A scintillator panel for converting radiation into scintillation light, the scintillator panel comprising: a substrate having a front surface and a back surface, and formed with a plurality of convex portions projecting from the front surface along a predetermined direction and a concave portion defined by the convex portions, wherein the predetermined direction is a direction towards the front surface from the back surface and parallel to an incident direction of the radiation; a plurality of first scintillator sections formed on the respective convex portions of the substrate; and a second scintillator section formed on the bottom surface of the concave portion of the substrate; wherein the first scintillator section has a first portion extending along the predetermined direction from an upper surface of the convex portion, and a second portion extending along the predetermined direction from side surfaces of the convex portion so as to contact with the first portion, the first and second portions (21, 22) are composed of a plurality of columnar crystals of a scintillator material, the first scintillator sections are separated from one another, and the second scintillator section is in contact with the second portion, the first portion is composed of a plurality of the columnar crystals formed by crystal growth along the predetermined direction from the upper surface of the convex portion, the second portion is composed of a plurality of the columnar crystals formed by crystal growth along a direction intersecting with the predetermined direction from the side surfaces of the convex portion, and extends in its entirety along the predetermined direction, a column diameter of the columnar crystals composing the first portion expands from the base end portion on the upper surface side of the convex portion toward the tip end portion on the opposite side, a column diameter of the columnar crystals composing the second portion expands from the base end portion on the side surface side of the convex portion toward the tip end portion on the opposite side, and characterized in that an enlargement factor of the column diameter of the columnar crystal is greater than an enlargement factor of the column diameter of the columnar crystal such that at least at each tip end portion, the column diameter of the columnar crystals is greater than the column diameter of the columnar crystals. a substrate having a front surface and a back surface, and formed with a plurality of convex portions projecting from the front surface along a predetermined direction and a concave portion defined by the convex portions, wherein the predetermined direction is a direction towards the front surface from the back surface and parallel to an incident direction of the radiation; a plurality of first scintillator sections formed on the respective convex portions of the substrate; and a second scintillator section formed on the bottom surface of the concave portion of the substrate; wherein the first scintillator section has a first portion extending along the predetermined direction from an upper surface of the convex portion, and a second portion extending along the predetermined direction from side surfaces of the convex portion so as to contact with the first portion, the first and second portions (21, 22) are composed of a plurality of columnar crystals of a scintillator material, the first scintillator sections are separated from one another, and the second scintillator section is in contact with the second portion, the first portion is composed of a plurality of the columnar crystals formed by crystal growth along the predetermined direction from the upper surface of the convex portion, the second portion is composed of a plurality of the columnar crystals formed by crystal growth along a direction intersecting with the predetermined direction from the side surfaces of the convex portion, and extends in its entirety along the predetermined direction, a column diameter of the columnar crystals composing the first portion expands from the base end portion on the upper surface side of the convex portion toward the tip end portion on the opposite side, a column diameter of the columnar crystals composing the second portion expands from the base end portion on the side surface side of the convex portion toward the tip end portion on the opposite side, and characterized in that an enlargement factor of the column diameter of the columnar crystal is greater than an enlargement factor of the column diameter of the columnar crystal such that at least at each tip end portion, the column diameter of the columnar crystals is greater than the column diameter of the columnar crystals.