Computer-implemented method for evaluating a CT data set regarding perivascular tissue, evaluation device, computer program and electronically readable storage medium

An evaluation device to evaluate a CT data set of a coronary region of a patient regarding perivascular tissue of at least one target blood vessel, the evaluation device comprising:

• at least one processor;
• and
• a memory storing computer-executable instructions that, when executed by the at least one processor, cause the evaluation device to
• determine a centerline of the at least one target blood vessel in the CT data set,
• define a region of interest including at least one defined outer region radius around an extension interval of the centerline, the at least one defined outer region radius being larger than a radius of the at least one target blood vessel, the extension interval including a start point and an end point, the start point and the end point being defined based on an ostium which marks a beginning of the at least one target blood vessel, and the end point being defined as
• an extension length or a distance from at least one of the ostium or the start point along the centerline, or
• an intersection between the centerline and a circle having a defined radius centered on the ostium, and
• calculate at least one quantitative value from the CT data set in the region of interest.

A non-transitory machine readable medium storing executable instructions that, when executed by at least one processor, causes the at least one processor to perform a method for evaluating a CT data set of a coronary region of a patient regarding perivascular tissue of at least one target blood vessel, the method comprising:

• determining a centerline of the at least one target blood vessel in the CT data set;
• defining a region of interest including at least one defined outer region radius around an extension interval of the centerline, the at least one defined outer region radius being larger than a radius of the at least one target blood vessel, the extension interval including a start point and an end point, the start point and the end point being defined based on an ostium which marks a beginning of the at least one target blood vessel, and the end point being defined as
• an extension length or a distance from at least one of the ostium or the start point along the centerline, or
• an intersection between the centerline and a circle having a defined radius centered on the ostium;
• and
• calculating at least one quantitative value from the CT data set in the region of interest.