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https://www.readbyqxmd.com/read/28750452/mathematical-equation-for-precise-burr-hole-placement-in-stereotactic-deep-brain-stimulation-lead-placement
#1
Timur M Urakov, Jonathan R Jagid
No abstract text is available yet for this article.
July 27, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28749375/towards-fast-online-intrafraction-replanning-for-free-breathing-stereotactic-body-radiation-therapy-with-the-mr-linac
#2
Charis Kontaxis, Gijsbert H Bol, Bjorn Stemkens, Markus Glitzner, Fieke M Prins, Linda G W Kerkmeijer, Jan J W Lagendijk, Bas W Raaymakers
The hybrid MRI-radiotherapy machines, like the MR-linac (Elekta AB, Stockholm, Sweden) installed at the UMC Utrecht (Utrecht, The Netherlands), will be able to provide real-time patient imaging during treatment. In order to take advantage of the system's capabilities and enable online adaptive treatments, a new generation of software should be developed, ranging from motion estimation to treatment plan adaptation. In this work we present a proof of principle adaptive pipeline designed for high precision Stereotactic Body Radiation Therapy (SBRT) suitable for sites affected by respiratory motion, like Renal Cell Carcinoma (RCC)...
July 27, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28749172/no-differences-in-radiological-changes-after-3d-conformal-vs-vmat-based-stereotactic-radiotherapy-for-early-stage-non-small-cell-lung-cancer
#3
Serena Badellino, Jacopo Di Muzio, Giulia Schivazappa, Alessia Guarneri, Riccardo Ragona, Sara Bartoncini, Elisabetta Trino, Andrea Riccardo Filippi, Paolo Fonio, Umberto Ricardi
OBJECTIVES: To compare patterns of acute and late radiological lung injury following either 3D or image-guided VMAT stereotactic radiotherapy for stage I Non-Small-Cell Lung Cancer (NSCLC). METHODS: We included 148 patients from a prospective mono-institutional SBRT series (time interval 2004-2014), treated with prescription BED10 Gy (at 80%) in the range 100-120 Gy. The first 95 patients (2004-2010) were planned with 3D-CRT, with a stereotactic body frame. The second cohort (2010-2014) included 53 patients, planned with volumetric IMRT on a smaller PTV generated from a patient's specific ITV, with a frameless approach through cone-beam CT guidance...
July 27, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28746939/consistency-between-targets-delineated-by-angiography-computed-tomography-and-magnetic-resonance-imaging-in-stereotactic-radiosurgery-for-arteriovenous-malformation
#4
Yu-Jie Huang, Shih-Wei Hsu, Tsair-Fwu Lee, Jih-Tsun Ho, Wu-Fu Chen
BACKGROUND: Target identification is important for radiosurgery for arteriovenous malformations (AVMs). Targets defined by different imaging modalities may be inconsistent in practice. OBJECTIVES: The goal of this study is to review and analyze the consistency between targets defined by different imaging modalities in radiosurgery for AVMs. METHODS: From March 2007 to June 2011, AVM patients for radiosurgery whose targets were delineated by angiography/computed tomography (CT)/magnetic resonance imaging (MRI) were reviewed...
July 27, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28744192/macroanatomical-landmarks-featuring-junctions-of-major-sulci-and-fissures-and-scalp-landmarks-based-on-the-international-10-10-system-for-analyzing-lateral-cortical-development-of-infants
#5
Daisuke Tsuzuki, Fumitaka Homae, Gentaro Taga, Hama Watanabe, Mie Matsui, Ippeita Dan
The topographic relationships between the macroanatomical structure of the lateral cortex, including sulci and fissures, and anatomical landmarks on the external surface of the head are known to be consistent. This allows the coregistration of EEG electrodes or functional near-infrared spectroscopy over the scalp with underlying cortical regions. However, limited information is available as to whether the topographic relationships are maintained in rapidly developing infants, whose brains and heads exhibit drastic growth...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28743240/whole-brain-radiotherapy-versus-stereotactic-radiosurgery-for-4-10-brain-metastases-a-phase-iii-randomised-multicentre-trial
#6
Jaap D Zindler, Anna M E Bruynzeel, Daniëlle B P Eekers, Coen W Hurkmans, Ans Swinnen, Philippe Lambin
BACKGROUND: Maintenance of quality of life is the primary goal during treatment of brain metastases (BM). This is a protocol of an ongoing phase III randomised multicentre study. This study aims to determine the exact additional palliative value of stereotactic radiosurgery (SRS) over whole brain radiotherapy (WBRT) in patients with 4-10 BM. METHODS: The study will include patients with 4-10 BM from solid primary tumours diagnosed on a high-resolution contrast-enhanced MRI scan with a maximum lesional diameter of 2...
