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Design a phantom for use in an MR imager to calibrate T2 relaxation value to water concentration in a gell over a range of 70 - 90%.
Picture of an MR phantom currently used in the UW Department of Radiology for an alternative purpose:
Team Photo
Pictures from left to right: Can Pi, Andrea Zelisko, Missy Haeh, Ben Sprague
Last semester’s design and final product:
Our phantom prototype design can be seen modeled in the following picture. We hope to have this phantom constructed by an outside source to ensure proper fabrication.
Data from Gadolineum samples and curve to fit:
Gelatin and Acrylamide samples were scanned in the MR machine (see image below). The data was analyzed and gelatin was selected as the gel for our design based on T2 values closer to the desired range.
| Week | Reporting Period Beginning | Activities |
|---|---|---|
| 1 | September 8 | Contacted client, reviewed information learned over summer, discussed possibilites for design |
| 2 | September 15 | Set up meeting with client, discussed hydrogel procedure, met with advisor |
| 3 | September 22 | Met with client, plastic samples for Standard Imaging were tested and did show up on the scanner, current design was revised and improved upon |
| 4 | September 29 | Made acrylamide and gelatic hydrogels, will look to make alginate and agarose gels, more research on existing phantoms |
| 5 | October 6 | Alginate gels were made, research on materials and construction for phantom, received gadolinium from client, gave client gels to test, worked on mid-semester presentation |
| 6 | October 13 | Midsemester design presentation, prototype construction, more gels, set up meeting with client |
| 7 | October 20 | Made more gels (gelatin and acrylamide), finalized design before contacting companies to make, set up meeting with client to do imaging |
| 8 | October 27 | Met with client to discuss our project and our prototype, will begin contacting companies, working on adding GAGs to gels |
| 9 | November 3 | Finished specifics on design, contacting companies and deciding on where to construct, ordering GAGs and making gels |
| 10 | November 10 | Attended human subjects training, met with client, discussed goals, plan to analyze MR data, need name for phantom |
| 11 | November 17 | Met with group and discussed what we needed to have accomplished by the final presentation, discussed what we were going to do about our phantom and how to construct it, attempted to get a gel scan but results were not good |
| 12 | November 24 | Thanksgiving Weekend! Worked on poster and presentation, scanned gel samples in MR and obtained and analyzed results |
| 13 | December 1 | We were supposed to have presentations but due to a building leak these were postponed. We worked on the paper, created gel samples with GAGs, and dealt with construction of our prototype |
| 14 | December 8 | We finished the paper and updated the website and PDS, we attempted to have our gel samples (with GAGs) scanned, worked on prototype construction, practiced our presentation |
| 15 | December 15 | Design is over for the semester! Winter Break |
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PDS (Sep 23 2005, 107 kb) |
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Midsemester Presentation (Oct 11 2005, 1093 kb) |
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Final Poster Presentation (Dec 7 2005, 2792 kb) |
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Final Paper (Dec 7 2005, 298 kb) |
