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Abstract #4260

Optimal breath-hold dynamic liver MRI using a combination of compressed sensing with contrast-enhanced timing robust angiography technique

Nobuyuki Kawai1, Yoshifumi Noda1, Tetsuro Kaga1, Kimihiro Kajita2, and Masayuki Matsuo1
1Gifu University, Gifu, Japan, 2Gifu University Hospital, Gifu, Japan


Rapid dynamic liver MRI with compressed-sensing sensitivity encoding (Compressed SENSE) can reduce respiratory motion artifacts. However, Since the central k-space filling is random or posterior half of the acquisition in Compressed SENSE, optimal acquisition timing is missed only using a conventional scan delay method for hepatic arterial dominant phase (HAP). We assessed a combination of Compressed SENSE with contrast enhanced robust angiography (CENTRA) for dynamic liver MRI. CS-CENTRA sequence achieved significantly higher arterial enhancement with comparable CNR compared to CS-conventional one in HAP. CS-CENTRA contributed to optimal acquisition timing for HAP.

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