New prostate cancer scan identified 91% of cases in study, potentially avoiding biopsies

WASHINGTON — A new study by the Medical University of Vienna found that a specialized form of imaging could identify 91% of prostate cancer cases without the need for a biopsy.

Traditionally, a blood test can indicate the possibility of prostate cancer, but a diagnosis has long depended on a tissue sample through an outpatient procedure.

The imaging technique starts with a positron emission tomography (PET) scan using a small amount of a radioactive substance that binds to a tissue abu...