Comparison of a pixelated semiconductor detector and a non-pixelated scintillation detector in pinhole SPECT system for small animal study

Iida, Hajimu; Ogawa, Kōichi

doi:10.1007/s12149-010-0441-3

Cited by 13 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tungsten density (g/cm 3 ) 19.30 Linear attenuation coefficient (cm À 1 ) 31.80 Acceptable septal thickness (mm) 0.065 Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

“…Currently, X-ray computed tomography (CT) systems can achieve a spatial resolution of several tens to hundreds of microns [3]; on the other hand, the spatial resolution of the conventional gamma camera system is generally low. One strategy to cope with spatial resolution issues is to utilize pixelated semiconductor detectors based on cadmium zinc telluride (CZT) or cadmium telluride (CdTe) [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance evaluation of a small CZT pixelated semiconductor gamma camera system with a newly designed stack-up parallel-hole collimator

Lee

Kim

2015

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

“…Tungsten density (g/cm 3 ) 19.30 Linear attenuation coefficient (cm À 1 ) 31.80 Acceptable septal thickness (mm) 0.065 Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a small CZT pixelated semiconductor gamma camera system with a newly designed stack-up parallel-hole collimator

Lee

Kim

2015

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

“…In addition, semiconductor detector eliminates the need for bulky PMTs and so provides a thin and lightweight camera head with decreased shielding so flexible to design the camera in different shapes; besides, SPECT imaging scanners with semiconductor detector can be built very compact due to direct photon conversion and have not PMTs. [1,10,13,16,18,26,27,29,30]…”

Section: Semiconductor Detectorsmentioning

confidence: 99%

Cadmium telluride semiconductor detector for improved spatial and energy resolution radioisotopic imaging

2017

View full text Add to dashboard Cite

The detector in single-photon emission computed tomography has played a key role in the quality of the images. Over the past few decades, developments in semiconductor detector technology provided an appropriate substitution for scintillation detectors in terms of high sensitivity, better energy resolution, and also high spatial resolution. One of the considered detectors is cadmium telluride (CdTe). The purpose of this paper is to review the CdTe semiconductor detector used in preclinical studies, small organ and small animal imaging, also research in nuclear medicine and other medical imaging modalities by a complete inspect on the material characteristics, irradiation principles, applications, and epitaxial growth method.

show abstract

“…where the event took place [12][13][14][15]. The intrinsic resolution of the detector is thus nearly equal to the pixel size because the carriers are collected individually for each pixel [16,17]. CZT-based SPECT has recently been introduced for clinical cardiac SPECT and breast SPECT [13,18].…”

Section: Jinst 10 P09016mentioning

confidence: 99%

Performance characterization of a new CZT-based preclinical SPECT system: a comparative study of different collimators

Yu¹,

Park²,

Choi³

et al. 2015

J. Inst.

View full text Add to dashboard Cite

Triumph X-SPECT is a newly released CZT-based preclinical small-animal SPECT system with interchangeable collimators. The purpose of this work was to evaluate and systematically compare the imaging performances of three different collimators in the CZT-based preclinical small-animal system: a single-pinhole collimator (SPH), a multi-pinhole collimator (MPH) and a parallel-hole collimator. We measured the spatial resolutions and sensitivities of the three collimators with 99m Tc sources, considering three distinct energy window widths (5, 10, and 20%), and used the NEMA NU4-2008 Image Quality phantom to test the imaging performance of the three collimators in terms of uniformity and spill-over ratio (SOR) for each energy window. With a 10% energy window width at a radius of rotation (ROR) of 30 mm, the system resolution of the SPH, MPH and parallel-hole collimators was 0.715, 0.855 and 3.270 mm FWHM, respectively. For the same energy window, the sensitivity of the system with SPH, MPH and parallel-hole collimators was 32.860, 152.514 and 49.205 counts/sec/MBq at a 100 mm source-to-detector distance and 6.790, 33.376 and 49.038 counts/sec/MBq at a 130 mm source-to-detector distance, respectively. The image noise and SOR air for the three collimators were 20.137, 12.278 and 11.232 (%STD unif ) and 0.106, 0.140 and 0.161, respectively. Overall, the results show that the SPH had better spatial

show abstract

Comparison of a pixelated semiconductor detector and a non-pixelated scintillation detector in pinhole SPECT system for small animal study

Abstract: The performance of a modular-type pixelated semiconductor detector was almost the same as that of a non-pixelated scintillation detector with a magnified data acquisition in a small animal pinhole SPECT system.

Cited by 13 publications

References 12 publications

Performance evaluation of a small CZT pixelated semiconductor gamma camera system with a newly designed stack-up parallel-hole collimator

Performance evaluation of a small CZT pixelated semiconductor gamma camera system with a newly designed stack-up parallel-hole collimator

Cadmium telluride semiconductor detector for improved spatial and energy resolution radioisotopic imaging

Performance characterization of a new CZT-based preclinical SPECT system: a comparative study of different collimators

Contact Info

Product

Resources

About