July 25, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28743133/lymphocytic-hypophysitis-successfully-treated-with-stereotactic-radiosurgery-case-report-and-review-of-the-literature
#7
Sandra Pekic, Vojislav Bogosavljevic, Selcuk Peker, Mirjana Doknic, Dragana Miljic, Marko Stojanovic, Milica Skender-Gazibara, Emilija Manojlovic Gacic, Vera Popovic, Milan Petakov
No abstract text is available yet for this article.
July 25, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28741887/linac-based-stereotactic-radiation-therapy-for-canine-non-lymphomatous-nasal-tumours-29-cases-2013-2016
#8
T L Gieger, M W Nolan
Twenty-nine dogs were treated with linac-based stereotactic radiation therapy (SRT) for non-lymphomatous nasal tumours. Only dogs with a follow-up time >365 days were included in this retrospective analysis. No dogs had evidence of distant metastasis at diagnosis. Treatment was planned and a total of 30 Gy in 3 daily 10 Gy fractions was delivered using intensity-modulation, cone-beam CT-based image guidance and a robotic treatment couch. Clinical signs improved in all cases. Nineteen dogs had CT scans 3-4 months post-SRT and all had partial or complete tumour response...
July 25, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28741749/clinical-outcomes-after-local-field-conformal-reirradiation-of-patients-with-retropharyngeal-nodal-metastasis
#9
Courtney Pollard, Theresa P Nguyen, Sweet Ping Ng, Steven J Frank, Adam S Garden, Gary B Gunn, Clifton D Fuller, Beth M Beadle, William H Morrison, Shah J Shah, He Wang, Sam Tung, Conjun Wang, Lawrence D Ginsberg, Mark E Zafereo, Erich M Sturgis, Shirley Y Su, Ehab Y Hanna, David I Rosenthal, Jack Phan
BACKGROUND: The purpose of this study was to present our experience with retropharyngeal node reirradiation using highly conformal radiotherapy (RT). METHODS: A retrospective screen of 2504 consecutively irradiated patients with head and neck malignancies between 2005 and 2015 identified 19 patients who underwent reirradiation for retropharyngeal node metastasis. Clinical and toxicity outcomes were assessed in these patients. RESULTS: Thirteen patients (68%) had squamous cell carcinoma...
July 25, 2017: Head & Neck
https://www.readbyqxmd.com/read/28741377/renal-cell-carcinoma-alternative-nephron-sparing-treatment-options-for-small-renal-masses-a-systematic-review
#10
Fieke M Prins, Linda G W Kerkmeijer, Anne A Pronk, Evert-Jan P A Vonken, Richard P Meijer, Axel Bex, Maurits M Barendrecht
<i>Background</i> The standard treatment of T1 renal cell carcinoma is (partial-) nephrectomy. For patients where surgery is not the treatment of choice, for example in the elderly, in case of severe comorbidity, inoperability or refusal of surgery, alternative treatment options are available. These treatment options include active surveillance, radiofrequency ablation, cryoablation, microwave ablation or stereotactic body radiotherapy. In the present overview, the efficacy, safety and outcome of these different options are summarized, particularly focusing on recent developments...
