Which head is used primarily in SPECT?

Which head is used primarily in SPECT?

• A. Single
• B. Triple
• C. Dual
• D. Quadruple

Answer: (B)

SPECT relies on collecting projection data from many angles around the patient to reconstruct a 3D image. A single gamma camera head would require longer rotations and more time to gather sufficient counts, which can lead to longer scans and increased motion artifacts. Using multiple heads increases angular coverage and the number of detected photons per rotation, improving sensitivity and speeding up acquisition. A triple-head arrangement provides more angles and better statistics than a single head, making it a common configuration for efficient SPECT imaging. Today, dual-head systems are also common, but the traditional approach associated with SPECT’s tomographic data collection is the triple-head setup.

SPECT relies on collecting projection data from many angles around the patient to reconstruct a 3D image. A single gamma camera head would require longer rotations and more time to gather sufficient counts, which can lead to longer scans and increased motion artifacts. Using multiple heads increases angular coverage and the number of detected photons per rotation, improving sensitivity and speeding up acquisition. A triple-head arrangement provides more angles and better statistics than a single head, making it a common configuration for efficient SPECT imaging. Today, dual-head systems are also common, but the traditional approach associated with SPECT’s tomographic data collection is the triple-head setup.