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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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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52274#.VI-GOsnQrzE

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.
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. 
 

[1] Lee, M.W., Lee, J.M., Lee, J.Y., et al. (2007) Preoperative Evaluation of Hepatic Arterial and Portal Venous Anatomy Using the Time Resolved Echo-Shared MR Angiographic Technique in Liver Donors. European Journal of Radiology, 17, 1074-1080.
http://dx.doi.org/10.1007/s00330-006-0447-3
[2] Heilmaier, C., Sutter, R., Lutz, A.M., et al. (2007) Mapping of Hepatic Vascular Anatomy: Dynamic Contrast-Enhanced Parallel MR Imaging Compared with 64 Detector Row CT. Radiology, 245, 872-880.
http://dx.doi.org/10.1148/radiol.2453062103
[3] Buhaescu, I. and Izzedine, H. (2008) Gadolinium-Induced Nephrotoxicity. International Journal of Clinical Practice, 62, 1113-1118.
http://dx.doi.org/10.1111/j.1742-1241.2007.01582.x
[4] Garcia, D.M., Duhamel, G. and Alsop, D.C. (2005) Efficiency of Inversion Pulses for Background Suppressed Arterial Spin Labeling. Magnetic Resonance in Medicine, 54, 366-372.
http://dx.doi.org/10.1002/mrm.20556
[5] Shimada, K., Isoda, H., Okada, T., et al. (2009) Non-Contrast-Enhanced Hepatic MR Angiography with True Steady-State Free-Precession and Time Spatial Labeling Inversion Pulse: Optimization of the Technique and Preliminary Results. European Journal of Radiology, 70, 111-117.
http://dx.doi.org/10.1016/j.ejrad.2007.12.010
[6] Shimada, K., Isoda, H., Okada, T., et al. (2011) Non-Contrast-Enhanced Hepatic MR Angiography: Do Two-Dimensional Parallel Imaging and Short Tau Inversion Recovery Methods Shorten Acquisition Time without Image Quality Deterioration? European Journal of Radiology, 77, 137-142.
http://dx.doi.org/10.1016/j.ejrad.2009.05.051
[7] Kang, H.K., Jeong, Y.Y., Choi, J.H., et al. (2002) Three-Dimensional Multidetector Row CT Portal Venography in the Evaluation of Porto-Systemic Collateral Vessels in Liver Cirrhosis. Radiographics, 22, 1052-1061.
http://dx.doi.org/10.1148/radiographics.22.5.g02se011053
[8] Yamashita, K., Sakuramoto, S., Mieno, H., et al. (2014) Preoperative Dual-Phase 3D CT Angiography Assessment of the Right Hepatic Artery before Gastrectomy. Surgery Today, 44, 1912-1919.
http://dx.doi.org/10.1007/s00595-014-0858-8
[9] Wang, J., Liao, B.H., Liu, J.J., et al. (2013) Clinical Application of 320-Row Computed Tomography 4D Digital Subtraction Angiography in Hepatocellular Carcinoma. Zhonghua Yi Xue Za Zhi, 93, 3294-3296.
[10] Kreft, B., Strunk, H., Flacke, S., et al. (2000) Detection of Thrombosis in the Portal Venous System: Comparison of Contrast-Enhanced MR Angiography. Radiology, 216, 86-92.
http://dx.doi.org/10.1148/radiology.216.1.r00jl2386
[11] Aslam, R., Yeh, B.M., Yee, J., et al. (2010) MR Imaging Evaluation of the Hepatic Vasculature. Magnetic Resonance Imaging Clinics of North America, 18, 512-523.
http://dx.doi.org/10.1016/j.mric.2010.08.005
[12] Takahara, T., Imai, Y., Yamashita, T., et al. (2004) Diffusion Weighted Whole Body Imaging with Background Body Signal Suppression (DWIBS): Technical Improvement Using Free Breathing, STIR and High Resolution 3D Display. Radiation Medicine, 22, 275-282.
[13] Shonai, T., Takahashi, T., Ikeguchi, H., et al. (2009) Improved Arterial Visibility Using Short-Tau Inversion-Recovery (STIR) Fat Suppression in Non Contrast-Enhanced Time-Spatial Labeling Inversion Pulse (Time-SLIP) Renal MR Angiography (MRA). Journal of Magnetic Resonance Imaging, 29, 1471-1477.
http://dx.doi.org/10.1002/jmri.21792
[14] Yasuko, I., Vijay, S. and Don, C.R. (2014) Vascular Pathobiology in Chronic Liver Disease and Cirrhosis—Current Status and Future Directions. Journal of Hepatology, 61, 912-914.                               eww141216lx
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