1. Background 1. PET/CT (positron emission tomography/computed tomography) using FDG (fluorodeoxyglucose) is widely used for evaluation of cancer patients. 2. Bowel uptake of FDG is a serious problem that hampers the proper reading of PET/CT. 3. There is no widely-accepted method to reduce the bowel FDG uptake. 2. Purpose 1. To know whether pinverin (pinaverium bromide) application during PET/CT can reduce bowel uptake of FDG. 2. Pinverin is a calcium-channel blocker that ameliorates the bowel contraction. 3. Pinverin may be useful to reduce bowel FDG uptake by ameliorating the bowel contraction during PET/CT acquisition. 3. Method 1. Intervention versus control: administration of single tablet of pinverin (50mg) perorally versus simple water (\~100mL). 2. Timing of administration: At the time of FDG injection. PET/CT images will be acquired 1hr post FDG injection. 4. Primary outcome 1. SUV (standardized uptake value) difference between pinverin administered patient group versus control group. 2. SUV (standardized uptake value) is calculated as: (decay corrected radioactivity in mCi/mL) x (body weight in g) / (injected radioactivity in mCi)
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
58
pinverin 50 mg per oral single dose versus simple water ingestion
same amount of water for pinverin administration
Seoul National University Bundang Hospital
Seongnam-si, Gyeonggi-do, South Korea
SUV (standardized uptake value)
SUV is the quantitative parameter of FDG uptake during PET/CT and represents the degree of relative FDG uptake in a specific lesion. SUV is calculated as: (decay-corrected radioactivity in mCi/mL) x (body weight in g) / (injected radioactivity in mCi). The unit of SUV is g/mL.
Time frame: 1 hour after FDG (the radiopharmaceutical for PET/CT) injection
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