Proton therapy physics (Second Edition)
Dayananda Shamurailatpam SharmaJournal of Medical Physics 2020 45(3):195-196 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Dayananda Shamurailatpam Sharma Source Type: research

Effect of smartphone light fluxes on cornea: A biophysical study
Conclusions: The obtained results indicate changes in physicochemical and morphological modifications in the cornea and insulin modifications after exposed to SPLF. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: PM Dongre Vinod D Jaiswal Suraj Singh Source Type: research

Assessment of regional pediatric diagnostic reference levels for panoramic radiography using dose area product
Conclusion: Based on the results of the present study, it was observed that there exists a wide difference in mean doses among the panoramic scanners. The variation in radiation doses between the clinics/hospitals and similar scanners suggests a large potential for optimization of panoramic procedures. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Amal Jose A Saravana Kumar KN Govindarajan P Manimaran Source Type: research

Influence of air gap under bolus in the dosimetry of a clinical 6 MV photon beam
Conclusions: The measured data can be used to predict the probable effect on therapeutic outcome due to the presence of inevitable air gaps between the bolus and the treatment surface. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Dilson Lobo Sourjya Banerjee Challapalli Srinivas Ramamoorthy Ravichandran Suman Kumar Putha PU Prakash Saxena Shreyas Reddy Johan Sunny Source Type: research

Gradient based elastic property reconstruction in digital image correlation elastography
Conclusion: Reconstruction results show the ability of the gradient reconstruction method to detect stiff internal inclusions in simulated and phantom data. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Alexandre Brazy Elijah Van Houten Source Type: research

Objective assessment of the quality and accuracy of deformable image registration
Conclusion: A number of error and distance measures showed the best performance among the tested measures. The evaluated measures might detect CT dataset differences with higher precision if the analysis is restricted to a smaller volume. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Ines-Ana Jurkovic Nikos Papanikolaou Sotirios Stathakis Neil Kirby Panayiotis Mavroidis Source Type: research

Dosimetric comparison of different planning techniques in left-sided whole-breast irradiation: A planning study
Conclusion: Dosimetric comparison in this study showed that tangential IMRT technique is superior in terms of target coverage, sparing of lung, heart, and right breast, and low-dose spillage control in the left-sided breast-only radiotherapy. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: L Nithya Vineeta Goel Deepti Sharma Karthik Vittal Nidhi Marjara Source Type: research

Dose calculation comparisons between three modern treatment planning systems
Conclusion: It could be concluded through this research that there can be differences in the calculation of dose across different TPSs. Although relatively small, these differences could become apparent when compared using DVH. These differences most likely arise from the different dose calculation algorithms used in each TPS. Monaco employs the MC allowing it to have much more detailed calculations that result in it being seen as the most accurate and the gold standard. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - October 13, 2020 Category: Physics Authors: Courtney Bosse Ganesh Narayanasamy Daniel Saenz Pamela Myers Neil Kirby Karl Rasmussen Panayiotis Mavroidis Niko Papanikolaou Sotirios Stathakis Source Type: research

Erratum: Superparamagnetic Iron Oxide-C595: Potential MR imaging contrast agents for ovarian cancer detection
Journal of Medical Physics 2020 45(2):141-141 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Source Type: research

Guidance on the personal monitoring requirements for personnel working in healthcare
KM GaneshJournal of Medical Physics 2020 45(2):139-140 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: KM Ganesh Source Type: research

Leadership and challenges in medical physics: A strategic and robust approach
Arun ChouguleJournal of Medical Physics 2020 45(2):136-138 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Arun Chougule Source Type: research

Khan & #39;s the physics of radiation therapy
Manoj Kumar SemwalJournal of Medical Physics 2020 45(2):134-135 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Manoj Kumar Semwal Source Type: research

Revision in standard operating procedures of radiation oncology department and quality assurance schedule under COVID-19 pandemic
Suresh Chaudhari, Sunil Dutt Sharma, Shyam Kishore ShrivastavaJournal of Medical Physics 2020 45(2):130-133 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Suresh Chaudhari Sunil Dutt Sharma Shyam Kishore Shrivastava Source Type: research

