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![Intraprocedural guidance in percutaneous mitral valve repair](https://image.oaes.cc/b4c52017-7568-4c85-b44c-85d6cb845e22/3753.fig.20.jpg)
Figure 20. Procedural guidance of Coronary Sinus Annuloplasty. After cannulation of the CS, a delivery catheter is positioned distal in the CS/GCV (A), as close as the antero-lateral commissure of the MV; quantitative venography (B) and pre-procedural CT allows for selection of the appropriate implant size. After deployment of the distal anchor of the device and application of manual traction, the proximal anchor is deployed (C); reduction of the septo-lateral dimensions and MR downgrading are finally assessed by fluoroscopy and color Doppler imaging: pre-procedural (D) and post-procedural MR (E). CS: coronary sinus; GCV: great coronary vein; CT: computed tomography; MV: mitral valve; MR: mitral regurgitation