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首页> 外文期刊>Academic radiology >Diffusion-weighted mr imaging of focal liver lesions in the left and right lobes: Would visual assessment and/or normalization of ADC be useful for overcoming their differences in ADC values resulting from its locations?
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Diffusion-weighted mr imaging of focal liver lesions in the left and right lobes: Would visual assessment and/or normalization of ADC be useful for overcoming their differences in ADC values resulting from its locations?

机译：左侧和右裂片中焦肝病变的扩散加权MR成像：ADC的视觉评估和/或标准化可用于克服其位置导致的ADC值的差异吗？

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摘要

We read the recent article entitled "Diffusion-weighted MR Imaging of Focal Liver Lesions in the Left and Right Lobes: Is There a Difference in ADC Values?" by Schmid-Tannwald et al (1) with great interest. They reported a comprehensive, retrospective study to determine possible differences in apparent diffusion coefficient (ADC) values of benign and malignant focal liver lesions (FLLs) and normal ljver parenchyma between left and right hepatic lobes. The authors concluded that ADC values of normal liver parenchyma and benign and malignant FLLs calculated from noncardiac-gated diffusion-weighted (DW) imaging are significantly higher in the left hepatic lobe compared with the right hepatic lobe, and this may be a limitation for characterization of FLLs based on ADC measurements (1). Because we have a special interest for DW imaging in the characterization of FLLs (2—4), we would like to make a contribution regarding possible practical methods" for overcoming this potential limitation in DW irnaging.; In a recent and comprehensive study that aimed to assess the value of visual assessment of signal intensities on b800 s/mm2 DW images and ADC maps in differentiation of benign and malignant FLLs performed by Battal et al (2), benign and malignant FLLs could be differentiated by visual assessment more accurately than by ADC measurement. We think that visual assessment can function as a subjective ADC normalization method. In this technique, the signal intensities of the lesions are compared with the adjacent normal liver parenchyma on the same DW images and ADC maps. Schmid-Tannwald et al (1) reported that measured ADC values of normal left liver lobe parenchyma and benign or malignant focal lesions in the left liver lobe are significantly higher than those located in the right lobe. As an example, in the visual assessment, a left liver lobe focal lesion that has a high ADC value according to that of the identical right lobe can be more accurately evaluated on the background of the adjacent left liver lobe, which has also higher ADC values from the normal right liver lobe and vice versa.
机译：我们阅读了最近题为“左右裂片局灶性肝病变的扩散加权MR成像的文章：ADC值有所不同？”施密托兰德等（1）非常兴趣。他们报告了一个全面的回顾性研究，以确定表观扩散系数（ADC）值的良性和恶性局灶性肝脏病变（FLLS）和右肝裂片之间的正常Ljver薄蛋白的可能差异。作者得出结论，与右肝叶相比，左肝叶的正常肝脏畸形和良性和恶性FL1的ADC值显着高，这可能是表征的限制基于ADC测量的FLLS（1）。因为我们在FLLS的表征中对DW成像有特别兴趣（2-4），我们希望为可能的实用方法做出贡献“用于克服DW IRNAGINGE的这种潜在限制。在最近和综合的研究中为了评估B800 S / MM2 DW图像的信号强度的视觉评估值和由Battal等（2）进行的良性和恶性FLL分化的ADC地图，可以通过视觉评估比通过通过视觉评估来区分良性和恶性FLL。 ADC测量。我们认为视觉评估可以用作主体ADC归一化方法。在这种技术中，将病变的信号强度与相邻的正常肝脏实质上的相同DW图像和ADC地图进行比较。Schmid-Tannwald等人（ 1）报道，左肝叶中正常左肝瓣诊所和良性或恶性局灶性病变的测量ADC值明显高于位于中的右叶。作为示例，在视觉评估中，在相邻左肝叶的背景下，可以更准确地评估根据相同的右叶的高ADC值的左肝叶焦点，这也具有更高的ADC值从正常的右肝瓣，反之亦然。

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  • 来源
    《Academic radiology》 |2013年第11期|共1页
  • 作者

    BattalB.; AkgunV.; KocaogluM.; KaramanB.;

  • 作者单位

    Gulhane Military Medical Academy Department of Radiology Etlik Ankara Turkey;

    Gulhane Military Medical Academy Department of Radiology Etlik Ankara Turkey;

    Gulhane Military Medical Academy Department of Radiology Etlik Ankara Turkey;

    Gulhane Military Medical Academy Department of Radiology Etlik Ankara Turkey;

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  • 正文语种 eng
  • 中图分类 放射医学;
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