Feature Of The Week 10/23/11: Hybrid Intraoperative Probe Based on OCT and Positron Detection for Ovarian Cancer Detection
Multi-modality imaging involving OCT and one or more additional imaging technologies continues to show very promising results for increasing the diagnostic and interventional guidance capability of biomedical imaging probes. These synergistic effects have been published in numerous papers over the past year. This includes OCT in combination with fluorescence, Raman, NIR, ultrasound, and other technologies. Such approaches have the obvious disadvantage of increasing the cost and complexity of the imaging system but often that burden is offset by significantly increased performance. Recently a group from the University of Connecticut published a paper on a hybrid intraoperative probe that used OCT in combination with positron detection and applied that technology for ovarian cancer detection. Below is a summary of that work.
Ovarian cancer has the lowest survival rate of the gynecologic cancers because it is predominantly diagnosed in the late stages due to the lack of reliable symptoms and efficacious screening techniques. A novel hybrid intraoperative probe has been developed and evaluated for its potential role in detecting and characterizing ovarian tissue. The hybrid intraoperative dual-modality device consists of multiple scintillating fibers and an optical coherence tomography imaging probe for simultaneously mapping the local activities of 18F-FDG uptake and imaging of local morphological changes of the ovary. Ten patients were recruited to the study and a total of 18 normal, abnormal and malignant ovaries were evaluated ex vivo using this device. Positron count rates of 7.5/8.8-fold higher were found between malignant and abnormal/normal ovaries. OCT imaging of malignant and abnormal ovaries revealed many detailed morphologic features that could be potentially valuable for evaluating local regions with high metabolic activities and detecting early malignant changes in the ovary. These initial results have demonstrated that our novel hybrid imager has great potential for ovarian cancer detection and characterization during minimally invasive endoscopic procedures.
For more information see recent Article. Courtesy Quing Zhu.