MRI in Assessing Hypoxia in Patients With Localized Prostate Cancer Undergoing Stereotactic Body Radiation Therapy
Recruitment status was Not yet recruiting
RATIONALE: Diagnostic procedures, such as MRI, may help measure oxygen levels in tumor cells. It may also help doctors predict a patient's response to treatment and help plan the best treatment.
PURPOSE: This clinical trial is studying how well MRI works in assessing hypoxia in patients with localized prostate cancer undergoing stereotactic body radiation therapy.
Procedure: blood-oxygen-level-dependent functional magnetic resonance imaging
Procedure: dynamic contrast-enhanced magnetic resonance imaging
Procedure: magnetic resonance spectroscopic imaging
Procedure: tissue-oxygen-level-dependent functional magnetic resonance imaging
|Study Design:||Primary Purpose: Diagnostic|
|Official Title:||Hypoxia Assessment in Localized Prostate Cancer: A Companion Protocol to a Phase II Study of Stereotactic Body Radiation Therapy (SBRT) for Low and Intermediate Risk Prostate Cancer|
- Status of global hypoxia within the prostate as assessed by blood-oxygen-level-dependent and tissue-oxygen-level-dependent MRI [ Designated as safety issue: No ]
- Tumor vasculature and metabolism within the prostate as assessed by dynamic contrast-enhanced MRI and magnetic resonance spectroscopic imaging [ Designated as safety issue: No ]
- Correlation of prostate and normal tissue hypoxia before treatment with clinical outcomes after treatment [ Designated as safety issue: No ]
|Study Start Date:||September 2009|
|Estimated Primary Completion Date:||September 2010 (Final data collection date for primary outcome measure)|
- To characterize the status of global hypoxia within the prostate before stereotactic body radiotherapy (SBRT) as assessed by blood-oxygen-level-dependent and tissue-oxygen-level-dependent MRI.
- To characterize tumor vasculature and metabolism within the prostate before SBRT as assessed by dynamic contrast-enhanced MRI and magnetic resonance spectroscopic imaging, respectively.
- Correlate prostate and normal tissue hypoxia before SBRT with clinical outcomes (toxicity and biochemical [PSA] control) after SBRT.
OUTLINE: Within 1-3 weeks before beginning stereotactic body radiotherapy, patients undergo T2-weighted anatomic MRI, magnetic resonance spectroscopic imaging, blood-oxygen-level-dependent and tissue-oxygen-level-dependent MRI, and dynamic contrast-enhanced MRI.