Changing Trends in Radiotherapy for Glioblastoma Multiforme and Effects on Normal Tissue Doses by Kamuran İbiş, Canan Köksal, Uğur Akbaş, Musa Altun

“…Introduction:The aim of the study is to reveal the changing trends in radiotherapy (RT) for glioblastoma multiforme (GBM) from past to present and to show the changes in organs at risk (OARs) doses.Methods:We re-planned 10 GBM patients who were previously irradiated. …”
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Dosimetric Study Of 3dcrt And Imrt Techniques Of Localised Prostate Cancer Using Male Pelvic Phantom by Raof, Nursyatina Abdul

“…Dose measurements to the target was obtained from the thermoluminescent dosimeters (TLDs) and Gafchromic external beam therapy (EBT3) film while OARs dose measured with TLDs only. Points of interest were identified in phantom for TLDs placement with seventeen (17) holes to the prostate and eighty-three (83) holes distributed among the OARs. …”
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Enhancing Radiotherapy Workflow for Head and Neck Cancer with Artificial Intelligence: A Systematic Review by Ciro Franzese, Damiano Dei, Nicola Lambri, Maria Ausilia Teriaca, Marco Badalamenti, Leonardo Crespi, Stefano Tomatis, Daniele Loiacono, Pietro Mancosu, Marta Scorsetti

“…Background: Head and neck cancer (HNC) is characterized by complex-shaped tumors and numerous organs at risk (OARs), inducing challenging radiotherapy (RT) planning, optimization, and delivery. …”
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Craniospinal Irradiation of Pediatric Medulloblastoma, Dosimetric Comparison between Helical Tomotherapy, and Conventional Radiation Therapy by Mohamed Hegazy, Maamoun Shehadeh

“…HT decreased the mean and maximum dose to OAR, except for higher mean dose of larynx, oral cavity, pharynx, and comparable V5 of lungs. …”
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Uso de las reglas de Ottawa para medio pie y tobillo en un hospital de referencia en Perú by M.A. Palacios-Flores, J.F. Rodríguez-Cavani

“…Multicentric studies involving a larger sample and longer study time are necessary to protocolize OAR in emergency units.…”
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Radiation therapy in locally advanced pancreatic cancer with 75 Gy simultaneous integrated boost: a dosimetric feasibility study by ZHUANG Han, LING Chifang, WANG Jiazhou, HAN Xu, JIANG Rui, HU Weigang

“…Conclusion: In the treatment of LAPC using 75 Gy simultaneous integrated boost, both CO-IMRT and NC-IMRT can achieve excellent PTV coverage and meet the OAR constraints in all patients. Without affecting the quality of PTV coverage, NC-IMRT has more advantages in the dose distribution of OAR, which can better protect the OAR and reduce the toxicity to the gastrointestinal tract, liver and kidneys.…”
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Phantom-based Quality Assurance of a Clinical Dose Accumulation Technique Used in an Online Adaptive Radiation Therapy Platform by Borna Maraghechi, PhD, Thomas Mazur, PhD, Dao Lam, PhD, Alex Price, MSc, Lauren Henke, MD, MSCI, Hyun Kim, MD, Geoffrey D. Hugo, PhD, Bin Cai, PhD

“…Large disagreements were observed for OAR1 and OAR2 defined on the electron density phantom due to OARs having lower deformation priority over the target in addition to artificially large changes in position induced for these structures fraction-by-fraction. …”
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Segmentation stability of human head and neck cancer medical images for radiotherapy applications under de-identification conditions: Benchmarking data sharing and artificial intel... by Jaakko Sahlsten, Kareem A. Wahid, Enrico Glerean, Joel Jaskari, Mohamed A. Naser, Renjie He, Benjamin H. Kann, Antti Mäkitie, Clifton D. Fuller, Kimmo Kaski

“…Therefore, this study systematically investigated the impact of available defacing algorithms on HNC organs at risk (OARs).MethodsA publicly available dataset of magnetic resonance imaging scans for 55 HNC patients with eight segmented OARs (bilateral submandibular glands, parotid glands, level II neck lymph nodes, level III neck lymph nodes) was utilized. …”
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Biophysical Analysis of Acute and Late Toxicity of Radiotherapy in Gastric Marginal Zone Lymphoma—Impact of Radiation Dose and Planning Target Volume by Gabriele Reinartz, Andrea Baehr, Christopher Kittel, Michael Oertel, Uwe Haverkamp, Hans Th. Eich

“…These were used to anticipate adverse events for OAR. Literature parameters were used to estimate high-grade toxicities of OAR. …”
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Clinical outcomes of MR-guided adrenal stereotactic ablative radiotherapy with preferential sparing of organs at risk by Famke L. Schneiders, Claire van Vliet, Nicolas Giraud, Anna M.E. Bruynzeel, Ben J. Slotman, Miguel A. Palacios, Suresh Senan

