The purpose of the present invention is to provide a technology which, with regard to quantitative value diagnosis in which quantitative values which have been acquired with a medical image acquisition device are used, assists with diagnoses by reducing a burden on a user. This medical image diagnostic assistance device comprises: a quantitative value acceptance unit which accepts data of two or more prescribed types of quantitative values which have been derived in advance for each of a plurality of points within a prescribed region of a subject； a variable transform unit which, using the two or more types of quantitative values for each of the points and one or more prescribed variable transform functions, computes, for each of the points, one or more intermediate information values which are dependent on the two or more types of quantitative values； and a diagnostic image computation unit which computes a diagnostic image for the region. According to a combination of the two or more types of intermediate information values which the variable transform unit has derived for each of the points, or a combination of the one or more types of intermediate information values and the one or more types of quantitative values for each of the points, the diagnostic image computation unit sets a pixel value for each of the points and generates a diagnostic image.La présente invention se réfère à une technologie qui, en ce qui concerne le diagnostic par valeurs quantitatives, dans lequel des valeurs quantitatives ayant été acquises à l'aide d'un dispositif d'acquisition d'images médicales sont utilisées, fournit une aide au diagnostic en réduisant la charge de travail incombant à l'utilisateur. Ce dispositif d'assistance au diagnostic d'images médicales comprend : une unité d'acceptation de valeurs quantitatives, qui accepte des données d'au moins deux types prescrits de valeurs quantitatives ayant été calculées préalablement pour chacun d'une pluralité de points dans une régi
