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https://www.readbyqxmd.com/read/29149108/comment-on-efficacy-of-stereotactic-body-radiotherapy-in-oligorecurrent-and-in-oligoprogressive-prostate-cancer-new-evidence-from-a-multicentric-study
#1
Isabel Bravo
No abstract text is available yet for this article.
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29149106/reply-to-comment-on-efficacy-of-stereotactic-body-radiotherapy-in-oligorecurrent-and-in-oligoprogressive-prostate-cancer-new-evidence-from-a-multicentric-study
#2
Luca Triggiani, Rosario Mazzola, Stefano Maria Magrini, Filippo Alongi, Michela Buglione
No abstract text is available yet for this article.
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29149022/pyogenic-brain-abscess-caused-by-peptostreptococcus-in-a-patient-with-hiv-1-infection
#3
Jose Armando Gonzales Zamora, Luis Alberto Espinoza
In the setting of HIV, cerebral lesions are usually secondary to lymphoma and opportunistic infections; however, in patients with CD4 counts above 200 cells/uL, other pathologies such as pyogenic brain abscess could gain importance. The microbiology of pyogenic brain abscess has Staphylococcus and Streptococcus as the leading etiologic pathogens in immunocompetent individuals. Peptostreptococcus is also recognized as a common cause of brain abscess in this patient population. In HIV-infected individuals, there have been sporadic reports of Peptostreptococcus infections but none of brain abscess...
November 17, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/29143275/increasing-time-to-postoperative-stereotactic-radiation-therapy-for-patients-with-resected-brain-metastases-investigating-clinical-outcomes-and-identifying-predictors-associated-with-time-to-initiation
#4
Mehran B Yusuf, Mark J Amsbaugh, Eric Burton, Megan Nelson, Brian Williams, Maria Koutourousiou, Haring Nauta, Shiao Woo
We sought to determine the impact of time to initiation (TTI) of post-operative radiosurgery on clinical outcomes for patients with resected brain metastases and to identify predictors associated with TTI. All patients with resected brain metastases treated with postoperative SRS or fractionated stereotactic radiation therapy (fSRT) from 2012 to 2016 at a single institution were reviewed. TTI was defined as the interval from resection to first day of radiosurgery. Receiver operating characteristic (ROC) curves were used to identify an optimal threshold for TTI with respect to local failure (LF)...
November 15, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29142753/long-term-survival-in-a-patient-with-metastatic-squamous-cell-lung-carcinoma-a-case-report
#5
Emiddio Barletta, Piera Federico, Vincenza Tinessa, Domenico Germano, Lucia Cannella, Teresa Pironti, Bruno Daniele
Non-small-cell lung cancer (NSCLC) is the most common malignancy in industrialized countries, with a 5-year survival rate of only ~15%, as the majority of the patients have advanced-stage disease at diagnosis and the treatment options are limited. Squamous cell carcinoma the second most frequent type of NSCLC and is closely associated with cigarette smoking. We herein present the case of a 72-year-old male smoker, diagnosed with stage IV squamous cell lung carcinoma, with a solitary brain metastasis. After the diagnosis, stereotactic radiotherapy was performed on the brain metastasis...
November 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29140463/anatomic-investigation-of-the-trajectory-for-stereotactic-laser-amygdalohippocampectomy
#6
Vanessa M Holanda, Abuzer Gungor, Serhat Baydin, Erik H Middlebrooks, Shabbar F Danish
BACKGROUND: Magnetic resonance imaging-guided laser interstitial thermal therapy (LITT) has emerged as a promising treatment for mesial temporal lobe epilepsy. Surgeons must understand the relevant anatomy that is traversed by the catheter and affected by ablation. OBJECTIVE: To study the anatomic structures crossed by the LITT catheter until it reaches the amygdala. METHODS: Three human cadaveric heads were implanted with catheters using a frameless stereotactic technique...
November 11, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29139047/stereotactic-navigation-during-laparoscopic-surgery-for-locally-recurrent-rectal-cancer
#7
K Kawada, S Hasegawa, T Okada, K Hida, T Okamoto, Y Sakai
No abstract text is available yet for this article.
November 14, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/29139010/radiobiology-and-radiotherapy-of-brain-metastases
#8
Anuradha Thiagarajan, Yoshiya Yamada
Brain metastases are the most common intracranial tumors in adults, accounting for more than 50% of all such cases. The approach to and management of brain metastases have evolved significantly in recent years due to several reasons. These include advances in neurosurgical and radiotherapeutic techniques, improved systemic therapy options offering better systemic and intracranial disease control and prolongation of survival as a result of these improvements, making side-effects of proposed therapies (e.g. neurocognitive decline from whole brain radiotherapy) an important consideration...
