Results 21 to 30 of about 1,334,534 (293)

Proton-proton Bremsstrahlung

Nuclear Physics B, 1967
Abstract We calculate proton-proton Bremsstrahlung cross sections using the Tabakin separable potentials to generate off-shell nucleon-nucleon t-matrix elements in low partial waves and off-shell one-pion-exchange amplitudes for the higher partial waves.
W.A. Pearce, W.A. Gale, I.M. Duck
openaire   +2 more sources

Applications of various range shifters for proton pencil beam scanning radiotherapy

Radiation Oncology, 2021
Background A range pull-back device, such as a machine-related range shifter (MRS) or a universal patient-related range shifter (UPRS), is needed in pencil beam scanning technique to treat shallow tumors.
Haibo Lin, Chengyu Shi, Sheng Huang, Jiajian Shen, Minglei Kang, Qing Chen, Huifang Zhai, James McDonough, Zelig Tochner, Curtiland Deville, Charles B. Simone, Stefan Both   +11 more
doaj   +1 more source

Technical assessment of the NDI Polaris Vega optical tracking system

Radiation Oncology, 2021
The Polaris product line from Northern Digital Inc. is well known for accurate optical tracking measurements in research and medical environments. The Spectra position sensor, to date often found in image guided radiotherapy suites, has however reached ...
Giovanni Fattori, Antony John Lomax, Damien Charles Weber, Sairos Safai   +3 more
doaj   +1 more source

Registration error of the liver CT using deformable image registration of MIM Maestro and Velocity AI

BMC Medical Imaging, 2017
Background Understanding the irradiated area and dose correctly is important for the reirradiation of organs that deform after irradiation, such as the liver.
Nobuyoshi Fukumitsu, Kazunori Nitta, Toshiyuki Terunuma, Toshiyuki Okumura, Haruko Numajiri, Yoshiko Oshiro, Kayoko Ohnishi, Masashi Mizumoto, Teruhito Aihara, Hitoshi Ishikawa, Koji Tsuboi, Hideyuki Sakurai   +11 more
doaj   +1 more source

Deep learning method for prediction of patient-specific dose distribution in breast cancer

Radiation Oncology, 2021
Background Patient-specific dose prediction improves the efficiency and quality of radiation treatment planning and reduces the time required to find the optimal plan. In this study, a patient-specific dose prediction model was developed for a left-sided
Sang Hee Ahn, EunSook Kim, Chankyu Kim, Wonjoong Cheon, Myeongsoo Kim, Se Byeong Lee, Young Kyung Lim, Haksoo Kim, Dongho Shin, Dae Yong Kim, Jong Hwi Jeong   +10 more
doaj   +1 more source

Comparison of pencil beam and Monte Carlo calculations with ion chamber array measurements for patient-specific quality assurance

Radiation Medicine and Protection, 2022
Objective: To determine under what conditions and criteria comparisons between calculations made with the current clinical treatment planning system (Syngo) and an in-house built TPS (TIMPS) would allow skipping of in-beam portal-specific measurements ...
Yu Deng, Zhi Chen, Qianxia Wang, Pablo Yepes, Zhuangming Shen, Hongliang Chen, Jie Li, Michael F. Moyers   +7 more
doaj   +1 more source

Leaf open time sinogram (LOTS): a novel approach for patient specific quality assurance of total marrow irradiation

Radiation Oncology, 2020
There is no ideal detector-phantom combination to perform patient specific quality assurance (PSQA) for Total Marrow (TMI) and Lymphoid (TMLI) Irradiation plan.
Rajesh Thiyagarajan, Dayananda Shamurailatpam Sharma, Suryakant Kaushik, Mayur Sawant, K. Ganapathy, N. Arunai Nambi Raj, Srinivas Chilukuri, Sham C. Sundar, Kartikeswar Ch. Patro, Arjunan Manikandan, M. P. Noufal, Rangasamy Sivaraman, Jose Easow, Rakesh Jalali   +13 more
doaj   +1 more source

Monitoring of breathing motion in image-guided PBS proton therapy: comparative analysis of optical and electromagnetic technologies

Radiation Oncology, 2017
Background Motion monitoring is essential when treating non-static tumours with pencil beam scanned protons. 4D medical imaging typically relies on the detected body surface displacement, considered as a surrogate of the patient's anatomical changes, a ...
Giovanni Fattori, Sairos Safai, Pablo Fernández Carmona, Marta Peroni, Rosalind Perrin, Damien Charles Weber, Antony John Lomax   +6 more
doaj   +1 more source

Verification of an independent dose calculation method for portal-specific QA of proton and carbon ion beams

Radiation Medicine and Protection, 2022
Objective: To verify the accuracy of an independent dose calculation method, as incorporated into an in-house developed treatment planning system (TPS), for performing quality assurance of dose distributions delivered to a water phantom planned by a ...
Michael F. Moyers, Qianxia Wang, Yu Deng, Hongliang Chen, Zhi Chen, Xiaoli Liu, Nicki Schlegel, Jie Li, Zhuangming Shen, James Lin, Pablo Yepes   +10 more
doaj   +1 more source

Prioritization of Proton Patients in the COVID-19 Pandemic: Recommendations from The New York Proton Center [PDF]

International Journal of Particle Therapy, 2020
It has been well documented from the early days of the 2019 novel coronavirus (COVID19) pandemic that patients with a diagnosis of cancer are not only at higher risks of contracting a COVID-19 infection but also at higher risks of suffering severe, and ...
Arpit M. Chhabra, J. Isabelle Choi, Shaakir Hasan, Robert H. Press, Charles B. Simone   +4 more
doaj   +1 more source