The invention discloses a coronary
artery stenosis dual-judgment method based on cross section deformation geometric information. The coronary
artery stenosis dual-judgment method comprises the following steps that 1, coronary
artery reconstruction is conducted; 1.1, calculating a tangent line at the
central line point of the
blood vessel; 1.2, reconstructing a
blood vessel section: acquiring a
blood vessel cross section contour taking a blood vessel advancing direction as a normal line in the three-dimensional coronary CT
angiography image; 2, judging coronary artery
stenosis; 2.1, first judgment is carried out, and suspicious narrow sections are detected; 2.2, second judgment is carried out, specifically, the stenosis level of the blood vessel section is judged, and comprehensive analysis is carried out on detection data on the
whole blood vessel. According to the coronary artery stenosis dual judgment method based on the cross section deformation geometric information, geometric shape information of blood vessels such as the center line point position, the blood vessel cross section stenosis position, the blood vessel cross section concave-convex property and the concave-convexdegree is fully considered, the blood vessel stenosis is accurately judged, and the defects of a traditional
algorithm are effectively overcome.