Abstract #0504

Gradient echo signal decay of bone material at high field requires a gaussian augmentation of the mono-exponential model for T2* determination

Weiqiang Dou¹ and Arend Heerschap¹

¹Radiology, Radboud University Medical Centre, Nijmegen, Netherlands

Previously reported T₂^*quantification for calcium phosphate cement (CPC), a widely used bone material, remained unsatisfactory with a mono-exponential (ME) fit. A recently proposed Gaussian augmentation of the mono-exponential (GAME) model was reported to have robust fit for gradient echo (GRE) signals. To accurately evaluate GRE-signal decay of CPC, GAME and ME fits were applied in this study for multi-echo time GRE signals acquired at 11.7T. Compared to ME, GAME showed optimal fitting with significantly smaller sum of squared errors and larger R-squared values. Therefore, GAME model is demonstrated to be suitable for GRE signal modeling in CPC at ultra-high field.

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.