Výsledky vyhledávání - "Omar, Zeidan"

Measurements of lateral penumbra for uniform scanning proton beams under various beam delivery conditions and comparison to the XiO treatment planning system

Autor: Suresh, Rana, Omar, Zeidan, Eric, Ramirez, Michael, Rains, Junfang, Gao, Yuanshui, Zheng

Publikováno v: Medical physics. 40(9)

The main purposes of this study were to (1) investigate the dependency of lateral penumbra (80%-20% distance) of uniform scanning proton beams on various factors such as air gap, proton range, modulation width, compensator thickness, and depth, and (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::8c2715450e84f187215d088c9ec1ed96
https://pubmed.ncbi.nlm.nih.gov/24007141

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Image-guided method for TLD-based in vivo rectal dose verification with endorectal balloon in proton therapy for prostate cancer

Autor: Wen C, Hsi, Marcio, Fagundes, Omar, Zeidan, Eugen, Hug, Niek, Schreuder

Publikováno v: Medical physics. 40(5)

To present a practical image-guided method to position an endorectal balloon that improves in vivo thermoluminiscent dosimeter (TLD) measurements of rectal doses in proton therapy for prostate cancer.TLDs were combined with endorectal balloons to mea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7cf82151450151113ec869edaf9ab565
https://pubmed.ncbi.nlm.nih.gov/23635263

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Measurements of neutron dose equivalent for a proton therapy center using uniform scanning proton beams

Autor: Yuanshui, Zheng, Yaxi, Liu, Omar, Zeidan, Andries Niek, Schreuder, Sameer, Keole

Publikováno v: Medical physics. 39(6)

Neutron exposure is of concern in proton therapy, and varies with beam delivery technique, nozzle design, and treatment conditions. Uniform scanning is an emerging treatment technique in proton therapy, but neutron exposure for this technique has not

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d2ef8c81f5a3d0417c68e69a066ccf8d
https://pubmed.ncbi.nlm.nih.gov/22755728

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Spatial correlation of proton irradiation-induced activity and dose in polymer gel phantoms for PET/CT delivery verification studies

Autor: Olena, Lopatiuk-Tirpak, Zhong, Su, Zuofeng, Li, Wen, Hsi, Sanford, Meeks, Omar, Zeidan

Publikováno v: Medical physics. 38(12)

This work demonstrates a novel application of BANG3-Pro2 polymer gel dosimeter as a dosimetric phantom able to accurately capture both dose and induced activity.BANG3-Pro2 dosimeters were irradiated with a clinical proton beam using an unmodulated be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::fc4d3bcdfc7f922f1613cb736640c8cb
https://pubmed.ncbi.nlm.nih.gov/22149831

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Commissioning of output factors for uniform scanning proton beams

Autor: Yuanshui, Zheng, Eric, Ramirez, Anthony, Mascia, Xiaoning, Ding, Benny, Okoth, Omar, Zeidan, Wen, Hsi, Ben, Harris, Andries N, Schreuder, Sameer, Keole

Publikováno v: Medical physics. 38(4)

Current commercial treatment planning systems are not able to accurately predict output factors and calculate monitor units for proton fields. Patient-specific field output factors are thus determined by either measurements or empirical modeling base

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d7b7c86687772a936666fb4714863993
https://pubmed.ncbi.nlm.nih.gov/21626965

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Comprehensive 3D visual simulation for radiation therapy planning

Autor: Felix G, Hamza-Lup, Ivan, Sopin, Omar, Zeidan

Publikováno v: Studies in health technology and informatics. 125

External beam radiation therapy is concerned with the precise and accurate delivery of radiation for cancer treatment. Highly-collimated beams are generated in a linear accelerator, consisting of several hardware components that move around the patie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::71cf01feaedd17e4470f98dd25a5909b
https://pubmed.ncbi.nlm.nih.gov/17377258

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Akademický článek

An end-to-end assessment of range uncertainty in proton therapy using animal tissues.

Autor: Yuanshui Zheng, Yixiu Kang, Omar Zeidan, Niek Schreuder

Publikováno v: Physics in Medicine & Biology; 11/21/2016, Vol. 61 Issue 22, p1-1, 1p

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