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Robotized radiosurgery

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https://www.readbyqxmd.com/read/27811201/a-robust-measurement-point-for-dose-verification-in-delivery-quality-assurance-for-a-robotic-radiosurgery-system
#1
Keita Kurosu, Iori Sumida, Hiroya Shiomi, Hirokazu Mizuno, Hiroko Yamaguchi, Hirofumi Okubo, Keisuke Tamari, Yuji Seo, Osamu Suzuki, Seiichi Ota, Shinichi Inoue, Kazuhiko Ogawa
In this CyberKnife® dose verification study, we investigated the effectiveness of the novel potential error (PE) concept when applied to the determination of a robust measurement point for targeting errors. PE was calculated by dividing the differences between the maximum increases and decreases in dose distributions by the original distribution after obtaining the former by shifting the source-to-axis and off-axis distances of each beam by ±1.0 mm. Thus, PE values and measurement point dose heterogeneity were analyzed in 48 patients who underwent CyberKnife radiotherapy...
November 3, 2016: Journal of Radiation Research
https://www.readbyqxmd.com/read/27729088/target-delineation-and-optimal-radiosurgical-dose-for-pituitary-tumors
#2
Giuseppe Minniti, Mattia Falchetto Osti, Maximillian Niyazi
Stereotactic radiosurgery (SRS) delivered as either single-fraction or multi-fraction SRS (2-5 fractions) is frequently employed in patients with residual or recurrent pituitary adenoma. The most common delivery systems used for SRS include the cobalt-60 system Gamma Knife, the CyberKnife (CK) robotic radiosurgery system, or a modified conventional radiotherapy machine (linear accelerator, LINAC). Tumor control and normalization of hormone hypersecretion have been reported in 75-100 % and 25-80 % of patients, respectively...
October 11, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27690660/stereotactic-robot-assisted-mri-guided-laser-thermal-ablation-of-radiation-necrosis-in-the-posterior-cranial-fossa-technical-note
#3
Alvin Y Chan, Diem Kieu T Tran, Amandip S Gill, Frank P K Hsu, Sumeet Vadera
Laser interstitial thermal therapy (LITT) is a minimally invasive procedure used to treat a variety of intracranial lesions. Utilization of robotic assistance with stereotactic procedures has gained attention due to potential for advantages over conventional techniques. The authors report the first case in which robot-assisted MRI-guided LITT was used to treat radiation necrosis in the posterior fossa, specifically within the cerebellar peduncle. The use of a stereotactic robot allowed the surgeon to perform LITT using a trajectory that would be extremely difficult with conventional arc-based techniques...
October 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27675515/dose-volume-response-relationship-for-brain-metastases-treated-with-single-fraction-robotic-radiosurgery
#4
M J Amsbaugh, M B Yusuf, J Gaskins, Y T Guan, W Boling, S Y Woo
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675492/the-feasibility-of-dose-escalation-with-simultaneous-integrated-boost-sib-technique-in-patients-with-large-functioning-pituitary-macroadenomas-treated-with-robotic-radiosurgery
#5
D Pinnaduwage, G D Welch, E Youssef, S Srivastava, D Brachman
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675466/robotic-radiosurgery-in-the-treatment-of-trigeminal-neuralgia-a-private-practice-experience
#6
A E Gittleman, K K Dass, A Agarwal, S Passino, C Murray, T Costantino, K Steely
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675403/comparison-of-treatment-plans-using-robotic-radiosurgery-with-fixed-cone-helical-tomotherapy-and-volumetric-modulated-arc-therapy-with-fff-beam-for-spine-stereotactic-body-radiation-therapy
#7
L Sang Kyu, J H Kim, M J Kim, J Y Woo, J G Baek, S Y Kim, J H Cho, J S Chang, W S Koom
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675372/implementing-frameless-and-maskless-stereotactic-radiosurgery-with-real-time-6-degrees-of-freedom-robotic-head-motion-compensation