November 14, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/29135118/the-impact-of-dose-matrix-and-voxel-dimensions-to-dose-calculation-for-stereotactic-radiosurgery
#9
Kalliopi Platoni, Pascal Grandjean, Vassilis Kouloulias, George Patatoukas, Dimitris Lefkopoulos
PURPOSE: The purpose of the present study was the optimization of dose calculation for intracranial stereotactic radiosurgery. METHODS: We evaluated the Singular Value Decomposition (SVD) analysis as a novel optimization technique. Our approach to dose distribution optimization was to recover estimates of minibeams weights from well-defined provisional dose matrices. The dose delivered by a set of minibeams is formulated as a matrix equation. We studied the influence of dose matrix and voxel dimensions on the conditioning of stereotactic radiotherapy inverse problem...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29132801/robotic-stereotactic-treatment-for-malignant-metastasis-of-solid-tumour-in-the-pancreas-a-multiple-case-report-and-review-of-literature
#10
M Loi, A Magallon-Baro, C Papalazarou, M Milder, J J Nuyttens
Metastatic involvement of the pancreas occurs in 5% of patients affected by advanced malignancies. Surgical resection has been reported by number of authors as a valuable option to improve disease control, in particular in patients with limited disease burden and favourable histotypes; however, the benefit of this procedure has been questioned due to patient selection, technical challenges and relevant risk of perioperative mortality and severe complications. In the present study, a cohort of surgically unfit patients affected by a solitary metastasis in the pancreas from various primary tumours received stereotactic radiotherapy with an ablative dose schedule, obtaining promising local and distant disease progression-free delay with minor toxicity...
November 10, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29132382/early-motor-function-after-local-treatment-of-brain-metastases-in-the-motor-cortex-region-with-stereotactic-radiotherapy-radiosurgery-or-microsurgical-resection-a-retrospective-study-of-two-consecutive-cohorts
#11
Bogdan Pintea, Brigitta Baumert, Thomas Mehari Kinfe, Konstantinos Gousias, Yaroslav Parpaley, Jan Patrick Boström
BACKGROUND: We compared the functional outcome and influential factors of two standard treatment modalities for central cerebral metastases: electrophysiological-controlled microsurgical resection (MSR) and stereotactic radiotherapy/stereotactic radiosurgery (SRT/SRS). METHODS: We performed a database search for central metastasis treatments during the period from January 2008 to September 2012 in two clinical registers: 1) register for intraoperative neuromonitoring (Department of Neurosurgery), and 2) prospective database for SRT/SRS (Department of Radiotherapy)...
November 13, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29131807/towards-frameless-maskless-srs-through-real-time-6dof-robotic-motion-compensation
#12
Andrew H Belcher, Xinmin Liu, Steven Chmura, Kamil Yenice, Rodney D Wiersma
Stereotactic radiosurgery (SRS) uses precise dose placement to treat conditions of the CNS. Frame-based SRS uses a metal head ring fixed to the patient's skull to provide high treatment accuracy, but patient comfort and clinical workflow may suffer. Frameless SRS, while potentially more convenient, may increase uncertainty of treatment accuracy and be physiologically confining to some patients. By incorporating highly precise robotics and advanced software algorithms into frameless treatments, we present a novel frameless and maskless SRS system where a robot provides real-time 6DoF head motion stabilization allowing positional accuracies to match or exceed those of traditional frame-based SRS...
November 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29131131/gamma-knife-stereotactic-radiosurgery-for-the-treatment-of-primary-and-metastatic-ocular-malignancies
#13
Andrea L H Arnett, Margaret M Reynolds, Jose S Pulido, Ian F Parney, Nadia N Laack
BACKGROUND: Gamma knife radiosurgery (GKR) can be used for precise targeting of malignant lesions of the CNS when brachytherapy is not an appropriate option. OBJECTIVES: This study reports treatment technique, efficacy, and radiation-induced adverse effects in patients with primary and metastatic ocular lesions treated with Leksell GKR. METHODS: A retrospective, single-institution review was conducted of 28 patients with primary or metastatic ocular disease, treated from 2000 to 2014...
November 4, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29131117/significant-hemorrhage-rate-reduction-after-gamma-knife-radiosurgery-in-symptomatic-cavernous-malformations-long-term-outcome-in-95-case-series-and-literature-review
#14
Remedios López-Serrano, Nuria E Martínez, M Elena Kusak, Alicia Quirós, Roberto Martínez
BACKGROUND: The natural history of cavernous malformations (CMs) has remained unclear. This lack of knowledge has made treatment decisions difficult. Indeed, the use of stereotactic radiosurgery is nowadays controversial. The purpose of this paper is to throw light on the effectiveness of Gamma Knife radiosurgery (GKRS) therapy. METHODS: The authors reviewed data collected from a prospectively maintained database. A total of 95 patients (57 female and 38 male) underwent GKRS for high-surgical-risk CMs...
November 4, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29128955/right-brodmann-area-18-predicts-tremor-arrest-after-vim-radiosurgery-a-voxel-based-morphometry-study
#15
Constantin Tuleasca, Tatiana Witjas, Dimitri Van de Ville, Elena Najdenovska, Antoine Verger, Nadine Girard, Jerome Champoudry, Jean-Philippe Thiran, Meritxell Bach Cuadra, Marc Levivier, Eric Guedj, Jean Régis
INTRODUCTION: Drug-resistant essential tremor (ET) can benefit from open standard stereotactic procedures, such as deep-brain stimulation or radiofrequency thalamotomy. Non-surgical candidates can be offered either high-focused ultrasound (HIFU) or radiosurgery (RS). All procedures aim to target the same thalamic site, the ventro-intermediate nucleus (e.g., Vim). The mechanisms by which tremor stops after Vim RS or HIFU remain unknown. We used voxel-based morphometry (VBM) on pretherapeutic neuroimaging data and assessed which anatomical site would best correlate with tremor arrest 1 year after Vim RS...
