Journal of radiosurgery and SBRT最新文献

{"title":"Intra-fractional corrections and clinical outcomes in frameless image-guided radiosurgery for trigeminal neuralgia.","authors":"Wei-Hsien Hou, Michelle B Chen, Rachel Chou, Allan Y Chen","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>Precision targeting is crucial to successful stereotactic radiosurgery for trigeminal neuralgia (TGN). We investigated the impact of intra-fractional 6-dimensional corrections during frameless image-guided radiosurgery (IGRS) for pain outcome in TGN patients.</p><p><strong>Materials and methods: </strong>A total of 41 sets of intra-fractional corrections from 35 patients with TGN treated by frameless IGRS from 2009 to 2013 were retrospectively studied. For each IGRS, the intra-fractional 6-dimensional shifts were conducted at 6 couch angles. Clinical pain outcome was recorded according the Barrow Neurological Institute (BNI) 5-points score. The relationship in 6-dimensional corrections and absolute translational distances between patients with pain relief score points <2 versus ≥2 were analyzed.</p><p><strong>Results: </strong>The absolute mean lateral, longitudinal, and vertical translational shifts were 0.46 ± 0.15 mm, 0.36 ± 0.16 mm and 0.21 ± 0.08 mm, respectively, with 97% of translational shifts being within 0.7 mm. The absolute mean lateral (pitch), longitudinal (roll), and vertical (yaw) rotational corrections are 0.33 ± 0.24°, 0.18 ± 0.09°, and 0.27 ± 0.15°, respectively, with 97% of rotational corrections being within 0.6°. The median follow-up duration for pain outcome was 26 months after IGRS. The average calculated absolute shift for patients with pain relief <2 and ≥2 BNI points, were 0.228 ± 0.008 mm and 0.259 ± 0.007 mm, respectively. There was no statistically significant difference in the translational shifts, rotational corrections or absolute distances between these two patient groups.</p><p><strong>Conclusions: </strong>Our data demonstrate high spatial targeting accuracy of frameless IGRS for TGN with only nominal intra-fraction 6-dimensional corrections.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 2","pages":"135-143"},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288655/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stereotactic body radiation therapy is promising treatment for complex arteriovenous malformation of the neck: A case report.","authors":"Evelyn O Ilori, Timothy D Smile, Tom Masaryk, Abraham Levitin, Mark Bain, Sarah Stock, Jonathan Lee, Eric Lamarre, Neil M Woody, Shauna Campbell, Shlomo A Koyfman","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 2","pages":"177-179"},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288658/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Credentialing of stereotactic radiosurgery and stereotactic body radiation therapy programs for quality and safety: The Novalis Certified Program.","authors":"Timothy D Solberg, Nzhde Agazaryan, Mark De Ridder, Isabelle Germano, Naren Ramakrishna, James Robar, Ronald Warnick, Reinhard Wurm, Antonia Wurmseher","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The expectation of quality and safety is a fundamental tenet in all areas of healthcare, and a cornerstone of best practice is a process of continuous learning and continuous improvement. Independent audits and peer review of radiotherapy programs are an important mechanism for identifying process or technology gaps, for highlighting areas for improvement, and for incorporating within continuous improvement processes. In the field of radiotherapy, independent certification programs exist within various national and/or professional spheres, yet few focus specifically on specialty procedures such as radiosurgery or brachytherapy, despite several recommendations for such programs. In this manuscript we describe a specialized SRS/SBRT credentialing program founded on national/international standards and guidelines. We also present the results of an anonymous survey from institutions who have completed the program.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 2","pages":"157-164"},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288654/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proton versus photon radiotherapy for hepatocellular carcinoma: Current data and technical considerations.","authors":"Hannah J Roberts, Theodore S Hong","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Radiation is an accepted standard of care for unresectable hepatocellular carcinoma (HCC), and while photon radiation is the current standard, the use of proton beam radiotherapy (PBT) is an active area of investigation given its ability to better spare uninvolved liver. Patients with HCC typically have background liver disease and many patients die of their underlying liver function in the absence of tumor progression. Early photon-based series showed promising rates of local control however the risk of non-classic radiation induced liver disease (RILD) remains relatively high and may be associated with poorer outcomes. There is a theoretical advantage to PBT in its ability to spare uninvolved liver parenchyma and potentially allow for further dose escalation. There are technical considerations for image guidance, respiratory motion management, and conformality to both PBT and photon radiotherapy that are critical to optimizing each modality. Whether the use of PBT affects clinical outcomes is the subject of the ongoing NRG Oncology GI003 trial, that randomizes patients with HCC to protons or photons. This article reviews the technical differences and literature on individual outcomes for PBT and photon radiation as well as the available comparative data.