#8
A Belcher, X Liu, R D Wiersma
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675205/indication-of-the-multileaf-collimator-technology-in-a-commercially-available-robotic-radiosurgery-system-which-cases-are-suitable
#9
T Murai, Y Hattori, Y Manabe, D Okazaki, Y Ogawa, K Nakajima, H Iwata, Y Shibamoto
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674680/final-results-of-a-phase-1-2-study-of-stereotactic-body-radiation-therapy-with-real-time-tumor-tracking-using-a-robotic-radiosurgery-system-based-on-the-monte-carlo-algorithm-for-lung-tumors
#10
H Iwata, S Ishikura, T Murai, M Iwabuchi, M Inoue, K Tatewaki, S Ohta, N Yokota, Y Shibamoto
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674260/a-dosimetric-comparison-between-conventionally-fractionated-tomotherapy-volumetric-modulated-arc-therapy-sliding-window-and-proton-therapy-and-hypofractionated-robotic-radiosurgery-treatment-by-low-risk-prostate-carcinoma
#11
S Scobioala, C Kittel, U Haverkamp, M Channaoui, O Habibeh, K Elsayad, H T T Eich
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674166/prostate-specific-antigen-kinetics-after-robotic-radiosurgery-based-stereotactic-body-radiation-therapy-sbrt-the-effect-of-pretreatment-clinical-parameters
#12
S R Blacksburg, M R Witten, A E Katz, C Mendez, A Sanchez, V J Martello, N Russo, J A Haas
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27673776/hippocampal-sparing-and-target-volume-coverage-in-treating-3-10-brain-metastases-a-comparison-of-192-source-cobalt-radiosurgery-single-isocenter-vmat-and-nonisocentric-robotic-arm-mounted-linac-stereotactic-radiosurgery
#13
I Zhang, J Antone, L Vijeh, J Li, J Lauritano, M Marrero, S Saha, A Goenka, H D Zinkin, J P S Knisely
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27660737/late-gadolinium-enhancement-cardiac-magnetic-resonance-imaging-post-robotic-radiosurgical-pulmonary-vein-isolation-rrpvi-first-case-in-the-world
#14
Edgar Monroy, Jose Azpiri, Cuauhtémoc De La Peña, Carlos Cardona, Miguel Hinojosa, Rafael Zamarripa, Jose Assad
Pulmonary vein isolation using robotic radiosurgery system CyberKnife is a new non-invasive treatment of atrial fibrillation, currently in clinical phase. Robotic radiosurgical pulmonary vein isolation (RRPVI) uses stereotactic, non-invasive (painless) pinpoint radiation energy delivery to a small, precise area to accomplish ablation. The purpose of this report is to describe the finding of an increase in the enhancement of the left atrium demonstrated with the use of cardiac magnetic resonance imaging using late gadolinium enhancement (LGE-CMR) as a result of RRPVI in the first case in the world in humans using CyberKnife as a treatment for paroxysmal atrial fibrillation (PAF)...
2016: Curēus
https://www.readbyqxmd.com/read/27588226/treatment-planning-considerations-for-robotic-guided-cardiac-radiosurgery-for-atrial-fibrillation
#15
Oliver Blanck, Svenja Ipsen, Mark K Chan, Ralf Bauer, Matthias Kerl, Peter Hunold, Volkmar Jacobi, Ralf Bruder, Achim Schweikard, Dirk Rades, Thomas J Vogl, Peter Kleine, Frank Bode, Jürgen Dunst
PURPOSE: Robotic guided stereotactic radiosurgery has recently been investigated for the treatment of atrial fibrillation (AF). Before moving into human treatments, multiple implications for treatment planning given a potential target tracking approach have to be considered. MATERIALS & METHODS: Theoretical AF radiosurgery treatment plans for twenty-four patients were generated for baseline comparison. Eighteen patients were investigated under ideal tracking conditions, twelve patients under regional dose rate (RDR = applied dose over a certain time window) optimized conditions (beam delivery sequence sorting according to regional beam targeting), four patients under ultrasound tracking conditions (beam block of the ultrasound probe) and four patients with temporary single fiducial tracking conditions (differential surrogate-to-target respiratory and cardiac motion)...
