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Stereotactic ablative

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https://www.readbyqxmd.com/read/28433508/organs-at-risk-in-lung-sbrt
#1
REVIEW
F De Rose, D Franceschini, G Reggiori, A Stravato, P Navarria, A M Ascolese, S Tomatis, P Mancosu, M Scorsetti
Lung stereotactic body radiotherapy (SBRT) is an accurate and precise technique to treat lung tumors with high 'ablative' doses. Given the encouraging data in terms of local control and toxicity profile, SBRT has currently become a treatment option for both early stage lung cancer and lung oligometastatic disease in patients who are medically inoperable or refuse surgical resection. Dose-adapted fractionation schedules and ongoing prospective trials should provide further evidence of SBRT safety trying to reduce toxicities and complications...
April 19, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28433413/stereotactic-ablative-radiotherapy-in-the-treatment-of-low-and-intermediate-risk-prostate-cancer-is-there-an-optimal-dose
#2
Joelle Helou, Laura D'Alimonte, Harvey Quon, Andrea Deabreu, Kristina Commisso, Patrick Cheung, William Chu, Alexandre Mamedov, Melanie Davidson, Ananth Ravi, Andrew Loblaw
PURPOSE: To investigate if stereotactic ablative radiotherapy (SABR) dose is associated with PSA at 3years (PSA3y) in the treatment of localized prostate cancer and to explore predictors of late genitourinary (GU) toxicity. MATERIALS AND METHODS: Three prospective trials of SABR were undertaken at our institution: 1) 35Gy/5 fractions/29days; 2) 40Gy/5 fractions/29days; 3) 40Gy/5 fractions/11 or 29days. PSA3y was analyzed as a continuous variable. Toxicity was defined as the worst new toxicity and assessed using the radiation therapy oncology group (RTOG) late morbidity scheme...
April 19, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28430035/noninvasive-neuromodulation-and-thalamic-mapping-with-low-intensity-focused-ultrasound
#3
Robert F Dallapiazza, Kelsie F Timbie, Stephen Holmberg, Jeremy Gatesman, M Beatriz Lopes, Richard J Price, G Wilson Miller, W Jeffrey Elias
OBJECTIVE Ultrasound can be precisely focused through the intact human skull to target deep regions of the brain for stereotactic ablations. Acoustic energy at much lower intensities is capable of both exciting and inhibiting neural tissues without causing tissue heating or damage. The objective of this study was to demonstrate the effects of low-intensity focused ultrasound (LIFU) for neuromodulation and selective mapping in the thalamus of a large-brain animal. METHODS Ten Yorkshire swine ( Sus scrofa domesticus) were used in this study...
April 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28424839/reirradiation-of-recurrent-node-positive-non-small-cell-lung-cancer-after-previous-stereotactic-radiotherapy-for-stage%C3%A2-i-disease-a%C3%A2-multi-institutional-treatment-recommendation
#4
Carsten Nieder, Dirk De Ruysscher, Laurie E Gaspar, Matthias Guckenberger, Minesh P Mehta, Patrick Cheung, Arjun Sahgal
BACKGROUND: Practice guidelines have been developed for early-stage and locally advanced non-small cell lung cancer (NSCLC). However, many common clinical scenarios still require individualized decision making. This is true for locoregional relapse after initial stereotactic radiotherapy (stereotactic body radiation therapy or stereotactic ablative radiotherapy; SBRT or SABR), an increasingly utilized curative treatment option for stage I NSCLC. METHODS: A consortium of expert radiation oncologists was established with the aim of providing treatment recommendations...
April 19, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28420863/changes-of-systemic-immune-response-after-stereotactic-ablative-radiotherapy-sabr-first-results-of-a-prospective-study-in-early-lung-cancer-patients
#5
Jacek Rutkowski, Tomasz Ślebioda, Zbigniew Kmieć, Renata Zaucha
INTRODUCTION    Among all lung tumors non-small cell lung cancer (NSCLC) is the most common. Conventional conservative treatment in medically inoperable patients with early stage NSCLC has a poor outcome. To improve treatment efficacy stereotactic ablative radiotherapy (SABR) has been developed to enable the delivery of high-dose radiation to the tumor.  OBJECTIVES    This prospective study was conducted to confirm the hypothesis that a sudden death of cancer cells after SABR may lead to systemic immune response changes...
