美国科研出版社期刊
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作者:Philip von Voigts-Rhetz , Hilke Vorwerk , Klemens Zink
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.150-161Scientific Research Publishing
摘要:Purpose: All present dosimetry protocolsrecommend well-guarded parallelplate ion chambers for electron dosimetry. Forthe guard-less Markus chamber, an energy dependent fluence perturbationcorrection pcav is given. Thisperturbation correction was experimentally det...
作者:Phillip Prior , Irina Sparks , J. Frank Wilson ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (01), pp.1-9Scientific Research Publishing
摘要:Purpose: This work evaluates the use of target and organs at risk (OAR) dose-volumegoals in 3D conformal radiotherapy (3DCRT) planning for node positive breastcancer (NPBC) patients undergoing regional nodal irradiation afterlumpectomy/mastectomy. Methods: Dosimetric data fo...
作者:Kiyoshi Yoda
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.193-196Scientific Research Publishing
摘要:Aradiotherapy treatment margin formula has been analytically derived when astandard deviation (SD) of systematic positioning errors Ʃ isrelatively small compared to an SD of random positioning errors σ.The margin formula for 0 ≤ Ʃ ≤ σ was calculated by linea...
作者:Vicky W. Huang , Kirpal Kohli
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.124-138Scientific Research Publishing
摘要:Streakingartifacts on computed tomography (CT) images are caused by high densitymaterials such as hip prosthesis, surgical clips and dental fillings. Theartifacts can lead to compromised clinical outcome due to the inability todifferentiate tumor volume and the uncertainties...
作者:Ibrahem H. Kanbayti , Qamar Ghafoor , Gareth Webster ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.105-110Scientific Research Publishing
摘要:This work aims at quantifying intra-fractional motion errors and evaluatingthe appropriateness of a Planning Target Volume (PTV) margin for QueenElizabeth (QE) Hospital’s patients. Intra-fractional motion errors werequantified for 29 patients who underwent lung Stereotactic ...
作者:Muhammad Kamran Rasheed Nasir , Nauman Amjad , Aasia Razzaq ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (01), pp.36-56Scientific Research Publishing
摘要:Small radiation fields are abundantly used in modern radiotherapytechniques like in IMRT and SRS. In order to commission these techniques,dosimetric data for small fields is required. The purpose of this study is tocompare dosimetric measurements with two different ion chamb...
作者:Volker Hietschold , Andrij Abramyuk , Tareq Juratli ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.174-192Scientific Research Publishing
摘要:Dynamic measurements of T 1 shortening (dynamic contrastenhanced—DCE) as well as of T 2* shortening(dynamic susceptibility contrast—DSC) as two separate measurement strategiesare widely used to quantitatively describe...
作者:Sara Tegami , Stephen D. Bello , Shuang Luan ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (02), pp.197-207Scientific Research Publishing
摘要:Relativebiological effectiveness (RBE) is an important quantity in planning particlebeam cancer therapy. In general, the RBE describes the biological effectivenessof a given primary beam with respect to a reference photon irradiation. RBEvaries not only for different primary beam...
作者:Guerda Massillon-JL , Nestor Aragó , n-Martí ...
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (01), pp.80-92Scientific Research Publishing
摘要:This work investigated the absorbed dose towater rate under reference conditions in a Cyberknife VSI system usingradiochromic films EBT3 and MD-V3 and three ionization chambers: an Exradin A12and two FC65P Welh ö fer Scanditronixwith different serial numbers. The correc...
作者:Chengyu Shi , Brian Wang
来源:[J].International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2017, Vol.06 (01), pp.21-30Scientific Research Publishing
摘要:The purposeof this study is to investigate the potential use of Ir-192 as the source forreal time imaging during HDR (High Dose Rate) brachytherapy treatment. Phantommeasurement was performed to determine outside of the body dose. Monte Carlocode, EGSnrcMP egs_inprz, was use...

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