2016: Curēus
https://www.readbyqxmd.com/read/27570715/stereotactic-arrhythmia-radioablation-star-of-ventricular-tachycardia-a-treatment-planning-study
#16
Lei Wang, Benjamin Fahimian, Scott G Soltys, Paul Zei, Anthony Lo, Edward A Gardner, Patrick J Maguire, Billy W Loo
PURPOSE: The first stereotactic arrhythmia radioablation (STAR) of ventricular tachycardia (VT) was delivered at Stanford on a robotic radiosurgery system (CyberKnife® G4) in 2012. The results warranted further investigation of this treatment. Here we compare dosimetrically three possible treatment delivery platforms for STAR. METHODS: The anatomy and target volume of the first treated patient were used for this study. A dose of 25 Gy in one fraction was prescribed to the planning target volume (PTV)...
2016: Curēus
https://www.readbyqxmd.com/read/27487871/robotic-path-finding-in-inverse-treatment-planning-for-stereotactic-radiosurgery-with-continuous-dose-delivery
#17
Marlee M Vandewouw, Dionne M Aleman, David A Jaffray
PURPOSE: Continuous dose delivery in radiation therapy treatments has been shown to decrease total treatment time while improving the dose conformity and distribution homogeneity over the conventional step-and-shoot approach. The authors develop an inverse treatment planning method for Gamma Knife® Perfexion™ that continuously delivers dose along a path in the target. METHODS: The authors' method is comprised of two steps: find a path within the target, then solve a mixed integer optimization model to find the optimal collimator configurations and durations along the selected path...
August 2016: Medical Physics
https://www.readbyqxmd.com/read/27335716/staged-radiosurgical-ablation-for-choroid-melanoma-a-case-report-with-emphasis-on-the-role-of-patient-preparation-treatment-planning-and-precision-of-delivery
#18
Marta Adamczyk, Piotr Janiga
The aim of reporting this case of choroid melanoma of the left eye is to introduce the in-house-designed treatment planning protocol for fractionated radiosurgical ablation of an intraocular lesion. This is a clinical case with emphasis on treatment preparation and delivery using the Accuray CyberKnife Robotic Radiosurgery System (Accuray, Sunnyvale, CA, USA) for a patient immobilized with a head mask and our in-house-made eye fixation system.
2016: Curēus
https://www.readbyqxmd.com/read/27330877/robotic-radiosurgery-for-the-treatment-of-intramedullary-spinal-cord-metastases-a-case-report-and-literature-review
#19
Rafael Garcia, Kita Sallabanda, Iciar Santa-Olalla, Jose Luis Lopez Guerra, Lijia Avilés, Morena Sallabanda, Eleonor Rivin, José Samblás
Modern technologies allow the delivery of high radiation doses to intramedullary spinal cord metastases while lowering the dose to the neighboring organs at risk. Whether this dosimetric advantage translates into clinical benefit is not well known. This study evaluates the acute and late toxicity outcomes in a patient treated with robotic radiosurgery for an intramedullary spinal cord metastasis. A 50-year-old woman diagnosed in May 2006 with invasive ductal carcinoma of the right breast T2N3M1 (two liver metastases) received chemotherapy with a complete response...
2016: Curēus
https://www.readbyqxmd.com/read/27330875/the-continuous-assessment-of-cranial-motion-in-thermoplastic-masks-during-cyberknife-radiosurgery-for-trigeminal-neuralgia
#20
Tewfik J Bichay, Alan Mayville
Stereotactic radiosurgery (SRS) treatment is characterized by high doses per fraction and extremely steep dose gradients. This requires a great degree of accurate localization to the appropriate treatment position, and continuous immobilization during the treatment session. In the case of Trigeminal Neuralgia (TGN) treatment this is especially true as the very small target volume makes positional accuracy critical. In this study we carried out a quantitative analysis of patient motion during the full treatment fraction within a radiosurgery immobilization mask system...
2016: Curēus
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