Skip to main content
Figure 1 | Journal of Cardiovascular Magnetic Resonance

Figure 1

From: High-resolution spin-echo Cardiac Diffusion-Weighted MRI with motion compensated Convex Optimized Diffusion Encoding (CODE)

Figure 1

cDWI pulse sequence diagrams for A. bulk-motion sensitive, monopolar (MONO) encoding; B. asymmetric bipolar motion compensated (MOCO) encoding and C. Convex Optimized Diffusion Encoding (CODE) encoding that is time-optimal, motion compensated (b = 350 s/mm2 and 1.5 × 1.5 mm in-plane resolution). MONO encoding (A) is fastest, but is not clinically reliable due to severe bulk motion sensitivity. MOCO (B) achieves bulk motion compensation, but requires a much longer TE than MONO (A) and CODE (C). CODE eliminates sequence dead time and improves SNR. CODE (TE = 76 ms) increases SNR by 49% compared to MOCO (TE = 94 ms), assuming myocardial T2 = 45 ms.

Back to article page