Diagnostic efficacy of gadoxetic acid (Primovist)-enhanced MRI and spiral CT for a therapeutic strategy: comparison with intraoperative and histopathologic findings in focal liver lesions.
A multicenter study has been employed to evaluate the diagnostic efficacy of magnetic resonance imaging (MRI) using the new liver-specific contrast agent gadoxetic acid (Gd-EOB-DTPA, Primovist), as opposed to contrast-enhanced biphasic spiral computed tomography (CT), in the diagnosis of focal liver lesions, compared with a standard of reference (SOR). One hundred and sixty-nine patients with hepatic lesions eligible for surgery underwent Gd-EOB-DTPA-enhanced MRI as well as CT within 6 weeks. Pathologic evaluation of the liver specimen combined with intraoperative ultrasound established the SOR. Data sets were evaluated on-site (14 investigators) and off-site (three independent blinded readers). Gd-EOB-DTPA was well tolerated. Three hundred and two lesions were detected in 131 patients valid for analysis by SOR. The frequency of correctly detected lesions was significantly higher on Gd-EOB-DTPA-enhanced MRI compared with CT in the clinical evaluation [10.44%; 95% confidence interval (CI): 4.88, 16.0]. In the blinded reading there was a trend towards Gd-EOB-DTPA-enhanced MRI, not reaching statistical significance (2.14%; 95% CI: -4.32, 8.6). However, the highest rate of correctly detected lesions with a diameter below 1 cm was achieved by Gd-EOB-DTPA-enhanced MRI. Differential diagnosis was superior for Gd-EOB-DTPA-enhanced MRI (82.1%) versus CT (71.0%). A change in surgical therapy was documented in 19 of 131 patients (14.5%) post Gd-EOB-DTPA-enhanced MRI. Gd-EOB-DTPA-enhanced MRI was superior in the diagnosis and therapeutic management of focal liver lesions compared with CT.
Hammerstingl
Renate
R
Institute of Diagnostic and Interventional Radiology, Johann Wolfgang Goethe-University, ZRAD, Haus 23 C, Theodor Stern Kai 7, 60590, Frankfurt am Main, Germany. hammerstingl@em.uni-frankfurt.de
Huppertz
Alexander
A
Breuer
Josy
J
Balzer
Thomas
T
Blakeborough
Anthony
A
Carter
Rick
R
Fusté
Lluis Castells
LC
Heinz-Peer
Gertraud
G
Judmaier
Werner
W
Laniado
Michael
M
Manfredi
Riccardo M
RM
Mathieu
Didier G
DG
Müller
Dieter
D
Mortelè
Koenraad
K
Reimer
Peter
P
Reiser
Maximilian F
MF
Robinson
Philip J
PJ
Shamsi
Kohkan
K
Strotzer
Michael
M
Taupitz
Matthias
M
Tombach
Bernd
B
Valeri
Gianluca
G
van Beers
Bernhard E
BE
Vogl
Thomas J
TJ
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D036542:Tomography, Spiral Computed
D003287:Contrast Media; C073590:gadolinium ethoxybenzyl DTPA; D019786:Gadolinium DTPA