Simultaneous measurement of In vivo and transit mid-plane doses with ionization chambers in gynecological malignancy patients undergoing three-dimensional conformal radiotherapy
Conclusion: The fundamental importance of this study lies in simultaneous validation of delivered dose in real time with two methods. A study in this small number of patients has given the confidence to apply transit measurements for quality assurance on a routine basis as an accepted clinical dosimetry for the selected patients. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Putha Suman Kumar Challapalli Srinivas BM Vadhiraja Sourjya Banerjee R Shreyas PU Prakash Saxena Ramamoorthy Ravichandran Dilson Lobo Source Type: research

Monte carlo calculation of the energy spectrum of a 6 MeV electron beam using penetration and energy loss of positrons and electrons code
Conclusion: It was demonstrated that PENELOPE is an attractive and accurate tool for the obtaining of dosimetric parameters of a medical linear accelerator since it can reliably reproduce important clinical data such as the energy spectrum, depth dose, and dose profile. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Danny Giancarlo Apaza Veliz Jorge Homero Wilches Visbal Felipe Chen Abrego Jos & #233; Luis Vega Ram & #237;rez Source Type: research

Assessment of four scatter correction methods in In-111 SPECT imaging: A simulation study
Conclusion: The use of the proposed correction methods, by considering both the photopeak windows, leads to improve the image contrast with a reasonable level of image noise. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Mahsa Noori-Asl Source Type: research

Appraisal of deep-learning techniques on computer-aided lung cancer diagnosis with computed tomography screening
Conclusions: Thus, the proposed CNN models achieve efficient lung segmentation and two-dimensional nodule patch classification in CAD system for lung cancer diagnosis with CT screening. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: S Akila Agnes J Anitha Source Type: research

Study of asymmetric margins in prostate cancer radiation therapy using fuzzy logic
Conclusion: The advantage of using knowledge based fuzzy logic is that a practical limitation on the margin size is included in the model for limiting the dose received by the critical organs. It uses both physical and radiobiological data to optimize the required margin as per clinical requirement in real time or adaptive planning, which is an improvement on most margin models which mainly rely on physical data only. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Santosh Kumar Patnaikuni Sapan Mohan Saini Rakesh Mohan Chandola Pradeep Chandrakar Vivek Chaudhary Source Type: research

Evaluation of dose distribution and normal tissue complication probability of a combined dose of cone-beam computed tomography imaging with treatment in prostate intensity-modulated radiation therapy
Conclusions: This study demonstrated a method to evaluate a combined dose of CBCT and a treatment dose using the constructed system. The combined dose distribution revealed increases of <1% volume in the rectal and bladder doses and approximately 0.07% in the rectal NTCP. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Tetsuya Tomita Tomonori Isobe Yoshinobu Furuyama Hideyuki Takei Daisuke Kobayashi Yutaro Mori Toshiyuki Terunuma Eisuke Sato Hiroshi Yokota Takeji Sakae Source Type: research

Influence of cleaned-up commercial knowledge-based treatment planning on volumetric-modulated arc therapy of prostate cancer
Conclusions: The cleaned-up KBP model based on DVH and regression plots improved plan quality in the PTV–rectum overlap region. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Mikoto Tamura Hajime Monzen Kenji Matsumoto Kazuki Kubo Yoshihiro Ueda Tatsuya Kamima Masahiro Inada Hiroshi Doi Kiyoshi Nakamatsu Yasumasa Nishimura Source Type: research

Design, fabrication, and validation of a polymethyl methacrylate head phantom for dosimetric verification of cranial radiotherapy treatment plans
Conclusions: The dosimetric study reveals that head phantom can be used for routine pretreatment verification for the cranial RT, especially for stereotactic radiosurgery/RT as a part of patient-specific quality assurance. The presently fabricated and validated phantom is novel, versatile, and cost-effective, and many institutes can afford it. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: VS Shaiju Rajesh Kumar Debjani Phani KV Rajasekhar George Zacharia Saju Bhasi Raghuram K Nair Source Type: research

Characterization and performance evaluation of the first-proton therapy facility in India
Conclusion: The PT-system performed well within the expected accuracy level and consistent over a period of 8 months. The methodology and data presented here may help upcoming modern PT center during their crucial phase of commissioning. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Dayananda Sharma Shamurailatpam A Manikandan K Ganapathy MP Noufal Kartikeshwar C Patro T Rajesh R Jalali Source Type: research

