An image display apparatus which displays a form image indicative of a form about an imaging area of a subject and a quantitative value image indicative of quantitative values measured with respect to characteristics of the imaging area, said image display apparatus includes a display unit which displays the form image on a display screen thereof and a specific area setting unit which sets a specific area at the form image displayed on the display screen by the display unit. When the specific area is set at the form image by the specific area setting unit, the display unit displays the quantitative value image on the display screen side by side with the form image in such a manner that the quantitative value image indicates the quantitative values measured with respect to a position corresponding to the specific area set at the imaging area.