...Periodic spot-checks for gamma stereotactic radiosurgery units. 35...Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35...Periodic spot-checks for gamma stereotactic radiosurgery units....

...inspection for teletherapy and gamma stereotactic radiosurgery units. 35.2655...inspection for teletherapy and gamma stereotactic radiosurgery units. (a) A licensee...inspections for teletherapy and gamma stereotactic radiosurgery units required by §...

...teletherapy, remote afterloader, and gamma stereotactic radiosurgery full calibrations. ...teletherapy, remote afterloader, and gamma stereotactic radiosurgery full calibrations. ...remote afterloader unit, and gamma stereotactic radiosurgery unit full...

... Accession Number : ADA254462. Title : Conformal Stereotactic Radiosurgery With Multileaf Collimation. Descriptive Note : Master's thesis,. ...

Stereotactic radiosurgery and fractionated stereotactic radiotherapy represent an increasingly important option in the treatment of central nervous system disease. In this article, we discuss indications for stereotactic radiosurgery and review results reported in the medical literature.

... services Gamma-knife radiosurgery at Mayo Clinic References Stereotactic radiosurgery overview. International RadioSurgery Association. http://www.irsa. ...

...Units, Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35.605 ...unit, teletherapy unit, or gamma stereotactic radiosurgery unit that involves...units, teletherapy units, or gamma stereotactic radiosurgery units. (c)...

...units, teletherapy units, and gamma stereotactic radiosurgery units. 35.2605...units, teletherapy units, and gamma stereotactic radiosurgery units. A licensee...units, teletherapy units, and gamma stereotactic radiosurgery units as required...

... millimeters away or even adjacent to the surface. Stereotactic radiosurgery is performed by a team composed of ... to be accepted when the results are evaluated. Stereotactic radiosurgery has a number of evident advantages over ...

Meningiomas are mostly benign but some are atypical or malignant. Surgical resection is curative when complete removal of benign meningiomas is contemplated. Incompletely excised and recurrent tumors are frequently treated with fractionated radiation therapy or stereotactic radiosurgery. The purpose of this study is to evaluate the short-term radiological ...

... sources of radiation: The Gamma Knife� , which uses 192 or 201 beams of highly focused gamma rays ...

Purpose: To assess the conformity of dynamic conformal arc linear accelerator-based stereotactic radiosurgery and to describe a standardized method of isodose surface (IDS) selection. Methods and Materials: In 174 targets, the conformity index (CI) at the prescription IDS used for treatment was calculated as CI = (PIV/PVTV)/(PVTV/TV), ...

...inspection for teletherapy and gamma stereotactic radiosurgery units. 35.655 ...Units, Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35.655 ...inspection for teletherapy and gamma stereotactic radiosurgery units. (a) A...

...2011-01-01 2011-01-01 false Periodic spot-checks for gamma stereotactic radiosurgery...Stereotactic Radiosurgery Units § 35.645 Periodic spot-checks for gamma stereotactic radiosurgery...proper operation of� (i) Treatment table retraction mechanism, using backup...

...of periodic spot-checks for gamma stereotactic radiosurgery units. 35.2645...of periodic spot-checks for gamma stereotactic radiosurgery units. (a) A licensee...record of each spot-check for gamma stereotactic radiosurgery units required by §...

Treatment planning techniques for stereotactic charged particle (helium ion) Bragg peak radiosurgery of intracranial vascular and other disorders are described. Stereotactic neuroradiological procedures (cerebral angiography, x-ray computed tomography (CT...

...units, teletherapy units, and gamma stereotactic radiosurgery units. 35.615 ...Units, Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35.615 ...units, teletherapy units, and gamma stereotactic radiosurgery units. (a) A...

...afterloader unit, teletherapy unit, or gamma stereotactic radiosurgery unit. 35.600 ...Units, Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35.600 ...afterloader unit, teletherapy unit, or gamma stereotactic radiosurgery unit. A...

... procedures that involve damaging the trigeminal nerve. Percutaneous stereotactic rhizotomy treats trigeminal neuralgia through the use of ... several minutes, the balloon and catheter are removed. Stereotactic radiosurgery (Gamma Knife, Cyberknife, LINAC) delivers a single ...

... the radiation dose around a cancer. As with stereotactic radiotherapy, IMRT uses multiple fields and angles to ... S. Chin. (2007) Robotics and its applications in stereotactic radiosurgery. Neurosurgica...

Search MedlinePlus Health Topics Drugs & Supplements Videos & Cool Tools ESPA�OL Stereotactic radiosurgery - discharge Printer-friendly version Email this page to a friend Share...

