{"title":"Field output correction factors of stereotactic cones for a diode detector: Dependence on cone size, measurement setup, reference field size and photon energy.","authors":"Yongsook C Lee, Yongbok Kim","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This study investigated if field output correction factors (FOCFs) of Varian stereotactic cones for Edge detectorTM had dependence on cone size, measurement setup, reference field size and/or photon energy. Field output factors (FOFs) of stereotactic cones were measured at three depths (1.5 cm, 5 cm and 10 cm) in two different setups (source-to-surface distance (SSD) and source-to-axis distance (SAD)) with two photon energies (6 MV and 6 MV flattening filter free) using the Edge detector and Exradin<sub>®</sub> W2 scintillator. Two reference fields (10 × 10 cm<sup>2</sup> and 4 × 4 cm<sup>2</sup>) were chosen. FOCFs for the Edge detector were determined by calculating FOF<sub>W2</sub>/FOF<sub>Edge</sub> and compared among cones and between depths, setups, reference fields and energies. It is concluded that FOCFs for the Edge detector have dependence on cone size, SSD/SAD setup and energy for small cones, but do not have dependence on depth and reference field size.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 2","pages":"127-136"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9489070/pdf/rsbrt-8-127.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10451050","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 treatment by deep inspiratory breath hold in a patient with permanent tracheostomy - Technical solution and clinical implementation - A case report.","authors":"Sasmita Priyadarshini Sahu, Panomali Dayakar Reddy, Susovan Banerjee, Deepak Gupta, Shyam Singh Bisht, Amarendra Amar, Tejinder Kataria","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 2","pages":"155-157"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9489074/pdf/rsbrt-8-155.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10464444","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":"ISRS CONGRESS, NEW YORK CITY, USA, MAY 12-15, 2024.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 4","pages":"325"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10322176/pdf/rsbrt-8-325.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9862177","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}
Federico Ampil, Anthony Sin, Donald Smith, Troy Richards
{"title":"GammaKnife radiosurgery for Fisch-classified jugulotympanic paragangliomas: Review of the measures and timing of treatment success.","authors":"Federico Ampil, Anthony Sin, Donald Smith, Troy Richards","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Jugulotympanic paraganglioma (JTPG), a benign slow-growing neoplasm in the skull base with a tendency to be locally invasive, poses a treatment challenge because of its proximity to nearby neurovascular structures. The authors describe 11 patents with 12 Fisch-classified JTPGs treated with GammaKnife radiosurgery (GKRS) during a 12-year period. The observed rates of subjective improvement and tumor control were 80% and 83%, respectively. Among the individuals living longer than 5 years, tumor growth developed at 77 and 180 months after radiosurgery in two patients. Treatment-related toxicity or radiation oncogenesis was not observed. GKRS seems to be a valid treatment option for all Fisch designated skull base glomus tumors. Life-long follow-up of these patients is necessary.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 3","pages":"211-215"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9970742/pdf/rsbrt-8-211.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10830188","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}
Purushotham Ramanathan, Georgios Mantziaris, Stylianos Pikis, Lena Young, Chloe Dumot, Jason Sheehan
{"title":"Stereotactic radiosurgery for sellar solitary fibrous tumors: Case report and literature review.","authors":"Purushotham Ramanathan, Georgios Mantziaris, Stylianos Pikis, Lena Young, Chloe Dumot, Jason Sheehan","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 2","pages":"159-163"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9489078/pdf/rsbrt-8-159.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10464443","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}
Raj Singh, Prabhanjan Didwania, Eric J Lehrer, Joshua D Palmer, Daniel M Trifiletti, Jason P Sheehan
{"title":"Repeat stereotactic radiosurgery for locally recurrent brain metastases previously treated with stereotactic radiosurgery: A systematic review and meta-analysis of efficacy and safety.","authors":"Raj Singh, Prabhanjan Didwania, Eric J Lehrer, Joshua D Palmer, Daniel M Trifiletti, Jason P Sheehan","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objectives: </strong>To perform a systematic review and meta-analysis of outcomes for patients with locally recurrent brain metastases treated with a repeat course of stereotactic radiosurgery (rSRS).</p><p><strong>Method: </strong>Primary outcomes were 1-year local control(LC) and radionecrosis (RN). Secondary outcomes were 1-year overall survival (OS) and 1-year distant brain control (DBC). Weighted random effects meta-analyses utilizing the DerSimonian and Laird methods were conducted to characterize summary effect sizes. Mixed effects regression models were utilized to analyze potential correlations between prognostic factors and outcomes.</p><p><strong>Results: </strong>In total, 347 patients with 462 brain metastases treated with rSRS were included. Estimated 1-year LC, OS, and DBC rates were 69.0% (95% CI: 61.0-77.0%), 49.7% (95% CI: 28.9-70.6%), and 41.6% (95% CI: 33.0-50.4%), respectively. The estimated RN rate was 16.1% (95% CI: 6.3-25.9%). Every 1 Gy increase in prescription dose was estimated to result in roughly 5% increase in 1-year LC (p = 0.14).</p><p><strong>Conclusions: </strong>rSRS was well-tolerated with reasonable 1-year LC and OS. Dose escalation may result in improved LC.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 1","pages":"1-10"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8930057/pdf/rsbrt-8-10.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10516143","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}
