Seminar 2006 10 18 Image Guided Needle Insertion
From CISSTwiki
CISST ERC Seminar
Toward Closed-Loop Image-Guided Needle Insertion for Targeted Percutaneous Interventions
Date: Wednesday, October 18, 2006
Time: 12:00pm, Lunch will be served before the seminar.
Place: Maryland Hall 110
Speaker: Simon DiMaio
Surgical Planning Laboratory
Department or Radiology, Brigham and Women's Hospital
Harvard Medical School
Title: Toward Closed-Loop Image-Guided Needle Insertion for Targeted Percutaneous Interventions
Presentation slideshow:
PDF format, 12MB
PPT format in ZIP file with videos, 111MB
The event will be Podcasted
Abstract:
A key issue in typical image-guided interventions is the correspondence between the surgical plan in the image space and the execution of this plan in the physical space. A variety of stereotactic guidance systems and robotic instrument placement mechanisms have been developed in an attempt to address this issue; however, with rapid advances in medical imaging and image processing technologies, greater demands have been placed on targeting accuracy. In the context of percutaneous interventions in soft tissues (e.g., prostate and breast) the accuracy of anatomical target specification currently exceeds the precision with which needles can be placed, due to poor visualization, needle deflection, tissue deformation, and target motion. MRI has recently been shown to exhibit significant value in the detection and characterization of breast and prostate cancer, due to its excellent sensitivity to soft-tissue contrast, as well as its multi-parametric and multi-planar imaging capabilities. However, the positive predictive value of biopsy in MRI-detected lesions has been shown to decrease significantly for lesions smaller than 5mm. At this scale, existing biopsy techniques—wire-guided and core needle biopsy—are extremely limited in their ability to accurately sample a visible target. This also severely limits the validation of MRI-based detection and screening methods by correlation of image-based diagnosis with histological findings.
In this talk, I will present our ongoing work toward closed-loop, image-guided needle placement for targeting soft-tissue lesions less than 5mm in diameter. This work is being done in collaboration with the CISST group at Johns Hopkins University, as well as Burdette Medical, AIST Japan and Karlsruhe University, Germany. Together we are developing real-time multiplanar Magnetic Resonance Imaging methods for interventional feedback, robotic mechanisms for in-bore needle positioning, as well as biomechanical needle manipulation and steering models for needle control. Past, present and future work will be presented.
Bio:
Simon DiMaio received a B.Sc. degree in Electrical Engineering from the University of Cape Town, South Africa, in 1995. He completed the M.A.Sc. and Ph.D. degrees in Electrical and Computer Engineering at the University of British Columbia, Canada, in 1998 and 2003 respectively. Dr. DiMaio is currently an Instructor of Radiology at the Harvard Medical School and the Brigham and Women’s Hospital in Boston, where for the past two years he has been involved in the development of systems for robot-assisted, MRI-guided percutaneous therapy, as well as systems for neuroendoscopic navigation. He has experience in topics ranging from signal processing to robotics and control systems. Selected research interests include: real-time control of dynamic systems, image-guided surgical systems, haptics, medical simulation and the modeling of physical systems.