[Comparison of biphasic spiral CT and MnDPDP-enhanced MRI in the detection and characterization of liver lesions].
BACKGROUND
To evaluate the efficacy of biphasic spiral CT and MnDPDP (Teslascan, Nycomed Amersham) enhanced MR imaging to detect and classify liver lesions.


METHODS
39 patients with known or suspected liver lesions were included into this study and examined with biphasic spiral CT and MnDPDP-enhanced MRI. 25 histological reports and 1 extreme increased serum AFP value could be obtained from 22 patients, therefore only these 26 proven lesions were included into this analysis.


RESULTS
From 39 patients CT revealed in 54% (14 lesions) and MRI in 54% correct (i.e., corresponding to the histology) diagnosis. Correct CT/wrong MRT diagnosis and vice versa was present in only 2 lesions each. Differentiating into benign versus malignant lesion was successful in 73% for MRI and 77% for CT. In 81% MRI revealed the correct type of lesion (hepatocellular or non-hepatocellular) vs. 77% with CT. Sensitivity/specificity for differentiation into benign/malignant lesions was 86%/70% (MRI) and 87%/77% (CT) and for differentiation of the lesions origin 100%/80% (MRI) and 80%/75% (CT), these differences were not significant. MnDPDP-enhanced MRI showed significantly more lesions than non-enhanced MRI.


CONCLUSIONS
MnDPDP-enhanced MRI is better than CT in differentiating hepatocellular liver lesions from non-hepatocellular lesions. After contrast enhancement with MnDPDP significantly more lesions could be evaluated in MRI. MnDPDP improves, in combination with biphasic helical CT, the diagnosis of liver lesions.
Grimm
J
J
Klinik für Diagnostische Radiologie, CAU Kiel. grimm@rad.uni-kiel.de
Müller-Hülsbeck
S
S
Blume
J
J
Biederer
J
J
Heller
M
M
D000236:Adenoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D000328:Adult; D000368:Aged; D001706:Biopsy; D006528:Carcinoma, Hepatocellular / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D018281:Cholangiocarcinoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003560:Cysts / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D004492:Edetic Acid / Q000031:analogs & derivatives*; D005260:Female; D020518:Focal Nodular Hyperplasia / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008099:Liver / Q000473:pathology; D008107:Liver Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary; D008115:Liver Regeneration; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011732:Pyridoxal Phosphate / Q000031:analogs & derivatives*; D014057:Tomography, X-Ray Computed / Q000379:methods*
D011732:Pyridoxal Phosphate; D004492:Edetic Acid; C060076:N,N'-bis(pyridoxal-5-phosphate)ethylenediamine-N,N'-diacetic acid