229 results match your criteria rtog guidelines

Validating Modern NRG Oncology Pelvic Nodal and GFRU Prostate Bed Contouring Guidelines for Post-prostatectomy Salvage Radiation: A Secondary Analysis of the LOCATE Trial.

Int J Radiat Oncol Biol Phys 2021 May 17. Epub 2021 May 17.

Department of Radiation Oncology, Stritch School of Medicine, Loyola University Chicago. Electronic address:

Purpose: We used the patterns of recurrence on F-fluciclovine PET/CT in post-prostatectomy patients enrolled in the XXXX trial to evaluate how well the most recent NRG Oncology and Groupe Francophone de Radiothérapie Urologique (GFRU) contouring recommendations encompassed all sites of recurrence in the prostate fossa and pelvic nodes in comparison to former Radiation Therapy Oncology Group (RTOG) recommendations.

Methods: Patients with biochemically recurrent prostate cancer after radical prostatectomy with a positive finding within the prostate fossa or pelvic nodes on F-fluciclovine PET/CTs were identified from the XXXX patient population. Areas of gross disease were delineated. Read More

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Minimizing clearance issues with prone breast patients on Varian linear accelerators through isocenter placement.

Med Dosim 2021 Apr 23. Epub 2021 Apr 23.

Medical Dosimetry Program at the University of Wisconsin-La Crosse, La Crosse, WI 54601 USA.

The prone position is frequently used for breast irradiation in an effort to minimize dose to normal tissue and reduce skin toxicities. Immobilization required for prone breast irradiation can cause collision issues with the linear accelerator, disrupting treatment and negatively affecting the patient experience. The purpose of this retrospective study was to determine if an isocenter location guideline could be developed to prevent collisions with the prone breast immobilization device and gantry head, while still creating a clinically acceptable treatment plan. Read More

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Total body irradiation of bone marrow transplant using helical TomoTherapy with a focus on the quality of dose contribution at junction target volumes.

Strahlenther Onkol 2021 Apr 14. Epub 2021 Apr 14.

Department of Radiotherapy, Basavatarakam Indo American Cancer Hospital & Research Institute, Hyderabad, India.

Purpose: Total body irradiation (TBI) can be safely delivered on TomoTherapy (Accuray, Sunnyvale, CA, USA) in both pediatric and adult patients with proper imaging and planning despite the length constraint of 135 cm. To overcome this limitation, two CT (Computed Tomography) scans (CT1& CT2) are taken in patients above 135 cm in height. Adequate junction dose coverage is important in TBI. Read More

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Atlas of sentinel lymph nodes in early breast cancer using single-photon emission computed tomography: implication for lymphatic contouring.

Radiat Oncol J 2021 Mar 25;39(1):8-14. Epub 2021 Mar 25.

Department of Radiation Oncology & Nuclear Medicine, N.N. Petrov National Medical Research Center of Oncology, St. Petersburg, Russia.

Purpose: to determine the localization of sentinel lymph nodes (SLNs) in a large cohort of patients with breast cancer and validate the European Society for Therapeutic Radiology and Oncology (ESTRO), Radiation Therapy Oncology Group (RTOG), and Radiotherapy Comparative Effectiveness (RADCOMP) guidelines on regional lymph node clinical target volume (CTV-LN) delineation.

Materials And Methods: A total of 254 women with cT1-3N0-1M0 breast cancer underwent single-photon emission computed tomography (SPECT-CT) visualization of SLNs after intra- and peritumoral injection of 99mTc-radiocolloids. All SPECT-CT images were fused with reference simulation computed tomography. Read More

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Volumetric arc therapy: A viable option for right-sided breast with comprehensive regional nodal irradiation in conjunction with deep inspiration breath hold.

J Med Imaging Radiat Sci 2021 Mar 23. Epub 2021 Mar 23.

