Medical image-processing apparatus, X-ray CT apparatus, and medical image-processing method performing fluid analysis to switch displayed color information

An X-ray computerized-tomography (CT) apparatus comprising

• processing circuitry configured to
• acquire image data including a blood vessel of a subject,
• acquire an index value relating to blood flow at each position of the blood vessel by performing fluid analysis of a structure of the blood vessel included in the acquired image data,
• acquire switching information to switch color information for displaying the index value, the switching information being information that determines a situation in which the index value is to be displayed,
• change a color table to assign different colors according to a difference in the index value based on the switching information,
• generate a color image using the changed color table as an image indicating a blood vessel of the subject, and
• cause a display to display the color image.

A medical image-processing method comprising:

• acquiring image data that includes a blood vessel of a subject;
• acquiring an index value relating to blood flow at each position of the blood vessel by performing fluid analysis of a structure of the blood vessel included in the acquired image data;
• acquiring switching information to switch color information for displaying the index value, the switching information being information that determines a situation in which the index value is to be displayed;
• changing a color table to assign different colors according to a difference in the index value based on the switching information;
• generating a color image using the changed color table as an image indicating a blood vessel of the subject;
• and
• causing a display to display the color image.