Analytical Compensation for Spatially Variant Detector Response in SPECT With Varying Focal-Length Fan-Beam Collimators

T. Li; J. Wen; Z. Liang

doi:10.1109/TNS.2003.812440

Analytical Compensation for Spatially Variant Detector Response in SPECT With Varying Focal-Length Fan-Beam Collimators

T. Li, J. Wen, Z. Liang

Stony Brook University

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

-The authors present a new method to compensate for the spatially variant detector response in single photon emission computed tomography (SPECT) with varying focal-length fan-beam (VFF) geometry. In this method, the deblurred projection is explicitly expressed as an integral of the collimator blurred data and the fully calibrated system kernel matrix with certain transforms. It needs a little more computation time than the conventional filtering techniques but provides much more accurate compensation. This method also represents a unified framework for detector response compensation in parallel-hole fan-beam and VFF SPECT with a circular scan orbit.

Original language	English
Pages (from-to)	398-404
Number of pages	7
Journal	IEEE Transactions on Nuclear Science
Volume	50
Issue number	3
DOIs	https://doi.org/10.1109/TNS.2003.812440
Publication status	Published - Jun 2003
Externally published	Yes

Keywords

SPECT
Spatially variant detector response
VFF
collimators

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10.1109/TNS.2003.812440

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abstract = "-The authors present a new method to compensate for the spatially variant detector response in single photon emission computed tomography (SPECT) with varying focal-length fan-beam (VFF) geometry. In this method, the deblurred projection is explicitly expressed as an integral of the collimator blurred data and the fully calibrated system kernel matrix with certain transforms. It needs a little more computation time than the conventional filtering techniques but provides much more accurate compensation. This method also represents a unified framework for detector response compensation in parallel-hole fan-beam and VFF SPECT with a circular scan orbit.",

keywords = "SPECT, Spatially variant detector response, VFF, collimators",

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AU - Wen, J.

AU - Liang, Z.

PY - 2003/6

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N2 - -The authors present a new method to compensate for the spatially variant detector response in single photon emission computed tomography (SPECT) with varying focal-length fan-beam (VFF) geometry. In this method, the deblurred projection is explicitly expressed as an integral of the collimator blurred data and the fully calibrated system kernel matrix with certain transforms. It needs a little more computation time than the conventional filtering techniques but provides much more accurate compensation. This method also represents a unified framework for detector response compensation in parallel-hole fan-beam and VFF SPECT with a circular scan orbit.

AB - -The authors present a new method to compensate for the spatially variant detector response in single photon emission computed tomography (SPECT) with varying focal-length fan-beam (VFF) geometry. In this method, the deblurred projection is explicitly expressed as an integral of the collimator blurred data and the fully calibrated system kernel matrix with certain transforms. It needs a little more computation time than the conventional filtering techniques but provides much more accurate compensation. This method also represents a unified framework for detector response compensation in parallel-hole fan-beam and VFF SPECT with a circular scan orbit.

KW - SPECT

KW - Spatially variant detector response

KW - VFF

KW - collimators

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JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

IS - 3

ER -

Analytical Compensation for Spatially Variant Detector Response in SPECT With Varying Focal-Length Fan-Beam Collimators

Abstract

Keywords

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