MICROSOFT PROJECT ON ULTRASOUND MACHINES MANUAL

We did the movement using a manual linear interpolation method. Introduce artificial shift of objects of interest. No big difference because the phantom is MR incompatible CT image is a specialized form of x-ray imaging. We used GE 4 tesla MRI machine to get some MR images for the phantom we have.Р”В¬T stands for Computed Tomography. The MR images used to image internal structures of the body, particularly the soft tissues.

MRI stands for Magnetic Resonance Imaging.

MICROSOFT PROJECT ON ULTRASOUND MACHINES REGISTRATION

Processed the ultrasound image data to enable higher quality results from subsequent registration with other modalities. Converted the image data to formats that can be easily used in a wide variety of medical imaging systems. In this portion of work we have: Acquired updated ultrasound image data that better meets our requirements for working with objects of interest. sx file position data.Р”В«asic Objectives: Reduce background noise Segment (or at least highlight) object(s) of interest Approach: Stradx has some inbuilt segmentation/registration capabilities РІР‚вЂњ not used Used MATLAB to investigate feasible techniques that could later be integrated into a stand-alone system. Slice separation distance determined from. Region of Interest moves within resliced image between slices.Р”Р„t this point, we can treat our US data as a standard set of images, and export to other convenient formats sx file as РІР‚СљRawРІР‚Сњ 8-bit data into a medical imaging tool (xmedcon, osirix, 3d-slicer) dicom, Analyze) that can be read into other systems for processing (Prior to starting this project, it was thought that this was what we would have.)Р”В®xamples: 2-pass had problems with РІР‚Сљinter-passРІР‚Сњ alignmentР”Сћ Additional Tools (Provided as part of the Stradx distribution): SelectSX: (adjust for data too РІР‚СљdenseРІР‚Сњ) StackSX: (create evenly spaced, uniformly aligned slices) sxi file: Binary file of 8-bit pixel values What we need: 3D image data in РІР‚СљconventionalРІР‚Сњ format (e.g. sx file: Text-based file containing 3D positions, orientations, sizes, times, etc.

MICROSOFT PROJECT ON ULTRASOUND MACHINES PORTABLE

(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)Р”Р€D Ultrasound: Tracks 2D ultrasound probe to build 3D volume from ultrasound РІР‚СљslicesРІР‚Сњ 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.

MICROSOFT PROJECT ON ULTRASOUND MACHINES UPDATE

The central hypothesis is that deformation can be followed intra-operatively using ultrasound technology.Р”Р„pproaches 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, cheapР”В®valuate 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 Р РЋР С•Р Т‘Р ВµРЎР‚Р В¶Р В°Р Р…Р С‘Р Вµ Р С—РЎР‚Р ВµР В·Р ВµР Р…РЎвЂљР В°РЎвЂ Р С‘Р С‘ Р’В«Tracking Objects of Interest from CTMR Data using Dynamic 3D Ultrasound.pptР’В» РІвЂћвЂ“ 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

Microsoft project on ultrasound machines