Eric Auberton

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PURPOSE To evaluate the clinical and biologic safety of superparamagnetic iron oxide (SPIO) as a contrast agent in magnetic resonance (MR) imaging and to assess its efficacy in the detection of liver metastases. MATERIALS AND METHODS Twenty adults with liver metastases underwent MR imaging at 1.5 T before and 1 hour after infusion of SPIO. Four spin-echo(More)
Thirty-nine patients with liver tumors were examined using MRI at 0.5 T before and after intravenous bolus injection of either 0.1 mmol/kg (n = 18) or 0.2 mmol/kg (n = 21) of Gadolinium-Dota, using spin-echo T1-and T2-weighted sequences before injections and spin-echo or gradient-echo sequences after injection. When contrast-to-noise (C/N) data were(More)
Gd-DOTA is an intravenous contrast medium used in MRI. The clinical and biological tolerance of Gd-DOTA was studied in patients with chronic renal failure (e.g., those having a glomerular filtration rate of less than 60 mL/min). Twenty patients were randomized into two groups. In the control group, spin-echo (SE) T1- and T2-weighted images of the kidneys(More)
The aim of this study was to compare the potentials of MRI and CT for characterising renal angiomyolipomas. MRI and CT examinations of 13 adult patients with renal angiomyolipoma were reviewed. Pathological correlation was available for ten patients who underwent nephrectomy or tumourectomy. Negative CT density numbers were demonstrated in 10 cases. MRI(More)
We know that the contrast of MR images can be better than that of CT scans. In the spin echo mode, sequences with long TR and long TE provide great contrast, while, conversely, sequences with short TR and TE produce images with a greater anatomical fidelity. This dual performance, a notion that had never been expressed as explicitly in imaging, has led to(More)
The assessment of the extent of kidney cancers with MRI and CT is compared in 40 patients. The appearance of the tumor with MRI is very variable but always heterogeneous. Specific MRI features (tumoral pseudocapsule) provide a higher overall reliability (OR) than with CT for the detection of expansion beyond the capsule and into the kidney: 80% for 60%.(More)
OBJECTIVE To develop diagnostic imaging criteria for polymyositis (PM) and sporadic inclusion body myositis (sIBM). METHODS We investigated 220 patients with suspected inflammatory myopathies by magnetic resonance imaging (MRI). Findings were compared with the results of clinical and biological examinations and muscle biopsy. PM and IBM were diagnosed in(More)
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