Positron Emission Tomography (PET CT)

The Nirali Cancer Hospital is equipped with a state-of-the-art Siemens Biograph Horizen 16 slice PET-CT machine with a 3 ring LSO crystal (TOF capable) detector which has 22cm per bed coverage. This means a single Whole-Body PET-CT scan takes around 10-12 minutes.

The department performs PET-CT scans with F-18 FDG (Fluorodeoxyglucose), F-18 PSMA (Prostate Specific Membrane Antigen) as prescribed by the referring physicians. As part of its expansion plan for the upcoming Nirali Multi-specialty Hospital, the department intends to perform PET-CT imaging with a few other radiotracers like F-18 FDOPA and Ga-68 DOTA SSA (Somatostatin Analogs).


Positron Emission Tomography (PET-CT) is a type of hybrid nuclear medicine imaging technique, which uses small amounts of radioactive material called radiotracers or radiopharmaceuticals to help diagnose and assess medical conditions.

The most common radiotracer is F-18 FDG (Fluorodeoxyglucose), a molecule similar to glucose which is injected intravenously after adequate predefined patient preparation through an intravenous catheter placed before starting the procedure.

Similar to F-18 FDG, there are various other radiotracers which can be used for PET-CT scan. These include: F-18 NaF (Sodium Flouride), F-18 FLT (Fluorothymidine), F-18 FET (Fluoro Ethyl Tyrosine), F-18 PSMA (Prostate Specific Membrane Antigen) , F-18 DOPA (Dihydroxyphenylalanine), Ga-68 PSMA (Prostate Specific Membrane Antigen), Ga-68 DOTA SSA (Somatostatin Analogs), G-68 FAPI (Fibroblast Activation Protein), Rb- 82 (Rubidium chloride).

The selection of the radiotracer depends on the medical condition to be imaged, as predetermined by national and international guidelines.

Common Applications of PET- CT: