Designing position sensitive NaI(Tl) bar-detectors with an empirical model

Liu, Y.; Chang, Wei; Kari, B.

doi:10.1109/23.256702

Cited by 5 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The overall packing fraction is nominally 95% for the assembled cylinder. Each of the NaI(Tl) bars has the entrance and side surfaces transverse-sanded for control of the scintillation light spread [4]. The front entrance face of each module is appropriately curved to conform to the inner surface of a hollow cylinder.…”

Section: D[ Detector Module Designmentioning

confidence: 99%

A new modular detector for a cylindrical brain SPECT system

Chang

Liu

Kari

1994

IEEE Trans. Nucl. Sci.

Self Cite

View full text Add to dashboard Cite

A new detector module has been developed for a prototype system, McSPECT 11, which is being constructed for highresolution clinical brain imaging. The detector module is the building block of the cylindrical detector system of the McSPECT 11. Each detector module contains 5 NaI(Tl) bars and is backed by a glass window in an aluminum housing. Each detector module is associated with 6 PMTs to form a functional unit for position estimation. Bench-top tests performed on a sample unit demonstrated an average of 10.5% local energy resolution (ER) at 140 keV. Centroid calculations were applied in both orthogonal directions of the module for position estimation. In the longitudinal direction, a two-step centroid method yields a 1 3 cm UFOV (useful field-of-view) along the bar and an 11 cm CFOV (center FOV), with intrinsic spatial resolution of <5.5 and 3.8k0.3 mm F' WHM, respectively. In the transverse direction, the task of identifying the bar detector involved in an event is simplified, with an accuracy better than 99% when photons are incident normally.

show abstract

Section: D[ Detector Module Designmentioning

confidence: 99%