Abstract
Liver tumors are defined using quantitative dynamic contrast-enhanced ultrasound compared to histological diagnosis, respectively, long-term follow-ups. Forty-two focal liver lesions in 39 patients were examined by contrast harmonic imaging over a period of 2 min after bolus injection of 10-ml galactose-based contrast agent. Vascular enhancement was quantified by using a dedicated software that allowed us to place representative regions of interest (ROI) in the center of the lesion, in the complete lesion, in regular liver parenchyma and in representative liver vessels (artery, vein and portal vein). Peak enhancement was judged to be either in the arterial, portal venous or in the late phase of liver perfusion. The lesion was described as hypovascular, isovascular and hypervascular compared to liver parenchyma. Contrast uptake was described as centrifugal or centripetal and peripheral or homogenous, respectively. Characterization of the lesions was performed unenhanced and after contrast by four independent specialists unaware of histology. Diagnosis of malignancy was evaluated by using a receiver operating characteristic (ROC) analysis, also overall accuracy, average sensitivity, specificity and negative and positive predictive values were calculated. Interobserver agreement was defined by the Kappa statistics. Histologic examination revealed 29 malignant [hepatocellular carcinoma (HCC), n=11; cholangiocellular carcinoma (CCC), n=1; lymphoma, n=1; metastases, n=16)] and 7 benign [hemangioma, n=1; focal nodular hyperplasia (FNH), n=4, adenoma, n=2)] lesions. Six benign lesions (hemangioma n=1; FNH n=5) were proved by long-term follow-up. ROC analysis regarding the diagnosis of malignancy showed values from 0.43 to 0.62 (mean 0.57) before and from 0.70 to 0.80 (mean 0.75) after contrast agent, respectively. The average values for sensitivity, specificity, accuracy and negative and positive predictive values were 66, 26, 62, 45 and 73% unenhanced and 83, 49, 73, 65 and 82% after contrast, respectively. The interobserver agreement was 0.54 and 0.65 for unenhanced and enhanced examinations, respectively. Quantitative dynamic contrast-enhanced sonography improves the diagnosis of malignancy in liver lesions.
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Bartolozzi C, Lencioni R (1997) Differentiation of hepatocellular adenoma and focal nodular hyperplasia of the liver: comparison of power Doppler imaging and conventional color Doppler sonography. Eur Radiol 7:1410–1415
Wang LY, Wang JH (1997) Hepatic focal nodular hyperplasia: findings on color Doppler ultrasound. Abdom Imaging 22:178–181
Learch TJ, Ralls PW (1993) Hepatic focal nodular hyperplasia: findings with color Doppler sonography. J Ultrasound Med 12:541–544
Gaiani S, Casali A (2000) Assessment of vascular patterns of small liver mass lesions: value and limitation of the different Doppler ultrasound modalities. Am J Gastroenterol 12:3537–3546
Hosten N, Puls R (1999) Contrast-enhanced power Doppler sonography: Improved detection of characteristic flow patterns in focal liver lesions. J Clin Ultrasound 27:107–115
Maruyama M, Matsutani S (2000) Enhanced color flow images in small hepatocellular carcinoma. Abdom Imaging 25:164–171
Pennisi F, Farina R (1998) Hepatic focal lesions: role of color Doppler ultrasonography with contrast media. Radiol Med 96:579–587
Maresca G, Barbaro B (1994) Color Dopler ultrasonography in the differential diagnosis of focal hepatic lesions. The SH U 508 A (Levovist) experience. Radiol Med 5:41–49
Bertolotto M, Dalla Palma L (2000) Characterization of unifocal liver lesions with pulse inversion harmonic imaging after Levovist injection: preliminary results. Eur Radiol 9:1369–1376
Uggowitzer M, Kugler C (1998) Sonographic evaluation of focal nodular hyperplasias (FNH) of the liver with a transpulmonary galactose-based contrast agent (Levovist). Br J Radiol 71:1026–1032