Erratum: Superparamagnetic Iron Oxide-C595: Potential MR imaging contrast agents for ovarian cancer detection
Journal of Medical Physics 2020 45(2):141-141 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Source Type: research

Guidance on the personal monitoring requirements for personnel working in healthcare
KM GaneshJournal of Medical Physics 2020 45(2):139-140 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: KM Ganesh Source Type: research

Leadership and challenges in medical physics: A strategic and robust approach
Arun ChouguleJournal of Medical Physics 2020 45(2):136-138 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Arun Chougule Source Type: research

Khan & #39;s the physics of radiation therapy
Manoj Kumar SemwalJournal of Medical Physics 2020 45(2):134-135 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Manoj Kumar Semwal Source Type: research

Revision in standard operating procedures of radiation oncology department and quality assurance schedule under COVID-19 pandemic
Suresh Chaudhari, Sunil Dutt Sharma, Shyam Kishore ShrivastavaJournal of Medical Physics 2020 45(2):130-133 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Suresh Chaudhari Sunil Dutt Sharma Shyam Kishore Shrivastava Source Type: research

Simultaneous measurement of In vivo and transit mid-plane doses with ionization chambers in gynecological malignancy patients undergoing three-dimensional conformal radiotherapy
Conclusion: The fundamental importance of this study lies in simultaneous validation of delivered dose in real time with two methods. A study in this small number of patients has given the confidence to apply transit measurements for quality assurance on a routine basis as an accepted clinical dosimetry for the selected patients. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Putha Suman Kumar Challapalli Srinivas BM Vadhiraja Sourjya Banerjee R Shreyas PU Prakash Saxena Ramamoorthy Ravichandran Dilson Lobo Source Type: research

Monte carlo calculation of the energy spectrum of a 6 MeV electron beam using penetration and energy loss of positrons and electrons code
Conclusion: It was demonstrated that PENELOPE is an attractive and accurate tool for the obtaining of dosimetric parameters of a medical linear accelerator since it can reliably reproduce important clinical data such as the energy spectrum, depth dose, and dose profile. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Danny Giancarlo Apaza Veliz Jorge Homero Wilches Visbal Felipe Chen Abrego Jos & #233; Luis Vega Ram & #237;rez Source Type: research

Assessment of four scatter correction methods in In-111 SPECT imaging: A simulation study
Conclusion: The use of the proposed correction methods, by considering both the photopeak windows, leads to improve the image contrast with a reasonable level of image noise. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Mahsa Noori-Asl Source Type: research

Appraisal of deep-learning techniques on computer-aided lung cancer diagnosis with computed tomography screening
Conclusions: Thus, the proposed CNN models achieve efficient lung segmentation and two-dimensional nodule patch classification in CAD system for lung cancer diagnosis with CT screening. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: S Akila Agnes J Anitha Source Type: research

Study of asymmetric margins in prostate cancer radiation therapy using fuzzy logic
Conclusion: The advantage of using knowledge based fuzzy logic is that a practical limitation on the margin size is included in the model for limiting the dose received by the critical organs. It uses both physical and radiobiological data to optimize the required margin as per clinical requirement in real time or adaptive planning, which is an improvement on most margin models which mainly rely on physical data only. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Santosh Kumar Patnaikuni Sapan Mohan Saini Rakesh Mohan Chandola Pradeep Chandrakar Vivek Chaudhary Source Type: research

Evaluation of dose distribution and normal tissue complication probability of a combined dose of cone-beam computed tomography imaging with treatment in prostate intensity-modulated radiation therapy
Conclusions: This study demonstrated a method to evaluate a combined dose of CBCT and a treatment dose using the constructed system. The combined dose distribution revealed increases of <1% volume in the rectal and bladder doses and approximately 0.07% in the rectal NTCP. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Tetsuya Tomita Tomonori Isobe Yoshinobu Furuyama Hideyuki Takei Daisuke Kobayashi Yutaro Mori Toshiyuki Terunuma Eisuke Sato Hiroshi Yokota Takeji Sakae Source Type: research

