2011 Summer Project Week Needle Detection to Control Scanner for Prostate Biopsy

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Needle Detection to Control Scanner for Prostate Biopsy

Key Investigators

• Brigham and Women's Hospital: Atsushi Yamada, Loïc Cadour, Junichi Tokuda and Nobuhiko Hata

Objective

1. For showing MRI which will be taken in realtime at a tip of the needle to a surgeon in prostate biopsy, we will track the tip of the needle and control the scanner by using the tracked position data automatically.

Approach, Plan

1. Tracking: Develop a tracking program by using OpenCV
2. Control: Develop a server to send the tracked position data to 3D Slicer
3. Receiver: Develop a receiver to obtain MRI from a scanner

Progress

1. I received raw images from a scanner simulator and showed the received image on the 3D view of Slicer by using OpenCV.
2. For sending the tracked position of the tip of a needle of a prostate biopsy, I modified transform matrix in using process timer event.
3. For an experimental movie, the tracking of the tip of the needle was executed.
4. For an clinical case movie, a low pass and high pass filter was implemented and tested to detect the tip of the needle easily.

References