Abstract
Aim: In patients with lesions of the liver we compared diagnoses based on different methods of ultrasound as well as spiral CT with the final diagnosis reached at the time of the patient's discharge from hospital. Method: From records of a prospective multicentre study including 90 liver lesions investigated with B-mode baseline and conventional colour/power Doppler ultrasound, contrast-enhanced colour/power Doppler ultrasound and spiral-CT, we evaluated only those where diagnoses for all modalities were available, and where the diagnosis at discharge comprising all clinical, laboratory and imaging data as well as histologic proof was at least “highly probable”. Results: 60 lesions met the inclusion criteria. 20 lesions were ultimately diagnosed as benign, and 40 as malignant. With respect to the diagnosis of malignancy, sensitivity was 92.5 % (37/40) with B-mode and unenhanced conventional colour/power Doppler US ultrasound, 97.5 % (39/40) with contrast-enhanced colour/ power Doppler ultrasound, and 100 % with CT; the corresponding specificities were 65 % (13/20), 85 % (17/20) and 80 % (16/20). 4 of 7 false positive, and 2 of 3 false negative results in the unenhanced technique were diagnosed correctly with contrast-enhanced Doppler ultrasound. Conclusion: Compared to conventional ultrasound, contrast-enhanced Doppler ultrasound improved the diagnostic accuracy in 10 % of the cases. Its accuracy in our study was equal to that of CT.
Zusammenfassung
Studienziel: Es wurden Diagnosen von Leberläsionen mittels B-Mode und konventionellem Colour/Power Doppler Ultraschall, kontrast-verstärktem Doppler Ultraschall sowie Spiral-CT gestellt und mit den Entlassungsdiagnosen verglichen. Methode: In einer prospektiven Multicenter-Studie wurden 90 Lebertumoren mittels B-Mode, konventionellem Colour/Power Doppler Ultraschall und kontrast-verstärktem Colour/Power Doppler US sowie Spiral-CT untersucht. Aus den Studienprotokollen wurden die Läsionen ausgewertet, bei denen eine Diagnose in allen Modalitäten gestellt war und eine Entlassungsdiagnose basierend auf klinischen-, laborchemischen Daten, zusätzlichen Bildgebungsverfahren einschließlich histologischer Untersuchung vorlag und als ”highly probable” eingestuft war. Ergebnisse: Die Einschlusskriterien erfüllten 60 Lebertumoren. Endgültig wurden 20 Läsionen als benigne und 40 als maligne diagnostiziert. Die Sensitivität bezüglich der Diagnose „Malignität” betrug 92,5 % (37/40) für B-Mode und Colour/Power Doppler Ultraschall, 97,5 % (39/40) für kontrast-verstärkten Doppler Ultraschall, und 100 % für CT; die entsprechenden Spezifitäten betrugen 65 % (13/20), 85 % (17/20) und 80 % (16/20). 4 von 7 falsch positiv und 2 von 3 falsch negativ eingestuften Läsionen (konventionelle Technik) wurden korrekt im kontrast-verstärkten Doppler Ultraschall klassifiziert. Schlussfolgerung: In unserer Studie verbesserte der kontrast-verstärkte Doppler Ultraschall im Vergleich zum konventionellen US die diagnostische Genauigkeit in 10 % der Fälle - diese war somit identisch mit der der CT.
Key words
Ultrasound (US) - Liver neoplasms - Doppler studies - US contrast media
Schlüsselwörter
Ultraschall (US) - Lebertumoren - Doppler Studien - US Kontrastmittel
References
1
van Leeuwen M S, Noordzij J, Feldberg M AM, Hennipman A H, Doornewaard H.
Focal liver lesions: characterization with triphasic spiral CT.
Radiology.
1996;
201
327-336
2
Rummeny E J, Marchal G.
Liver imaging: clinical applications and future perspectives.
Acta Radiologica.
1997;
38
626-630
3
Nisenbaum H L, Rowling S E.
Ultrasound of focal hepatic lesions.
Seminars in Roentgenology.
1995;
30
324-346
4
Numata K, Tanaka K, Mitsui K, Morimoto M, Inoue S, Yonezawa H.
Flow characteristics of hepatic tumours at colour Doppler sonography: correlation with arteriographic findings.
AJR.
1992;
160
515-521
5
Nino-Marcia M, Ralls P W, Jeffrey R B , Johnson M.
Colour flow Doppler characterization of focal hepatic lesions.
AJR.
1992;
159
1195-1197
6
Painter A, Bayer C, Böttcher B, Wenk H, Swobodnik W.
Doppler- und Colour-Doppler Ultraschalldiagnostik zur Differenzierung fokaler Leberläsionen.
Bildgebung.
1996;
63
22-26
7
Lencioni R, Pinto F, Armillotta N, Bartolozzi C.
Assessment of tumor vascularity in hepatocellular carcinoma.
