title: [Quantitative evaluation of aortic regurgitation by general imaging three-dimensional quantification].
abstract: OBJECTIVE
  To investigate the feasibility and application value of AR-Vol measured by GI3DQ method directly.
  
  
  METHODS
  One hundred and two patients with aortic regurgitation who underwent echocardiographic examination in Tianjin Chest Hospital from February 2014 to October 2014 were selected randomly and divided into two groups: the eccentric group included forty cases with eccentric aortic regurgitation; the central group included sixty and two cases with central aortic regurgitation. AR-Vol were directly measured by GI3DQ method, and then it was calculated by PISA method as the reference standard.
  
  
  RESULTS
  (1) In the eccentric group, the AR-Vol measured by GI3DQ method and PISA method were respectively (44±11) ml and (48±10) ml. In the central group, the AR-Vol measured by GI3DQ method and PISA method were respectively (34±13) ml and (33±13) ml. (2) Paired t test analysis showed significant difference in two methods of the eccentric group (P<0.01); no significant difference was found in two methods of the central group (P=0.202). (3) The correlation coefficients of the AR-Vol measurement by GI3DQ method and PISA method are relatively in two groups: r=0.835, r=0.913; consistency analysis showed differences between the two methods of the eccentric group had statistical significance, and differences between the two methods of the central group had no statistical significance.
  
  
  CONCLUSIONS
  In the central aortic regurgitation, AR-Vol measured by GI3DQ method is feasible and accurate compared with the PISA method, which can be used for routine application.
authors.affiliation: Department of Ultrasound, Tianjin Chest Hospital, Tianjin 300222, China.
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Zhu
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Cardiac Intensive Care Unit, Tianjin Chest Hospital, Tianjin 300222, China; Email: gengjie_1973@126.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Geng
authors.forename: Xin
authors.initials: X
authors.lastname: Guan
authors.forename: Jinping
authors.initials: J
authors.lastname: Feng
authors.forename: Qingguo
authors.initials: Q
authors.lastname: Geng
authors.forename: Yongjuan
authors.initials: Y
authors.lastname: Luo
authors.forename: Lixia
authors.initials: L
authors.lastname: Zhang
authors.forename: Kang
authors.initials: K
authors.lastname: Chen
authors.forename: Wensi
authors.initials: W
authors.lastname: Wang
authors.forename: Xixue
authors.initials: X
authors.lastname: Li
mesh_terms: D001022:Aortic Valve Insufficiency; D004452:Echocardiography; D006801:Humans; D021621:Imaging, Three-Dimensional