title: Multidetector Computed Tomography Angiography Combined with Intravascular Ultrasound for the Evaluation of Coronary Veins for Percutaneous Mitral Annulus Repair Using Transcoronary Sinus Devices.
abstract: BACKGROUND
  Multidetector computed tomography angiography (MDCTA) can be used to evaluate the target location of transcoronary sinus devices. This study aimed to assess the accuracy of MDCTA in evaluating the target location of transcoronary sinus devices compared with intravascular ultrasound (IVUS).
  
  
  METHODS
  Forty-two patients planned to undergo mitral valve repair (MVR) were prospectively enrolled at Zhoupu Hospital (China) including 15 with secondary mitral regurgitation (MR) grade ≥3. MDCTA was performed to measure the diameters of coronary sinus ostium (CSO) and proximal anterior interventricular vein (PAIV) and the distance between them.
  
  
  RESULTS
  During MVR, these parameters were measured using IVUS before electrode insertion. There was a strong linear correlation between the diameter of CSO measured by MDCTA and IVUS (r = 0.967, P < 0.001), as well as for PAIV (r = 0.954, P < 0.001) and the distance between them (r = 0.986, P < 0.001). No significant differences were found between the results measured by MDCTA and IVUS. The patients with secondary MR grade ≥3 had significantly larger CSO and PAIV measured by IVUS (P = 0.003 and P = 0.017, respectively), as well as by MDCTA (P = 0.010 and P = 0.008, respectively).
  
  
  CONCLUSIONS
  Dual-source MDCTA might allow the quantitative evaluation of the target location of transcoronary sinus devices with a good accuracy. It may be a good choice for guiding the selection of transcoronary sinus devices.
authors.affiliation: Medical School, Tongji University, Shanghai, China.
authors.forename: Shasha
authors.initials: S
authors.lastname: Chen
authors.affiliation: Cardiology Department, Zhoupu Hospital, Shanghai, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: Cardiology Department, Zhoupu Hospital, Shanghai, China.
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Ning
authors.affiliation: Cardiology Department, Zhoupu Hospital, Shanghai, China.
authors.forename: Yingbiao
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Cardiology Department, Zhoupu Hospital, Shanghai, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Medical School, Tongji University, Shanghai, China.|Cardiology Department, Zhoupu Hospital, Shanghai, China.
authors.forename: Xinming
authors.initials: X
authors.lastname: Li
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D054326:Coronary Sinus / Q000000981:diagnostic imaging; D003331:Coronary Vessels / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D058386:Mitral Valve Annuloplasty / Q000295:instrumentation / Q000379:methods*; D008944:Mitral Valve Insufficiency / Q000175:diagnosis* / Q000601:surgery*; D061330:Multidetector Computed Tomography / Q000379:methods*; D064847:Multimodal Imaging / Q000379:methods; D010690:Phlebography / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional / Q000379:methods*
keywords: coronary sinus ostium; intravascular ultrasound; mitral valve repair; multidetector computed tomography angiography; proximal anterior interventricular vein