Originally, Gamma Cameras as ____________ head systems

Originally, Gamma Cameras as ____________ head systems

• A. Single-detector
• B. Dual-detector
• C. Triple-head
• D. Quad-detector

Answer: (A)

Gamma cameras were originally built as a single-detector head system. The first practical nuclear medicine cameras used one detector assembly—a single NaI(Tl) crystal paired with a position-sensitive readout—to detect gamma photons and determine where they originated in the crystal. This simple, compact design produced planar images and kept the hardware straightforward and affordable. As imaging needs evolved, designers added more detector heads around the patient to boost sensitivity and enable faster imaging or tomographic techniques like SPECT, leading to dual-head, triple-head, and quad-head configurations. So, the original gamma cameras were single-head devices, which is why that option fits the history and the basic design concept.

Gamma cameras were originally built as a single-detector head system. The first practical nuclear medicine cameras used one detector assembly—a single NaI(Tl) crystal paired with a position-sensitive readout—to detect gamma photons and determine where they originated in the crystal. This simple, compact design produced planar images and kept the hardware straightforward and affordable. As imaging needs evolved, designers added more detector heads around the patient to boost sensitivity and enable faster imaging or tomographic techniques like SPECT, leading to dual-head, triple-head, and quad-head configurations. So, the original gamma cameras were single-head devices, which is why that option fits the history and the basic design concept.