Rashad Rzazade, Ngoc T Pham, Menekse Turna, Mehmet Dogu Canoglu, Esra Kucukmorkoc, Kezban Berberoglu, Hale Basak Caglar
{"title":"Stereotactic body radiotherapy in patients with adrenal gland metastases of oligometastatic and oliogoprogressive lung cancer.","authors":"Rashad Rzazade, Ngoc T Pham, Menekse Turna, Mehmet Dogu Canoglu, Esra Kucukmorkoc, Kezban Berberoglu, Hale Basak Caglar","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the efficacy and safety of stereotactic body radiotherapy (SBRT) in patients with adrenal gland metastasis (AGM) of oligometastatic lung cancer.</p><p><strong>Methods: </strong>Between June 2013 and May 2021, 44 patients with oligometastatic lung cancer (51 AGMs) were treated with SBRT. Forty-six (90%) lesions received a biological effective dose (BED<sub>10</sub>, α/β = 10) of 100 Gy. The primary endpoint was local control (LC). Local control (LC), overall survival (OS), and progression-free survival (PFS) curves were calculated by the Kaplan-Meier method.</p><p><strong>Results: </strong>The median follow-up was 23 months. The most common histology was non-small cell lung cancer (88.6%). The 1- and 2-year LC rates were both 95% and 91%, respectively. Overall survival was better in patients with solitary AGMs in univariate analysis.</p><p><strong>Conclusion: </strong>This study demonstrated that SBRT with higher BED is associated with satisfactory LC and low toxicity rates in patients with AGM of oligometastatic lung cancer.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 4","pages":"275-282"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10322168/pdf/rsbrt-8-275.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10164552","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}
Sujay Rajkumar, Yun Liang, Matthew J Shepard, Richard Williamson, Alexander Yu, Stephen M Karlovits, E Wegner Rodney
{"title":"Resection cavity dynamics and optimal timing of adjuvant stereotactic radiosurgery for resected brain metastases.","authors":"Sujay Rajkumar, Yun Liang, Matthew J Shepard, Richard Williamson, Alexander Yu, Stephen M Karlovits, E Wegner Rodney","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>Optimal timing of SRS after surgical resection of brain metastases (BMs) remains debated but is generally advocated to occur within 4 weeks of surgery to account for cavity remodeling. Our study assesses this recommendation by examining cavity dynamics and any downstream effects on outcome.</p><p><strong>Methods: </strong>Post-operative MRIs were used to compare target lesion volumes to target volume at time of SRS. Spearman's analysis identified a relationship between the time to SRS (ttSRS) and target remodeling. The Mann-Whitney-U test compared median remodeling between groups receiving standard (≤4 weeks) and late (>4 weeks) adjuvant SRS. Kaplan Meier functions estimated probabilities of local recurrence (LR) and survival (OS). A Cox proportional hazards model (CPH) identified predictors of OS, LR, and leptomeningeal disease (LMD).</p><p><strong>Results: </strong>Median ttSRS was 32 days (3-72). A positive correlation exists when comparing ttSRS to reduction in cavity volume (0-10 weeks; p = 0.01) with no difference in median cavity remodeling between standard and late SRS groups. OS and LR rates were respectively 53.3% and 70.2% at 12 months with no difference in OS (p = 0.16) or LR (p = 0.54) between standard and late SRS groups. Subtotal resection predicted LMD (HR: 6.37; p = 0.03). No grade 3 or higher toxicity was seen in follow-up.</p><p><strong>Conclusion: </strong>Resection cavities may continue to shrink well after resection. There is no significant difference in OS or LR based on ttSRS, however, treatment factors such as the extent of resection may account for outcomes such as LMD.</p>","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 4","pages":"247-255"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10322174/pdf/rsbrt-8-247.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10164553","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}
Riccardo Lavezzo, Salima Magrini, Marta Rossetto, Irene Coati, Angelo P Dei Tos, Matilde Cazzagon, Nicola Cavasin, Paolo M Polloniato, Anna D'Amico, Michele Longhi, Francesco Sala, Antonio Nicolato
{"title":"First case of posterior cranial fossa myopericytoma treated with a combined microsurgery and stereotactic radiosurgery approach: Case report and literature review.","authors":"Riccardo Lavezzo, Salima Magrini, Marta Rossetto, Irene Coati, Angelo P Dei Tos, Matilde Cazzagon, Nicola Cavasin, Paolo M Polloniato, Anna D'Amico, Michele Longhi, Francesco Sala, Antonio Nicolato","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 3","pages":"237-239"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9970739/pdf/rsbrt-8-237.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10830195","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}
Shikha Goyal, Kannan Periasamy, Shrawan Kumar Singh, Chandan Krushna Das
{"title":"Stereotactic body radiation therapy for metastatic urethral melanoma in a male patient.","authors":"Shikha Goyal, Kannan Periasamy, Shrawan Kumar Singh, Chandan Krushna Das","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":16917,"journal":{"name":"Journal of radiosurgery and SBRT","volume":"8 1","pages":"71-73"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8930051/pdf/rsbrt-8-73.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10807211","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}