July 25, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28740933/18f-fdg-pet-response-and-clinical-outcomes-after-stereotactic-body-radiation-therapy-for-metastatic-melanoma
#11
Ryan S Youland, Ann T Packard, Miran J Blanchard, Andrea L Arnett, Gregory A Wiseman, Lisa A Kottschade, Roxana S Dronca, Svetomir N Markovic, Kenneth R Olivier, Sean S Park
BACKGROUND: Clinical data that support stereotactic body radiation therapy (SBRT) metastatic malignant melanoma (MM) are limited. Furthermore, functional imaging with 18F-fludeoxyglucose positron emission tomography (PET) may offer a more accurate post-SBRT assessment. Therefore, we assessed the clinical outcomes and metabolic response of metastatic MM after SBRT. METHODS AND MATERIALS: Patients with MM who were treated with SBRT and had pre- and post-PET scans (>1) were included in this study...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740928/magnetic-resonance-imaging-guided-reirradiation-of-recurrent-and-second-primary-head-and-neck-cancer
#12
Allen M Chen, Minsong Cao, Sophia Hsu, James Lamb, Argin Mikaeilian, Yingli Yang, Nzhde Agazaryan, Daniel A Low, Michael L Steinberg
PURPOSE: To report a single-institutional experience using magnetic resonance imaging (MRI) guided radiation therapy for the reirradiation of recurrent and second cancers of the head and neck. METHODS AND MATERIALS: Between October 2014 and August 2016, 13 consecutive patients with recurrent or new primary cancers of the head and neck that occurred in a previously irradiated field were prospectively enrolled in an institutional registry trial to investigate the feasibility and efficacy of MRI guided radiation therapy using a 0...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740913/reirradiation-with-stereotactic-body-radiation-therapy-after-prior-conventional-fractionation-radiation-for-locally-recurrent-pancreatic-adenocarcinoma
#13
Amanda J Koong, Diego A S Toesca, Rie von Eyben, Erqi L Pollom, Daniel T Chang
PURPOSE: Locally recurrent pancreatic cancer after prior radiotherapy is a therapeutic challenge with limited treatment options. This study examines the safety and efficacy of stereotactic body radiation therapy (SBRT) for locally recurrent pancreatic adenocarcinoma after prior conventional fractionation radiotherapy (CRT). METHODS AND MATERIALS: Outcomes from all patients treated with SBRT for locally recurrent pancreatic adenocarcinoma after prior CRT at our institution were reviewed...
January 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740900/management-approach-for-recurrent-brain-metastases-following-upfront-radiosurgery-may-affect-risk-of-subsequent-radiation-necrosis
#14
Ali Rae, Daniel Gorovets, Paul Rava, Daniel Ebner, Deus Cielo, Timothy J Kinsella, Thomas A DiPetrillo, Jaroslaw T Hepel
PURPOSE: Many patients treated with stereotactic radiosurgery (SRS) alone as initial treatment require 1 or more subsequent salvage therapies. This study aimed to determine if commonly used salvage strategies are associated with differing risks of radiation necrosis (RN). METHODS AND MATERIALS: All patients treated with upfront SRS alone for brain metastases at our institution were retrospectively analyzed. Salvage treatment details were obtained for brain failures...
October 2016: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740893/stereotactic-body-radiotherapy-sbrt-for-locally-advanced-extrahepatic-and-intrahepatic-cholangiocarcinoma
#15
Kiri A Sandler, Darlene Veruttipong, Vatche G Agopian, Richard S Finn, Johnny C Hong, Fady M Kaldas, Saeed Sadeghi, Ronald W Busuttil, Percy Lee
OBJECTIVES: We report single-institution clinical efficacy and safety outcomes for patients with unresectable locally advanced cholangiocarcinoma who were treated with stereotactic body radiation therapy (SBRT) and a subset of patients who received neoadjuvant SBRT and chemotherapy as part of an orthotopic liver transplantation (OLT) protocol. METHODS AND MATERIALS: From October 2008 to June 2015, 31 consecutive patients with unresectable extrahepatic (n = 25) or intrahepatic (n = 6) cholangiocarcinoma were treated with SBRT and retrospectively analyzed...
