نتایج جستجو برای: stereotactic radiotherapy
تعداد نتایج: 69462 فیلتر نتایج به سال:
Purpose: Bevacizumab is associatedwith decreased vascular permeability that allows formore aggressive radiotherapy schedules. We conducted a phase II trial in newly diagnosed glioblastoma utilizing a novel hypofractionated stereotactic radiotherapy (HFSRT) schedule combined with temozolomide and
Introduction Polymer gel dosimeters offer a practical solution to 3D dose verification for conventional radiotherapy as well as intensity-modulated and stereotactic radiotherapy. In this study, EGSnrc calculated and PAGAT polymer gel dosimeter measured dose profiles from single shot irradiation with 18 mm collimator of Gamma Knife in homogeneous and inhomogeneous phantoms were compared with eac...
Submitted Volumetric modulated arc therapy for stereotactic body radiotherapy: Planning considerations, delivery accuracy and efficiency
The aim of this study was to assess survival and prognostic factors of 98 consecutive patients with unresectable glioblastoma multiforme (GBM) after stereotactic biopsy. Patients were diagnosed between 1993 and 1998, and the treatment modality subsequent to stereotactic biopsy was determined by the year of diagnosis. Before 1995, patients did not receive further specific therapy after stereotac...
Thirty five patients presenting with epilepsy alone and non-enhancing low-density lesion on the CT scan underwent a computer-assisted CT-guided stereotactic biopsy with stereotactic angiographic control. There was no mortality or morbidity in this series and the diagnostic yield was 97%. Thirty four patients had low grade intra-axial neoplasms. After an estimation of the pathological extent of ...
INTRODUCTION Stereotactic radiotherapy has been majorly applied to the intracranial targets as primary or metastatic brain tumors, benign tumors, vascular malformations as arteriovenous malformations(AVM) or angiographically occult vascular malformations(AoVM), and functional neurologic diseases as neuralgias since 1951, when Dr. Leksell, a Swedish neurosurgeon, used radiation making intentiona...
S tereotactic pertains to a precise positioning in space. Stereotactic radiotherapy is a successful noninvasive modality for treating intracranial malignancies. Stereotactic radiosurgery was developed as a noninvasive tool to allow access to areas of the head that were previously treated by traditional surgical methods with a high rate of morbidity. As radiotherapy was refined, different stereo...
Optic nerve sheath meningiomas (ONSMs) are rare tumors of the anterior visual pathway and constitute approximately 2% of all orbital tumors and 1-2% of all meningiomas. Untreated ONSMs almost always lead to progressive visual decline, color blindness, and finally complete loss of vision. Although resection is warranted in cases of widespread ONSM, surgery can lead to significant morbidity. Rece...
The role for local ablative therapies in the management paradigm of oligometastatic liver disease is increasing. The evidence base supporting the use of stereotactic body radiotherapy for liver metastases has expanded rapidly over the past decade, showing high rates of local control with low associated toxicity. This review summarises the evidence base to date, discussing optimal patient select...
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