GenesisCare Victoria, Ringwood Private Hospital, VIC, Australia; Maroondah Hospital, Ringwood East, VIC, Australia. Electronic address:

Purpose: Deep inspiration breath hold (DIBH) is an innovative technique routinely used for left-sided breast radiotherapy to significantly reduce harmful dose to the heart and ipsilateral lung. Currently, there is scant literature exploring DIBH for right-sided whole breast and regional nodal irradiation (WB & RNI). The purpose of this study is to examine if DIBH produces a clinically significant reduction in organ at risk (OAR) dose for right-sided WB + RNI, whilst comparatively analysing the use of volumetric arc therapy (VMAT) versus tangential inverse modulated radiotherapy (t-IMRT). Read More

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[Ga]-DOTATATE PET/MRI as an adjunct imaging modality for radiation treatment planning of meningiomas.

Neurooncol Adv 2021 Jan-Dec;3(1):vdab012. Epub 2021 Jan 21.

Department of Radiology, Weill Cornell Medicine, New York, New York, USA.

Background: Meningiomas express high levels of somatostatin receptor 2 (SSTR2). SSTR2-targeted PET imaging with [Ga]-DOTATATE can aid with distinguishing residual meningioma from reactive changes in the postoperative setting. We present initial dosimetric analyses, acute events, and local control data utilizing [Ga]-DOTATATE PET/MRI-assisted target delineation for prospectively-treated intermediate-risk meningiomas. Read More

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January 2021

Outcomes for localized treatment of large cell neuroendocrine carcinoma of the lung in the United States.

Transl Lung Cancer Res 2021 Jan;10(1):71-79

Department of Radiation Oncology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA.

Background: Treatment paradigms for large cell neuroendocrine carcinoma (LCNEC) of the lung are based largely upon small retrospective studies and smaller prospective trials. It is unclear if these tumors behave like non-small cell lung cancer (NSCLC) or small cell lung cancer (SCLC). Data are lacking with regard to the role of radiotherapy (RT). Read More

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January 2021

Outcomes of Squamous Cell Carcinoma Anal Canal treated with IMRT-VMAT-based Concurrent Chemoradiation: a Single Institutional Experience.

J Gastrointest Cancer 2021 Jan 5. Epub 2021 Jan 5.

Department of Radiation Oncology, Dr. Ida B Scudder Cancer Centre, Christian Medical College, Vellore, Tamil Nadu, India.

Introduction: Chemoradiation is the standard of care in locally advanced carcinoma of the anal canal. However, the irregular surface and elective inguinal treatment poses a challenge for radiation planning and treatment with associated significant toxicity. In this retrospective study, we analysed the outcome of patients treated with intensity-modulated radiation therapy (IMRT) at our centre from 2012 to 2019. Read More

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January 2021

Plan quality assessment of modern radiotherapy delivery techniques in left-sided breast cancer: an analysis stratified by target delineation guidelines.

BJR Open 2020 11;2(1):20200007. Epub 2020 Dec 11.

Department of Radiation Oncology, Rajiv Gandhi Cancer Institute and Research Centre, Sector 5, Rohini, New Delhi, India.

Objective: This study compares planning techniques stratified by consensus delineation guidelines in patients undergoing whole-breast radiotherapy based on an objective plan quality assessment scale.

Methods: 10 patients with left-sided breast cancer were randomly selected, and target delineation for intact breast was performed using Tangent (RTOG 0413), ESTRO, and RTOG guidelines. Consensus Plan Quality Metric (PQM) scoring was defined and communicated to the physicist before commencing treatment planning. Read More

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December 2020

Single click automated breast planning with iterative optimization.

J Appl Clin Med Phys 2020 Nov 5;21(11):88-97. Epub 2020 Oct 5.

Icon Cancer Centres, Wahroonga, NSW, Australia.

Purpose: To present the development of an in-house coded solution for treatment planning of tangential breast radiotherapy that creates single click plans by emulating the iterative optimization process of human dosimetrists.

