title: Value of segmental coronary calcium score on diagnosis and interventional treatment of coronary lesions by 320-slice DVCT.
abstract: The global coronary calcium score has been widely used in the evaluation of coronary plaque burden and cardiovascular disease events. In this study, we investigated the value of segmental coronary calcium score (SCCS) on the diagnosis and interventional treatment. We studied 87 patients with coronary angiography (CAG) and coronary CT angiography (CTA) by 320-slice dynamic volume CT (DVCT). SCCS was determined for each segmental separately. All lesions which SCCS was greater than 0 were enrolled, and were divided into three groups, mild calcification group (SCCS were less than 80), Moderate calcification group (SCCS were more than 80 and less than 200) and Severe calcification group (SCCS were more than 200). From above three groups, lesions received the intervention treatment were elected as subgroup. The position of lesions, plaque morphology, calcification proportion and interventional treatment data were analyzed. Severe calcification group were more frequent in the proximal lesions, stenosis with lesser extent, nubbly and nodular types of plaque, and the inconsistency with CAG was higher than the other two groups (P < 0.05). In the subgroup, more pre-dilatation and post-dilatation balloon were used in severe calcification group, with higher expansion pressure of balloon and stent (P < 0.05), but the diameter of stents was no difference between the three groups.
  
  
  CONCLUSIONS
  SCCS is better than GCCS in the evaluation of coronary calcification, and play an important role in the judgment of stenosis by coronary CT and in the choice of interventional therapeutic devices.
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Li
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Guo-Ming
authors.initials: GM
authors.lastname: Zhang
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Hong-Ming
authors.initials: HM
authors.lastname: Zhang
authors.affiliation: Department of Radiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Sun
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Shu-Fang
authors.initials: SF
authors.lastname: Han
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Tan
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Yu-Qi
authors.initials: YQ
authors.lastname: Gao
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Jin
authors.affiliation: Department of Cardiology, Jinan Military General Hospital Jinan 250031, China.
authors.forename: Yan-Min
authors.initials: YM
authors.lastname: Li
authors.affiliation: Graduate School of Liaoning Medical University Jinzhou, Liaoning 121001, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Fang
keywords: Segmental coronary calcium score; calcification; coronary angiography; dynamic volume CT; plaque morphology