Author/Authors :
Naofumi Ono، نويسنده , , Kenji Hirai، نويسنده , , Hiroyasu Ijyuin، نويسنده , , Satoshi Itano، نويسنده , , Hideya Noguchi، نويسنده , , Kenji Sakata، نويسنده , , Yoshinori Aoki، نويسنده , , Tomoki Aritaka، نويسنده , , Hirohiko Abe، نويسنده , , Kyuichi Tanikawa، نويسنده ,
Abstract :
Magnetic resonance imaging (MRI) and computed tomography (CT) were performed in four patients with thorotrastosis. On CT scan, Thorotrast (thorium oxide) deposition was shown as high-density areas in the liver and spleen and the abdominal lymph nodes. These deposits were not found on MRIs. Splenic volume was significantly small due to atrophy. The contrast-noise ratio in the spleen on T1-weighted images was significantly lower. Thorotrast deposition does not affect MRI appearance; therefore it may be useful for the early detection of malignant tumors as a complication of thorotrastosis.
