Fanbeam Collimators

Fanbeam collimators for brain and cardiac SPECT imaging. Transaxial focusing improves resolution and sensitivity. Optimized for neurological and cardiac nuclear medicine applications.

Fanbeam collimators combine the benefits of converging geometry with practical whole-organ coverage, providing improved resolution and sensitivity for brain, cardiac, and other organ-specific SPECT imaging. Nuclear Shields manufactures fanbeam collimators optimized for clinical neurological and cardiac applications.

Hybrid geometry for practical imaging

The fanbeam collimator represents a hybrid between fully converging (cone-beam) and parallel hole designs. Holes converge toward a focal line in the transaxial plane while remaining parallel in the axial direction. This creates a “fan” of acceptance angles across the width of the detector while maintaining uniform coverage along its length. This geometry provides the resolution and sensitivity advantages of converging collimation in the critical transaxial imaging plane, where spatial resolution most directly affects diagnostic quality, while avoiding the truncation and limited axial coverage problems of full cone-beam designs.