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"9-16"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681146/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stereotactic body proton therapy for non-small cell lung cancer: Clinical indications and recommendations.","authors":"Matthew T McMillan, Mingle Kang, Annemarie F Shepherd, Wei Liu, Liyong Lin, Haibo Lin, Charles B Simone","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Stereotactic body radiation therapy (SBRT) has emerged as a standard treatment approach for early-stage lung cancer and intrathoracic oligometastatic or oligoprogressive disease. While local control is often excellent with this modality when delivered with photon therapy, toxicities for select patients can be significant. Proton therapy offers a unique opportunity to widen the therapeutic window when treating patients with thoracic malignancies requiring or benefitting from ultra-high doses per fraction. Thoracic proton SBRT may be particularly beneficial in cases requiring dose escalation, for tumors >5 cm, for central or ultra-central tumors, for reirradiation, in patients with interstitial lung diseases, and when combining radiation with immunotherapy. These clinical indications are detailed, along with supporting literature and clinical recommendations. Other considerations, future directions and potential benefits of proton SBRT, including sparing lymphocytes, when delivered as intensity-modulated proton therapy or as FLASH, and for the treatment of locally advanced non-small cell lung cancer or in patients with homologous recombination repair deficiencies, are also discussed.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"17-32"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681144/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proton stereotactic body radiation therapy as a new treatment regimen: Technical development and limitation with initial clinical experience.","authors":"Liyong Lin, Fang Fang Yin, Kristin A Higgins, Samuel Ryu, Charles B Simone","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"1"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681145/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in treatment planning and management for the safety and accuracy of lung stereotactic body radiation therapy using proton pencil beam scanning: Simulation, planning, quality assurance, and delivery recommendations.","authors":"Minglei Kang, J Isabelle Choi, Kevin Souris, Jun Zhou, Gang Yu, Annemarie F Shepherd, Nitin Ohri, Stanislav Lazarev, Liyong Lin, Haibo Lin, Charles B Simone","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This study presents the clinical experiences of the New York Proton Center in employing proton pencil beam scanning (PBS) for the treatment of lung stereotactic body radiation therapy. It encompasses a comprehensive examination of multiple facets, including patient simulation, delineation of target volumes and organs at risk, treatment planning, plan evaluation, quality assurance, and motion management strategies. By sharing the approaches of the New York Proton Center and providing recommendations across simulation, treatment planning, and treatment delivery, it is anticipated that the valuable experience will be provided to a broader proton therapy community, serving as a useful reference for future clinical practice and research endeavors in the field of stereotactic body proton therapy for lung tumors.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"53-62"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681141/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges and opportunities in stereotactic body proton radiotherapy of liver malignancies.","authors":"Heng Li, Rachel Ger, Amol Kumar Narang, Hao Chen, Jeffrey Meyer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Stereotactic body proton radiotherapy (SBPT) has the potential to be an effective tool for treating liver malignancies. While proton therapy enables near-zero exit dose and could improve normal tissue sparing, including liver and other surrounding structures, there are challenges in implementing the SBPT technique for proton therapy, including respiratory motion, range uncertainties, dose regimen, treatment planning, and image guidance. This article summarizes the technical and clinical challenges facing SBPT, along with the potential benefits of SBPT for liver malignancies. The clinical implementation of the technique is also described for the first six patients treated at the Johns Hopkins Proton Therapy Center using liver SBPT.