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. 2004 Jun;51(3):631-635.
doi: 10.1109/TNS.2004.830975.

FastSPECT II: A Second-Generation High-Resolution Dynamic SPECT Imager

Lars R Furenlid  1 , Donald W Wilson, Yi-Chun Chen, Hyunki Kim, Philip J Pietraski, Michael J Crawford, Harrison H Barrett
Affiliations

FastSPECT II: A Second-Generation High-Resolution Dynamic SPECT Imager

Lars R Furenlid et al. IEEE Trans Nucl Sci. 2004 Jun.

Abstract

FastSPECT II is a recently commissioned 16-camera small-animal SPECT imager built with modular scintillation cameras and list-mode data-acquisition electronics. The instrument is housed in a lead-shielded enclosure and has exchangeable aperture assemblies and adjustable camera positions for selection of magnification, pinhole size, and field of view. The calibration of individual cameras and measurement of an overall system imaging matrix (1 mm(3) voxels) are supported via a five-axis motion-control system.Details of the system integration and results of characterization and performance measurements are presented along with first tomographic images. The dynamic imaging capabilities of the instrument are explored and discussed.

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Figures

Fig. 1
Fig. 1
Assembly drawing and photograph of FastSPECT II 3 × 3 modular gamma-ray camera.
Fig. 2
Fig. 2
The list-mode data-acquisition components for a single FastSPECT II modular gamma-ray camera.
Fig. 3
Fig. 3
Photographs of FastSPECT II (a) prior to installation of shielding and (b) in finished condition together with calibration and positioning stage.
Fig. 4
Fig. 4
Measured mean response of the center PMT as a well collimated source is scanned across the face of one of the FSII cameras.
Fig. 5
Fig. 5
Measured MDRF for the three PMTs immediately underneath a horizontal scan of a FASTSPECT II modular gamma-ray camera close to the mid-line.
Fig. 6
Fig. 6
Phantom employed for first tomographic images along with a coin for scale. Total activity was ~1 mCi.
Fig. 7
Fig. 7
Tomographic slices of the phantom shown in Fig. 6. Each slice is 1 mm thick, and has lateral dimensions of 20 mm × 20 mm. Two spheres are at top edge of calibration volume.
See this image and copyright information in PMC

References

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