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Intensity-Modulated External Beam Radiation Therapy in Treating Patients With Prostate Cancer

2014-08-27 03:13:54 | BioPortfolio

Summary

RATIONALE: Radiation therapy uses high-energy x-rays and other types of radiation to kill tumor cells. Specialized radiation therapy, such as intensity-modulated radiation therapy, that delivers a high dose of radiation directly to the tumor may kill more tumor cells and cause less damage to normal tissue.

PURPOSE: This clinical trial studies intensity-modulated external beam radiation therapy in treating patients with prostate cancer.

Description

PRIMARY OBJECTIVES:

I. To demonstrate that patients can safely receive IMRT teletherapy using the proposed IMRT fractionation schedule without experiencing a treatment limiting toxicity.

SECONDARY OBJECTIVES:

I. To assess treatment efficacy through the surrogate measures of PSA nadir and biochemical failure-free survival.

OUTLINE: Patients undergo hypofractionated intensity modulated radiotherapy once daily, 5 days a week, for 6 weeks in the absence of disease progression or unacceptable toxicity. Patients with intermediate- and high-risk disease may also receive concurrent and adjuvant or long-term androgen deprivation therapy for up to 36 months. After completion of study treatment, patients are followed at 4-6 weeks, every 4 months for 3 years, every 6 months for 2 years, and then annually until year 5.

Study Design

Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Adenocarcinoma of the Prostate

Intervention

intensity modulated external beam radiation therapy

Location

Southside Regional Medical Center
Petersburg
Virginia
United States
23805

Status

Recruiting

Source

Virginia Commonwealth University

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:54-0400

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Medical and Biotech [MESH] Definitions

CONFORMAL RADIOTHERAPY that combines several intensity-modulated beams to provide improved dose homogeneity and highly conformal dose distributions.

The use of an external beam of PROTONS as radiotherapy.

An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.

Tissue ablation of the PROSTATE performed by ultrasound from a transducer placed in the RECTUM. The procedure is used to treat prostate cancer (PROSTATIC NEOPLASMS) and benign prostatic hypertrophy (PROSTATIC HYPERPLASIA).

Chemical analysis based on the phenomenon whereby light, passing through a medium with dispersed particles of a different refractive index from that of the medium, is attenuated in intensity by scattering. In turbidimetry, the intensity of light transmitted through the medium, the unscattered light, is measured. In nephelometry, the intensity of the scattered light is measured, usually, but not necessarily, at right angles to the incident light beam.

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