Feasibility and Safety Study Using Preoperative High-Dose Single-Fraction Image-Guided Radiotherapy for Men Undergoing Radical Prostatectomy at High-Risk for Extraprostatic Cancer
Summary
This study is being done to test the safety of a single high-dose of radiation therapy before radical prostatectomy (removal of the prostate). The investigators want to find out what effects, good and/or bad, the radiation will have on men undergoing prostatectomy. The investigators are especially interested in men who are at risk for having cancer cells that have spread outside the prostate.
Study Design
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Conditions
Prostate Cancer
Intervention
High-Dose Single-Fraction Image-Guided Radiotherapy for Men Undergoing Radical Prostatectomy
Location
Memorial Sloan Kettering Cancer Center
New York
New York
United States
10065
Status
Recruiting
Source
Memorial Sloan-Kettering Cancer Center
Results (where available)
Links
- Source: http://clinicaltrials.gov/show/NCT01163448
- Information obtained from ClinicalTrials.gov on July 15, 2010
Published on BioPortfolio: 2014-08-27T03:12:11-0400
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Medical and Biotech [MESH] Definitions
Radiotherapy, Conformal
Radiotherapy where there is improved dose homogeneity within the tumor and reduced dosage to uninvolved structures. The precise shaping of dose distribution is achieved via the use of computer-controlled multileaf collimators.
Radiotherapy, Intensity-modulated
CONFORMAL RADIOTHERAPY that combines several intensity-modulated beams to provide improved dose homogeneity and highly conformal dose distributions.
Radiotherapy, Image-guided
The use of pre-treatment imaging modalities to position the patient, delineate the target, and align the beam of radiation to achieve optimal accuracy and reduce radiation damage to surrounding non-target tissues.
Angiography, Digital Subtraction
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
Mice, Inbred Sencar
Mice selectively bred for hypersusceptibility to two-stage chemical skin carcinogenesis. They are also hypersusceptible to UV radiation tumorigenesis with single high-dose, but not chronic low-dose, exposures. SENCAR (SENsitive to CARcinogenesis) mice are used in research as an animal model for tumor production.
