A SIMIND Monte Carlo Simulation Study on CdTe and NaI (Tl) Thickness as Detectors of a Small Animal SPECT System

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Abbaspour Samira; MAHMOUDIAN BABAK; ZAKAVI SEYED RASOUL; PIRAYESH ISLAMIAN JALIL

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Journal: Frontiers in Biomedical Technologies Year:2022 | Volume:9 | Issue:4 Page(s): 307-315

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Title

A SIMIND Monte Carlo Simulation Study on CdTe and NaI (Tl) Thickness as Detectors of a Small Animal SPECT System

Author(s)

Abbaspour Samira | MAHMOUDIAN BABAK | ZAKAVI SEYED RASOUL | PIRAYESH ISLAMIAN JALIL | Issue Writer Certificate

Keywords

Cadmium Telluride

Resolution

Image Quality

Micro Single Photon Emission Computed Tomography

Simulating Medical Imaging Nuclear Detectors Monte Carlo

Abstract

Purpose: Micro Single Photon Emission Computed Tomography (Micro-SPECT) system has recently been introduced on nuclear medicine in the preclinical and research in which NaI (Tl) and Cadmium Telluride (CdTe) are used as the gamma-ray detectors with more generally use of NaI (Tl). The present study aimed to evaluate different thicknesses of the NaI (Tl) and (CdTe) detectors on functional parameters of a micro-SPECT system. Materials and Methods: A Micro-SPECT system with CdTe semiconductor detector and a hexagonal parallel hole collimator with a hole diameter of 0. 11 mm, high of 24. 05 mm, and septal thickness of 0. 016 mm was simulated by Simulating Medical Imaging Nuclear Detectors (SIMIND) Monte Carlo program. The system performance was assessed by comparing the functional parameters, including system efficiency, sensitivity, energy and spatial Resolution with the NaI (Tl) detector. The simulated scans of a 99mTc point source, a digital micro-Jacszack phantom, and a voxelized MOBY mouse phantom with the system were prepared to evaluate Image Quality. Results: The functional parameters,sensitivity, efficiency, planar spatial Resolution, and image contrast of CdTe detector were determined 1. 4, 1. 2, 1. 7, and 1. 8 times higher than those of NaI (Tl), respectively. Moreover, the calculated energy Resolution of CdTe and NaI (Tl) detectors was obtained 6. 2% and 10. 2% at 141 KeV, respectively. In the filtered back projection (FBP) reconstructed images of the micro-Jacszack phantom, minimum detectable size of the cold rods with CdTe and NaI (Tl) detectors were obtained 0. 79 mm and 0. 95 mm, respectively. Conclusion: The imaging system with a 5. 5 mm thickness CdTe detector provided better Image Quality and showed considerable efficiency.

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APA: Copy

Abbaspour, Samira, MAHMOUDIAN, BABAK, ZAKAVI, SEYED RASOUL, & PIRAYESH ISLAMIAN, JALIL. (2022). A SIMIND Monte Carlo Simulation Study on CdTe and NaI (Tl) Thickness as Detectors of a Small Animal SPECT System. FRONTIERS IN BIOMEDICAL TECHNOLOGIES, 9(4), 307-315. SID. https://sid.ir/paper/1135870/en

Vancouver: Copy

Abbaspour Samira, MAHMOUDIAN BABAK, ZAKAVI SEYED RASOUL, PIRAYESH ISLAMIAN JALIL. A SIMIND Monte Carlo Simulation Study on CdTe and NaI (Tl) Thickness as Detectors of a Small Animal SPECT System. FRONTIERS IN BIOMEDICAL TECHNOLOGIES[Internet]. 2022;9(4):307-315. Available from: https://sid.ir/paper/1135870/en

IEEE: Copy

Samira Abbaspour, BABAK MAHMOUDIAN, SEYED RASOUL ZAKAVI, and JALIL PIRAYESH ISLAMIAN, “A SIMIND Monte Carlo Simulation Study on CdTe and NaI (Tl) Thickness as Detectors of a Small Animal SPECT System,” FRONTIERS IN BIOMEDICAL TECHNOLOGIES, vol. 9, no. 4, pp. 307–315, 2022, [Online]. Available: https://sid.ir/paper/1135870/en

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