Radiology.
1996;
201
353-358
8
Becker D, Giinter E, Hahn E, Heyder N.
Darstellung der Tumorvaskularisation von hepatozellulären Karzinomen mit Ultraschall Angiographie.
Ultraschall Med.
1995;
16
109-112
9
Schwarz K Q, Bechar H, Schimpfky C, Vorwerk D, Bogdahn U, Schlief R.
A study of the magnitude of Doppler enhancement with SH U 508 A in multiple vascular regions.
Radiology.
1994;
193
195-201
10
Hosten N, Steger W, Bechstein W O, Zendel W J, Venz S, Lemke A J, Weber S, Vogl T J, Felix R.
Vascularisation patterns in focal liver lesions: comparison of plain and signal-enhanced amplitude-modulated colour duplex sonography.
Fortschr Röntgenstr.
1997;
166,6
507-513
11
Angeli E, Carpanelli F, Crespi G, Zanello A, Sironi S, Del M aschio.
Efficacy of SH U 508 A (Levovist®) in colour Doppler ultrasonography of hepatocellular carcinoma vascularization.
La Radiologica Medica - Radiol Med.
1994;
87
24-31
12
Campani R, Bozzini A, Calliada F, Bottinelli O, Anguissola R, Conti M P, Corsi G.
Colour Doppler imaging of liver metastases. The value phase-III of a US contrast agent: SH U 508 A (Levovist®) Schering.
La Radiologia Medica - Radiol Med.
1994;
87
32-40
13
Ernst H, Hahn E, Balzer T, Schlief R, Heyder N.
Colour Doppler ultrasound of liver lesions: Signal enhancement after intravenous injection of the ultrasound contrast agent Levovist.
J Clin Ultrasound.
1996;
24
31-35
14
Fujimoto M, Moriyasu F, Nishikawa K, Nada T, Okuma M.
Colour Doppler sonography of hepatic tumours with a galactose-based contrast agent.
AJR.
1994;
163
247-256
15
Tanaka S, Kitamra T, Yoshioka F, Kitamura S, Yamamoto K, Ooura Y, Imaoka T.
Effectiveness of galactose-based intravenous contrast medium on colour Doppler sonography of deeply located hepatocellular carcinoma.
Ultrasound Med Biol.
1995;
21
157-160
16
Maresca G, Barbaro B, Summaria V, de Gaetano A M, Salcuni M, Mirk P, Marano P.
Colour Doppler ultrasonography in the differential diagnosis of focal hepatic liver lesions. The SH U 508 A (Levovist®) experience.
La Radiologia Medica - Radiol Med.
1994;
87
41-49
17
Strobel D, Krodel U, Martus P, Hahn E G, Becker D.
Clinical evaluation of contrast-enhanced colour Doppler sonography in the differentiated diagnosis of liver tumours.
J Clin Ultrasound.
2000;
28
1-13
18
Strobel D, Hoefer A, Martus A, Hahn E G, Becker D.
Dynamic contrast-enhanced power Doppler sonography improves the differential diagnosis of liver lesions.
Int J Colorectal Dis.
2001;
16
247-256
19
Harvey C J, Albrecht T.
Ultrasound in focal liver lesions.
Eur Radiol.
2001;
11
1578-1593
20
Leen E.
The role of contrast-enhanced ultrasound in the characterisation of focal liver lesions.
Eur Radiol.
2001;
11
E27-E34
21
Kamalov I R, Sandrikov V A, Gautier S V, Tsirulnikova O M, Skipenko O G.
The significance of clous velocity and spectral Doppler US in the differentiation of liver tumours.
Eur J Ultrasound.
1998;
7
101-108
22
Muramatsu Y, Takayasu K, Moriyama N, Shima Y, Goto H, Ushio K, Yamada T, Hasegawa H, Koyama T, Hirohashi S.
Peripheral low-density area of hepatic tumours: CT-pathologic correlation.
Radiology.
1986;
160
49-52
23
Honda H, Matsuura Y, Onitsuka H, Murakami J, Kaneko K, Murayama S, Kanematsu T, Masuda K.
Differential diagnosis of hepatic tumours (hepatoma, haemangioma, and metastasis) with CT: value of two-phase incremental imaging.
AJR.
1992;
150
735-740
24
Leen E, Angerson W J, Warren H W, O'Gorman P, Moule B, Carter E C, McArdle C S.
Improved sensitivity of colour Doppler flow imaging of colorectal hepatic metastases using galactose microparticles: a preliminary report.
Br J Surg.
1994;
81
251-254
25
Tano S, Ueno N, Tomiyama T, Kimura K.
Possibility of differentiating small hyperechoic liver tumours using contrast enhanced colour Doppler ultrasonography: a preliminary study.
Clin Radiol.
1997;
52
41-45
M. Beissert, MD
Institut für Röntgendiagnostik der Universität Würzburg
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