Results 11 to 20 of about 845 (126)

Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter [PDF]

Journal of Biomedical Physics and Engineering, 2019
Background: Given the importance of scattered and low doses in secondary cancer caused by radiation treatment, the point dose of critical organs, which were not subjected to radiation treatment in breast cancer radiotherapy, was measured.
Mohammadi M
exaly   +4 more sources

Evaluation of a flexible thyroid shield in dental panoramic radiography utilizing bismuth oxide silicone rubber composite and Rando phantom [PDF]

Scientific Reports
Initially, micro and nano bismuth oxide/ silicone rubber (Bi2O3/SR) composites at concentration of 70 wt% were fabricated. Analyses including XRD, SEM, EDS-Map, and TGA were performed on the samples, which indicated the dispersion of bismuth oxide micro ...
Dariush Sardari, Shahryar Malekie, Sardari Dariush   +2 more
exaly   +3 more sources

Dose estimation using optically stimulated luminescence dosimeter and EBT3 films for various treatment techniques in Alderson Rando phantom and estimation of secondary cancer incidence for carcinoma of left breast [PDF]

Journal of Medical Physics, 2022
Aim: The aim of this study was to measure the dose to planning target and organ at risk (OAR) using Alderson Rando phantom for various treatment techniques in left breast radiotherapy and to estimate the secondary cancer incidence. Materials and Methods:
N Sushma, Shanmukhappa Kaginelli, P Sathiyaraj, Sakthivel Vasanthan, K M Ganesh   +4 more
doaj   +2 more sources

Mixed reality-guided intraoperative visual support for combined intracavitary and interstitial brachytherapy for cervical cancer [PDF]

Technical Innovations & Patient Support in Radiation Oncology
Purpose: This study aimed to develop and evaluate a mixed reality-guided intraoperative visual support system for safe and accurate needle applicator insertion for combined intracavitary and interstitial brachytherapy (IC/IS-BT). Materials and Methods: A
Ryuta Hirai, Tomohiro Ohta, Mitsunobu Igari, Yu Kumazaki, Jun Watanabe, Keita Tsukahara, Misaki Iino, Yasuhiro Ryuno, Tomomi Aoshika, Satoshi Saito, Takanori Abe, Shin-ei Noda, Shingo Kato   +12 more
doaj   +2 more sources

Dosimetric impact of stopping power for human bone porosity with dual-energy computed tomography in scanned carbon-ion therapy treatment planning [PDF]

Scientific Reports
Few reports have documented how the accuracy of stopping power ratio (SPR) prediction for porous bone tissue affects the dose distribution of scanned carbon-ion beam therapy.
Masashi Yagi, Yushi Wakisaka, Jun Takeno, Shintaro Kanada, Toshiro Tsubouchi, Noriaki Hamatani, Hiroyasu Maruo, Masaaki Takashina, Takayoshi Ishii, Tatsuaki Kanai, Shinichi Shimizu, Kazuhiko Ogawa   +11 more
doaj   +2 more sources

Radiation Dose Assessment in Diagnostic Imaging Using Thermoluminescent Dosimeter-100H Dosimeters and a RANDO Phantom: Insights from Chest, Pelvic, and Skull Examinations [PDF]

Journal of Medical Physics
Purpose: This study aims to evaluate radiation doses to the skin, pelvis, and skull during routine radiographic imaging procedures. Materials and Methods: Entrance skin dose (ESD) was assessed using both direct and indirect methods.
Sedigheh Sina, Shima Alizadeh, Sadegh Abbasipour, Mozhgan Dalir, Mohaddeseh Heydarinia, Fatemeh Norouzalizadeh, Mobarakeh Nasiri, Mohammad Hossein Sadeghi, Kazem Sadeghi Ebrahim Mohammadi, Elnaz Saeedian, Minoo Shakerian, Mahboobeh Sheiki   +11 more
doaj   +2 more sources

Retrospective Comparative Study on Dose Gradients and Peripheral Dose Management in Advanced Radiotherapy Systems [PDF]

Journal of Medical Physics
Background and Purpose: This study aimed to compare dose gradients and peripheral dose spillage across three advanced radiotherapy modalities: C-Arm Linac (TrueBeam STx), Ring Gantry (Radixact®), and Robotic Arm Linac (CyberKnife®).
Abhay Kumar Singh, Anuj Vijay, Manindra Bhushan   +2 more
doaj   +2 more sources

Detection of the failed-tolerance causes of electronic-portal-imaging-device-based in vivo dosimetry using machine learning for volumetric-modulated arc therapy: A feasibility study [PDF]

Physics and Imaging in Radiation Oncology
Background and Purpose: When electronic-portal-imaging-device (EPID)-based in vivo dosimetry (IVD) identifies dose tolerance failures, the cause of the failures should be evaluated.
Nipon Saiyo, Hironori Kojima, Kimiya Noto, Naoki Isomura, Kosuke Tsukamoto, Shotaro Yamaguchi, Yuto Segawa, Junya Kohigashi, Akihiro Takemura   +8 more
doaj   +2 more sources

Determination of Exposure during Handling of I Seed Using Thermoluminescent Dosimeter and Monte Carlo Method Based on Computational Phantom [PDF]

Journal of Radiation Protection and Research, 2023
Background The thermoluminescent dosimeter (TLD) and Monte Carlo (MC) dosimetry are carried out to determine the occupational dose for personnel in the handling of 125I seed sources.
Hosein Poorbaygi, Seyed Mostafa Salimi, Falamarz Torkzadeh, Saeid Hamidi, Shahab Sheibani   +4 more
doaj   +1 more source

Sensitivity Response Analysis of Optical Surface Monitoring Systems Using the Fitzpatrick Scale: A Phantom Study [PDF]

Advances in Radiation Oncology
Purpose: Optical surface monitoring systems (OSMSs) have gained substantial attention in modern radiation therapy, specifically in the context of surface guided radiation therapy, which offers real-time patient surface monitoring, ensuring accurate and ...
Rakesh Kapoor, MD, Aarti Jamwal, PhD, Gaganpreet Singh, PhD, Arun S. Oinam, PhD, Divya Khosla, MD, Mandeep Garg, MD   +5 more
doaj   +2 more sources