November 11, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29128934/radiobiological-analysis-of-stereotactic-body-radiation-therapy-for-an-evidence-based-planning-target-volume-of-the-lung-using-multiphase-ct-images-obtained-with-a-pneumatic-abdominal-compression-apparatus-a-case-study
#16
Arun Chairmadurai, Harish Chandra Goel, Sandeep Kumar Jain, Pawan Kumar
This study evaluated the efficiency of stereotactic body radiation therapy of lung (SBRT-Lung) in generating a treatment volume using conventional multiple-phase three-dimensional computed tomography (3D-CT) of a patient immobilized with pneumatic abdominal compression. The institutional protocol for SBRT-Lung using the RapidArc technique relied on a planning target volume (PTV) delineated using 3D-CT and accounted for linear and angular displacement of the tumor during respiratory movements. The efficiency of the institutional protocol was compared with that of a conventional method for PTV delineation based on radiobiological estimates, such as tumor control probability (TCP) and normal tissue complication probability (NTCP), evaluated using dose-volume parameters...
November 11, 2017: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29128197/reirradiation-of-gliomas-under-stereotactic-conditions-prognostic-factors-for-survival-without-relapse-or-side-effects-a-retrospective-study-at-tours-regional-university-hospital-france
#17
S Lévy, S Chapet, N Scher, K Debbi, A Ruffier, G Bernadou, Y Pointreau, G Calais
PURPOSE: To search for factors correlated with relapse-free survival following stereotactic reirradiation in patients with recurrent glioma following radiochemotherapy and evaluate tolerance to this treatment. PATIENTS AND METHODS: Initial radiotherapy was given according to the protocol of Stupp and al. Reirradiation was performed using the CyberKnife(®) system. Patients could have had surgical resection initially and at the time of recurrence. We analysed 13 patients treated between July 2010 and September 2014...
November 8, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29128147/using-indocyanine-green-extraction-to-predict-liver-function-after-stereotactic-body-radiation-therapy-for-hepatocellular-carcinoma
#18
Krithika Suresh, Dawn Owen, Latifa Bazzi, William Jackson, Randall K Ten Haken, Kyle Cuneo, Mary Feng, Theodore S Lawrence, Matthew J Schipper
PURPOSE: To test the hypothesis that mid-treatment measures of the retention of indocyanine green after 15 minutes (ICGR15) would improve the prediction of posttreatment liver function in the setting of hepatocellular carcinoma. METHODS AND MATERIALS: Between 2006 and 2015, 144 patients with hepatocellular carcinoma received 175 courses of stereotactic body radiation therapy (SBRT). Patient data, such as age, sex, portal vein thrombosis, cirrhosis, Child-Pugh (CP) score, prior liver-directed therapies, and liver function tests, including albumin-bilirubin (ALBI) and ICG clearance, and dosimetric data, such as tumor volume and radiation dose, were collected...
September 22, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29126142/stereotactic-radiosurgery-in-the-management-of-limited-1-4-brain-metasteses-systematic-review-and-international-stereotactic-radiosurgery-society-practice-guideline
#19
Samuel T Chao, Antonio De Salles, Motohiro Hayashi, Marc Levivier, Lijun Ma, Roberto Martinez, Ian Paddick, Jean Régis, Samuel Ryu, Ben J Slotman, Arjun Sahgal
BACKGROUND: Guidelines regarding stereotactic radiosurgery (SRS) for brain metastases are missing recently published evidence. OBJECTIVE: To conduct a systematic review and provide an objective summary of publications regarding SRS in managing patients with 1 to 4 brain metastases. METHODS: Using Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines, a systematic review was conducted using PubMed and Medline up to November 2016...
November 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29125412/stereotactic-radiosurgery-for-jugular-foramen-schwannomas-an-international-multicenter-study
#20
Hideyuki Kano, Antonio Meola, Huai-Che Yang, Wan-Yuo Guo, Roberto Martínez-Alvarez, Nuria Martínez-Moreno, Dusan Urgosik, Roman Liscak, Or Cohen-Inbar, Jason Sheehan, John Y K Lee, Mahmoud Abbassy, Gene H Barnett, David Mathieu, Douglas Kondziolka, L Dade Lunsford
OBJECTIVE For some jugular foramen schwannomas (JFSs), complete resection is possible but may be associated with significant morbidity. Stereotactic radiosurgery (SRS) is a minimally invasive alternative or adjunct to microsurgery for JFSs. The authors reviewed clinical and imaging outcomes of SRS for patients with these tumors. METHODS Nine participating centers of the International Gamma Knife Research Foundation identified 92 patients who underwent SRS between 1990 and 2013. Forty-one patients had prior subtotal microsurgical resection...
November 10, 2017: Journal of Neurosurgery
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