Progress Report: Week 2
Overview:
We have decided that we will use an optical vibrometer to determine the vibration within the fMRI scanner. After getting a quote from MetroLaser, the team along with Dr. Devor’s team has decided to continue searching for a different supplier. Our main focus right now is determining the vibration and finding a method to damp the vibration
We will keep most of the previous model design, slightly changing the fMRI coil assembly to make the optical fiber accessible. As well as any changes necessary for the damping system.
Also, at our sponsor meeting last week, it has been determined that the optical fiber will not be implanted into the mouse cerebral cortex. Therefore an assembly is needed to be able to control the X and Y position of the fiber, so that it hangs in front of the mouse’s head.
Accomplishments from Previous Week:
Dr Devor has determined the optical fiber to be used. The same MR coil used in the rat cradle will be used in the mouse cradle. Created a report of design options to the components in the cradle. Determined the index number for Dr Devor’s lab.
Goals for Next Week:
Get quotes for alternative vibrometers (Kristen)
Find/order a mock bore (Kristen)
Update report for optical fiber assembly (Calvin)
Email Isaiah index number (Alex)
Determine some material to thicken the fiber so it becomes easier to handle
-- Discuss where the fiber should be held/insulated (Femi)
Order PVC plastic and Delrin to machine the assembly (Alex)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments:
Femi and Kristen met with Dr. Devor and Hana on Friday (4/6), topics discussed were
The optical fiber has been determined; Dr. Devor’s lab will order all materials necessary for the optical fiber. Everyone in the group has educated themselves on the specs for the fiber.
The component report needs to be updated to include an assembly that can position the fiber in the X and Y directions within a certain distance of the specimen’s head.
The quote for the MetroLaser LDV system is too expensive, we should continue to determine prices for other systems. However, we will keep the MetroLaser system in mind.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments:
The Weekly Progress report needs to be more detailed in the Goals, Accomplishments, and Risks & Concerns sections
Alternative ideas for frequency measurement included a simple pointer laser and reflective material, maybe prism, which could then be photographed or videotaped with the high-speed camera. Alternatively, a photo-sensor and detector system could be made. We have looked into a simple LDV system and how we could implement that with the scanner.
Risks and Areas of Concern:
If we will be able to find a vibrometer system within budget, if not we can use an alternative system with a laser diode
Schedule:
Upcoming milestone is to have a soft model of the assembly, which we already have but will update with the new optical fiber assembly.
Budget:
We have not purchased anything thus far.
Progress on Report and Webpage:
Femi has been updating webpage.