Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study
Introduction: In yttrium-90 imaging, image quality is highly dependent on the selection of energy window and collimator design becausetheY-90 bremsstrahlung photons have a continuous and broad energy distribution. The current study aimed to optimize the bremsstrahlung energy window setting and colli...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Mashhad University of Medical Sciences
2021-07-01
|
| Series: | Iranian Journal of Medical Physics |
| Subjects: | |
| Online Access: | https://ijmp.mums.ac.ir/article_15338_d498a314d088ce12cc4685a54f10d75f.pdf |
| _version_ | 1818656442129842176 |
|---|---|
| author | Hicham Asmi Farida Bentayeb Youssef Bouzekraoui Faustino Bonutti sanae douama |
| author_facet | Hicham Asmi Farida Bentayeb Youssef Bouzekraoui Faustino Bonutti sanae douama |
| author_sort | Hicham Asmi |
| collection | DOAJ |
| description | Introduction: In yttrium-90 imaging, image quality is highly dependent on the selection of energy window and collimator design becausetheY-90 bremsstrahlung photons have a continuous and broad energy distribution. The current study aimed to optimize the bremsstrahlung energy window setting and collimator for the improvement of both resolution and sensitivity. Material and Methods: In the present study, simulation of medical imaging nuclear detectors (SIMIND) Monte Carlo program was used to simulate Siemens Medical System Symbia. The SIMIND was utilized to generate the Y-90 bremsstrahlung single-photon emission computed tomography (SPECT) projection of the point source. Six energy windows settings and two collimators denoting medium energy and high energy were used in order to assess the effect of the energy window on the resolution. Results: The experimental measurements and simulation results showed a similar pattern in the point spread functions with the energy window. The simulation data indicated that the geometric component reached 73%for the energy window within the range of51-120keVusingthe high-energy (HE) collimator. In addition, the obtained results showed that the full width at half maximum (FWHM) and full width at tenth maximum (FWTM)(FWHM=7mm and FWTM=35mm)were higher in this window in comparison to those reported for other windows. Conclusion: According to the obtained results of the present study, the optimal energy window for Y-90 bremsstrahlung SPECT imaging was within the range of 51-120 keV. The obtained optimal energy window and optimal HE collimator had the potential to improve the image resolution and sensitivity of Y-90 SPECT images |
| first_indexed | 2024-12-17T03:25:39Z |
| format | Article |
| id | doaj.art-dda5cbc9d9af48f1be848d1ec79f7d1c |
| institution | Directory Open Access Journal |
| issn | 2345-3672 2345-3672 |
| language | English |
| last_indexed | 2024-12-17T03:25:39Z |
| publishDate | 2021-07-01 |
| publisher | Mashhad University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Medical Physics |
| spelling | doaj.art-dda5cbc9d9af48f1be848d1ec79f7d1c2022-12-21T22:05:24ZengMashhad University of Medical SciencesIranian Journal of Medical Physics2345-36722345-36722021-07-0118426326910.22038/ijmp.2020.44763.169115338Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation StudyHicham Asmi0Farida Bentayeb1Youssef Bouzekraoui2Faustino Bonutti3sanae douama4Department of Physics, LPHE, Modeling and Simulations, Faculty of Science, Mohammed V University, Rabat, MoroccoDepartment of Physics,LPHE, Modeling and Simulations, Faculty of Science, Mohammed V University, Rabat, MoroccoDepartment of Physics,LPHE, Modeling and Simulations, Faculty of Science, Mohammed V University, Rabat, MoroccoAcademic Hospital of Udine, Department of Medical Physics, Udine, ItalyDepartment of Physics,LPHE, Modeling and Simulations, Faculty of Science,Mohammed V University, Rabat, MoroccoIntroduction: In yttrium-90 imaging, image quality is highly dependent on the selection of energy window and collimator design becausetheY-90 bremsstrahlung photons have a continuous and broad energy distribution. The current study aimed to optimize the bremsstrahlung energy window setting and collimator for the improvement of both resolution and sensitivity. Material and Methods: In the present study, simulation of medical imaging nuclear detectors (SIMIND) Monte Carlo program was used to simulate Siemens Medical System Symbia. The SIMIND was utilized to generate the Y-90 bremsstrahlung single-photon emission computed tomography (SPECT) projection of the point source. Six energy windows settings and two collimators denoting medium energy and high energy were used in order to assess the effect of the energy window on the resolution. Results: The experimental measurements and simulation results showed a similar pattern in the point spread functions with the energy window. The simulation data indicated that the geometric component reached 73%for the energy window within the range of51-120keVusingthe high-energy (HE) collimator. In addition, the obtained results showed that the full width at half maximum (FWHM) and full width at tenth maximum (FWTM)(FWHM=7mm and FWTM=35mm)were higher in this window in comparison to those reported for other windows. Conclusion: According to the obtained results of the present study, the optimal energy window for Y-90 bremsstrahlung SPECT imaging was within the range of 51-120 keV. The obtained optimal energy window and optimal HE collimator had the potential to improve the image resolution and sensitivity of Y-90 SPECT imageshttps://ijmp.mums.ac.ir/article_15338_d498a314d088ce12cc4685a54f10d75f.pdfy90 spect imaging monte carlo |
| spellingShingle | Hicham Asmi Farida Bentayeb Youssef Bouzekraoui Faustino Bonutti sanae douama Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study Iranian Journal of Medical Physics y 90 spect imaging monte carlo |
| title | Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study |
| title_full | Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study |
| title_fullStr | Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study |
| title_full_unstemmed | Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study |
| title_short | Optimization of Energy Window and Collimator for Y-90 Bremsstrahlung SPECT imaging: A Monte Carlo Simulation Study |
| title_sort | optimization of energy window and collimator for y 90 bremsstrahlung spect imaging a monte carlo simulation study |
| topic | y 90 spect imaging monte carlo |
| url | https://ijmp.mums.ac.ir/article_15338_d498a314d088ce12cc4685a54f10d75f.pdf |
| work_keys_str_mv | AT hichamasmi optimizationofenergywindowandcollimatorfory90bremsstrahlungspectimagingamontecarlosimulationstudy AT faridabentayeb optimizationofenergywindowandcollimatorfory90bremsstrahlungspectimagingamontecarlosimulationstudy AT youssefbouzekraoui optimizationofenergywindowandcollimatorfory90bremsstrahlungspectimagingamontecarlosimulationstudy AT faustinobonutti optimizationofenergywindowandcollimatorfory90bremsstrahlungspectimagingamontecarlosimulationstudy AT sanaedouama optimizationofenergywindowandcollimatorfory90bremsstrahlungspectimagingamontecarlosimulationstudy |