April 18, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28419284/laser-thermal-ablation-for-metastases-failing-radiosurgery-a-multicentered-retrospective-study
#6
Tafadzwa L Chaunzwa, Di Deng, Eric C Leuthardt, Stephen B Tatter, Alireda M Mohammadi, Gene H Barnett, Veronica L Chiang
BACKGROUND: Radiosurgical failure following stereotactic radiosurgery for brain metastases can be attributed to tumor regrowth or radiation necrosis. MRI-guided laser thermal ablation (LTA) therapy has emerged as an option for treatment; however, previous literature demonstrates variable results across centers. OBJECTIVE: To assess the outcomes of LTA in the treatment of metastases failing radiosurgery across multiple centers and to determine if any treatment factors are predictive of outcome...
April 13, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28419246/quality-assurance-for-a-multicenter-phase-ii-study-of-stereotactic-ablative-radiotherapy-for-hepatocellular-carcinoma-%C3%A2-5-cm-a-planning-dummy-run
#7
Sun Hyun Bae, Mi-Sook Kim, Won Il Jang, Kum Bae Kim, Kwang Hwan Cho, Woo Chul Kim, Chang Yeol Lee, Eun Seog Kim, Chul Won Choi, A Ram Chang, Sunmi Jo, Jin-Young Kim
Objective: The Korean Radiation Oncology Group (12-02) investigated the outcome of stereotactic ablative radiotherapy for hepatocellular carcinoma ≤5 cm using 60 Gy in three fractions. To evaluate dosimetric differences and compliance in a multicenter trial, a planning dummy run procedure was performed. Methods: All six participating institutions were provided the contours of two dummy run cases. Plans were performed following the study protocol to cover the planning target volume with a minimum of 90% of the prescription dose and to satisfy the constraints for organs at risk...
April 13, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28415147/neurosurgical-laser-ablation-and-mr-thermometry-risks-of-multisite-workflow-pattern
#8
Paul S Larson, Sudhakar Vadivelu, Hooman Azmi-Ghadimi, Amy Nichols, Loretta Fauerbach, Helen Boehm Johnson
Neurosurgical laser ablation is a relatively new but rapidly growing application of stereotactic neurosurgery that allows neurosurgeons to treat many previously untreatable conditions with the added benefit of shorter hospitalizations and recovery times. The vast majority of these procedures, however, are performed using a multisite workflow pattern involving transport of the patient between the operating room (OR), the computed tomography (CT) suite, and the magnetic resonance imaging (MRI) suite, often necessitating patient transfer through public pathways and requiring multiple trips if laser fiber placement is not accurate...
April 2017: Journal of Healthcare Risk Management: the Journal of the American Society for Healthcare Risk Management
https://www.readbyqxmd.com/read/28409420/single-fraction-spine-stereotactic-ablative-body-radiotherapy-with-volumetric-modulated-arc-therapy
#9
Matthew M Gestaut, Nitika Thawani, Sangroh Kim, Veera R Gutti, Sameer Jhavar, Niloyjyoti Deb, Andrew Morrow, Russell A Ward, Jason H Huang, Mehul Patel
This study investigated a single institution's experience with volumetric modulated arc therapy (VMAT) directed stereotactic ablative body radiotherapy (SABR) for vertebral metastases. From 2010 to 2014, 95 lesions of spinal metastases in 73 patients were treated with SABR using VMAT. Clinical local control, pain level, and use of steroid medication were employed to evaluate treatment responses. The majority (79%) of patients were treated with a radiation dose of 20 Gy in a single fraction. However, when normal tissue constraints could not be achieved, the dose was reduced to 18 Gy (11%) or 16 Gy (8%) in 1 fraction...
April 13, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28391424/optimal-radiation-therapy-for-small-cell-lung-cancer
#10
REVIEW
Michael F Gensheimer, Billy W Loo
Radiation therapy plays an important role in the management of both limited stage and extensive stage small cell lung cancer. For limited stage disease, there has been a trend toward reduced size of thoracic radiation fields, which has the potential to reduce toxicity. FDG-PET staging helps make this possible by more accurately identifying areas of nodal and metastatic involvement. Trials have demonstrated similar outcomes using a range of radiation fractionation schedules, allowing flexibility in individualizing treatment...