Method: One hundred clinical breast cancer patients were retrospectively planned with an automated planning (AP) code incorporating the hybrid intensity-modulated radiotherapy (IMRT) approach. The code automates all planning processes including plan generation, beam generation, gantry and collimator angle determination, open segments and dynamic IMRT fluence and calculations. Read More

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November 2020

Setting up a lung stereotactic body radiotherapy service in a tertiary center in Eastern India: The process, quality assurance, and early experience.

J Cancer Res Ther 2020 Jul-Sep;16(4):888-899

Department of Radiation Oncology, Tata Medical Center, Kolkata, West Bengal, India.

Context: Stereotactic body radiotherapy (SBRT) is increasingly being used for early-stage lung cancer and lung oligometastases.

Aims: To report our experience of setting up lung SBRT and early clinical outcomes.

Settings And Design: This was a retrospective, interventional, cohort study. Read More

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November 2020

NRG Oncology/RTOG Consensus Guidelines for Delineation of Clinical Target Volume for Intensity Modulated Pelvic Radiation Therapy in Postoperative Treatment of Endometrial and Cervical Cancer: An Update.

Int J Radiat Oncol Biol Phys 2021 02 6;109(2):413-424. Epub 2020 Sep 6.

Huntsman Cancer Institute/University of Utah, Salt Lake City, Utah.

Purpose: Accurate target definition is critical for the appropriate application of radiation therapy. In 2008, the Radiation Therapy Oncology Group (RTOG) published an international collaborative atlas to define the clinical target volume (CTV) for intensity modulated pelvic radiation therapy in the postoperative treatment of endometrial and cervical cancer. The current project is an updated consensus of CTV definitions, with removal of all references to bony landmarks and inclusion of the para-aortic and inferior obturator nodal regions. Read More

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February 2021

Role of 68-Ga-PSMA-PET/CT in pelvic radiotherapy field definitions for lymph node coverage in prostate cancer patients.

Radiother Oncol 2020 10 28;151:222-227. Epub 2020 Aug 28.

Department of Radiation Oncology, Hacettepe University, Faculty of Medicine, Ankara, Turkey.

Purpose: To evaluate the distribution of metastatic lymph nodes (LN) detected on Ga-PSMA-positron emission tomography/computed tomography (PET/CT) in treatment-naïve prostate cancer (PC) patients and to analyze the LN coverage rates of the pelvic fields defined in the GETUG trial and RTOG guidelines and a pelvic field extending superiorly from the L4/L5 interspace.

Materials And Methods: Ga-PSMA-PET/CT images obtained at diagnosis of 138 PC patients were retrospectively analyzed. The number and locations of Ga-PSMA-positive LNs were co-registered with one single-planning CT. Read More

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October 2020

Distribution pattern and prognosis of metastatic lymph nodes in cervical posterior to level V in nasopharyngeal carcinoma patients.

BMC Cancer 2020 Jul 17;20(1):667. Epub 2020 Jul 17.

Department of Radiation Oncology, Sichuan Cancer Hospital and Research Institute, University of Electronic Science and Technology of China, Chengdu, Sichuan Province, 610041, PR China.

Background: Lymph node metastasis in the cervical region posterior to level V (PLV) can occurs in patients with nasopharyngeal carcinoma (NPC), but the significance of lymph node metastasis in this region and the delineation of the radiotherapy target area have not been reported. We aimed to explore the distribution pattern and prognosis of metastatic lymph nodes in the PLV region in patients with NPC.

Methods: We retrospectively studied 605 cases of NPC diagnosed by pathological detection from December 2011 to November 2017. Read More

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PSMA-PET/CT-based Lymph Node Atlas for Prostate Cancer Patients Recurring After Primary Treatment: Clinical Implications for Salvage Radiation Therapy.

Eur Urol Oncol 2021 Feb 22;4(1):73-83. Epub 2020 May 22.

Department of Radiation Oncology, Technical University Munich (TUM), Munich, Germany; Department of Radiation Sciences (DRS), Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, Munich, Germany; Deutsches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany.

Background: Many patients experience recurrence of prostate cancer after radical prostatectomy.

