[Usefulness of superparamagnetic iron oxide particles in the detection of hepatocellular carcinoma by MR imaging].
Eight patients with histologically or clinically diagnosed hepatocellular carcinoma and a total of 23 nodules were studied. SE 2000/20 (PDW-SE), SE-2000/80 (T2W-SE), SE 500/20 (T1W-SE), GRE 167/13/70 degrees (T1W-GE), and GRE 167/13/15 degrees (T2*W-GE) were used. Using each pulse sequence the pre-and post-contrast detection rates of the 23 nodules visualized by CT arterial portography (CTAP) were compared. With plain MRI, the detection rates were PDW-SE: 48%, T2W-SE: 74%, T1W-SE: 52%, T1W-GE 48% and T2*W-GE: 48%. After the administration of contrast medium all pulses sequences showed enhanced detection rates: 100%, 83%, 87%, 91%, and 96% respectively. Superparamagnetic iron oxide particle enhanced MRI showed a high detection rate comparable to CTAP, suggesting that this agent can make a major contribution to the diagnosis of HCC, particularly the detection of small HCC.
Department of Radiology, Nara Medical University.
S
S
Hirohashi
H
H
Uchida
R
R
Ohimichi
S
S
Kitano
M
M
Tanaka
H
H
Ohishi
D006528:Carcinoma, Hepatocellular / Q000175:diagnosis*; D003287:Contrast Media; D005290:Ferric Compounds; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D011172:Portography
D003287:Contrast Media; D005290:Ferric Compounds; C000499:ferric oxide