April 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/28386919/stereo-eeg-guided-radiofrequency-thermocoagulations
#11
Massimo Cossu, Francesco Cardinale, Giuseppe Casaceli, Laura Castana, Alessandro Consales, Piergiorgio D'Orio, Giorgio Lo Russo
The rationale and the surgical technique of stereo-electroencephalography (SEEG)-guided radiofrequency thermocoagulation (RF-TC) in the epileptogenic zone (EZ) of patients with difficult-to-treat focal epilepsy are described in this article. The application of the technique in pediatric patients is also detailed. Stereotactic ablative procedures by RF-TC have been employed in the treatment of epilepsy since the middle of the last century. This treatment option has gained new popularity in recent decades, mainly because of the availability of modern imaging techniques, which allow accurate targeting of intracerebral epileptogenic structures...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28381302/predictors-of-chest-wall-toxicity-after-stereotactic-ablative-radiotherapy-using-real-time-tumor-tracking-for-lung-tumors
#12
Younghee Park, Hee Jung Kim, Ah Ram Chang
BACKGROUND: To evaluate the incidence of chest wall toxicity after lung stereotactic ablative radiotherapy (SABR) and identify risk factors for the development of rib fracture. METHODS: Thirty-nine patients with 49 lesions underwent SABR for primary or metastatic lung tumors using Cyberknife® with tumor tracking systems. Patient characteristics, treatment factors and variables obtained from dose-volume histograms (DVHs) were analyzed to find the association with chest wall toxicity...
April 5, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28377206/ablative-therapy-for-oligometastatic-non-small-cell-lung-cancer
#13
REVIEW
Oscar Juan, Sanjay Popat
The oligometastatic state represents a distinct entity among those with metastatic disease and consists of patients with metastases limited in number and location, representing an intermediate state between locally confined and widely metastatic cancer. Although similar, "oligorecurrence" (limited number of metachronous metastases under conditions of a controlled primary lesion) and "oligoprogressive" (disease progression at a limited number of sites with disease controlled at other disease sites) states are distinct entities...
March 14, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28362211/laser-interstitial-thermal-therapy-for-palliative-ablation-of-a-chordoma-metastasis-to-the-spine-case-report
#14
Brian J Williams, Patrick J Karas, Ganesh Rao, Laurence D Rhines, Claudio E Tatsui
The authors present the first report of laser interstitial thermal therapy (LITT) ablation of a recurrent chordoma metastasis to the cervical spine. This patient was a 75-year-old woman who was diagnosed and treated for a sacral chordoma, and then developed metastases to the lung and upper thoracic spine. Unfortunately she experienced symptomatic recurrence at the C-7 spinous process. She underwent an uncomplicated LITT to the lesion. The patient convalesced without incident and was discharged on postoperative Day 1...
March 31, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28359470/alternatives-to-lobectomy-for-high-risk-patients-with-early-stage-non-small-cell%C3%A2-lung-cancer
#15
REVIEW
Jacob A Klapper, Scott A Hittinger, Chadrick E Denlinger
The standard of care for the surgical management of non-small cell lung cancer remains a lobectomy. For patients with limited pulmonary reserve, lesser resections or nonoperative therapies may be indicated. The purpose of this review is to evaluate the outcomes from more limited resections as well as the evidence for the efficacy of photon-based and proton-based stereotactic body radiotherapy, radiofrequency ablation, and microwave thermal ablation. In doing so, the goal of this review is to provide surgeons with an evidence-based treatment menu for treating patients who are not candidates for lobectomy...