Objective: The aim of this study was to visually analyze typical patterns of lymph node (LN) involvement for prostate cancer (PC) patients with biochemical recurrence after radical prostatectomy and lymphadenectomy by creating a color-coded heat map using gallium-68 prostate-specific membrane antigen positron emission tomography (Ga-PSMA-PET) imaging. Further, we evaluated which LNs were covered by the Radiation Therapy Oncology Group (RTOG) clinical target volume (CTV) contouring guidelines. Read More

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February 2021

First Experience in Korea of Stereotactic Partial Breast Irradiation for Low-Risk Early-Stage Breast Cancer.

Front Oncol 2020 29;10:672. Epub 2020 Apr 29.

Department of Radiation Oncology, Breast Cancer Center, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea.

Accelerated partial breast irradiation (A-PBI) in Korean women has been considered impracticable, owing to small breast volume and lack of high-precision radiotherapy experience. We present the first experience of stereotactic-PBI (S-PBI) with CyberKnife M6 to investigate feasibility of use and early toxicities in Korean women with early breast cancers. A total of 104 breasts receiving S-PBI at our institution between September 2017 and October 2018 were reviewed. Read More

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An Update on Regional Nodal Irradiation: Indication, Target Volume Delineation, and Radiotherapy Techniques.

Breast Care (Basel) 2020 Apr 9;15(2):128-135. Epub 2020 Apr 9.

Department of Radiotherapy and Radiation Oncology, University Hospital of the Friedrich Schiller University, Jena, Germany.

Background: Tremendous changes have occurred in the treatment of breast cancer. This paper reviews and unifies the available data on modern axillary management of breast cancer patients with focus on the target volume delineation for regional nodal irradiation according to the most important contouring guidelines, the European Society for Radiotherapy and Oncology (ESTRO) and the Radiation Therapy and Oncology Group (RTOG).

Summary: The use of extensive radiotherapy target volumes (level I, II, III, IV) is probably not necessary for all patients to reproduce the clinical benefit shown in the available randomized trials (EORTC, MA. Read More

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Comparison of Nodal Target Volume Definition in Breast Cancer Radiation Therapy According to RTOG Versus ESTRO Atlases: A Practical Review From the TransAtlantic Radiation Oncology Network (TRONE).

Int J Radiat Oncol Biol Phys 2020 07 22;107(3):437-448. Epub 2020 Apr 22.

Henri Mondor Breast Center and Department of Radiation Oncology, APHP; University of Paris-Est Creteil (UPEC) and INSERM Unit 955 - Team 21. Creteil, France. Electronic address:

Regional nodal irradiation has gained interest in recent years with the publication of several important randomized trials and the availability of more conformal techniques. Target volume delineation represents a critical step in the radiation planning process. Adequate coverage of the microscopic tumor spread to regional lymph nodes must be weighed against exposure of critical structures such as the heart and lungs. Read More

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Haute Couture or Ready-to-Wear? Tailored Pelvic Radiotherapy for Prostate Cancer Based on Individualized Sentinel Lymph Node Detection.

Cancers (Basel) 2020 Apr 10;12(4). Epub 2020 Apr 10.

Radiation Oncology Department, Institut de Cancérologie de l'Ouest, 44805 Nantes Saint-Herblain, France.

Prostate cancer (PCa) pelvic radiotherapy fields are defined by guidelines that do not consider individual variations in lymphatic drainage. We examined the feasibility of personalized sentinel lymph node (SLN)-based pelvic irradiation in PCa. Among a SLN study of 202 patients, we retrospectively selected 57 patients with a high risk of lymph node involvement. Read More

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Impact of volume of irradiation on survival and quality of life in glioblastoma: a prospective, phase 2, randomized comparison of RTOG and MDACC protocols.

Neurooncol Pract 2020 Jan 18;7(1):86-93. Epub 2019 Jul 18.

Department of Radiotherapy, PGIMER (Post-Graduate Institute of Medical Education and Research), Chandigarh, India.

