Ultra-high-resolution SPECT with CdTe for small-animal imaging applications: A Monte Carlo simulation study using a voxelized phantom

Park, Su Jin; Lee, Chang-Lae; Cho, Hyo-Min; Kim, Hee-Joung

doi:10.3938/jkps.60.1145

Cited by 9 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Cadmium Telluride Detectormentioning

confidence: 99%

“…[17] These detectors, in comparison with the scintillators, have a lower carrier creation energy and low scatter count. [7,21] Unfortunately, Si with a low stopping power for high-energy photons is restricted to low-energy photons. Besides, Ge works at cryogenic temperatures because of its small band gap.…”

Section: Semiconductor Detectorsmentioning

confidence: 99%

“…The spatial resolution of the detectors was found 2.27 mm and 3.21 mm FWHM, respectively. [7] Meanwhile, a thickness of 5 mm was needed for CdTe to stopping power of 75% with 99m Tc at 140 KeV. [13] Jambi et al have studied the function of the XRI-UNO CdTe detectors and found that the XRI-UNO had acceptable performance for energies lower than 30 KeV, and partly thin CdTe layer could not be proper for imaging with energetic radionuclides.…”

Section: Cadmium Telluride Detectormentioning

confidence: 99%

“…[1,2,6] Many studies have been done for improvement of SPECT devices and the image quality. [7,8] Detector plays a critical role in the quality of the created images in the medical imaging system. Furthermore, it is responsible for absorbing and detecting the high-energy photons emitted from the patient and also providing the location of the photon interaction for the photomultiplier tube (PMT) circuit.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Section: Cadmium Telluride Detectormentioning

confidence: 99%

Section: Semiconductor Detectorsmentioning

confidence: 99%

Section: Cadmium Telluride Detectormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

2017

View full text Add to dashboard Cite

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].…”

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

Medical Applications of II-VI Semiconductor-Based Radiation Detectors

Vatavu¹

2023

Handbook of II-VI Semiconductor-Based Sensors and Radiation Detectors

View full text Add to dashboard Cite

Ultra-high-resolution SPECT with CdTe for small-animal imaging applications: A Monte Carlo simulation study using a voxelized phantom

Cited by 9 publications

References 10 publications

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

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

Medical Applications of II-VI Semiconductor-Based Radiation Detectors

Contact Info

Product

Resources

About