Influence of cleaned-up commercial knowledge-based treatment planning on volumetric-modulated arc therapy of prostate cancer
Conclusions: The cleaned-up KBP model based on DVH and regression plots improved plan quality in the PTV–rectum overlap region. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Mikoto Tamura Hajime Monzen Kenji Matsumoto Kazuki Kubo Yoshihiro Ueda Tatsuya Kamima Masahiro Inada Hiroshi Doi Kiyoshi Nakamatsu Yasumasa Nishimura Source Type: research

Design, fabrication, and validation of a polymethyl methacrylate head phantom for dosimetric verification of cranial radiotherapy treatment plans
Conclusions: The dosimetric study reveals that head phantom can be used for routine pretreatment verification for the cranial RT, especially for stereotactic radiosurgery/RT as a part of patient-specific quality assurance. The presently fabricated and validated phantom is novel, versatile, and cost-effective, and many institutes can afford it. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: VS Shaiju Rajesh Kumar Debjani Phani KV Rajasekhar George Zacharia Saju Bhasi Raghuram K Nair Source Type: research

Characterization and performance evaluation of the first-proton therapy facility in India
Conclusion: The PT-system performed well within the expected accuracy level and consistent over a period of 8 months. The methodology and data presented here may help upcoming modern PT center during their crucial phase of commissioning. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - July 19, 2020 Category: Physics Authors: Dayananda Sharma Shamurailatpam A Manikandan K Ganapathy MP Noufal Kartikeshwar C Patro T Rajesh R Jalali Source Type: research

Investigation of different factors affecting the quality of spect images: A simulation study
Conclusion: The MC simulation is a suitable tool for investigation of different factors affecting the quality of SPECT images, essentially in the studies based on the energy spectrum, such as the evaluation of the scatter correction methods. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: Mahsa Noori-Asl Source Type: research

A method of high-resolution radiotherapy delivery fluences with a pair of fields with orthogonal collimator settings: A study on ten head-and-neck cancer patients
Conclusions: At the time of writing of this study, there were more than 12,000 medical linear accelerators in clinical use, and XMLC can prove itself useful wherever linac is equipped with MLC but cannot delivery latest techniques, such as volumetric modulated arc therapy. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: Stipe Galic Marin Kovacevic Ivan Lasic Hrvoje Brkic Dario Faj Source Type: research

Validation of PRIMO monte carlo model of clinac & #174;ix 6mv photon beam
Conclusions: This study shows that the research software PRIMO can be used as a treatment planning system-independent quality assurance and dose verification tool in daily clinical practice. Further validation will be performed with different energies, complex multileaf collimators fields, and with dynamic treatment fields. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: B Sarin B Bindhu B Saju Raguram K Nair Source Type: research

Development and validation of a matlab software program for decoding the treatment errors in real-time position management & #8482; Gating-generated breathing trace
Conclusion: The developed GUI gave the same and acceptable results for all regular profiles. These errors were due to the lag time of the linear accelerator with gating treatment. This program can be used as to quantifying the intrafraction “beam-on” errors in breathing trace with both mode of gating techniques for irregular breathing trace, and in addition, it is capable to convert phase-based gating parameters to amplitude-based gating parameters for treatment. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: Naveen Kumawat Anil Kumar Shrotriya Malhotra Singh Heigrujam Kartikeswar Patro Satendra Kumar Anil Kumar Bansal Ram Kishan Munjal Anil Kumar Anand Source Type: research

Dosimetric Comparison of treatment plans computed with finite size pencil beam and monte carlo algorithms using the incise & #8482; multileaf collimator-equipped cyberknife & #174; system
Conclusion: In this study, it was found that FSPB overestimates dose to inhomogeneous treatment sites. This indicates, the employment of MC algorithm in CK-MLC-based lung SABR treatment plans is strongly suggested. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: Kalpani Nisansala Udeni Galpayage Dona Charles Shang Theodora Leventouri Source Type: research

Volumetric arc therapy treatment plan dosimetry correction method to account patient weight loss during a course of radiation therapy
Conclusion: Image-guided radiation therapy process detects the weight loss, which affects the treatment plan's dose distribution and should be corrected. Applying the correction method described here keeps the patient dosimetry within 1% of the original plan, which is clinically acceptable. The process of plan dosimetry correction to address weight loss can be completed within 30 min without repeating imaging and planning process. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - March 12, 2020 Category: Physics Authors: Harold DSouza Henry Weatherburn Abhishek Dwivedi Tharmarnadar Ganesh Source Type: research