A number of characteristics of the interactions of charged particles with matter make them well-suited for stereotactic radiosurgery. The depth-dose distribution is characterized by the Bragg ionization peak. The Bragg Peak is too narrow for the treatment...

... doi: 10.1667/RR3529.1 Comparison of 125I Stereotactic Brachytherapy and LINAC Radiosurgery Modalities based on Physical ... Maj...

Stereotactic heavy-charged-particle Bragg peak radiosurgery has been used to treat 322 patients with surgically-inaccessible intracranial vascular malformations. (The clinical results of this method for the treatment of angiographically demonstrable arter...

At Lawrence Berkeley Laboratory, we have developed the method of stereotactic heavy-charged-particle (helium-ion) Bragg peak radiosurgery for treatment of surgically-inaccessible intracranial arteriovenous malformations (AVMs). This report describes patie...

... Change EF, et al. Predictors of efficacy after stereotactic radiosurgery for medial temporal lobe epilepsy. Neurology. 2010; ...

... Ang. (2007) Toward improving the therapeutic ratio in stereotactic radiosurgery: selective modulation of the radiation responses of ... ...

... on whom the head of the patient is immobilized using the stereotactic frame. ... of accuracy for irradiation and it uses contention frames and adapted ...

...units, teletherapy units, and gamma stereotactic radiosurgery units. 35.610 ...Units, Teletherapy Units, and Gamma Stereotactic Radiosurgery Units § 35.610 ...units, teletherapy units, and gamma stereotactic radiosurgery units. (a) A...

The role of radiosurgery in the management of pineal region tumors is still in its incipient stages, although over the past few years its use has expanded, both as a primary treatment modality and as an adjunct to conventional therapies. This article gives a detailed overview of the recent literature regarding the merits of stereotactic ...

This work addresses a method for obtaining an optimal dose distribution of stereotactic radiosurgery. Since stereotactic radiosurgery utilizes multiple noncoplanar arcs and a three-dimensional dose evaluation technique, many beam parameters and complex optimization criteria are included in the dose optimization. ...

The work suggested in this paper addresses a method for obtaining an optimal dose distribution for stereotactic radiosurgery. Since stereotactic radiosurgery utilizes multiple noncoplanar arcs and a three-dimensional dose evaluation technique, many beam parameters and complex optimization criteria are included in ...

Purpose: To report our clinical experiences with on-board imager (OBI) kV image verification for cranial stereotactic radiosurgery (SRS) and radiotherapy (SRT) treatments. Methods and Materials: Between January 2007 and May 2008, 42 patients (57 lesions) were treated with SRS with head frame immobilization and 13 patients (14 lesions) were treated with SRT ...

Stereotactic irradiation with the Leksell gamma knife (Elekta Instrument AB, Stockholm, Sweden) is one of the primary methods used for the stereotactic radiosurgery treatment of intracranial lesions. To assure the quality of the whole treatment procedure a proper dosimetric system is required. The polymer-gel dosimeter evaluated by ...

Stereotactic radiosurgery (SRS) is a way of treating brain disorders with a precise delivery of a single high dose of radiation in a one-day session. Treatment involves the use of focused radiation beams delivered to a specific area of the brain to treat abnormalities, tumors or other functional disorders. Body stereotactic ...

Stereotactic radiosurgery (SRS) is a special radiotherapy technique used to irradiate intracranial lesions by 3-D arrangements of narrow photon beams eliminating the needs of invasive surgery. Three different tertiary collimators, namely BrainLab and Radionics circular cones and BrainLab micro multileaf collimator (mMLC), are used for linear ...

The management of intracranial dural arteriovenous fistulas (DAVFs) is complex and may require a combination of various treatment techniques. Endovascular embolization has recently emerged as the primary definitive treatment modality. However, an increasing body of literature has supported the use of stereotactic radiosurgery as the sole therapeutic ...

Brain metastases, a major cause of disability and death in cancer patients, have limited treatment options, particularly for patients with surgically inaccessible or recurrent brain metastases, Stereoactic radiosurgery (SRS), a specialized form of radiati...

... VHL in the Brain and Spinal Cord Considering Stereotactic Radiosurgery Hearing Changes and VHL VHL and your ...

may be used to treat many other diseases and conditions. Brain and nervous system tumors: Brain metastases Acoustic neuroma and other head and neck (nasopharyngeal) cancers...

Brain Cancer; Neoplasm Metastasis; Cancer of Brain and Nervous System; Metastatic Malignant Neoplasm to Brain

... tracking for minimally invasive liver interventions * Began a new study of skin motion versus internal organ motion for stereotactic radiosurgery in ...

... 4) Gathered skin motion data on four patients during CyberKnife stereotactic radiosurgery treatments under an IRB-approved protocol. ...

