Feature | February 01, 2012 | Dave Fornell

TAVI Planning Software Introduced

Software enables selection of patients and access routes; aids procedure navigation, annulus sizing

Philips received FDA clearance in December 2011 for its Heart Navigator TAVI planning and image guidance tool.

With the approval of the Sapien valve in November 2011, transcatheter aortic valve implantation (TAVI) technology is expected to revolutionize heart valve replacement with a minimally invasive procedure to replace open-heart surgery. However, it requires a good deal of planning, sizing and anatomical assessment of access routes using computed tomography (CT) scans with manipulation by advanced visualization software.



The success of this new procedure depends on correct patient selection and reliable pre-operative planning. In the conventional procedure, the necessary measurements are made during the actual surgery under direct visualization, but with TAVI, this can only be done pre-operatively with the aid of image data. A clear appreciation of the involved anatomy is crucial, and due to the fact that aortic anatomy is complex, 3-D visualization and measurement tools may enable more accurate and efficient pre- and post-intervention planning, which can be further enhanced with stereoscopic 3-D.



At the 2011 Radiological Society of North America (RSNA) annual meeting, TeraRecon and Qi Imaging (formerly Ziosoft) both unveiled  TAVI planning and tool set software packages. The software helps automate manipulation of a CT dataset to quickly extract only the anatomy of interest and measurements, such as sizing of the aortic valve annulus and evaluation of clearance between the new valve and the right and left main coronary arteries. The software helps evaluate the aortic anatomy of patients to see if the route is clear for the larger delivery catheters required for the procedure. A heavily calcified aorta may disqualify a patient from the femoral access route.



Qi Imaging applied its super-computing, deformable registration software to its TAVI package, allowing lifelike motion of the cardiac cycle. This may offer a more accurate assessment of the motion of annulus for better valve sizing.



Philips Healthcare received FDA clearance in December for its HeartNavigator procedure planning and image guidance tool to help perform minimally invasive heart valve replacements. The technology merges pre-operatively acquired 3-D CT scans of the patient’s heart with the live interventional X-ray views. Using this technology, physicians can now simultaneously see the detailed 3-D anatomy of the patient’s heart together with the positioning of the catheter and the placement and deployment of the artificial valve.



TAVI has been available in Europe since March 2010. In August 2010, Siemens introduced its syngo Aortic ValveGuide in Europe to aid in TAVI procedures. It uses rotational angiography dataset images in the hybrid OR to help surgeons and interventional cardiologists navigate during transcatheter valve implantations. The software processes CT-like images of the heart from images acquired with the angiography system and creates 3-D overlay images on the live fluoroscopy. The software also finds the correct optimal C-arm angulation with a perpendicular view on the aortic root.


Related Content

Products | Intravascular Imaging| August 03, 2015
Pie Medical Imaging, CAAS IntraVascular 2.0, OCT, IVUS, NIRS-IVUS
Technology | Intravascular Imaging| August 03, 2015
Pie Medical Imaging announced the release of CAAS IntraVascular 2.0, the dedicated software for analysis of...
Products | Guidewires| July 28, 2015
The Safari2 Pre-Shaped Guidewire.
Feature | Heart Valve Repair| July 28, 2015
Boston Scientific announced CE Mark and U.S. Food and Drug Administration (FDA) clearance for the Safari2 Pre-Shaped...
Direct Flow Medical, Transcatheter Aortic Valve System, SALUS Trial, FDA
News | Heart Valve Repair| July 22, 2015
Direct Flow Medical Inc. received Investigational Device Exemption (IDE) approval from the U.S. Food and Drug...
GlobalData, TAVR, Edwards, Medtronic, CoreValve Evolut R, Sapien 3

Sapien 3 image courtesy of Edwards Lifesciences
 

News | Heart Valve Repair| July 21, 2015
The recent U.S. Food and Drug Administration (FDA) approvals of two next-generation transcatheter aortic valve...
ACC, health policy statement, heart team, cardiovascular health
Feature | Cardiovascular Surgery| July 17, 2015
Building teams that include advanced practice providers can help cardiovascular practices meet the challenges of modern...
Vital Images, Toshiba, CT Myocardial Perfusion, cardiac CT, CORE 320 study
Technology | July 15, 2015
Vital Images Inc. will debut its U.S. Food and Drug Administration (FDA) 510(k)-cleared CT Myocardial Perfusion...
Biotronik, TAVI device, BIOVALVE trial, Hamburg, Germany
News | Heart Valve Repair| July 14, 2015
Biotronik announced the completion of the BIOVALVE first-in-human trial for its new transcatheter aortic valve. Study...
CardiAQ, Edwards, acquire, acquisition, Fortis, TMVI, mitral valve replacement

CardiAQ Transcatheter Mitral Valve Implantation System image courtesy of CardiAQ Valve Technologies

Feature | Heart Valve Repair| July 13, 2015
Edwards Lifesciences Corp. announced that it has agreed to acquire CardiAQ Valve Technologies Inc., a privately held...
Overlay Init