Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Falk Pönisch"'
Autor:
Andrew G. Lee, Deborah A. Kuban, L. Archambault, Luc Beaulieu, Sam Beddar, Tina Marie Briere, Falk Pönisch
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 78:280-287
In the present study, we have presented and validated a plastic scintillation detector (PSD) system designed for real-time multiprobe in vivo measurements.The PSDs were built with a dose-sensitive volume of 0.4 mm(3). The PSDs were assembled into mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d911b374b5e3a5efab4ef19a8db850fb
https://doi.org/10.1016/j.ijrobp.2009.11.025
https://doi.org/10.1016/j.ijrobp.2009.11.025
Autor:
Tina Marie Briere, Narayan Sahoo, L. Archambault, Sam Beddar, Falk Pönisch, Michael Gillin, Radhe Mohan
Publikováno v:
Medical Physics. 36:1478-1485
Complex radiation therapy techniques require dosimetric verification of treatment planning and delivery. The authors investigated a liquid scintillator (LS) system for application for real-time high-energy photon beam dosimetry. The system was compri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0053038474bd4815d1cf9e151a6e085c
https://doi.org/10.1118/1.3106390
https://doi.org/10.1118/1.3106390
Autor:
Nasreddin Abolmaali, Tobias Hölscher, Wolfgang Enghardt, Michael Baumann, Steffen Appold, Falk Pönisch, Jörg Steinbach, Carsten Evers, Klaus Zöphel, Daniel Zips, Charles Gillham, Jörg Kotzerke, Thomas Herrmann
Publikováno v:
Radiotherapy and Oncology 88(2008), 335-341
Background and purpose Loco-regional failure after radiotherapy with total doses of 60–70 Gy for non-small cell lung cancer (NSCLC) remains a major clinical problem. Escalation of radiation dose is often limited because of exceeding normal tissue c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc6d00d9c437af304ea5f26a9ecbccd3
https://doi.org/10.1016/j.radonc.2008.05.004
https://doi.org/10.1016/j.radonc.2008.05.004
Autor:
Stephen F Kry, Uwe Titt, Oleg N Vassiliev, Mohammad Salehpour, Falk Pönisch, Marilyn Stovall, David S Followill, R. Allen White
Publikováno v:
Medical Physics. 34:3489-3499
As cancer therapy becomes more efficacious and patients survive longer, the potential for late effects increases, including effects induced by radiation dose delivered away from the treatment site. This out-of-field radiation is of particular concern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6a9b6787eadcd0b04f108fc3a3bac08
https://doi.org/10.1118/1.2756940
https://doi.org/10.1118/1.2756940
Autor:
Uwe Titt, Michael Gillin, Radhe Mohan, Mohammad Salehpour, Falk Pönisch, Oleg N. Vassiliev, Stephen F Kry
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 68:1260-1264
Purpose: To measure and compare neutron fluence around an accelerator operating at 18 MV, both with the flattening filter present (FF mode) and absent (flattening-filter–free [FFF] mode). Methods and Materials: The neutron fluence was measured at s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e532e5a662c2e238e7a3b5c7ea10a795
https://doi.org/10.1016/j.ijrobp.2007.04.002
https://doi.org/10.1016/j.ijrobp.2007.04.002
Autor:
Radhe Mohan, Falk Pönisch, Stephen F Kry, Uwe Titt, R. Allen White, Mohammad Salehpour, David S Followill, Oleg N Vassiliev
Publikováno v:
Medical Physics. 33:4405-4413
Dose to the patient outside of the treatment field is important when evaluating the outcome of radiotherapy treatments. However, determining out-of-field doses for any particular treatment plan currently requires either time-consuming measurements or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::789cc8b38651ec0c563a7a0ed9ff5028
https://doi.org/10.1118/1.2360013
https://doi.org/10.1118/1.2360013
Publikováno v:
Medical Physics. 33:3270-3273
In conventional linear accelerators, the flattening filter provides a uniform lateral dose profile. In intensity modulated radiation therapy applications, however, the flatness of the photon field and hence the presence of a flattening filter, is not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ef82d5b219ed1ba541d35e4463706c2
https://doi.org/10.1118/1.2229430
https://doi.org/10.1118/1.2229430
Publikováno v:
Medical Physics. 33:1738-1746
Several studies have shown that removal of the flattening filter from the treatment head of a clinical accelerator increases the dose rate and changes the lateral profile in radiation therapy with photons. However, the multileaf collimator (MLC) used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::230d869e6d2d4d262b7ffba52ff7c1e7
https://doi.org/10.1118/1.2201149
https://doi.org/10.1118/1.2201149
Publikováno v:
Medical Physics. 33:1595-1602
In principle, the concept of flat initial radiation-dose distribution across the beam is unnecessary for intensity modulated radiation therapy. Dynamic leaf positioning during irradiation could appropriately adjust the fluence distribution of an unfl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6e6e9e49828bb51b59c5a7b5e4e7321
https://doi.org/10.1118/1.2198327
https://doi.org/10.1118/1.2198327
Publikováno v:
Medical Physics. 33:820-827
In conventional clinical linear accelerators, the flattening filter scatters and absorbs a large fraction of primary photons. Increasing the beam-on time, which also increases the out-of-field exposure to patients, compensates for the reduction in ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88250999de4583f9eacacd0ec308ebc3
https://doi.org/10.1118/1.2174720
https://doi.org/10.1118/1.2174720