Background: Though conformal partial-brain irradiation is the standard adjuvant treatment for glioblastoma, there is no consensus regarding the optimal volume that needs to be irradiated. European Organisation for Research and Treatment of Cancer (EORTC) and The University of Texas MD Anderson Cancer Center (MDACC) guidelines differ from the Radiation Therapy Oncology Group (RTOG) in their approach toward peritumoral edema, whereas RTOG and MDACC guidelines differ from EORTC in the concept of boost phase. A scarcity of randomized comparisons has resulted in remarkable variance in practice among institutions. Read More

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January 2020

Optimal Radiotherapy Dose in Anal Cancer: Trends in Prescription Dose and Association with Survival.

J Gastrointest Cancer 2021 Mar;52(1):229-236

Boston University School of Medicine, 72 East Concord Street, Boston, MA, 02118, USA.

Purpose: Definitive chemoradiotherapy represents a standard of care treatment for localized anal cancer. National Comprehensive Cancer Network guidelines recommend radiotherapy (RT) doses of ≥ 45 Gy and escalation to 50.4-59 Gy for advanced disease. Read More

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CT images with expert manual contours of thoracic cancer for benchmarking auto-segmentation accuracy.

Med Phys 2020 Jul 28;47(7):3250-3255. Epub 2020 Mar 28.

Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA.

Purpose: Automatic segmentation offers many benefits for radiotherapy treatment planning; however, the lack of publicly available benchmark datasets limits the clinical use of automatic segmentation. In this work, we present a well-curated computed tomography (CT) dataset of high-quality manually drawn contours from patients with thoracic cancer that can be used to evaluate the accuracy of thoracic normal tissue auto-segmentation systems.

Acquisition And Validation Methods: Computed tomography scans of 60 patients undergoing treatment simulation for thoracic radiotherapy were acquired from three institutions: MD Anderson Cancer Center, Memorial Sloan Kettering Cancer Center, and the MAASTRO clinic. Read More

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VMAT partial-breast irradiation: acute toxicity of hypofractionated schedules of 30 Gy in five daily fractions.

Clin Transl Oncol 2020 Oct 4;22(10):1802-1808. Epub 2020 Mar 4.

Radiotherapy Unit 1, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.

Purpose: To report acute toxicities in breast cancer (BC) patients (pts) recruited in a prospective trial and treated with accelerated partial-breast irradiation (APBI) using Volumetric Modulated Arc Therapy (VMAT) delivered with a hypofractionated schedule.

Methods: From March 2014 to June 2019, pts with early-stage BC (Stage I), who underwent breast conservative surgery (BCS), were recruited in a prospective study started at the National Cancer Institute of Milan. Pts received APBI with a hypofractionated schedule of 30 Gy in five daily fractions. Read More

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October 2020

Definition of Internal Mammary Node Target Volume Based on the Position of the Internal Mammary Sentinel Lymph Nodes Presented on SPECT/CT Fusion Images.

Front Oncol 2019 31;9:1553. Epub 2020 Jan 31.

Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.

Mapping the distribution of internal mammary sentinel lymph nodes (IM-SLNs) presented on single photon emission computed tomography in conjunction with computed tomography (SPECT/CT) images to explore the value of IM-SLN to guide tailored clinical target volume (CTV) delineation of postoperative prophylactic IMNI. Ninety-seven patients who underwent preoperative lymphoscintigraphy by SPECT/CT and had imaging of IM-SLN were selected in this study. The imaging IM-SLNs on SPECT/CT of eligible patients were projected onto corresponding anatomical positions of a representative axial CT image. Read More

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January 2020

Hippocampus segmentation on noncontrast CT using deep learning.

Med Phys 2020 Jul 2;47(7):2950-2961. Epub 2020 Jun 2.

Beaumont Artificial Intelligence Research Laboratory, Beaumont Health Systems, Royal Oak, MI, USA.

