myeloma, lymphoma
Renal thyroid Neuroblastoma Primary: UBC, ABC, EG Vascular: infarct, aseptic necrosis, radiation Artifact: overlying pacer, barium, jewelry |
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Superscan
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Mets: prostate, lung ca, breast ca
Metabolic: hyperparathyroidism, renal osteodystrophy, osteomalacia, pagets Myeloproliferative: myelofibrosis |
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Diffuse periosteal uptake (tramtrack sign)
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HPO
child abuse Thyroid acropachy |
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Extraosseous activity
Soft tissue |
Renal failure
radiotherapy ports Myositis (ossificans, dermatomyositis, rhabdomyolysis) tumor with calcifications |
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Extraosseous activity -renal
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obstruction
calcifying mets radiation tokidney RCC |
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Extraosseous activity
diffuse |
obstruciton
dehydration mets rcc chemotherapy Thalassemia Iron overload Pyelonephritis |
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Extraossous activity breast
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Pregnancy, lactation
Inflammatory breast lesion steroids |
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Extraosseous activity liver
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mets
simulatanous admin of sulfur colloid diffuse hepatic ncrosis elevated serum aluminum colloid formation hepatoma amyloidosis |
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Extraosseous activity spleen/chest/other
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Spleen: blood dyscrasia (SSD, thalassemia)
Chest: cardiac infarction, lung tumors Other: urine contamination |
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Diffusely increase thyroid uptake
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>30%, enlarged gland, pyramidal lobe
Graves Early hashimotos Rare (iodine starvation, thyroid metabolism anomaly |
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Diffusely decreased thyroid uptake
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thyroiditis (painful-subacute granulomatous and dequervains, (painless- subacute lymphocytic), late hashimotos)
Medications- thyroid hormone therapy, contrast agent, lugol's solution PTU Tapazole Thyroid ablation/surgery |
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heterogenous thyroid uptake
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Multinodular goiter
Multiple autonomous nodules Hashimoto's thyroiditis Cancer |
