PROBLEM TO BE SOLVED: To provide a medical image processing apparatus, a medical image processing method, and an X-ray CT apparatus capable of precisely performing fluid analysis of a blood stream.SOLUTION: The medical image processing apparatus according to an embodiment includes an acquisition part, an identification part, and an analysis part. The acquisition part acquires image data including a blood vessel of a subject. The identification part performs analysis related to the blood vessel by using the image data, and identifies a region of interest in the blood vessel on the basis of a result of the analysis related to the blood vessel obtained by the analysis. The analysis part performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.SELECTED DRAWING: Figure 1【課題】血流の流体解析をより高い精度で行うことができる医用画像処理装置、医用画像処理方法及びＸ線ＣＴ装置を提供すること。【解決手段】実施形態に係る医用画像処理装置は、取得部と、特定部と、解析部とを備える。取得部は、被検体の血管を含む画像データを取得する。特定部は、前記画像データを用いて前記血管に関する解析を行い、当該解析によって求められた前記血管に関する解析結果の空間分布に基づいて、前記血管における関心領域を特定する。解析部は、前記関心領域以外の領域について、第１の精度の流体解析を行い、前記関心領域について、前記第１の精度より高い第２の精度の流体解析を行う。【選択図】図１
