PROBLEM TO BE SOLVED: To suppress a difference in radiation detection functions between each semiconductor layer and improve detection accuracy when a bias voltage is fed to a plurality of semiconductor layers that are arranged so as to be adjacent to each other.SOLUTION: A radiation detector includes: a semiconductor layer which receives a photon of radiation to generate an electric charge； a common electrode which is formed on one surface of the semiconductor layer and applies a bias voltage to the semiconductor layer； a plurality of detection element modules which are formed on the other surface of the semiconductor layer, and are formed by arraying detection elements having pixel electrodes in a two-dimensional manner； a plurality of lead wires for power feeding which are arrayed on the surface of the common electrode of each of the detection elements contained in the detection element module at predetermined intervals； and a scattered ray removal member which is provided on the upper part of the lead wire corresponding to arrangement of the lead wire.SELECTED DRAWING: Figure 3【課題】 複数の隣接配置した半導体層へバイアス電圧を給電する際に、各半導体層間の放射線検出機能の差を抑制し検出精度を向上させる。【解決手段】 放射線の光子を受けて電荷を発生する半導体層と、該半導体層の一方の面に形成され前記半導体層にバイアス電圧を印加する共通電極と、前記半導体層の他方の面に形成された画素電極とを有する検出素子が二次元配列されてなる複数の検出素子モジュールと、該検出素子モジュールに含まれる各検出素子の共通電極の表面に所定の間隔で配列された給電用の複数のリード線と、該リード線の配置に対応させて、かつ、該リード線の上部に設けられた散乱線除去部材を備えた放射線検出器を提供する。【選択図】図３
