Evaluation of the FOCUS Diffusion's Added Clinical Value Compared to Conventional MRI With Wide Field View Diffusion in Focal Pancreatic Lesions Characterization

Detailed Summary

The radiologist plays a key role in the management of pancreatic tumours, which are potentially serious. While the scanner, with its high spatial resolution, plays a major role in pancreatic pathology, and in particular in the assessment of operability, MRI, with its good contrast resolution, has proven its contribution to the detection and characterization of focal lesions. Each MRI examination consists of several series of images called sequences, each with its own particularity, to highlight different types of abnormalities such as edema, bleeding, tumor content or vascularization. All the sequences performed constitute a "protocol". The diffusion sequence is a technology that allows the microscopic random movements of water molecules to be translated into images. It thus makes it possible to differentiate between certain aggressive tumours which are characterised by a higher cell density than healthy tissue, in which water molecules do not circulate freely, benign lesions such as cysts in which the circulation of water molecules is not hindered. The calculation of the Apparent Diffusion Coefficient (ADC), an estimate of the diffusion rate of water molecules, is a quantitative diagnostic tool validated in many fields of application and in particular in oncology.

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