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Volumetric Modulated Arc Therapy (VMAT) for Brain Metastases

2014-08-27 03:16:46 | BioPortfolio

Summary

Radiotherapy to the whole brain is standard treatment for cancer that has spread to the brain (brain metastases) as it treats both the metastases that can be seen on scans and the brain metastases that are too small to be seen on scans.

This study will use a novel radiotherapy technique, called volumetric modulated arc therapy (VMAT), to treat patients with brain metastases. This technique allows delivery of both a standard radiation dose to the whole brain as well as a higher radiation dose to the brain metastases at the same time.

The study will assess the effectiveness of using VMAT in treating brain metastases, and examine its potential side-effects.

Description

This is a Phase II prospective clinical trial. Following registration, patients will be required to undertake a baseline questionnaire assessment of daily living activities using the Modified Barthel's index, as well as cognitive assessment using MMSE.

Patients will undergo MRI scan of the brain for radiotherapy planning purposes. During radiotherapy planning and for each of the five radiotherapy fractions, patients will be immobilised in a custom fitted stereotactic mask system, to minimise head movement. During treatment, patients will have daily online setup corrections to ensure treatment accuracy.

Patients will be treated with WBRT/SIB using VMAT, delivering a total of 20 Gy in 5 fractions to the whole brain and 50Gy in 5 fractions to the brain metastases, delivered once daily on working days. Anti-nausea and anti-inflammatory medication will be prescribed to minimise acute toxicity.

Following therapy completion, patients will be seen every 3 months for the 1st year, then every 6 months thereafter. At each clinic visit, clinicians or study investigators will monitor for toxicity from therapy, document neurologic symptoms and signs and performance status as well as Modified Barthel's index and cognitive assessment.

Patients will have contrast-enhanced MRI brain at 3 months and 1 year, and contrast-enhanced CT brain at 6 months and 9 months in the first year and every 6 months after the first year. Serum creatinine levels will be done prior to each scan to ensure safety of intravenous contrast administration.

Study Design

Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Brain Metastases

Intervention

whole brain radiotherapy (WBRT) and a simultaneous integrated boost (SIB) using volumetric modulated arc therapy

Location

BC Cancer Agency - Vancouver Centre
Vancouver
British Columbia
Canada
V5Z 4E6

Status

Not yet recruiting

Source

British Columbia Cancer Agency

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:16:46-0400

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Correction: Evaluation of Acute Toxicity and Early Clinical Outcome in Head and Neck Cancers Treated With Conventional Radiotherapy and Simultaneous Integrated Boost Arc Radiotherapy.

[This corrects the article DOI: 10.14740/wjon1049w.].

Medical and Biotech [MESH] Definitions

Antineoplastic agent especially effective against malignant brain tumors. The resistance which brain tumor cells acquire to the initial effectiveness of this drug can be partially overcome by the simultaneous use of membrane-modifying agents such as reserpine, calcium antagonists such as nicardipine or verapamil, or the calmodulin inhibitor, trifluoperazine. The drug has also been used in combination with other antineoplastic agents or with radiotherapy for the treatment of various neoplasms.

Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

The total amount of radiation absorbed by tissues as a result of radiotherapy.

The simultaneous, or near simultaneous, transference of heart and lungs from one human or animal to another.

A concept, developed in 1983 under the aegis of and supported by the National Library of Medicine under the name of Integrated Academic Information Management Systems, to provide professionals in academic health sciences centers and health sciences institutions with convenient access to an integrated and comprehensive network of knowledge. It addresses a wide cross-section of users from administrators and faculty to students and clinicians and has applications to planning, clinical and managerial decision-making, teaching, and research. It provides access to various types of clinical, management, educational, etc., databases, as well as to research and bibliographic databases. In August 1992 the name was changed from Integrated Academic Information Management Systems to Integrated Advanced Information Management Systems to reflect use beyond the academic milieu.

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