October 2016: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740453/clinical-outcomes-of-130-patients-with-primary-and-secondary-lung-tumors-treated-with-cyberknife-robotic-stereotactic-body-radiotherapy
#16
Zsolt Levente Janvary, Nicolas Jansen, Veronique Baart, Magali Devillers, David Dechambre, Eric Lenaerts, Laurence Seidel, Nicole Barthelemy, Patrick Berkovic, Akos Gulyban, Ferenc Lakosi, Zsolt Horvath, Philippe A Coucke
BACKGROUND: Authors report clinical outcomes of patients treated with robotic stereotactic body radiotherapy (SBRT) for primary, recurrent and metastatic lung lesions. PATIENTS AND METHODS: 130 patients with 160 lesions were treated with Cyberknife SBRT, including T1-3 primary lung cancers (54%), recurrent tumors (22%) and pulmonary metastases (24%). The mean biologically equivalent dose (BED10Gy) was 151 Gy (72-180 Gy). Median prescribed dose for peripheral and central lesions was 3×20 Gy and 3×15 Gy, respectively...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28740448/evaluation-of-brain-edema-formation-defined-by-mri-after-linac-based-stereotactic-radiosurgery
#17
Maciej Harat, Andrzej Lebioda, Judyta Lasota, Roman Makarewicz
BACKGROUND: Peri-lesional edema is a serious and well-known complication of stereotactic radiosurgery (SRS). Here we evaluated edema risk after SRS and assessed its formation and resolution dynamics. PATIENTS AND METHODS: 107 patients underwent SRS for heterogeneous diagnoses: 34 (29%) with arteriovenous malformations, 38 (35%) with meningiomas, 16 (15%) with metastatic tumors, 16 (15%) with acoustic neuromas, 3 with (3%) cavernomas, and 2 (2%) each with anaplastic astrocytomas and anaplastic oligoastrocytomas...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28740403/primary-lung-sarcoma-treated-with-stereotactic-ablative-radiotherapy-a-case-report
#18
Seung-Gu Yeo
Primary lung sarcoma (PLS) is an extremely rare, very aggressive malignancy. Surgical removal is considered the treatment of choice, and patients who have been given conventional radiotherapy have had inferior outcomes. This study is the first describing a case of PLS treated with stereotactic ablative radiotherapy (SABR), which precisely targets a small tumor with a markedly higher biologically effective dose than conventional radiotherapy. The patient was an 82-year-old man who was diagnosed with primary lung leiomyosarcoma based on radiology, pathology, and immunohistochemical examinations...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28739517/novel-use-of-the-leksell-gamma-frame-for-stereotactic-biopsy-of-posterior-fossa-lesions-technical-note
#19
Shiro Horisawa, Hiroshi Nakano, Takakzu Kawamata, Takaomi Taira
BACKGROUND: Stereotactic transcerebellar biopsies of brainstem tumors have often been reported. The Leksell frame or Cosman-Roberts-Wells frame is often used in transcerebellar approaches. However, to access lesions via the cerebellum, these frames should be secured as inferiorly on the cranium as possible, which can require exaggerated neck flexion and limit the flexible trajectory to the target. To overcome these disadvantages, we have devised a new way to use the Leksell frame for transcerebellar approaches...
July 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28739316/validation-of-the-disease-specific-gpa-for-patients-with-1-to-3-synchronous-brain-metastases-in-newly-diagnosed-nsclc
#20
Neil M Woody, Matthew D Greer, Chandana A Reddy, Gregory M M Videtic, Samuel T Chao, Erin S Murphy, John H Suh, Liliana Angelov, Gene H Barnett, Michael A Vogelbaum, Kevin L Stephans
BACKGROUND: The disease-specific graded prognostic assessment (DS-GPA) for brain metastases is a powerful prognostic tool but has not been validated for patients with synchronous brain metastases (SBM) in newly diagnosed non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS: We identified patients with newly diagnosed NSCLC with 1 to 3 SBM treated with stereotactic radiosurgery (SRS) between 1997 and 2012. We included patients whose brain metastases were treated with SRS alone or combined SRS and whole-brain radiotherapy (WBRT)...
July 6, 2017: Clinical Lung Cancer
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