On the influence of scanner vibrations on ADC in apparent exchange rate measurements

Due to the strong gradients used for diffusion weighting, vibrations still play an important role in measuring the apparent diffusion coefficient (ADC). The effect of vibrations on ADC measurements was investigated in an apparent exchange rate measurement with two diffusion weightings. A wooden frame was built that enables us to place the phantoms (suspensions of yeast in water) inside the scanner without direct physical contact. The standard deviation over six gradient directions is approximately reduced by a factor one half, while the ADC, calculated in a ROI, remains nearly unchanged. ADC maps are more homogenous using the wooden frame.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.