A computer-based method of virtually planning an annuloplasty implantation for a medical procedure in a computer environment, image based, such as ultrasonic based, measuring a geometry of a dilated cardiac valve from patient image data, and determining a reduction of a regurgitation of said valve when downsizing the annulus of said dilated valve；selecting a patient adapted shape and size of a resilient annuloplasty implant for a tissue engaging conformation to be arranged at the downsized annulus based on the determined downsized shape and size of the annulus； and providing production data for said device and/or a delivery system thereof.
