Table of Contents
HUP 6
The HUP 6 facility contains the TIM-compatible, 3 Tesla scanner used for most of our neuroscience MR imaging studies.
Head Coils
There are two head coils manufactured by Siemens that are used for our neuroscience imaging: an 8-channel and a 32-channel coil.
Visual projection system
The projector is a Sanyo XTRAX PLC xt35 { User's Manual } { Technical Specs } is located back of the scanner room. The connector is a VGA:
The projector is aimed at a front-surface mirror, angled to direct into the bore of the scanner. A translucent back-projection screen is positioned at the end of the bore.
After use, power down the projector first. Turn off power to the enclosure box at least 15 minutes later, to allow the projector to completely cool.
The video projection on the back-projected screen is 38.1 x 30.0 cms. For canine subjects in the multi-channel knee coil, the screen has a distance of 113.3 cms from the eyes. Therefore, the projection subtends 19.1 degrees horizontal x 15.2 degrees vertical.
Projector Calibration
For control of stimulus display, the spectral properties of the projector must occasionally be measured. This calibration is conducted using the PhotoResearch PR-650 device from the Brainard Lab. The general calibration technique is described on the Brainard Lab Wiki. For the HUp6 site, the PR-650 is set on a tripod outside of the scanner room, aimed at the back-projection screen. Lights in the scanner and control room are turned off, as is the light within the bore of the scanner. Lights are turned off within the control room. The Intel-based Mac PowerBook that is used for stimulus presentation is also used to run the calibration procedure. The CalibrateMonSpd routine was used. The resulting file is stored in:
/Users/Shared/Toolboxes/PsychCalLocalData/GlenoldenMRI.mat
Calibration has been conducted on these occasions and under these conditions:
| Date | Operator(s) | Calibration target and notes | Link to cal file | Spectral plot |
|---|---|---|---|---|
| 09-02-2010 | GKA, CB, LB | Calibration of Sanyo projector. Settings reset, brightness set to 63, no filter in optical path. The monitor settings for the projector on the laptop were set to 1024×768 at 60 Hz. Used mglCalMonSpd. | HUP6 calibration.mat | |
| 06-16-2011 | DB, AP | Calibration of Sanyo projector. Reset to factory settings. “Smoked glass” neutral density filter in place in the optical path. Room and bore lights off. Used mglAnalyzeMonCalSpd. | HUP6 information | |
| 09-30-2012 | DB, MGM, MS | Calibration of Sanyo projector. Reset to factory settings and rear projection. “Smoked glass” neutral density filter in place in the optical path. Room and bore lights off. Used mglCalibrateAguirreLab in toolboxes/mglToolbox/Calibration on Brainard Lab SVN. |
Directions to HUP6
- Enter the Gates building entrance on Spruce
- Go down stairs and walk forward into Founders until corridor turns right
- Keep walking through to Rhoads
- Corridor will turn left then right, and you should then see an elevator on your left
- Go down to the basement