Purpose: Accurate segmentation of the hippocampus for hippocampal avoidance whole-brain radiotherapy currently requires high-resolution magnetic resonance imaging (MRI) in addition to neuroanatomic expertise for manual segmentation. Removing the need for MR images to identify the hippocampus would reduce planning complexity, the need for a treatment planning MR imaging session, potential uncertainties associated with MRI-computed tomography (CT) image registration, and cost. Three-dimensional (3D) deep convolutional network models have the potential to automate hippocampal segmentation. Read More

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Evaluation of plan quality improvements in PlanIQ-guided Autoplanning.

Rep Pract Oncol Radiother 2019 Nov-Dec;24(6):533-543. Epub 2019 Sep 20.

Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India.

Aim: Philips recently integrated PlanIQ with Autoplan® in Pinnacle TPS (V16.2). The objective of the present work is to quantitatively demonstrate how this integration improves the plan quality. Read More

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September 2019

Incidental dose distribution to locoregional lymph nodes of breast cancer patients undergoing adjuvant radiotherapy with tomotherapy - is it time to adjust current contouring guidelines to the radiation technique?

Radiat Oncol 2019 Aug 1;14(1):135. Epub 2019 Aug 1.

Department of Radiation Oncology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, D-81675, Munich, Germany.

Purpose/objective(s): Along with breast-conserving surgery (BCS), adjuvant radiotherapy (RT) of patients with early breast cancer plays a crucial role in the oncologic treatment concept. Conventionally, irradiation is carried out with the aid of tangentially arranged fields. However, more modern and more complex radiation techniques such as IMRT (intensity-modulated radio therapy) are used more frequently, as they improve dose conformity and homogeneity and, in some cases, achieve better protection of adjacent risk factors. Read More

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Have we achieved adequate recommendations for target volume definitions in anal cancer? A PET imaging based patterns of failure analysis in the context of established contouring guidelines.

BMC Cancer 2019 Jul 29;19(1):742. Epub 2019 Jul 29.

Department of Radiation Oncology, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, Munich, Germany.

Background: There are different contouring guidelines for the clinical target volume (CTV) in anal cancer (AC) which vary concerning recommendations for radiation margins in different anatomical regions, especially on inguinal site. PET imaging has become more important in primary staging of AC as a very sensitive method to detect lymph node (LN) metastases. Using PET imaging, we evaluated patterns of LN spread, and examined the differences of the respective contouring guidelines on the basis of our results. Read More

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Patients' view of the differences in topical creams for radiation dermatitis prevention. A pilot study of cosmetic properties.

Rep Pract Oncol Radiother 2019 Jul-Aug;24(4):347-354. Epub 2019 Jun 6.

Dpt of Radiation Oncology, Hospital Universitari Sant Joan de Reus, Av. del Dr. Josep Laporte, 2, Reus 43204, Spain.

Aim: To investigate the feasibility of including patients' reports on the cosmetic properties of topical formulations for acute radiation dermatitis (ARD).

Background: No topical agent tested for acute radiation dermatitis (ARD) has proven to be better than any other, all achieving similar objective outcomes. No clear guidelines have therefore been established in clinics. Read More

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Mapping of local recurrence after pancreaticoduodenectomy for distal extrahepatic cholangiocarcinoma: implications for adjuvant radiotherapy.

Br J Radiol 2019 Aug 14;92(1100):20190285. Epub 2019 Jun 14.

4 Department of Radiology, Ewha Womans University College of Medicine, Seoul, Republic of Korea.

Objective: To generate a map of local recurrences after pancreaticoduodenectomy (PD) for patients with distal extrahepatic cholangiocarcinoma (DEHC) and to evaluate the adequate target volume coverage encompassing the majority of local recurrences when the clinical target volume (CTV) for pancreatic cancer was applied.

Methods: We retrospectively reviewed the records of DEHC patients who underwent pancreaticoduodenectomy and had postoperative CT scans acquired between 1991 and 2015 available. The sites of local recurrence were delineated on individual CT scans, and then, mapping was manually performed onto template CT images. Read More

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