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Abstract #2690

Accelerated high-resolution (0.5mm2) T1ρ mapping of the knee joint using interleaved spin-lock-prepared 3D gradient echo with Compressed SENSE

Keita Nagawa1, Suzuki Masashi1, Masami Yoneyama2, Kaiji Inoue1, Eito Kozawa1, and Mamoru Niitsu1
1Saitama Medical University, Saitama, Japan, 2Philips Japan, Tokyo, Japan

3D T1ρ mapping sequence allows rapid acquisition of the entire volume data of each anatomic region, including major joint tissues. In this work, we propose the accelerated high-resolution 3D T1ρ-mapping of the knee-joint using motion-robust interleaved spin-lock acquisition with Compressed SENSE. We compared the T1p mapping with in-plane resolution of 0.5mm2 with different C-SENSE reduction factors (3 and 4.2). There are no clear differences between two image datasets, hence we applied C-SENSE reduction factor of 4.2 (5min48s) for clinical scans, acquiring motion-insensitive high-quality isotropic images less than 6 minutes.

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