Wermke W (1998) Tumordiagnostik der Leber mit Echosignalverstärkern. Springer, Berlin Heidelberg New York
Dietrich CH (2000) Signalverstärkte Farbdopplersonographie des Abdomens. Schnetztor, Konstanz
Blomley MJK, Sidhu PS (2001) Do different types of liver lesions differ in their uptake of the microbubble contrast agent SHU-508 A in the late liver phase? Early experience. Radiology 220:661–667
Quaia E, Bertolotto M (2002) Characterization of liver hemangiomas with pulse inversion harmonic imaging. Eur Radiol 12:537–544
Dill-Macky M, Burns P (2002) Focal hepatic masses: enhancement patterns with SHU-508 A and pulse-inversion US. Radiology 222:95–102
Wilson SR, Burns PN (2000) Harmonic hepatic ultrasound with microbubble contrast agent: initial experience showing improved characterization of hemangioma, hepatocellular carcinoma and metastasis. Radiology 215:153–161
Frinking P, Bouakaz A (2000) Ultrasound contrast imaging: current and new potential methods. Ultrasound Med Biol 26:965–975
Jang HJ, Lim H (2000) Ultrasonographic evaluation of focal hepatic lesions: comparison of pulse inversion harmonic, tissue harmonic, and conventional imaging techniques. J Ultrasound Med 19:293–299
Harvey C, Blomley M (2000) Pulse-inversion mode imaging of liver specific microbubbles: improved detection of subcentimetre metastases. Lancet 355:807
Albrecht T, Hoffmann C (2001) Phase-inversion sonography during the liver-specific late phase of contrast enhancement: improved detection of liver metastases. Am J Roentgenol 176:1191–1198
Kim TK, Choi BI (2000) Improved imaging of hepatic metastases with delayed pulse inversion harmonic imaging using a contrast agent SHU 508 A: preliminary study. Ultrasound Med Biol 26:1439–1444
Tanaka S, Ioka T (2001) Dynamic sonography of hepatic tumors. Am J Roentgenol 177:799–805
Strobel D, Krodel U (2000) Clinical evaluation of contrast-enhanced color doppler sonography in the differential diagnosis of liver tumors. J Clin Ultrasound 28:1–13
Oestmann J, Galanski M (1989) ROC: A method to compare the diagnostic performance of imaging systems. Rofo Fortschr Geb Rontgenstr Neuen Bildgeb Verfahr 151:89–92
Hanley J, McNeil B (1882) The meaning and the use of the area under a receiver operating characteristic (ROC) curve. Radiology 143:29–38
Nino-Murcia M, Olcott EW (2000) Focal liver lesions: pattern based classification scheme for enhancement at arterial phase CT. Radiology 215:746–751
King L, Burkill G (2002) MnDPDP enhanced magnetic resonance imaging of focal liver lesions. Clin Radiol 57:1047–1057
Op de Beeck B, Luypaert R (1999) Benign liver lesions: differentiation by magnetic resonance. Eur J Radiol 32:52–60
Tanaka S, Kitamra T (1990) Color Doppler flow imaging of liver tumors. Am J Roentgenol 154:509
Cosgrove D (1996) Ultrasound contrast enhancement of tumors. Clin Radiol 51:44
Leen E, McArdle CS (1996) Ultrasound contrast agents in liver imaging. Clin Radiol 51:35
Schlief R (1996) Developments in echo-enhancing agents. Clin Radiol 51:5
Tanaka S, Kitamara T (1995) Effectiveness of galactose-based intravenous contrast medium on color Doppler sonography of deeply located hepatocellular carcinoma. Ultrasound Med Biol 21:157
Ramnarine K, Kyriakopoulou K (2000) Improved characterisation of focal liver tumours: dynamic power Doppler imaging using NC100100 echo-enhancer. Eur J Ultrasound 11:95–104
Martínez-Noguera A, Montserrat E (2002) Ultrasound imaging of hepatic cirrhosis and chronic hepatitis. Med Imaging Int 12–16
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Klein, D., Jenett, M., Gassel, HJ. et al. Quantitative dynamic contrast-enhanced sonography of hepatic tumors. Eur Radiol 14, 1082–1091 (2004). https://doi.org/10.1007/s00330-004-2299-z
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DOI: https://doi.org/10.1007/s00330-004-2299-z