search:ct scanning a major source of radiation exposure相關網頁資料

- en.wikipedia.org
  
  X-ray computed tomography - Wikipedia, the free encyclopedia
  
  X-ray computed tomography (x-ray CT) is a technology that uses computer-processed x-rays to produce tomographic images (virtual 'slices') of specific areas of the scanned object, allowing the user to see what is inside it without cutting it open. Digital
  
  2024-07-08
  
  瀏覽：327
- www.google.com.tw
  
  Patient Safety - Radiation Dose in X-Ray and CT Exams
  
  The scientific unit of measurement for radiation dose, commonly referred to as ... Computed Tomography (CT)-Chest Low Dose, 1.5 mSv, 6 months, Very Low.
  
  2024-07-13
  
  瀏覽：949

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X-ray computed tomography - Wikipedia, the free encyclopedia

日期：2024-07-14

[edit]. The first commercially viable CT scanner was invented by Sir Godfrey Hounsfield in Hayes, United Kingdom, at EMI ......

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Ionizing radiation - Wikipedia, the free encyclopedia

日期：2024-07-11

Ionizing (or ionising (British English)) radiation is radiation that carries enough energy to liberate electrons from atoms or molecules, thereby ionizing them. Ionizing radiation is composed of energetic subatomic particles, ions or atoms moving at relat...

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Computed Tomography — An Increasing Source of Radiation Exposure — NEJM

日期：2024-07-09

Review Article from The New England Journal of Medicine — Computed Tomography — An Increasing Source of Radiation Exposure ... Quantitative Measures Various measures are used to describe the radiation dose delivered by CT scanning, the most relevant ......

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Radiation exposure from CT scans in childhood and subsequent risk of leukaemia and brain tumours: a

日期：2024-07-13

Radiation exposure from CT scans in childhood and subsequent risk of leukaemia and brain tumours: a retrospective cohort study Dr Mark S Pearce, PhD a, , , Jane A Salotti, PhD a, Mark P Little, PhD c, Kieran McHugh, FRCR d, Choonsik Lee, PhD c, Kwang Pyo ...

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Radiation exposure from CT scans in childhood and subsequent risk of leukaemia and brain tumours: a

日期：2024-07-11

Background Although CT scans are very useful clinically, potential cancer risks exist from associated ionising radiation, in particular for children who are more radiosensitive than adults. We aimed to assess the excess risk of leukaemia and brain tumours...

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Computed Tomography (CT) - U S Food and Drug Administration Home Page

日期：2024-07-13

Information for Health Care Providers The FDA has regulations covering the safety and effectiveness and radiation control of all X-ray imaging devices, including CT. Individual states and other federal agencies regulate the use of CT devices through recom...

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» CT Scans Can Expose The Body To Radiation Levels More Than 1000 Times Greater Than a Standard X-Ra

日期：2024-07-10

CT Scans Can Expose The Body To Radiation Levels More Than 1000 Times Greater Than a Standard X-Ray Doctors argue amount of radiation emitted from regular medical X-rays ... CT (computed tomography) scans are now a well established medical imaging ......

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Computed Tomography (CT) Scans and Cancer Fact Sheet - National Cancer Institute

日期：2024-07-12

Selected References American College of Radiology and Radiological Society of North America (April 2012). Patient Safety: Radiation Dose in X-Ray and CT Exams. Retrieved July 19, 2013. U.S. Food and Drug Administration (August 2009). What are the Radiatio...

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