Ces radiol. 2008, 62(1):60-65
Detection of the colorectal carcinoma liver metastases with magnetic resonance after intravenous application of hepatocellular contrast agent (Gd-EOB-DTPA), comparison with the intraoperative ultrasoundOriginal article
- 1 Radiodiagnostická klinika LF UK a FN, Plzeň
- 2 Chirurgická klinika LF UK a FN, Plzeň
Aim: The aim of our prospective study was to evaluate the accuracy of magnetic resonance imaging (MRI) with intravenous application of hepatocellular contrast agent (gadoxetic acid, Gd-EOB-DTPA) in the detection of liver metastases before surgery.
Method: Thirty consecutive patients (mean age 60.7 years; range 36-79) were enrolled into study. All examinations were performed with intravenous application of hepatospecific contrast agent (gadoxetic acid) using 1.5 T magnetic resonance system. The imaging protocol consisted of T1-weighted spoiled gradient echo sequences in the arterial, portal and interstitial phases, followed by delayed hepatospecific phase at 10 and 20 minutes after contrast material administration. T2-weighted sequences were also used but were not included in the comparison. All patients underwent open surgery including intraoperative ultrasound (IOUS) performed with dedicated T-shape US probe within 24 hours. The results were compared with MRI findings.
Results: A total of 64 lesions (49 metastases) were found by IOUS. 46 metastases were depicted by MRI (sensitivity 94%). Fifteen non-metastatic lesions were found on IOUS, two of them (small haemangiomas) were misinterpreted as metastases by MRI (specificity 87%).
Conclusion: The results of the study show excellent clinical value of MRI with intravenous application of gadoxetic acid in assessment of liver involvement in subjects with metastasizing colorectal carcinoma.
Keywords: gadoxetic acid, Gd-EOB-DTPA, hepatobiliary contrast agents, liver metastases, colorectal carcinoma, magnetic resonance imaging, intraoperative ultrasound
Grants and funding:
Práce byla podpořena výzkumnými projekty IGA MZCR NR/8301-3 a MSM 0021620819.
Accepted: September 3, 2007; Published: March 1, 2008 Show citation
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