X-RAY CONDITION DETERMINATION DEVICE, X-RAY CONDITION DETERMINATION METHOD, AND X-RAY DIAGNOSTIC APPARATUS

PROBLEM TO BE SOLVED: To provide an X-ray condition determination device, X-ray condition determination method, and X-ray diagnostic apparatus capable of estimating an incident X-ray dose to a detector under a set imaging condition before roentgenography.SOLUTION: A storage section 17 stores estimate value distribution of an incident dose indices related to incident X-ray dose to an X-ray detector, with a plurality of X-ray conditions defined as a variable, out of radiographic conditions related to roentgenography. An input section 21 inputs values of the radiographic conditions. When a value of at least one X-ray condition is set out of the plurality of X-ray conditions via the input section 21, a determination section 23, while retaining the value of the incident dose index within a substantially fixed range, determines a value of another X-ray condition, out of the plurality of X-ray conditions, from the value of the X-ray condition set based on the estimate value distribution.SELECTED DRAWING: Figure 2 【課題】設定した撮影条件における検出器への入射Ｘ線線量をＸ線撮影前に推定可能なＸ線条件決定装置、Ｘ線条件決定方法およびＸ線診断装置を提供すること。【解決手段】記憶部１７は、Ｘ線撮影に関する撮影条件のうちの複数のＸ線条件を変数とする、Ｘ線検出器への入射Ｘ線量に関する入射線量指標の推定値分布を記憶する。入力部２１は、撮影条件の値を入力する。決定部２３は、入力部２１を介して複数のＸ線条件の少なくとも１つのＸ線条件の値が設定された場合、入射線量指標の値を略一定範囲に保持しつつ、推定値分布に基づいて設定されたＸ線条件の値から前記複数のＸ線条件のうちの他のＸ線条件の値を決定する。【選択図】図２