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Abstract #1862

Compatible Dual-Echo Arteriovenography (CODEA) Using an Echo-Specific K-Space Reordering Scheme

Sung-Hong Park1,2, Chan-Hong Moon1, Kyongtae Ty Bae1,2

1Radiology, University of Pittsburgh, Pittsburgh, PA, USA; 2Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA

Compatible dual-echo arteriovenography (CODEA) was developed to simultaneously acquire a time-of-flight MR angiogram (MRA) and a blood-oxygenation-level-dependent MR venogram (MRV) in a single acquisition at 3T. In this method, an echo-specific K-space reordering scheme was employed to uncouple the scan parameter requirements for the MRA and MRV. The MRA/MRV vascular contrast was enhanced by maximally separating the K-space center regions of the two echoes and by adjusting and applying scan parameters compatible between them. As a preliminary result, CODEA MRA/MRV could be acquired simultaneously with image quality comparable to that of the conventional single echo MRA/MRV separately acquired at two sessions.