After weeks of testing, the CNI will upgrade the scanner’s software to DV26 on Monday, Nov 12, 2017. All existing protocols will be migrated to the new platform, and we fully expect they will perform as they do on the current platform. Data will continue to be stored in NIMS as they are now as we continue to make progress on migrating NIMS to our new data management platform, Flywheel (more on that soon). Please contact us if you notice any issues with your protocol or data.
The DV26 interface will feel a whole lot like the current platform (DV25), so we don’t expect any of you to be disoriented when we switch. There are, however, some very minor differences that we want you to be aware of.
SAR limit settings. What follows are step-by-step instructions for setting the SAR limit in DV26 — note that these changes don’t affect most sequences:
- When starting an exam, in the dialog window for selecting operating mode the first level dB/dt and SAR limit are selected by default: you can click the “Accept” button directly to enter the exam unless you want to change the operating mode.
- By default the system will automatically run a “SAR Scout” scan for SAR limit calculation before the localizer in each exam. This scan will show up in the list of Task as series 0. The Scout is 6s long and doesn’t generate images.
Spectroscopy. If you are using spectroscopy sequences, please refer to the CNI wiki for a description of how to prescribe a rotated voxel acquisition. GE has committed to working on a solution which does not require this workaround, but we don’t yet have an expected date for when this will be available.
SMS BOLD and DTI. Our current SMS BOLD and DTI sequences (muxarcepi and muxepi2) will be available, and they will still work as in DV25. While the DV26 software supports the product SMS DTI sequence known as Hyperband DTI, we recommend users to continue using our research sequences until we have had the opportunity to fully evaluate the Hyperband DTI sequence.
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