April 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28358667/optimizing-sabr-delivery-for-synchronous-multiple-lung-tumors-using-volumetric-modulated-arc-therapy
#16
Hilâl Tekatli, Shyama U Tetar, Timothy K Nguyen, Andrew Warner, Wilko F Verbakel, David A Palma, Max Dahele, Stewart Gaede, Cornelis Haasbeek, Femke O Spoelstra, Patricia F de Haan, Ben J Slotman, Suresh Senan
BACKGROUND: Volumetric-modulated arc therapy (VMAT) delivery for stereotactic ablative radiotherapy (SABR) of multiple lung tumors allows for faster treatments. We report on clinical outcomes and describe a general approach for treatment planning. MATERIAL AND METHODS: Patients undergoing multi iso-center VMAT-based SABR for ≥2 lung lesions between 2009 and 2014 were identified from the VU University Medical Center and London Health Sciences Centre. Patients were eligible if the start date of the SABR treatment for the different lesions was within a time range of 30 days...
April 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28346656/7-year-follow-up-after-stereotactic-ablative-radiotherapy-for-patients-with-stage-i-non-small-cell-lung-cancer-results-of-a-phase-2-clinical-trial
#17
Bing Sun, Eric D Brooks, Ritsuko U Komaki, Zhongxing Liao, Melenda D Jeter, Mary F McAleer, Pamela K Allen, Peter A Balter, James D Welsh, Michael S O'Reilly, Daniel Gomez, Stephen M Hahn, Jack A Roth, Reza J Mehran, John V Heymach, Joe Y Chang
BACKGROUND: The authors evaluated the efficacy, patterns of failure, and toxicity of stereotactic ablative radiotherapy (SABR) for patients with medically inoperable, clinical stage I non-small cell lung cancer (NSCLC) in a prospective clinical trial with 7 years of follow-up. Clinical staging was performed according to the seventh edition of the American Joint Committee on Cancer TNM staging system. METHODS: Eligible patients with histologically confirmed NSCLC of clinical stage I as determined using positron emission tomography staging were treated with SABR (50 grays in 4 fractions)...
March 27, 2017: Cancer
https://www.readbyqxmd.com/read/28345951/stereotactic-ablative-radiotherapy-induces-peripheral-t-cell-activation-in-early-stage-lung-cancer-patients
#18
Pauline L de Goeje, Egbert F Smit, Cynthia Waasdorp, Merel T B Schram, Margaretha E H Kaijen-Lambers, Koen Bezemer, Mark de Mol, Koen J Hartemink, Joost J M E Nuyttens, Alexander P W M Maat, Joost P J J Hegmans, Rudi W Hendriks, Suresh Senan, Joachim G J V Aerts
No abstract text is available yet for this article.
March 27, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28342124/laparoscopic-image-based-navigation-for-microwave-ablation-of-liver-tumors-a-multi-center-study-laparoscopic-navigation-for-hepatic-ablation
#19
Tinguely Pascale, Fusaglia Matteo, Freedman Jacob, Banz Vanessa, Weber Stefan, Candinas Daniel, Nilsson Henrik
BACKGROUND: Stereotactic navigation technology has been proposed to augment accuracy in targeting intrahepatic lesions for local ablation therapy. This retrospective study evaluated accuracy, efficacy, and safety when using laparoscopic image-guided microwave ablation (LIMA) for malignant liver tumors. METHODS: All patients treated for malignant liver lesions using LIMA at two European centers between 2013 and 2015 were included for analysis. A landmark-based registration technique was applied for intraoperative tumor localization and positioning of ablation probes...
March 24, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28341320/gallbladder-toxicity-and-high-dose-ablative-intent-radiation-for-liver-tumors-should-we-constrain-the-dose
#20
Shyam K Tanguturi, Andrzej Niemierko, Jennifer Y Wo, Khanhnhat N Nguyen, Hugh Prichard, Andrew X Zhu, John A Wolfgang, Theodore S Hong
PURPOSE: Little is known about the risk of gallbladder toxicity from hypofractionated (HFXRT) and stereotactic body radiation therapy (SBRT). We report on gallbladder toxicity and attribution to treatment in a prospective series of patients with primary and metastatic liver tumors receiving ablative-intent HFXRT and SBRT with protons. METHODS AND MATERIALS: We evaluated 93 patients with intact gallbladders enrolled in either of 2 trials investigating proton HFXRT and SBRT for primary and metastatic liver tumors from 2009 to 2014...
February 9, 2017: Practical Radiation Oncology
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