The Value Of Research Of 320 Row Dynamic Volume CT In The Evaluation Of Coronary Artery Anatomy Structure

Objective:To explore the value of 320-row dynamic volume CT in the evaluation of the coronary artery anatomy, to explain its advantages in CT angiography(CT angiography, CTA)of coronary, and to analyze its clinical significance in coronary angiography (Coronary angiography, CAG) and percutaneous coronary intervention (percutaneous coronary intervention, PCI). Method:70 cases of those who are examined by 320-row dynamic volume scanning of coronary CTA which without disease, to measure their subjects of the inner diameter(inner diameter, ID) of openings of the left main coronary artery(LM), right coronary artery(RCA), left anterior descending artery(LAD), left circumflex branch(LCX) and the ascending aortic(AAO);and the opening positions and opening angles of the LM and RCA, and the angle between LAD and LCX; the length of LM. To disaggregate the data by gender groups, and statistically analyzed. Results:①The ID of LM,RCA,LAD,LCX and AAO are 4.10±0.80mn,3.52±0.69mm,3.43±0.72mm,2.84±0.77mm and 28.63±3.06mm. Among them, the male group's mean respectively are 4.25±0.80mm,3.78±0.68mm,3.54±0.75mm,3.06±0.83mm and 29.91±2.91mm; the female group's mean respectively are 3.91±0.79mm,3.18±0.53mm,3.30±0.66mm,2.54±0.58mm and 26.92±2.36mm.②The angle between the ascending aorta and the beginning of LM and RCA respectively are 110.13±15.04°,47.49±17.19°.Among them, the male group's mean respectively are 108.42±7.25°,45.57±17.07°;the female group's mean respectively are 112.41±11.33°,50.05±17.30°.③The positions of LM and RCA: Those who are in sinus respectively are 78.57%,81.43%, those who are in the junction of sinus and cascular respectively are 15.71%,14.28%, those who are out of sinus respectively are 5.72%,4.29%.④The mean of the length of LM is 10.49±4.08mm.Among them, the men group's mean is 10.63±4.48mm; the female group's mean is 10.29±3.53mm.⑤The foundings of coronary artery anomalies:there is 1 case of high position in LM and RCA; 10 cases of accessory coronary artery open soly; 1 case of anomalous origin of RCA which is absent; 9 cases of traveling abnormal; 1 case of coronary artery fistula. Conclusion:The 320 row CT volume scan can clearly show normal anatomy of coronary artery structure and variation, and is important in the clinical practice of CAG and PCI.