A medical image diagnosis supporting apparatus includes a quantitative value reception unit that receives data of kinds of quantitative values obtained in advance at points in a region of a subject; a variable conversion unit that calculates kinds of intermediate information values dependent on the kinds of quantitative values at each of the points using the kinds of quantitative values at each of the points and kinds of variable conversion functions; and a diagnosis image calculation unit that calculates a diagnosis image for the region. The diagnosis image calculation unit sets a pixel value at each of the points in accordance with a combination of kinds of intermediate information values obtained at each of the points by the variable conversion unit or a combination of intermediate information values and kinds of quantitative values at the point and generates the diagnosis image.