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Non-contrast-enhanced Magnetic Resonance Angiography for Selective Visualization of Hepatic Vasculature with True Steady-state Free-precession Sequence Combined with Time-spatial Labeling Inversion Pulses
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摘要:
目的 探讨真实稳态自由进动序列(true steady-state free-precession, true SSFP)结合时间空间标记反转脉冲(time spatial labeling inversion pulse, T-SLIP)技术在肝动脉、门脉及静脉系统选择性成像中的应用, 以提高对肝脏无对比剂磁共振血管造影(non-contrast-enhanced magnetic resonance angiography, NCE-MRA)的认识。 方法 简述本院无对比剂磁共振肝脏血管造影扫描方案, 回顾性分析2010年10月至2011年5月4例临床病例。 结果 4例患者均成功扫描, 肝动脉均未发现变异, 门脉系统受侵犯2例, 门脉系统增宽1例; 肝静脉受累1例, 伴副肝静脉开放。 结论 true SSFP序列结合T-SLIP技术能够有效应用于选择性肝脏无对比剂MR血管造影, 具有广阔的临床应用价值。 -
关键词:
- 真实稳态自由进动序列 /
- 时间空间标记反转脉冲 /
- 无对比剂 /
- 磁共振血管造影 /
- 肝脏血管
Abstract:Objective To explore the value of the respiratory-triggered three-dimensional (3D) true steady-state free-precession (SSFP) combined with time spatial labeling inversion pulse (T-SLIP) in the selective visualization of hepatic arteries, portal veins and hepatic veins, with an attempt to improve the understanding of non-contrast-enhanced magnetic resonance angiography (NCE-MRA) for liver. Methods The clinical data of four patients who underwent NCE-MRA in our hospital from October 2010 to May 2011 were retrospectively analyzed. Results Selective visualization of hepatic vessels was successfully acquired in all cases. No anatomical variation of hepatic arteries was found. Two cases had portal vein invasion and one case had broadening of main portal vein. One case had hepatic veins involvement, accompanied with the opening of accessory hepatic vein. Conclusion 3D true SSFP scan with T-SLIP can be effectively applied for the selective NCEMRA of hepatic vasculature. -
图 1 脾大待查病例true SSFP合并T-SLIP肝脏血管造影
肝总动脉及肠系膜上动脉走行规则(A)，门脉主干增宽，横径约1. 5 cm，各分支形态规则(B); 下腔静脉及肝左静脉(C)、肝中静脉(D)及肝右静脉(E)显示良好
图 2 肝血管瘤病例true SSFP合并T-SLIP肝脏血管造影
轴位示肝中静脉近段明显受压，管腔变细，肝右静脉略受压(A); 斜冠状位示肝左、右静脉形态规则(B)，副肝静脉开放，形态粗大，引流肝VI段区域(B，C)
图 3 横结肠癌周围侵犯病例true SSFP合并T-SLIP肝脏血管造影
肝动脉走行规则(A); 曲面重建(B)和最大密度投影(C)均提示脾静脉根部与门脉主干延续处信号缺失，考虑受累闭塞，中远段信号尚可
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[1] Thomsen HS, Morcos SK. Contrast-medium-induced nephropathy:is there a new consensus? A review of published guidelines[J]. Eur Radiol, 2006, 16:1835-1840. doi: 10.1007/s00330-006-0223-4 [2] Guiney MJ, Kruskal JB, Sosna J, et al. Multi-detector row CT vascular anatomy of the surgical plane in split-liver transplantation[J]. Radiology, 2003, 229:401-407. doi: 10.1148/radiol.2292021437 [3] Heilmaier C, Sutter R, Lutz AM, et al. Mapping of hepatic vascular anatomy:dynamic contrast-enhanced parallel MR imaging compared with 64 detector row CT[J]. Radiology, 2007, 245:872-880. doi: 10.1148/radiol.2453062103 [4] Carr J, Nemcek A, Abeecassis M, et al. Preoperative evaluation of the entire hepatic vasculature in living liver donors with use of contrast-enhanced MR angiography and true fast imaging with steady-state precession[J]. J Vasc Interv Radiol, 2003, 14:441-449. doi: 10.1097/01.RVI.0000064853.87207.42 [5] Shimada K, Isoda H, Okada T, et al. 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[J]. Eur J Radiol, 2009, 70:111-117. doi: 10.1016/j.ejrad.2007.12.010 [6] Shimada K, Isoda H, Okada T, et al. Non-contrast-enhanced MR portography with time-spatial labeling inversion pulses:comparison of imaging with three-dimensional half-fourier fast spin-echo and true steady-state free-precession sequences[J]. J Magn Reson Imaging, 2009, 29:1140-1146. doi: 10.1002/jmri.21753 [7] Shimada K, Isoda H, Okada T, et al. Non-contrast-enhanced MR angiography for selective visualization of the hepatic vein and inferior vena cava with true steady-state free-precession sequence and time-spatial labeling inversion pulses:preliminary results[J]. J Magn Reson Imaging, 2009, 29:474-479. doi: 10.1002/jmri.21636 [8] 伍兵, 夏春潮, 孙家瑜, 等.非对比剂增强的MRA技术对肾动脉的评估价值[J].临床放射学杂志, 2010, 26:816-819. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=lcfsxzz201006031 -
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