Work

Development of a cost-effective modular pixelated NaI(Tl) detector for clinical SPECT applications

Year: 2012

Type: article

Abstract: NaI(Tl) pixels and decoded by an array of 51 mm diameter single-anode PMTs. Several configurations, utilizing two types of PMTs, were evaluated using a collimated beam source to measure positioning accuracy directly. Good pixel separation was observed, with correct pixel identification ranging from 60 to 72% averaged over the entire area of the modules, depending on the PMT type and configuration. This translates to a significant improvement in positioning accuracy compared to continuous slab detectors of the same thickness, along with effective reduction of "dead" space at the edges. The observed 10% average energy resolution compares well to continuous slab detectors. The combined performance demonstrates the suitability of pixelated detectors decoded with a relatively small number of medium-sized PMTs as a cost-effective approach for high resolution clinical SPECT applications, in particular those involving curved detector geometries.

Source: IEEE Transactions on Nuclear Science

DOI: 10.1109/tns.2012.2210908

Authors: Mike Rozler, Haoning Liang, Hamid Sabet, Wei Chang

Institutions: Rush University Medical Center, Rush University

Language: English

Topic: Radiation Detection and Scintillator Technologies

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: University of Pennsylvania, National Heart, Lung, and Blood Institute

Award: Development of High Performance Cardiac SPECT/CT Imaging