sxi file: Binary file of 8-bit pixel values What we need: 3D image data in “conventional” format (e.g. sx file: Text-based file containing 3D positions, orientations, sizes, times, etc. (2-13 MHz) Pros: Non invasive Real time imaging Cons: Cannot image bony structures Poor native resolution Image depends on time to echo (pixel position) and echo strength (pixel intensity)ģD Ultrasound: Tracks 2D ultrasound probe to build 3D volume from ultrasound “slices” Can use conventional, portable ultrasound equipment to obtain 3D volumes Still relies on ultrasonic backscattering from tissue structures ? intrinsically noisy ? Image Processing becomes especially important High-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The central hypothesis is that deformation can be followed intra-operatively using ultrasound technology.Īpproaches to update the pre-op data: Intra-operative MR Obtain updated (lower-resolution) MR data Costly, significant setup time, OR compatibility considerations Finite Element modeling of surrounding tissues Challenges of parameter estimation Parameter variation with physiologic changes Long computation times Use 3D Ultrasound Convenient, safe, cheapĮvaluate the effectiveness, accuracy, and usefulness of any techniques that were used The overall objective of this proposal is to show feasibility and develop a cost-effective and efficient approach to monitor and predict deformation during surgery, allowing accurate, and real-time intra-operative information to be provided reliably to the surgeon. Changes: Shift Deformation Vascular movement
There is a critical need to update information based on changes occurring during surgery.
Problem Statement Background & Significance Overall Aims Methods Ultrasound MRI Registration Results Problems Solutions Competition Future Work Conclusion Group 6: Michael Shetliffe Mohammad Yaqub Mohammed Alam Содержание презентации «Tracking Objects of Interest from CTMR Data using Dynamic 3D Ultrasound.ppt» № Tracking Objects of Interest from CTMR Data using Dynamic 3D Ultrasound Problems, Proposed Solutions and Future Work Tracking Objects of Interest from CT/MR Data using Dynamic 3D
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