Journal
WORLD JOURNAL OF HEPATOLOGY
Volume 13, Issue 12, Pages -Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4254/wjh.v13.i12.1936
Keywords
Liver metastases; Magnetic resonance imaging; Computed tomography; Oncology; Ultrasound; Follow-up
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Liver metastases are commonly seen and can be detected and characterized using imaging techniques such as CT and MRI. Both CT and MRI are currently the most appropriate imaging methods for initial lesion detection, follow-up, and assessment of treatment response, but MRI performs better in detecting small-sized metastases and cases of liver steatosis.
The liver is commonly affected by metastatic disease. Therefore, it is essential to detect and characterize liver metastases, assuming that patient management and prognosis rely on it. The imaging techniques that allow non-invasive assessment of liver metastases include ultrasonography, computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET)/CT, and PET/MRI. In this paper, we review the imaging findings of liver metastases, focusing on each imaging modality's advantages and potential limitations. We also assess the importance of different imaging modalities for the management, follow-up, and therapy response of liver metastases. To date, both CT and MRI are the most appropriate imaging methods for initial lesion detection, follow-up, and assessment of treatment response. Multiparametric MRI is frequently used as a problem-solving technique for liver lesions and has evolved substantially over the past decade, including hardware and software developments and specific intravenous contrast agents. Several studies have shown that MRI performs better in small-sized metastases and moderate to severe liver steatosis cases. Although state-of-the-art MRI shows a greater sensitivity for detecting and characterizing liver metastases, CT remains the chosen method. We also present the controversial subject of the economic implication to use CT over MRI.
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