Visualization Tool for Investigation of Breast Lesions
Magnetic resonance imaging (MRI) is commonly used for the detection of breast lesions in genetically high-risk women due to its high sensitivity. As non-cancerous conditions including normal changes due to a woman's menstrual cycle may have the appearance of cancer on MR images, a biopsy (generally performed under ultrasound-guidance) of the suspicious mass is required for definitive diagnosis. However, only a limited percentage of MRI-visible lesions are also visible on ultrasound (US). Even if found, it is often unclear whether the lesion identified on US corresponds to the MRI-detected lesion in question. The investigators have developed a visualization tool to assist the visualization of MRI-detected lesions in US-guided procedures (e.g., biopsy). This tool provides a simultaneous display of the previously acquired MRI data alongside real-time US images. The investigators propose a pilot study to assess the usefulness of this tool in identifying MRI-detected lesions using real-time US-guidance.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Evaluation of a New Multi-modality Visualization Tool for Investigation of Breast Lesions|
- Target identification success: this outcome measure is a 'yes/no' outcome, indicating whether or not an MRI-detected lesion could be successfully visualized using US-guidance in the supplemental US exam [ Time Frame: Time of examination ] [ Designated as safety issue: No ]
- Confidence scale for lesion visualization This is a 5-point scale: 1 - very low confidence; 2 - low confidence; 3 - ambiguous; 4 - confident; 5 - very confident [ Time Frame: Time of examination ] [ Designated as safety issue: No ]
|Study Start Date:||July 2009|
|Study Completion Date:||July 2011|
|Primary Completion Date:||July 2010 (Final data collection date for primary outcome measure)|
Real-time US imaging with simultaneous display of dynamically corresponding MR images (from a previous MRI screening) will be used to re-locate the lesion previously reported as occult under a second-look ultrasound screening.
|Sunnybrook Health Sciences Centre|
|Toronto, Ontario, Canada, M4N 3M5|
|Principal Investigator:||Petrina Causer, MD||Sunnybrook Health Sciences Center|