Results 21 to 30 of about 28,886 (305)

Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique [PDF]

Journal of Biomedical Physics and Engineering, 2023
Background: As compared to the flattened photon beam, removing the flattening filter (FF) from the head of a gantry decreases the average energy of the photon beam and increases the dose rate, leading to an impact on the quality of treatment plans ...
Dinesh Kumar Saroj, Suresh Yadav, Neetu Paliwal, Subhas Haldar, Amol Jagtap, Arvind Kumar   +5 more
doaj   +1 more source

Dose agreement analysis of treatment planning system-calculated doses and markus chamber-measured doses in the near-surface region for breast cancer patients' conformal treatment plans

Journal of Medical Physics, 2022
Background: Surface/skin dose measurement is one of the most challenging tasks for clinical dosimetry in radiotherapy and comparison with almost all the commercially available treatment planning systems (TPSs) brings a significant variation with the ...
Garima Gaur, Raja Paramjeet Singh Banipal, Pardeep Garg, Om Prakash Gurjar, Gurpreet Kaur, Sheetal Sachdeva, Romikant Grover, Manraj Singh Kang, Vinod Kumar Dangwal   +8 more
doaj   +1 more source

UNCONVENTIONAL FRACTIONATION RADIOTHERAPY REGIMENS IN TREATMENT OF INOPERABLE LUNG CANCER

Сибирский онкологический журнал, 2019
The purpose of the study was to compare the efficacy and toxicity of hypofractionated versus hyperfractionated radiotherapy in patients with inoperable lung cancer.Material and Methods.
D. V. Gogolin, I. A. Gulidov, K. E. Medvedeva, Y. A. Ragulin, Y. S. Mardinsky, I. N. Ivanova, L. V. Kursova, I. I. Kotuhov, A. Y. Buksha   +8 more
doaj   +1 more source

Conventional 3D conformal radiotherapy and volumetric modulated arc therapy for cervical cancer: Comparison of clinical results with special consideration of the influence of patient- and treatment-related parameters

, 2023
Purpose Intensity-modulated radiotherapy (IMRT) for cervical cancer yields favorable results in terms of oncological outcomes, acute toxicity, and late toxicity.
von Sivers, Franziska-Felicitas; Department of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Göttingen, Germany, Dröge, Leif Hendrik; Department of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Göttingen, Germany, Schirmer, Markus Anton, von Sivers, Franziska-Felicitas, Wolff, Hendrik Andreas; Department of Radiotherapy and Radiation Oncology, University Medical Center Regensburg, Regensburg, Germany, Schirmer, Markus Anton; Department of Radiotherapy and Radiation Oncology, University Medical Center Göttingen, Göttingen, Germany, Dröge, Leif Hendrik, Wolff, Hendrik Andreas   +7 more
core   +1 more source

Different meaning of the mean heart dose between 3D-CRT and IMRT for breast cancer radiotherapy

Frontiers in Oncology, 2023
BackgroundPrevious studies in 2D and in 3D conformal radiotherapy concludes that the maximal heart distance and the mean heart dose (MHD) are considered predictive of late cardiac toxicities.
Jessica Prunaretty, Jessica Prunaretty, Celine Bourgier, Celine Bourgier, Celine Bourgier, Sophie Gourgou, Claire Lemanski, Claire Lemanski, David Azria, David Azria, David Azria, Pascal Fenoglietto, Pascal Fenoglietto   +12 more
doaj   +1 more source

Dosimetric Evaluation of Commercially Available Flat vs. Self-Produced 3D-Conformal Silicone Boluses for the Head and Neck Region

Frontiers in Oncology, 2022
BackgroundBoluses are routinely used in radiotherapy to modify surface doses. Nevertheless, considerable dose discrepancies may occur in some cases due to fit inaccuracy of commercially available standard flat boluses.
Stephan Pollmann, André Toussaint, Michael Flentje, Sonja Wegener, Victor Lewitzki   +4 more
doaj   +1 more source

Geometrical pre-planning for conformal radiotherapy [PDF]

Acta Oncologica, 2007
The optimum selection of beams and arcs in conformal techniques is of the outmost importance in modern radiotherapy. In this work we give a description of an analytic method to aid optimum selection, which is based on minimizing the intersection between beams and organs at risk (OAR) and on minimizing the intersection between the beam and the planning ...
Ioannis, Tsougos, Eduard, Schreibmann, Michael, Lahanas, Kiki, Theodorou, Constantin, Kappas, Dimos, Baltas   +5 more
openaire   +2 more sources

Recurrence of nasopharyngeal carcinoma in the parotid region after parotid-gland-sparing radiotherapy

Journal of the Formosan Medical Association, 2011
This study reported our experience of the clinical characteristics of periparotid recurrence of nasopharyngeal carcinoma (NPC) after parotid-gland-sparing radiotherapy. We retrospectively reviewed the charts of 296 patients with NPC who underwent parotid-
Deng-Shan Lin, Yee-Min Jen, Jih-Chin Lee, Shao-Cheng Liu, Yaoh-Shiang Lin   +4 more
doaj   +1 more source

3D conformal postoperative radiotherapy with concomitant boost in uterine cancer: results of a phase I-II study (ADA-RT-1)

, 2011
A phase I-II prospective clinical trial of adjuvant accelerated radiation therapy (ADA-RT-1 trial) was set up in order to investigate the feasibility and efficacy of a pelvic conformal radiotherapy technique with concomitant boost (CB technique) to the ...
Scambia, Giovanni, Numa Cellini, Ippolito, Edy, Cellini, Numa, Morganti, Alessio Giuseppe, Mariangela Massaccesi, Valentini, Vincenzo, MASSACCESI M, Macchia, Gabriella, Francesco Deodato, Bibbò R, Alessio Giuseppe Morganti, Ferrandina, Maria Gabriella, Massaccesi, Mariangela, IPPOLITO E, CELLINI N, Edy Ippolito, Deodato, Francesco, MACCHIA G, DEODATO F, Romina Bibbò, FERRANDINA G, Gabriella Macchia, Vincenzo Valentini, VALENTINI V, Giovanni Scambia, SCAMBIA G, Valentini, Viola, Gabriella Ferrandina   +28 more
core   +1 more source

In vivo skin dose measurement in breast conformal radiotherapy [PDF]

, 2016
Aim of the study: Accurate skin dose assessment is necessary during breast radiotherapy to assure that the skin dose is below the tolerance level and is sufficient to prevent tumour recurrence.
Atefeh Vejdani Noghreiyan, Shokouhozaman Soleymanifard, Seyed Amir Aledavood, David Davenport, Mahdi Ghorbani, Farideh Jamali   +5 more
core   +1 more source