This can be in the form of radiation that penetrates from outside the body, or radioactive particles that are swallowed or inserted into the body. Imaging tests Certain types of imaging tests, such as x- rays, CT scans, and nuclear medicine tests (such as PET scans and bone scans) expose people to low levels of radiation in order to create internal pictures of the body. For example, the exposure from a 2- view chest x- ray is about 0. Sv, while exposure from a regular chest CT is about 7 or 8 m. Sv. The exposure from a PET/CT scan (which combines a PET scan of the body with a CT scan) can be as high as 3. Sv. Fluoroscopy, which uses x- rays to make real- time moving images, is like getting many x- rays in a row.
It exposes people to different amounts of radiation depending on how long it is used. The amount of radiation used in many imaging tests has gone down over time as technology has improved. In children: Radiation exposure also varies based on the test. Unless the settings on the scanner are adjusted for body size, exposure levels can be higher than they would be for an adult. For example, one study found that an abdominal CT may expose an adult’s stomach to about 1. Sv, while a newborn baby’s stomach would be exposed to 2. Sv by getting the same test without the settings adjusted.
Medical Physics Graduate Education; Medical.
For children, exposure to radiation from imaging tests is of particular concern, because: Children are much more sensitive to radiation than adults Children are expected to live longer than adults, so they have a longer time to develop problems from radiation exposure With tests like CT scans, children might receive a higher radiation dose than necessary if the CT settings are not adjusted for their smaller body size. These factors mean that for a young child, the risk of developing a radiation- related cancer could be several times higher than for an adult exposed to the same imaging test.
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The risks from these tests are not known for sure, but to be safe, most doctors recommend that children only get these tests when they are absolutely needed. When such tests are done, it is important to use the minimum amount of radiation needed to get the image. During radiation therapy, high doses of ionizing radiation (much higher than those used for imaging tests) are directed at the cancer, resulting in the death of the cancer cells.
However, this can lead to DNA mutations in other cells that survive the radiation, which may eventually lead to the development of a second cancer. Radiation therapy is also sometimes used to treat serious medical conditions besides cancer.
For more information about cancer risks from radiation therapy for cancer, see Second Cancers in Adults.
Medical physics (also called biomedical physics, medical biophysics or applied physics in medicine) is, generally speaking, the application of physics concepts, theories and methods to medicine or healthcare. This Medical Radiation Sciences program has been granted a 6 year accreditation status by the Canadian Medical Association (CMA). Visit Canadian Medical Association (opens new window). View the Exceptions Calendar for start. When studying the Bachelor of Science (Medical Radiation Science), you can choose to major in medical imaging or radiation therapy. Medical radiation science students take part in a mostly common first year irrespective of. Approved Programs of Study. Accreditation functions; Accreditation authorities; Accreditation standards. Bachelor of Medical Radiation Science (Nulcear medicine) (with and without honours) – 4 years. The Unit offers an M.Sc. Our graduate programs are accredited by CAMPEP (Commission for Accreditation of Medical Physics Education Programs). Medical physicists must go through CAMPEP training.
Radiation Programs at Ontario Colleges What to expect from a career as a Medical Radiation Technologist or Radiation Therapist. Radiation technologists and radiation therapists work as part of a large and highly important. Program Summary University McMaster University Degree Bachelor of Medical Radiation Science, BMRSc OUAC Program Code MRS Grade Range 85-88% Experiential Learning Practicum or internship option available Enrollment 140.