A primer on theory and operation of linear accelerators in radiation therapy
Challapalli SrinivasJournal of Medical Physics 2019 44(4):298-299 (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Challapalli Srinivas Source Type: research

Assessment of adult diagnostic reference levels for panoramic radiography in Tamil Nadu region
Conclusion: The present study suggests that further optimization can be achieved in many centers by the recruitment of professionally qualified radiographers and conducting periodic training programs on the optimization of exposure parameters. Considering this as the first study for the dental DRL assessment, further studies are suggested to establish national dental DRL in India. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Amal Jose A Saravana Kumar KN Govindarajan B Devanand N Elango Source Type: research

A dosimetric analysis of the rectal doses in intracavitary brachytherapy of carcinoma cervix: A prospective study from a single institute
Conclusion: The modified ICRU rectal point is easier to visualize than ICRU 38 method (100% vs. 80%) for dosimetry, but it underestimates the rectal doses when compared to ICRU 38 rectal point. There needs to be a correction factor applied (25% in our study for Henschke applicator) when evaluating the rectal doses calculated by rectal wire method, to reduce the rectal toxicity. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Aparna Suryadevara Anil Kumar Talluri Krishnam Raju Alluri E Vasundhara Sudhakar Kumar N V.N Madhusudhana Sresty Source Type: research

4 & #960; radiotherapy using a linear accelerator: A misnomer in violation of the solid geometric boundary conditions in three-dimensional Euclidean space
Conclusions: Present cantilever design of linear accelerator prevents achieving a 4π radian solid angle at any point in the patient. Even the most modern therapy machines like CyberKnife which has a robotic arm also cannot achieve 4π geometry. Maximum achievable solid angle under the highest allowable boundary condition(s) cannot exceed 2πc, which is restricted for only extremities such as foot and brain radiotherapy. For other parts of the body such as pelvis, thorax, and abdomen, the solid angle is reduced to 1/5th (maximum value) of the 4πc. To obtain a 4πc solid angle in a three-dimensional Euc...
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Biplab Sarkar Tharmarnadar Ganesh Anusheel Munshi Arjunan Manikandan Bidhu Kalyan Mohanti Source Type: research

The impact of positron emission tomography/computed tomography addition to contrast-enhanced computed tomography findings during radiation treatment planning of locally advanced carcinoma esophagus
Conclusions: PET-CT tremendously changes treatment plans by expanding the gross tumor volume and including regions which might otherwise have been missed on purely CT-based plans. Of the 50 patients, it changed the contouring and treatment planning of 35 patients and did not impact the remaining 15. Whether this translates into better long-term controls requires further validation by randomized controlled trials, which was not our present objective. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Sharad Bhatnagar Shweta Sharma Manoj Semwal Sankalp Singh Source Type: research

Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy
Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Daisuke Kobayashi Tomonori Isobe Kenta Takada Yutaro Mori Hideyuki Takei Hiroaki Kumada Satoshi Kamizawa Tetsuya Tomita Eisuke Sato Hiroshi Yokota Takeji Sakae Source Type: research

Characterization of the mixed radiation field produced by carbon and oxygen ion beams of therapeutic energy: A Monte Carlo simulation study
Conclusions: This result coupled with the higher RBE shows that it may be possible to use a lower fluence of oxygen ions to achieve the same therapeutic dose in the patient as that obtained with carbon ion therapy. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: CK Ying David Bolst Anatoly Rosenfeld Susanna Guatelli Source Type: research

Dose shadowing and prosthesis involvement for megavoltage photon In vivo diode dosimetry
Conclusion: On the basis of accuracy requirements in radiotherapy noting that a small underdose to tumors could yield a decrease in the probability of tumor control, the diode-induced beam perturbations in combination with prosthesis involvement in the photon fields may affect treatment outcome, as there would be a reduction in the prescribed target dose during treatment delivery. (Source: Journal of Medical Physics)
Source: Journal of Medical Physics - December 10, 2019 Category: Physics Authors: Nicholas Ade Dete Van Eeden F C. P. Du Plessis Source Type: research