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More Peripheral Visualization of Hepatic Arteries by Using Respiratory-Triggered 3D True Steady-State Free-Precession Projection Magnetic Resonance Angiographic Sequences with Time-Spatial Labeling Inversion Pulse

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DOI: 10.4236/ojrad.2014.44041    2,432 Downloads   2,791 Views   Citations

ABSTRACT

Purpose: To evaluate respiratory-triggered three-dimensional (3D) true steady-state free-precession (SSFP) projection magnetic resonance angiographic sequences with time-spatial labeling inversion pulse (Time-SLIP) for visualizing the hepatic arteries and to optimize the image acquisition protocol. Materials and Methods: A 1.5-T clinical magnetic resonance imager was used to perform abdominal magnetic resonance angiography (MRA) in 25 consecutive patients before transcatheter arterial chemoembolization or surgery. We compared two selective space-labeling inversion pulse (tag pulse) patterns (Patterns I and II, oblique and parallel tag pulses, respectively). Two experienced radiologists evaluated the number of hepatic arterial branches visible on the acquired MRA images, and the results were referenced with those on images from intra-arterial digital subtraction angiography. Results: Images were acquired from all patients. The two radiologists clearly visualized branches of the left and right hepatic arteries. More peripheral hepatic arterial branches were identified in MRA images captured by using tag pulse Pattern I than in those acquired by using Pattern II (P < 0.05). Two patients with ascites had great numbers of peripheral hepatic arterial branches, indicating that ascites did not affect the visualization of hepatic arteries in the MRA images acquired. There was no significant difference between the scores of images from patients with Child-Pugh classifications A and B (P > 0.05). Conclusion: Non-contrast-enhanced Time-SLIP hepatic MRA with true SSFP allowed selective visualization of peripheral hepatic vessels.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Tsuge, D. , Kuwatsuru, R. , Inoue, T. , Yamashiro, Y. , Suzuki, K. and Shiraishi, A. (2014) More Peripheral Visualization of Hepatic Arteries by Using Respiratory-Triggered 3D True Steady-State Free-Precession Projection Magnetic Resonance Angiographic Sequences with Time-Spatial Labeling Inversion Pulse. Open Journal of Radiology, 4, 314-321. doi: 10.4236/ojrad.2014.44041.

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