Ramer · Alavi Nuclear Medicine Technology

10410 Gastrointestinal Tract Scintigraphy32) Which is the method of choice for labeling red bloodcells with 99m Tc if the goal is to have the least amountof free pertechnetate in the resulting dose?a. invitrob. invivoc. modified invivod. the amount of free pertechnetate will be the samein all cases33) Why is the labeling efficiency important for imagingof GI bleeding with 99m Tc RBCs?a. a small decrease in labeling efficiency may lead toa false negative resultb. if the patient is actively bleeding, the radiopharmaceuticalmust be prepared as quickly as possiblec. 99m Tc pertechnetate will be taken up by the Kupffercellsd. free pertechnetate is secreted by the stomachand the kidneys34) When performing a gastric emptying study, it isimportant to scan the patient in the erect position topromote emptying.a. trueb. false35) Which of the following studies does not require anyfasting prior to the examination?a. gastric emptying studyb. hepatobiliary scanc. esophageal transitd. gastroesophageal reflux studye. gastrointestinal bleeding scan