Linac-Based Fractionated Stereotactic Radiotherapy with a Micro-Multileaf Collimator for Brainstem Metastasis

Comparison of multileaf collimator and conventional circular collimator systems in Cyberknife stereotactic radiotherapy

Multileaf collimator (MLC) technology has been newly introduced with the Cyberknife system. This study investigated the advantages of this system compared with the conventional circular collimator (CC) system. Dosimetric comparisons of MLC and CC plans were carried out. First, to investigate suitable target sizes for the MLC mode, MLC and CC plans were generated using computed tomography (CT) i...

Radiochromic Film Dosimetry of Small Irregular Fields Shaped by a Micro-multileaf Collimator for Stereotactic Radiosurgery

Re-irradiation with hypo-fractionated stereotactic robotic radiotherapy for salvage in adult patients with brainstem glioma

PURPOSE Brainstem glioma (BSG) is often treated with definitive irradiation. However, subsequent progression and death occur as a rule rather than the exception, after varying periods of control. The outlook of patients with post-irradiation progression is dismal, and most of these patients are treated with supportive care alone. Despite the obvious risks with an area as critical as the brainst...

Investigation of irradiated volume in linac-based brain hypo-fractionated stereotactic radiotherapy

BACKGROUND Emerging techniques such as brain hypo-fractionated radiotherapy (HF-RT) involve complex cases with limited guidelines for plan quality and normal tissue tolerances. The purpose of the present study was to statistically parameterize irradiated volume independently of dose prescription, or margin to determine what spread in achievable irradiated volume one may expect for a given case....

Linac-based stereotactic radiotherapy and radiosurgery in patients with meningioma

BACKGROUND It was our purpose to analyze long-term clinical outcome and to identify prognostic factors after Linac-based fractionated stereotactic radiotherapy (Linac-based FSRT) and stereotactic radiosurgery (SRS) in patients with intracranial meningiomas. MATERIALS AND METHODS Between 10/1995 and 03/2009, 297 patients with a median age of 59 years were treated with FSRT for intracranial men...