Defense's Nuclear Agency (history) [1947-97]

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Extra resources for Defense's Nuclear Agency (history) [1947-97]

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Set clock for 20 min. 3. Ensure camera, film back and multiformatter are set. 4. Start acquisition on camera and computer as the intravenous injection is given. 5. Record the first image on the camera for 30 s (image 1). 6. At 1 min after injection, record image for 300 000 counts (image 2). Note the time taken for this image. 7. At 5, 10 and 20 min, take images (3-5) for same time as taken to record the 1 min image. 8. At 20 min, take posterior image of bladder or catheter bag (6). This must be done, even if no counts are present, for later reference.

Give bolus injection of 99Tc m _MDP, starting camera and computer at moment of cuff release. e. hands or feet, delay start of acquisition by 7-10 s. 6. Record image on camera for 40 s. 7. Remove the 57 Co markers. 8. At 1 min after injection, record the equilibrium image for 500 000750 000 counts (depending on which part of the body is being imaged) or for 5 min, if the count rate is low. A 57CO marker spot is attached within the field of view of the collimator adjacent to the patient's right side.

If the patient is on fluid restriction, as may occur in the early phase after transplantation, this is not essential. If the patient's fluid intake is being recorded, ensure that the drink is entered on the fluid balance chart. The patient should be asked to empty the bladder immediately before starting the study. 2 RADIOPHARMACEUTICAL AND DOSE 350 MBq 99Tc m _DTPA This is the adult dose, and should be corrected on the basis of body surface area in children and very large adults. The minimum dose is 75 MBq.

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