PPT-Imaging with non-Ionising Radiation

Radiation Modifying sequence parameters to lower Specific Absorption Rate A patient with an active implant has been referred for an MRI scan  One of the MR Conditions for the implant is a WB SAR limit of 04 WKg  Can you describe options. What about ionising radiation sources that are not work- related? We are all exposed to natural background radiation from sources outside of work, such as: the earth itself; cosmic radiation from Uranium 238 (U238) Radioactive DecayHere we are concerned mainly with ionising radiation from the atomic nucleus. It occurs in two forms, rays and particles, at the high frequency end of the energy Io Learning Objectives. I must be able to recall when ionising radiation is emitted. . I should be able to describe the three types of ionising radiation.. I might be able to explain the dangers of ionising radiation.. Ionising radiation Radiation is all around us all day, every day. It sustains our lives. We see because our eyes detectradiation, whether from the sun or from a glowingfire, keeps us warm. We often co Ionising Radiation Protection and Nuclear Safety ActUnofficial translation1Prepared: 05.09.05 14:27I.GENERAL PROVISIONSArticle 1(purpose and content)(1) This Act shall regulate ionising radiation prot Week 3: X-Rays and CT Scans: Useful but Carcinogenic? + Monitoring Devices. Maryse. de la Giroday. 6-week course. SFU Liberal Arts & Adults 55+ program. FrogHeart.ca. Getting there & finding the slide decks & other materials. Continued. Minimising Exposure. As any exposure to ionising radiation could potentially damage cells and lead to cancer, . w. hen handling radioactive materials and in situations where workers are exposed to ionising radiation the ALARA principle should be employed.. By Daphne . Laino. and Danielle Roy. The Physics of Radiography. Two basic types of x-ray imaging modalities: projection radiography and computed tomography. Neither modality involves radiation. X-Rays. The Discovery of Radioactivity. Henri Becquerel (1896): . Investigated the effect . of sunlight on crystals of . uranium salts. . By chance he left sample . . resting on a . photographic plate wrapped . Strategies for Reducing Radiation Exposure with PET Insert presenter information here “In addition to cardiac PET having improved diagnostic utility compared with SPECT imaging, patient radiation exposure is significantly less with most PET perfusion radiotracers.” Lecturer Radiology INU. What is radiology?. Radiology is a branch of medicine that uses imaging technology to diagnose and treat disease.. Radiology may be divided into two different areas, diagnostic radiology and interventional radiology. Doctors who specialize in radiology are called radiologists.. 231 Vol. 25, No. 5: 231–242 Contamination of food with microorganisms, particularly pathogenic non-sporeforming bacteria, is one of the most significant public health prob - lems and an importa Exposure. Dr David J Heslop. Radiation Hazards. Non-ionising:. Electromagnetic spectrum. Ionising:. Alpha. Beta. Gamma. Neutron. X-radiation. Routes of Exposure. Direct exposure (line of sight). Secondary exposure:. At the end of this lecture the students should be able to understand:. • The advantages of good working . relationships and . close collaboration with the . imaging department . in planning appropriate .