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Diagnosis of liver metastases: value of diffusion-weighted MRI compared with gadolinium-enhanced MRI.

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Title: Diagnosis of liver metastases: value of diffusion-weighted MRI compared with gadolinium-enhanced MRI.
Authors: Hardie AD (AUTHOR), Naik M (AUTHOR), Hecht EM (AUTHOR), Chandarana H (AUTHOR), Mannelli L (AUTHOR), Babb JS (AUTHOR), Taouli B (AUTHOR), Hardie, Andrew D1 (AUTHOR), Naik, Mohit (AUTHOR), Hecht, Elizabeth M (AUTHOR), Chandarana, Hersh (AUTHOR), Mannelli, Lorenzo (AUTHOR), Babb, James S (AUTHOR), Taouli, Bachir (AUTHOR)
Source: European Radiology. Jun2010, Vol. 20 Issue 6, p1431-1441. 11p.
Abstract: Objective: The full diagnostic value of diffusion-weighted (DW) MRI in the evaluation of liver metastases remains uncertain. The aim of the present study was to assess the diagnostic accuracy of DW-MRI and contrast-enhanced MRI (CE-MRI) using extracellular gadolinium chelates, with the reference standard established by consensus interpretation of confirmatory imaging and histopathologic data.Methods: MR examinations of 51 patients with extrahepatic malignancies were retrospectively reviewed by two independent observers who assessed DW-MRI and CE-MRI for detection of liver metastases.Results: By reference standard, 93 liver lesions (49 metastases and 44 benign lesions) were identified in 27 patients, 11 patients had no liver lesions, and 13 patients had innumerable metastatic and/or benign lesions. There was no difference in diagnostic performance between the two methods for either observer for the diagnosis of metastatic lesions per patient. For per-lesion analysis, sensitivity of DW-MRI was equivalent to CE-MRI for observer 1 (67.3% vs. 63.3%, p = 0.67), but lower for observer 2 (65.3% vs. 83.7%, p = 0.007). By pooling data from both observers, the sensitivity of DW-MRI was 66.3% (65/98) and 73.5% (72/98) for CE-MRI, with no significant difference (p = 0.171).Conclusion: DW-MRI is a reasonable alternative to CE-MRI for the detection of liver metastases. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Diagnosis of liver metastases: value of diffusion-weighted MRI compared with gadolinium-enhanced MRI.
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  Data: <searchLink fieldCode="AR" term="%22Hardie+AD%22">Hardie AD</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Naik+M%22">Naik M</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hecht+EM%22">Hecht EM</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chandarana+H%22">Chandarana H</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mannelli+L%22">Mannelli L</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Babb+JS%22">Babb JS</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Taouli+B%22">Taouli B</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hardie%2C+Andrew+D%22">Hardie, Andrew D</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Naik%2C+Mohit%22">Naik, Mohit</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hecht%2C+Elizabeth+M%22">Hecht, Elizabeth M</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chandarana%2C+Hersh%22">Chandarana, Hersh</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mannelli%2C+Lorenzo%22">Mannelli, Lorenzo</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Babb%2C+James+S%22">Babb, James S</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Taouli%2C+Bachir%22">Taouli, Bachir</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Radiology%22">European Radiology</searchLink>. Jun2010, Vol. 20 Issue 6, p1431-1441. 11p.
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  Data: <bold>Objective: </bold>The full diagnostic value of diffusion-weighted (DW) MRI in the evaluation of liver metastases remains uncertain. The aim of the present study was to assess the diagnostic accuracy of DW-MRI and contrast-enhanced MRI (CE-MRI) using extracellular gadolinium chelates, with the reference standard established by consensus interpretation of confirmatory imaging and histopathologic data.<bold>Methods: </bold>MR examinations of 51 patients with extrahepatic malignancies were retrospectively reviewed by two independent observers who assessed DW-MRI and CE-MRI for detection of liver metastases.<bold>Results: </bold>By reference standard, 93 liver lesions (49 metastases and 44 benign lesions) were identified in 27 patients, 11 patients had no liver lesions, and 13 patients had innumerable metastatic and/or benign lesions. There was no difference in diagnostic performance between the two methods for either observer for the diagnosis of metastatic lesions per patient. For per-lesion analysis, sensitivity of DW-MRI was equivalent to CE-MRI for observer 1 (67.3% vs. 63.3%, p = 0.67), but lower for observer 2 (65.3% vs. 83.7%, p = 0.007). By pooling data from both observers, the sensitivity of DW-MRI was 66.3% (65/98) and 73.5% (72/98) for CE-MRI, with no significant difference (p = 0.171).<bold>Conclusion: </bold>DW-MRI is a reasonable alternative to CE-MRI for the detection of liver metastases. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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