positron emission tomography; PET
Medical imaging technique; often abbreviated as PET in both English and Japanese.
Positron emission tomography is used for cancer diagnosis.
The doctor explained the results of the PET scan.
From English 'positron' (ポジトロン) + 断層 (fault, cross-section) + 法 (method). The term is a direct translation of 'positron emission tomography'.