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"83-90"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681149/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proton beam stereotactic body radiotherapy and hypofractionated therapy with pencil beam scanning is safe and effective for advanced hepatocellular carcinoma and intrahepatic cholangiocarcinoma: A single center experience.","authors":"Alexander H Yang, Nathalie H Urrunaga, Osman Siddiqui, Angela Wu, Matthew Schliep, Sina Mossahebi, Kirti Shetty, William F Regine, Jason K Molitoris, Zurabi Lominadze","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Proton beam therapy (PBT) is a non-surgical treatment that spares adjacent tissues compared to photon radiation and useful for Hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA). We present a single center experience in HCC and iCCA treated with Pencil Beam Scanning (PBS) PBT.</p><p><strong>Methods: </strong>Forty-four consecutive patients (22 patients in each group) receiving PBT were included and reviewed. PBT was delivered with hypofractionated or stereotactic body radiation therapy (SBRT) using PBS. Tumor size was approximated by clinical target volume (CTV). Outcomes were evaluated with Kaplan-Meier and liver toxicity was determined by MELD-Na and albumin-bilirubin (ALBI) grade.</p><p><strong>Results: </strong>Median follow up was 38.7 months, fourteen (35%) had multifocal disease and median CTV was 232.5cc. Four (9%) and 40 (91%) patients received SBRT and hypofractionated radiation, respectively. Two year overall survival was statistically higher for HCC (entire group: 68.9% months [95% CI: 61.3 - 76.3%]; iCCA: 49.8% [95% CI: 38.5% - 61.1%]; HCC: 89.4% [95% CI: 82.3 - 96.5%]; P <0.005). There was no statistical difference in progression-free survival or freedom from local failure. Biologically Equivalent Dose (BED) was greater than or equal to 80.5Gy in 37 (84%) patients. All iCCA patients had stable or improved ALBI grade following treatment. ALBI grade was stable in 83% of HCC patients and average MELD-Na score remained stable. Tumor size, pretreatment liver function, and total radiation dose were not associated with liver toxicity.</p><p><strong>Conclusions: </strong>PBT for unresectable HCC and iCCA is safe and effective, even for large and multifocal tumors. Liver function was preserved even in those with baseline cirrhosis in this advanced population with large tumors.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"43-52"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681150/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proton liver stereotactic body radiation therapy: Treatment techniques and dosimetry feasibility from a single institution.","authors":"Jun Zhou, Minglei Kang, Yinan Wang, Kristin A Higgins, Charles B Simone, Pretesh Patel, Mark W McDonald, Liyong Lin, Duncan Bohannon","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the resulting dosimetry characteristics of simulation and planning techniques for proton stereotactic body radiation therapy (SBRT) of primary and secondary liver tumors.</p><p><strong>Methods: </strong>Consecutive patients treated under volumetric daily image guidance with liver proton SBRT between September 2019 and March 2022 at Emory Proton Therapy Center were included in this study. Prescriptions ranged from 40 Gy to 60 Gy in 3- or 5-fraction regimens, and motion management techniques were used when target motion exceeded 5 mm. 4D robust optimization was used when necessary. Dosimetry evaluation was conducted for ITV V100, D99, Dmax, and liver-ITV mean dose and D700cc. Statistical analysis was performed using independent-samples Mann-Whitney U tests.</p><p><strong>Results: </strong>Thirty-six tumors from 29 patients were treated. Proton therapy for primary and secondary liver tumors using motion management techniques and robust optimization resulted in high target coverage and low doses to critical organs. The median ITV V100% was 100.0%, and the median ITV D99% was 111.3%. The median liver-ITV mean dose and D700cc were 499 cGy and 5.7 cGy, respectively. The median conformity index (CI) was 1.03, and the median R50 was 2.56. Except for ITV D99% (primary 118.1% vs. secondary 107.2%, p = 0.005), there were no significant differences in age, ITV volume, ITV V100%, ITV maximum dose, liver-ITV mean dose, or D700cc between primary and secondary tumor groups.</p><p><strong>Conclusion: </strong>The study demonstrated that proton therapy with motion management techniques and robust optimization achieves excellent target coverage with low normal liver doses for primary and secondary liver tumors. The results showed high target coverage, high conformality, and low doses to the liver.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"9 1","pages":"33-42"},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681147/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138460586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}