Eur Radiol: 利用Gd-BOPTA增强MR肝胆期来评价肝肾功能的关系

2021-02-26 shaosai MedSci原创

在一项动物实验的研究表明,Gd-BOPTA在严重肾功能损害的情况下将增加胆道的排泄量。

    Gadobenate dimeglumine (Gd-BOPTA)是一种离子线性钆螯合物,约95%的注射剂量通过肾脏途径排泄,约5%通过胆道系统排泄。Gd-BOPTA通常用于肝局灶性病变的检测和表征,也可用于胆漏和腹水病因的诊断

    Gd-BOPTA制造商不建议在肾功能或肝功能受损的情况下进行任何剂量的校正。有研究表明,在肝脏成像方面,0.05 mmol/kg剂量与0.1 mmol/kg标准剂量具有相同的诊断准确性。此外,一些研究提出对肾功能受损的患者剂量进一步减少至0.025 mmol/kg可防止NFS的发生。在一项动物实验的研究表明,Gd-BOPTA在严重肾功能损害的情况下将增加胆道的排泄量。

      因此,我们研究的目的是将Gd-BOPTA给药后肝胆期的相对肝脏增强程度与患者肝肾功能和获取延迟联系起来。


    近日,发表在European Radiology杂志的一项研究研究了肝、肾功能对注射Gd-BOPTA后MRI肝胆期肝脏相对增强程度的影响,以明确是否可根据患者肝、肾功能的情况调整肝特异性对比剂的剂量。

    在本项IRB批准的回顾性队列研究中,我们纳入了2016年1月至2019年12月326例在两个中心行Gd-BOPTA增强1.5T肝脏MRI检查的患者,扫描包括注射后90-150分钟扫描的肝胆期(HBP)。在平扫和HBP期测量肝信号强度,并使用竖脊肌标准化肝信号强度。计算HBP肝脏标准化相对增强值(NRE),并通过Spearman r相关检验和Mann-Whitney U检验与eGFR、总血清胆红素和HBP采集延迟进行比较。

    326例患者中有221例接受0.05 mmol / Kg Gd-BOPTA(A组),而105例患者接受0.1 mmol / Kg(B组)。B组HBP肝脏NRE显著高于A组(0.55 vs. 0.33,p <0.0001)。在两组中,HBP肝脏NRE与总血清胆红素水平呈负相关A组,r =-0.32,p <0.0001; B组,r =-0.36,p = 0.0002)。总胆红素> 1.2 mg / dl的患者HBP肝脏NRE显著低于总胆红素≤1.2 mg / dl的患者p <0.0001,A组;p = 0.04,B组)。B组肝功能受损的患者在HBP肝脏NRE与A组肝功能正常的患者相当。在肝NRE与eGFR或获得延迟之间无统计学意义的相关性。

图1 两组患者肝胆期肝标准化相对增强(NRE)与总血清胆红素水平之间的相关性;实线代表A组(0.05 mmol / kg),虚线代表B组(0.1 mmol / kg)

图2 总胆红素值(> 1.2 mg/dl且注射剂量为0.1 mmol/kg 与总胆红素值正常(≤1.2 mg/dl)且注射剂量为0.05 mmol/kg 患者肝胆期肝脏标准化相对增强值的比较。

    HBP期肝脏的增强程度与eGFR或延迟无关,但在肝功能受损的患者中显着降低。对于总血清胆红素> 1.2 mg / dl的患者,0.1 mmol / kg 的Gd-BOPTA剂量可维持持续的HBP肝实质的相对增强。


原始出处:

Matteo Bonatti,Riccardo Valletta,Giacomo Avesani,et al. Liver enhancement during hepatobiliary phase after Gd-BOPTA administration: correlation with liver and renal function.DOI:10.1007/s00330-020-07279-6

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    2021-08-20 yese
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    2021-02-28 huagfeg
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    2021-02-26 郝1067

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