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Distal edge determination precision for a multi-slat prompt-gamma camera: A comprehensive simulation and optimization of the detection system

Autor: A. Morozov, Paulo Crespo, Hugo Simoes

Publikováno v: Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB). 84

Multi-slat prompt-gamma camera is a promising tool for range monitoring during proton therapy. We report the results of a comprehensive simulation study analyzing the precision which is possible to reach with this camera in determination of the posit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7445be2ecc89982599a3b984539774fe
https://pubmed.ncbi.nlm.nih.gov/33882445

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Monitoring Tumor Lung Irradiation With Megavoltage Patient-Scattered Radiation: A Full System Simulation Study

Autor: J.A.M. Santos, Mariana Alves Barros, Ana Luisa Lopes, Paulo Crespo, Carolina Travassos, P.J.B.M. Rachinhas, Hugo Simoes, Joana Lencart

Publikováno v: IEEE Transactions on Radiation and Plasma Medical Sciences. 1:452-459

We analyze by simulation a fully-3-D, low-dose imaging system aiming at assisting external-beam radiotherapy, either for on-board patient imaging, or for real-time radiotherapy monitoring. The system consists in detecting megavoltage patient-scattere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e55b6af65f426c9a9336d1619750f98
https://doi.org/10.1109/trpms.2017.2724139

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Simulation of proton range monitoring in an anthropomorphic phantom using multi-slat collimators and time-of-flight detection of prompt-gamma quanta

Autor: R.F. Marques, Dennis R. Schaart, Patricia Cambraia Lopes, Hugo Simoes, Katia Parodi, Paulo Crespo

Publikováno v: Physica Medica: an international journal devoted to the applications of physics to medicine and biology, 54

Prompt-gamma (PG) imaging has the potential for monitoring proton therapy in real time. Different approaches are investigated. We focus on developing multi-slat collimators to image PG quanta, aiming at optimizing collimator performance to detect dev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac84b90b3b7e994a7f0a2b34e995af51
http://resolver.tudelft.nl/uuid:50b235cc-e7b6-4bc4-b6c6-3307229f736b

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Rotation-Free Scattered-Radiation Imaging with a Radiotherapy X-Ray Linac

Autor: P.J.B.M. Rachinhas, R.F. Marques, Andreas Wagner, Hugo Simoes, Paulo Crespo

Publikováno v: IEEE Nuclear Science Symposium and Medical Imaging Conference, 10.-17.11.2018, Sydney, Australien
IEEE Nuclear Science Symposium and Medical Imaging Conference, 10.-17.11.2018, Sydney, AustralienIEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC): IEEE, 1-3

The OrthoCT (acronym for orthogonal computed tomography) concept, based on orthogonal ray imaging, is a new low-dose imaging technique under investigation to potentially assist external-beam radiation therapy treatments. It consists in detecting radi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a25c9b0894ffa24b0dbb04860cf9ddf
https://www.hzdr.de/publications/Publ-28704-1

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Dose-Free Monitoring of Radiotherapy Treatments With Scattered Photons: Concept and Simulation Study

Autor: Brigida Costa Ferreira, Maria do Carmo Lopes, P. Fonte, Hugo Simoes, Marco Pinto, Micaela Cunha, Paulo Crespo

Publikováno v: ResearcherID

Modern radiotherapy (RT) techniques are providing increasingly higher conformality, a potential invaluable clinical benefit to the patient. Consequently, in both single and multi-fractionated RT, patient misalignments and changing internal anatomy ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8913384684d02a5ed5deb007ff3fc3ac
https://doi.org/10.1109/tns.2013.2265159

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Impact of tumor contrast in orthogonal ray imaging: A prostate irradiation study

Autor: Joao A. S. Barata, Hugo Simoes, Joana Lencart, J.A.M. Santos, Ana Luisa Lopes, Paulo Crespo

Publikováno v: 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD).

A new very-low-dose imaging technology to assist external-beam radiotherapy treatments has been proposed. This technique, called orthogonal ray imaging, does not require X-ray source rotation around the target. It is based on the detection of photons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acb131b64a91ac9fe07981068c354369
https://doi.org/10.1109/nssmic.2016.8069392

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OrthoCT for tumor lung irradiation: A simulation study

Autor: Mariana Alves Barros, Hugo Simoes, Paulo Crespo

Publikováno v: 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD).

The OrthoCT (standing for orthogonal computed tomography) imaging technique consists in detecting radiation scattered in the patient and emitted at right angles with respect to the incident beam axis. Since photon scattering in the patient occurs wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f2fcc245582c018b0ba540f1047a5c9
https://doi.org/10.1109/nssmic.2016.8069391

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Experimental characterization of megavoltage beams for orthogonal ray imaging

Autor: João A. M. Santos, Paulo Crespo, Joana Lencart, Mariana Alves Barros, Carolina Travassos, P.J.B.M. Rachinhas, Hugo Simoes

Publikováno v: 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD).

OrthoCT (orthogonal computed tomography) is a potential new imaging technique that aims to acquire images of the volume to be irradiated immediately before or during a radiotherapy treatment. It potentially provides imaging with very low to eventuall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60a4d89fb9b4c59bf9050c1cde973a39
https://doi.org/10.1109/nssmic.2016.8069472

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