Every hour, mammalian cells have 50-100 as much spontaneous DNA damage from oxidative metabolism as they would if they had been exposed to what? A. 10 mGy of low-LET radiation (a CT scan) B. 0.0004 mGy low energy X-rays from a DEXA Scan C. A 2.0 Gy fraction of Radiotherapy D. 1.0 mGy from a mammogram The Chernobyl Forum report says there is “no convincing evidence” that there has been a rise in cancers because of Chernobyl (LNT never happened). What was the largest human health impact as a consequence of the accident/mistake? A. Mental health was the largest public health problem created by the accident B. Damaging psychological impacts occurred due to a lack of accurate information C. Birth defects D. Heart defects known as “Chernobyl Hearts” E. a and b F. none of the above A Positron Emission Tomography (PET) scan is useful in cancer diagnosis because? A. PET can detect structure of dense tissue B. It uses an external source of radiation to emit positrons (antimatter) C. It can measure oxygen levels inside tumours and help eliminate anoxic cells D. Combined with a CT scan, PET can radiosensitize tumours E. Cancer cells accumulate F-18FDG and metabolism can be measured in tumours F. b and c What would be the best way to detect thyroid cancer? A. DEXA Scan B. A CT scan combined with contrast agent C. Using an isotope of iodine D. Using a Radiendocrinator How many men will have recurrent prostate cancer within 5 years after their initial treatment? A. 50% B. 5% C. 25% D. 80%