Abstract #1938

Relaxation Times and Magnetic Susceptibility of Human Umbilical Cord Blood at 3 Tesla

Sharon Portnoy¹, Natasha Milligan², Mike Seed^3,4, John G. Sled^1,5, and Christopher K. Macgowan^1,6

¹Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada, ²Department of Obstetrics and Gynecology, Mount Sinai Hospital, Toronto, ON, Canada, ³Department of Pediatrics and Diagnostic Imaging, University of Toronto, Toronto, ON, Canada, ⁴Division of Cardiology, The Hospital for Sick Children, Toronto, ON, Canada, ⁵Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON, Canada, ⁶Department of Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, ON, Canada

With an increasing proportion of fetal cardiovascular MRI scans being performed at 3 Tesla, there is growing need for an accurate calibration, which characterizes relationships between MRI properties (T₁, T₂, susceptibility) and blood properties (oxygen-saturation, sO₂ and hematocrit, Hct) at 3T. Accordingly, relaxometry measurements were performed at 3T on cord blood specimens (N=89) with a broad range of hematocrits (0.09<Hct<0.82) and oxygen-saturations (7%<sO₂<100%). We also measured fetal blood susceptibility, which, to our knowledge, has never been reported. The data were effectively described by a simple, two-compartment model for blood.

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.