“…Some trials have specified that organ at risk (OAR) dose constraints should take priority over target coverage. …”
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Adaptive radiotherapy for breast cancer by C. De-Colle, A. Kirby, N. Russell, S.F. Shaitelman, A. Currey, E. Donovan, E. Hahn, K. Han, C.N. Anandadas, F. Mahmood, E.L. Lorenzen, D. van den Bongard, M.L. Groot Koerkamp, A.C. Houweling, M. Nachbar, D. Thorwarth, D. Zips

“…Exploiting ART routinely in clinic may result in smaller target volumes and better OAR sparing, which may lead to reduction of acute as well as late toxicities. …”
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A Power-Assisted Cart with the Optimal Assistance Ratio and Disturbance Observer-Based Methods for Walking Assistance Applications by Xianglong Wan, Jiaxin Ma, Yichi Zhang, Takahiro Endo, Fumitoshi Matsuno

“…The optimal assistance ratio (OAR) and disturbance observer-based (DOB) methods properly adjust the motor output of the cart with high operational efficiency in response to changes in the environment. …”
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A dynamic programming approach to adaptive fractionation by Ramakrishnan, Jagdish, Craft, David, Bortfeld, Thomas, Tsitsiklis, John N.

“…In general, the decrease in dose to the OAR is more pronounced when: (i) we have a high probability of large tumor–OAR distances, (ii) we use many fractions (as in a hyper-fractionated setting) and (iii) we allow large daily fraction size deviations. …”
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تطوير وتقييم تقنية جديدة في المعالجة الشعاعية المطابقة ثلاثية الأبعاد 3D-CRT من أجل تخطيط المعالجة الشعاعية لأورام المحور العصبي CSI... by د. ماجدة نحيلي, محمد حمودي

“… تم في هذا البحث تطوير تقنية جديدة لمعالجة أورام كامل المحور العصبي CSI في المعالجة الشعاعية المطابقة ثلاثية الأبعاد 3D-CRT باستعمال الحزمة النصفية وحقل ضمن حقل FIF بهدف تحسين توزع الجرعة في منطقة الورم PTV وتقليل جرعة الأعضاء المتوقع تضررها OAR. تم تقييم هذه التقنية بمقارنتها مع التقنية التقليدية من خلال دراسة منحنيات جرعة حجم DVH وحساب مؤشرات الجودة وجرعة OAR. …”
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Streamlined Schemes for Dosimetry of ¹⁷⁷Lu-Labeled PSMA Targeting Radioligands in Therapy of Prostate Cancer by Jens Kurth, Martin Heuschkel, Alexander Tonn, Anna Schildt, Oliver W. Hakenberg, Bernd J. Krause, Sarah M. Schwarzenböck

“…(Background) Aim of this retrospective analysis was to investigate in mCRPC patients treated with [¹⁷⁷Lu]Lu-PSMA-617 whether the absorbed dose (AD) in organs at risk (OAR, i.e., kidneys and parotid glands) can be calculated using simplified methodologies with sufficient accuracy. …”
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Inter-Breath-Hold Geometric and Dosimetric Variations in Organs at Risk during Pancreatic Stereotactic Body Radiotherapy: Implications for Adaptive Radiation Therapy by Hamed Hooshangnejad, Devin Miles, Colin Hill, Amol Narang, Kai Ding, Sarah Han-Oh

“…As anatomical variation is of great concern, motion management techniques, such as DIBH, are commonly used to minimize OARs toxicities; however, the variability between DIBHs has not been well studied. …”
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Full‐scale attention network for automated organ segmentation on head and neck CT and MR images by Zhiqiang Zhong, Lian He, Changxiu Chen, Xingli Yang, Li Lin, Ziye Yan, Mengqiu Tian, Ying Sun, Yinwei Zhan

“…Delineating organs‐at‐risk (OAR) is an essential step in radiotherapy, however, it is time‐consuming and prone to inter‐observer variation. …”
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SECP-Net: SE-Connection Pyramid Network for Segmentation of Organs at Risk with Nasopharyngeal Carcinoma by Zexi Huang, Xin Yang, Sijuan Huang, Lihua Guo

“…In the OAR segmentation of NPC, the sizes of the OAR are variable, and some of their volumes are small. …”
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Daily Head and Neck Treatment Assessment for Optimal Proton Therapy Planning Robustness by Leslie Chang, Sherif G. Shaaban, Emile Gogineni, Brandi Page, Harry Quon, Heng Li, Rachel Ger

“…The dose for the clinical target volume (CTV) and organs at risk (OAR) was compared to the expected robustness bands using 3.5% range uncertainty and 3 mm vs. 5 mm setup uncertainty. …”
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Dose-Volume Comparison of IMRT and PSPT Treatment Plans for Early-Stage Glottic Cancer by Takahiro Kato, PhD, Nobukazu Fuwa, MD, PhD, Masao Murakami, MD, PhD

“…Conclusion: PSPT for early-stage glottic cancer resulted in good target dose homogeneity and significantly spared the OARs as compared with the IMRT. PSPT is expected to be effective in reducing late effects and particularly useful for young people.…”
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