Why in PET SCAN only glucose is used

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Asked for Male, 43 Years

HELLO DOCTOR, Why only glucose is used to identify the cancer in PET SCAN. Does it mean that cancer cells live on glucose.And not on any energy souces like ketones and protiens.

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Dr. Shubham Jain Surgical Oncologist 19 yrs exp Delhi · Accepted Answer

Dr. Shubham Jain

Surgical Oncologist 19 yrs exp Delhi

Cancer cells like many other cells preferentially use glucose for their energy, because they need it's byproducts for cell division as well. This is known as Warburg effect, and is the basis for its use in PET CT. But even ketones and proteins in diet are converted to glucose in body, if need for energy arises

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