<prompt> Radioisotope scan used for diagnosing ectopic gastric mucosa in Meckels diveiculum: March 2012Gallium citrateThalliumSeleniumTechnetium-99 peechnate  <response>: Ans: D i.e. Tecnetium-99 peechnate Uses of radioisotopes Gallium citrate is useful for tumoursabscess Thallium scan is used to study myocardial perfusion Selenium is useful in thyroid malignancy For detection of ectopic gastric mucosa in Meckels diveculum, Tc-99 peechnate is used Uses of radiotherapy Hot spot in MI is detected by: Technetium scan Pancreatic scanning is done by: Selenium 75 Scan used for parathyroid gland: Sestamibi scan Scan for measurement of renal GFR: Tc99-DTPA scan Vesicourethral reflex VUR is seen by: MAG3-tc99 scan Isotope used in thyroid scan: 1-131 99Tc scan shows hot spot in: Adenolymphoma Salivary gland tumour PACS picture archiving and communication system: New system completely computerized network to replace conventional analogue film and paper clinical request forms and repos Brachytherapy: Radiation therapy in which sources are placed within or near tumour for therapy Gamma knife using gamma rays is used in: Stereotactic surgery cuts tumour in different location 3D Mantle irradiation is done in: Hodgkins disease Hyper-fractionation radiotherapy is used to treat: Lung cancer Intra-operative radiotherapy is used to treat: Pancreatic Ca Emergency radiotherapy is given in: -- SVC syndrome, -- Pericardial tamponade RAID RadioActive Iodine Uptake test is done mostly using: 1-123 Photodynamic therapy with hemato-porphyrins and light is used in the treatment of: -- Colon Ca, -- Skin Ca 