Detection of hepatocellular carcinoma with ferucarbotran (resovist)-enhanced breath-hold MR imaging: feasibility of 10 minute-delayed images.

Purpose: We evaluated the optimal timing for breath-hold MR imaging with bolus-injectable superparamagnetic iron oxide (SPIO) for detecting hepatocellular carcinoma (HCC).

Materials And Methods: Twenty patients with 62 HCCs (52 hypervascular, 10 non-hypervascular) underwent MR imaging that included unenhanced and SPIO-enhanced T1-weighted gradient echo (GRE) and T2-weighted fast spin echo (FSE) sequences, perfusion study, and SPIO-enhanced T2*-weighted GRE sequences. We obtained SPIO-enhanced T2*-weighted sequences 10 and 30 min after injecting SPIO and made 2 image sets, comprising 10- or 30-min delayed T2*-weighted images.

Perfusion study of hypervascular hepatocellular carcinoma with SPIO.

Purpose: We evaluated whether a perfusion study with Resovist is useful to assess blood flow in tumors in patients with hypervascular hepatocellular carcinoma (HCC).

Subjects And Methods: The subjects were 28 patients; the lesions consisted of 68 hypervascular HCC, 14 post-treatment nodules, and 7 hepatocellular hypovascular nodules. After rapid intravenous injection of Resovist, 7-phase imaging was performed using the single-shot echo-planar method.

[Three-dimentional volumetric interpolated breath-hold magnetic resonance imaging for the diagnosis of breast tumors].

Purpose: Three dimensional volumetric interpolated breath-hold examination magnetic resonance imaging(3D-VIBE MRI) has the advantage of improving z-axis resolution, which makes it possible to obtain high quality multi-planar reconstruction (MPR) and 3-D reconstruction images. Using these capabilities of 3D-VIBE MRI, we have attempted to diagnose and evaluate breast tumors for preoperative planning.

Materials And Methods: One hundred patients with breast cancer and 5 patients with benign breast tumors were scanned by 1.