A Monte Carlo study of arms effect in myocardial perfusion of normal and abnormal cases utilizing STL heart shape

Banoqitah, Essam; Taha, Eslam; Elmoujarkach, Ezzat; Alsebaie, Sahar; Subahi, Ahmad F.; AlSharif, Shaza

doi:10.1016/j.rinp.2018.06.028

Cited by 5 publications

(6 citation statements)

References 7 publications

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“…The macro language makes GATE easier to use and requires no knowledge of C++. The current use of GATE is in the medical imaging fi eld (using both external and internal sources) [20,21], dosimetry [22][23][24], radiotherapy (using photons and charged particles), and the newly added feature of optical imaging.…”

Section: Evolution Of Gatementioning

confidence: 99%

A virtual laboratory for radiotracer and sealed-source applications in industry

et al. 2021

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Radioactive sealed sources and radiotracer techniques are used to diagnose industrial process units. This work introduces a workspace to simulate four sealed sources and radiotracer applications, namely, gamma scanning of distillation columns, gamma scanning of pipes, gamma transmission tomography, and radiotracer flow rate measurements. The workspace was created in Geant4 Application for Tomographic Emission (GATE) simulation toolkit and was called Industrial Radioisotope Applications Virtual Laboratory. The flexibility of GATE and the fact that it is an open-source software render it advantageous to radioisotope technology practitioners, educators, and students. The comparison of the simulation results with experimental results that are available in the literature showed the effectiveness of the virtual laboratory.

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Section: Evolution Of Gatementioning

confidence: 99%

A virtual laboratory for radiotracer and sealed-source applications in industry

et al. 2021

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“…Therefore, geometric representation accuracy and flexibility were critical factors in choosing the simulation toolkit to carry out this study. GATE 8.2 is one of the prominent MC simulation toolkits with a wide range of medical physics applications (Jan et al, 2004;Papadimitroulas et al, 2012;Sarrut et al, 2014); Furthermore, GATE offers the capability of importing 3D computer-aided design models (Banoqitah et al, 2018). This means that complex shapes can be modeled more easily in simulation and with acceptable detail.…”

Section: Monte Carlo (Mc) Simulationmentioning

confidence: 99%

A Monte Carlo study on the effect of nanoparticle shapes on dose enhancement and distribution using 197Au and 195Pt

Abolaban

Taha

2020

Journal of Radiation Research and Applied Sciences

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This study investigates the effects of nanoparticles entity shapes inside tumor mass on dose distribution and dose enhancement. Gold (197 Au) and Platinum (195 Pt) nanoparticles of four different shapes were used in this study. Each one has different air cavity inside, which in turns affect the scattering probability. However, all of them are spheres and have the same diameter of 1 μm, these shapes are solid sphere (SS), hexagonal air cavities sphere (HS), triangular air cavities sphere (TS), and circular air cavities sphere (CS). In this study, a Monte Carlo GATE 8.2 code was used to simulate a 6 MV photon beam for Elekta Infinity Versa HD. A voxel of 1 mm, which contains 17 same nanoparticles stacked together, is irradiated with 6 MV beam. Dose distribution at all adjacent voxel are measured using a 'DOSE ACTOR' tool available in GATE 8.2 simulation code. Results showed that the most enhanced dose distribution found is in (HS), as it produces more scattering radiation, hence increasing the dose to tumor cells inside the cavities. This investigation could give indication about scattering behavior toward nanoscale particles. In addition, it may, improve radiation planning for patients being treated with radiotherapy.

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“…The Monte Carlo simulation is a valuable tool for accurately simulating the production of Xrays in many imaging and therapeutic applications [7][8][9][10][11]. Geant4 Application for Tomographic Emission (GATE) made the simulation even more accessible to many enduser researchers, eliminating the need for sophisticated software development [12][13][14][15][16]. Simulating X-ray mammography with Geant4 application is of great interest to many researchers who don't have access to clinical machines.…”

Section: Introductionmentioning

confidence: 99%

“…Several published studies have simulated Xray mammography and the effect of scatter removal techniques [17][18][19][20][21]. One method used a pencil beam and was focused on image processing-based correction techniques [15]. Another study aimed to validate the simulation of dosimetry in mammography phantom using thermoluminescent dosimeters, metal oxide semiconductor field-effect transistor dosimeters, and GafChromic™ films [18,19].…”

Section: Introductionmentioning

confidence: 99%

Geant4 Simulation of Scatter Radiation Removal: Comparison and Validation of Anti-scatter Grid and Air Gap for X-ray Mammography

2024

JJP

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X-ray mammography modality provides excellent low-contrast resolution images with low scatter radiation, making it the gold standard in diagnosing breast cancer. Anti-scatter grid and air gap techniques are typically used to further minimize the scatter radiation and improve image quality. Thus, Geant4 simulation was used to investigate the effectiveness of these techniques in removing scatter radiation in X-ray mammography. The effectiveness of an anti-scatter grid was evaluated using the Bucky factor, where it linearly increased with increasing the anti-scatter grid ratio. It was found that increasing the grid frequency affects the Bucky factor depending on the design of the grid ratio. This research proved that designing an anti-scatter grid with high grid frequency (80 lp/mm), low grid ratio (2:1), and proper orientation minimized common anti-scatter grid artifacts. The effectiveness of the air gap technique was also evaluated using the air gap dose factor. It increased non-linearly with increasing magnification. This research validated that using smaller pixel sizes and small focal spot sizes improved spatial resolution with magnification. Our simulation validated that the anti-scatter grid and air gap were effective techniques in removing scatter radiation. By comparing these techniques, the anti-scatter grid was more effective in removing scatter radiation at the expense of increasing the radiation absorbed dose with the exception of 2.0 magnification. It’s recommended to be extremely cautious when using 2.0 magnification or a grid ratio higher or equal to 8:1. These parameters may cause the radiation absorbed dose to be increased by several folds. Keywords: Geant4, Gate, X-ray mammography, Scatter removal, Anti-scatter grid, Air gap.

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A Monte Carlo study of arms effect in myocardial perfusion of normal and abnormal cases utilizing STL heart shape

Cited by 5 publications

References 7 publications

A virtual laboratory for radiotracer and sealed-source applications in industry

A virtual laboratory for radiotracer and sealed-source applications in industry

A Monte Carlo study on the effect of nanoparticle shapes on dose enhancement and distribution using 197Au and 195Pt

Geant4 Simulation of Scatter Radiation Removal: Comparison and Validation of Anti-scatter Grid and Air Gap for X-ray Mammography

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