Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Hicham Asmi"'
Publikováno v:
Iranian Journal of Medical Physics, Vol 20, Iss 5, Pp 266-272 (2023)
Introduction: Patient repositioning in treatment radiotherapy is one of the main factors that increase error of target irradiation. However additional margin is necessary to consider the uncertainties created along and around X, Y and Z-axis.Material
Externí odkaz:
https://doaj.org/article/4e05f98dba844f93bff67e3d76b544d7
Publikováno v:
Iranian Journal of Medical Physics, Vol 19, Iss 1, Pp 43-48 (2022)
Introduction: In Yttrium-90 SPECT imaging, the energy window and collimator used during projection acquisition can significantly affect image quality. In this work, we used a new and independent method to verify previous results, which suggest suitab
Externí odkaz:
https://doaj.org/article/7ce91d37d4b14811ae69f941e6d780a6
Publikováno v:
Iranian Journal of Medical Physics, Vol 18, Iss 4, Pp 263-269 (2021)
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
Externí odkaz:
https://doaj.org/article/dda5cbc9d9af48f1be848d1ec79f7d1c
Publikováno v:
Iranian Journal of Medical Physics, Vol 16, Iss 6, Pp 405-409 (2019)
Introduction: In radionuclide imaging, object scatter is one of the major factors leading to image quality degradation. Therefore, the correction of scattered photons might have a great impact on improving the image quality. Regarding this, the prese
Externí odkaz:
https://doaj.org/article/7c27a2352d8d4760beb55f4f91461730
Autor:
Youssef Bouzekraoui, Hicham Asmi, Rachid Errifai, Sanae Douama, Farida Bentayeb, Faustino Bonutti, Mina Ouahman
Publikováno v:
Molecular Imaging and Radionuclide Therapy
Molecular Imaging and Radionuclide Therapy, Vol 29, Iss 3, Pp 118-123 (2020)
Molecular Imaging and Radionuclide Therapy, Vol 29, Iss 3, Pp 118-123 (2020)
Gallium-67 (Ga-67) imaging is affected by collimator penetration and scatter components owing to the high-energy (HE) gamma-ray emissions. The characterization of penetration and scatter distribution is essential for the optimization of low-energy hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0fc326e3158896a90a0ba52b8d3dc6e
https://doi.org/10.4274/mirt.galenos.2020.21549
https://doi.org/10.4274/mirt.galenos.2020.21549
Publikováno v:
Indian Journal of Nuclear Medicine : IJNM : The Official Journal of the Society of Nuclear Medicine, India
Introduction In lutetium-177 (Lu-177) single-photon emission computed tomography (SPECT) imaging, the accuracy of activity quantification is degraded by penetrated and scattered photons. We assessed the scattered photon fractions in order to determin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf782e44979801ca6fb0137417d850b0
http://europepmc.org/articles/PMC6958958
http://europepmc.org/articles/PMC6958958
Publikováno v:
Indian Journal of Nuclear Medicine : IJNM : The Official Journal of the Society of Nuclear Medicine, India
Introduction: The choice of the radionuclide has a key role in nuclear medicine which appearing the lowest scatter fraction. In addition, the presence of penetrated and scattered photons from collimator in single-photon emission computed tomography i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd1cda729b5d175fabbb6f5d7d27b585
https://pubmed.ncbi.nlm.nih.gov/31293298
https://pubmed.ncbi.nlm.nih.gov/31293298
Publikováno v:
Indian Journal of Nuclear Medicine : IJNM : The Official Journal of the Society of Nuclear Medicine, India
Purpose: In yttrium-90 (Y-90) single-photon emission computed tomography (SPECT) imaging, the choice of the acquisition energy window is not trivial, due to the continuous and broad energy distribution of the bremsstrahlung photons. In this work, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c723aed2255c7a247ab91cb602194b19
https://pubmed.ncbi.nlm.nih.gov/31040523
https://pubmed.ncbi.nlm.nih.gov/31040523
Publikováno v:
Indian Journal of Nuclear Medicine : IJNM : The Official Journal of the Society of Nuclear Medicine, India
Introduction: In iodine-131 (I-131) imaging, the image quality is degraded by scatter and penetration in a collimator. In this work, we assessed the penetrated and the scattered photon fractions in the photopeak energy window using Monte Carlo Simula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d936614f7a52565c5fd7aefe480c5e4
https://pubmed.ncbi.nlm.nih.gov/30713374
https://pubmed.ncbi.nlm.nih.gov/30713374
Publikováno v:
Indian Journal of Nuclear Medicine : IJNM : The Official Journal of the Society of Nuclear Medicine, India
Purpose: In single-photon emission computed tomography imaging, the presence of scatter degrades image quality. The goal of this study is to optimize the main- and sub-energy windows for triple-energy window (TEW) method using Monte Carlo SImulating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5986e35c51ca5621f4bdf8fddbccee0f
https://doi.org/10.4103/ijnm.ijnm_11_20
https://doi.org/10.4103/ijnm.ijnm_11_20