Nuclear Medicine - Bone Exam 1 Correct 100%

Accumulation of radionuclides in the bone is related to both the rate of production and _______ -ANSWER Vascularity Visualization of the Kidneys on a 99mTc-MDP scan is considered: -ANSWER normal, because 99mTc-MDP is excreted via the urinary tract A bone scan image of a female patient shows radiopharmecutical uptake in the breasts. The technologists should: -ANSWER consider this to be a normal variant For lytic lesions to be seen radiographically, the loss of mineral content of the bone must be approximately: -ANSWER 50% Patients having a bone scan should be encouraged to void urine frequently between injection and delayed scanning to: -ANSWER reduce radiation dose to the bladder Equal time-imaging for bone scanning refers to the technique in which: -ANSWER one area is imaged for preset counts with the time recorded and all subsequent images are taken for that same time interval Skeletal metastatic disease has the greatest involvement in the _____ skeletion -ANSWER axial Metastatic lesions that have no osteoblastic activity are usually: -ANSWER detected as a photon-deficient area In evaluation of primary bone neoplasms, bone scans: -ANSWER are used to detect disease elsewhere skull, thorax, vertebral column form the _____ skeleton -ANSWER axial How much liquid should a patient be instructed to drink during the delay period of a bone scan? -ANSWER 4 to 6 glasses A patient is entering the osseous phase of a routine three-phase bone scan. The technologists should: -ANSWER begin to take 2 to 3 hour delayed images For flow study, what is an appropriate framing rate? -ANSWER 2 to 5 sec/frame Increased lymph node uptake of Tc-MDP might be due to which of the following? -ANSWER infiltrated dose When obtaining a posterior bone scan of the lumbar spine, how far should the collimator be placed from the patient? -ANSWER As close as possible Which of the following is an appropriate matrix size for a delayed bone scan? -ANSWER 256x256 Compared with a LEAP collimator, a LEHR collimator will have what effect on bone scanning? -ANSWER increased resolution Which of the following instructions are appropriate for patients to follow between the time of injections and the time of scanning? -ANSWER drink at least 2 glasses of wate r Concerning patient motion while a bone scan is being acquired, which of the following statements are true? -ANSWER in most instances, the artifact is easily recognized When imaging the photopeak of Tc-99m, a 20% of window centered on _____ is the most appropriate -