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PET & CT in GI Tumors: Where Do We Stand and Where Do We Go from Here

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Dr Sudeep Shah, Mumbai    05 December 2018

  • Positron emission tomography (PET) scan exposes an individual to 25 mSv, which is equivalent to 8 years of background radiation; while that from CT abdomen pelvis is 10 mSv and chest X-ray is 0.1 mSv.
  • MR-PET scan provides satisfactory results on brain imaging and confers lower radiation intensity.
  • However, MR-PET scan does not facilitate an easy calculation of attenuation effect and involves a very high cost of nearly 50 crores.
  • Irrational use of PET scan should be discontinued.
  • Other agents for imaging of the gastrointestinal tract include FDG (F-18 fluorodeoxyglucose) and Dotatate.

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