... MLC based stereotactic radiosurgery, and other variants of IMRT, such as tomotherapy and intensity modulated arc therapy. 15 Page 26. ...

... fication and contouring of target axial dimensions using ... Moh87 R. Mohan, CS Chui, "Use of fast Fourier transforms in calculating dose distributions ...

The author discusses radiosurgical treatment of benign and malignant tumors, as well as cerebral arteriovenous malformations by closed stereotactically focused radiation beams or open implantation of radionuclides. The place of radiosurgery with brachytherapy is being defined. PMID:8028814

One of the more challenging problems of vascular neurosurgery is the management of surgically-inaccessible arteriovenous malformations (AVMs) of the brain. At Lawrence Berkeley Laboratory, we have developed the method of stereotactic heavy-charged-particl...

... Jackie Wu, Zhiheng Wang, John P. Kirkpatrick. (2009) Stereotactic Body Radiotherapy for Lesions of the Spine and ... Ang. (2007) Toward improving the therapeutic ratio in stereotactic radiosurgery: sele...

The purpose of this study was to develop an efficient and effective planning technique for stereotactic radiosurgery using helical tomotherapy. Planning CTs and contours of 20 patients, previously treated in our clinic for brain metastases with linac-based radiosurgery using circular collimators, were used to develop a robust ...

Purpose: To investigate the correlation between volume of brain irradiated by stereotactic radiosurgery (SRS) and the incidence of symptomatic and asymptomatic brain radionecrosis (RN). Methods and Materials: A retrospective analysis was performed of patients treated with single-fraction SRS for brain metastases at our institution. Patients with at least ...

PURPOSE: Whole-brain radiation therapy (WBRT) is the standard of care after resection of a brain metastasis. However, concern regarding possible neurocognitive effects and the lack of survival benefit with this approach has led to the use of stereotactic radiosurgery (SRS) to the resection cavity in place of WBRT. We report our initial experience using an ...

Internal gold fiducials are necessary for tracking the translational and rotational movements of target lesions during stereotactic radiosurgery. The fiducials are generally placed under image guidance in and around the lesions by interventional radiologists. Specific challenges are encountered during the procedure. This article discusses the basic ...

The development and scope of stereotactic radiosurgery is described. The technique, which combines well with the latest diagnostic methods, has already proved a safe and effective way of treating inaccessible cerebral lesions and in particular small arteriovenous malformations, acoustic neuroma and the solid component of craniopharyngioma, as well as ...

At Lawrence Berkeley Laboratory, we have developed the method of stereotactic heavy-charged-particle (helium-ion) Bragg peak radiosurgery for treatment of surgically-inaccessible intracranial arteriovenous malformations (AVMs). This report describes patient selection, treatment method, clinical and neuroradiologic results and complications encountered in ...

...with remote afterloader units, teletherapy units, and gamma stereotactic radiosurgery units. 35.2630 Section 35.2630 ...with remote afterloader units, teletherapy units, and gamma stereotactic radiosurgery units. (a) A licensee shall...

Stereotactic radiosurgery using a Gamma unit obtains good results for small intracranial diseases, arteriovenous malformation (AVM) and acoustic neurinoma. In stereotactic radiosurgery using a linear accelerator (LINAC), many fundamental problems are to be solved. 1) accuracy of a LINAC, 2) making the collimators ...

The search for efficacious, minimally invasive neurosurgical treatment has led to the development of the operating microscope, endovascular treatment, and endoscopic surgery. One of the most minimally invasive and exciting discoveries is the use of targeted, high-dose radiation for neurosurgical disorders. Radiosurgery is truly minimally invasive, delivering therapeutic energy ...

X-knife and gamma knife techniques are well-established for cranial stereotactic radiosurgery (SRS). Due to differences in their radiation delivery methods, some of the dosimetric parameters of these two techniques differ which may have clinical significance. There are many dosimetric studies comparing linear accelerator ...

The purpose of this study was to evaluate the efficacy and toxicity of a stereotactic radiosurgery boost as part of the primary management of a minimally selected population of patients with malignant gliomas. With a minimum follow-up of 1 year from radiosurgery, 7 (23%) of the patients are still living and 22 (73%) have died of ...

To review the safety and efficacy of linear accelerator-based stereotactic radiosurgery (SRS) for brainstem metastases. We reviewed all patients with brain metastases treated with SRS at DF/BWCC from 2001 to 2009 to identify patients who had SRS to a single brainstem metastasis. Overall survival and freedom-from-local failure rates ...

