Low-field (0.08 T) magnetic resonance imaging of the pancreas: comparison with computed tomography and ultrasound

Seventy-four patients referred for computed tomography (CT) and ultrasound examination with a presumptive diagnosis of pancreatic disease were studied using a low-field (0.08 T) magnetic resonance (MR) imaging instrument. A further 50 patients being examined for non-pancreatic disease were also examined to assess appearances of a normal pancreas. All MR examinations were performed using an interleaved saturation-recovery/short inversion time (TI) inversion-recovery sequence. Part or all of the pancreas was seen in 96% of normal cases. In inflammatory disease, MR was more accurate than CT or ultrasound for diagnosis, whilst for demonstration of pancreatic tumours, MR was found to be no better or worse than either CT or ultrasound. The use of specific T1 measurement for soft-tissue characterization was not useful because of a large overlap in values between normal, inflamed and malignant pancreatic tissue. T1 measurement was found useful in differentiating different pathological fluids. (author)