A gamma camera can be single head, dual head (most common) or triple head.

A gamma camera can be single head, dual head (most common) or triple head.

• A. Gamma camera
• B. PET scanner
• C. CT scanner
• D. MRI scanner

Answer: (A)

Gamma cameras image gamma rays emitted by radiopharmaceuticals. They can be a single detector, but are often built with two detectors (dual-head, which is most common) or three detectors (triple-head). Adding more detectors increases the amount of gamma photons collected from different angles, boosting sensitivity and allowing faster imaging or better resolution, which is especially useful for SPECT-type studies. Other modalities have different detector geometries: PET uses a ring of detectors to catch pairs of annihilation photons, CT uses X-ray detectors around a rotating X-ray source, and MRI relies on magnetic fields and RF coils rather than gamma-ray detectors. So the description of single-, dual-, or triple-head configurations specifically matches a gamma camera.

Gamma cameras image gamma rays emitted by radiopharmaceuticals. They can be a single detector, but are often built with two detectors (dual-head, which is most common) or three detectors (triple-head). Adding more detectors increases the amount of gamma photons collected from different angles, boosting sensitivity and allowing faster imaging or better resolution, which is especially useful for SPECT-type studies. Other modalities have different detector geometries: PET uses a ring of detectors to catch pairs of annihilation photons, CT uses X-ray detectors around a rotating X-ray source, and MRI relies on magnetic fields and RF coils rather than gamma-ray detectors. So the description of single-, dual-, or triple-head configurations specifically matches a gamma camera.