Predictive Value of Dynamic Contrast Enhancement MRI on a Cerebral Tumor Response to Gamma Knife Treatment
Hypothesis: the pattern of MRI contrast enhancement after gadolinium injection is different in tumors that respond well to gamma knife.
We are going to acquire sequential T1-weighted images of brain lesions before, during and after injection of Gd-DTPA. This will be repeated before and after a treatment with gamma knife. We will then analyse our results to see if there are common enhancement characteristics between lesions that will respond well to the radiosurgery treatment. Response will be clinically assessed by tumor volume as determined by MRI approximately 4 to 6 months after treatment.
|Study Design:||Observational Model: Case-Only
Time Perspective: Prospective
|Official Title:||Prospective Study of Predictive Value of Dynamic Contrast Enhancement Magnetic Resonance Imaging With Gadolinium on the Response of a Cerebral Tumor to a Treatment With Gamma Knife|
- MRI parameters [ Time Frame: Before treatment with the Gamma Knife ]Tumor volume, Ktrans, ve, time at maximum signal enhancement, maximum signal difference, ADC, basal T1 value
|Study Start Date:||August 2005|
|Study Completion Date:||April 2008|
|Primary Completion Date:||April 2008 (Final data collection date for primary outcome measure)|
Please refer to this study by its ClinicalTrials.gov identifier: NCT00156585
|Faculté de médecine, Université de Sherbrooke|
|Sherbrooke, Quebec, Canada, J1H 5N4|
|Principal Investigator:||Jean Chenard, MD||Université de Sherbrooke|