A technique employing single fraction neutron radiosurgery for treatment of intracranial vascular malformations has been developed at the University of Washington and is described in this report. The natural history of arteriovenous malformations of the brain is briefly reviewed, along with currently available therapeutic methods for treatment of these lesions. The ...

Stereotactic radiosurgery (SRS) refers to a single radiation treatment delivering a high dose to an intra-cranial target localized in three-dimensions by CT and/or MRI imaging. Traditionally, immobilization of the patient's head has been achieved using a rigid stereotactic head frame as the key step in allowing for accurate dose ...

...2011-01-01 false Records of periodic spot-checks for gamma stereotactic... § 35.2645 Records of periodic spot-checks for gamma stereotactic...timer termination, treatment table retraction mechanism, and...individual who performed the periodic spot-check and the...

Of the approximately 160 acoustic neuroma patients treated with stereotactic radiosurgery in the world up to 1987, 8 patients at UCLA Medical Center have had two or more magnetic resonance scans at least one year apart available for study (all 8 patients were treated with stereotactic radiosurgery for acoustic ...

The mechanism by which radiosurgery can stop the growth of some tumors is poorly understood, in part because postmortem neuropathological findings in patients have been reported only rarely. To define further the effects of radiosurgery, we present the correlation among clinical, neuroimaging, and neuropathological data in three patients with different ...

The first North American gamma knife for stereotactic radiosurgery of brain tumors and arteriovenous malformations entered the therapeutic armamentarium at the University of Pittsburgh (Pa) on August 14, 1987. In this article, we report our initial testing and subsequent experience with this technique. In the first 16 months of operation, 207 patients were ...

Purpose: We evaluated the role of Gamma Knife stereotactic radiosurgery in the multidisciplinary management of brain metastases from an undiagnosed primary cancer. Methods and Materials: Twenty-nine patients who had solitary or multiple brain metastases without a detectable primary site underwent stereotactic ...

Stereotactic heavy-charged-particle Bragg peak radiosurgery has been used to treat 322 patients with surgically-inaccessible intracranial vascular malformations. (The clinical results of this method for the treatment of angiographically demonstrable arteriovenous malformations (AVMs) and angiographically occult vascular malformations (AOVMs) of the brain ...

Full integration of advanced imaging, noninvasive immobilization, positioning, and motion-management methods into radiosurgery have resulted in fundamental changes in therapeutic strategies and approaches that are leading us to the treatment room of the future. With the introduction of image-guided radiosurgery (IGRS) systems, such as Trilogy{sup TM}, ...

Historically, the treatment for most intracranial pathologies has included medical management, surgery, radiotherapy and recently, stereotactic radiosurgery. Since its introduction, stereotactic radiosurgery has evolved from an investigational concept into a recognized neurosurgical procedure for the management of ...

Single-fraction stereotactic radiosurgery (SRS) and hypofractionated stereotactic radiotherapy (SRT) are radiation planning and delivery techniques used for the treatment of intracranial and spine/spinal cord tumors and targets. For cranial SRS and SRT, critical normal tissues/structures include the brainstem, cranial nerves, cochlea ...

Purpose: After preclinical investigations confirming the accuracy of target localization by frameless image-guided radiosurgery, we report the clinical outcomes of patients with brain metastases who underwent frameless radiosurgery. Methods and Materials: Between 2005 and 2006, 53 patients underwent frameless stereotactic ...

Cognitive/Functional Effects; Metastatic Cancer; Neurotoxicity; Radiation Toxicity; Unspecified Adult Solid Tumor, Protocol Specific

Stanford University Medical Center NEUROSURGERY TRAINING PROGRAM 2006 #12;NEUROSURGERY TRAINING PROGRAM GOALS AND CURRICULUM Introduction The Neurosurgery Training Program covers a period of four, stereotactic radiosurgery, and endovascular neurosurgery. Four of the six years after the PGY-I year are spent

Brain Metastasis; Bladder Cancer; Breast Cancer; Cervical Cancer; Colon Cancer; HEENT Cancer; Lung Cancer; Melanoma; Pancreatic Cancer; Prostate Cancer; Rectal Cancer; Sarcoma; Testicular Cancer

This paper outlines and implements a method of producing dose distributions that conform to any arbitrary, irregularly shaped target by means of dynamic conformal collimation using a multileaf collimator. The method may be summarized in three steps: produ...

...mathematically correct the outputs determined in paragraph (b)(1) of this section at intervals not exceeding 1 month for cobalt-60 and at intervals consistent with 1 percent physical decay for all other radionuclides. (f) Full calibration...

...material or any therapeutic dose of radiation from byproduct material...stereotactic radiosurgery: the total dose, treatment site, and values...and total source strength and exposure time (or the total dose). (c) A written...