TAVI planning from cardiac CT angiography, in the browser
A tool that supports the planning of transcatheter aortic valve implantation: from the multiplanar reconstructions to a report ready to print.
For interventional cardiologists and cardiovascular imaging specialists.
What Tavia does
- 01
Aortic axis
Aligns the multiplanar reconstructions (MPR) with the axis of the aortic root.
- 02
Cusp nadirs
The lowest point of each cusp defines the basal plane of the annulus.
- 03
Aortic annulus
The contour of the annulus, with its area, perimeter and minimum and maximum diameters.
- 04
Coronary ostia
Height of the right and left ostia above the basal plane.
- 05
Aortic root
Left ventricular outflow tract, sinuses of Valsalva, sinotubular junction and ascending aorta.
- 06
Access routes
Smallest lumen diameter along the iliac and femoral axes, on each side.
- 07
Report
The measurements, the fluoroscopy angles computed from the cusps (three-cusp coplanar view and cusp overlap) and the comparison with the prostheses' size ranges, to print or export.
Before you start
Nothing to install
Runs in the computer's browser, with graphics acceleration (WebGL 2).
The exam stays on your computer
The DICOM files are read and processed right there, in the browser.
Servers in Brazil
The cases live in your account, in the São Paulo region; each user sees only their own.
Access granted by an administrator
Ask by e-mail; whoever already has access uses their Google account.
Frequently asked questions
What is Tavia?
Tavia is a web tool that supports the planning of transcatheter aortic valve implantation (TAVI). The physician opens the cardiac CT angiography in the browser, follows the planning steps (aortic axis, cusp nadirs, aortic annulus, coronary ostia, aortic root and access routes) and gathers the measurements in a report.
Does Tavia replace the decision of the physician or the heart team?
No. Tavia is a support tool: the physician places the points and traces the contours on the images, checks every measurement and decides the plan. The comparison with the prostheses' size ranges is based on the tables the manufacturers publish and does not replace clinical judgment.
Do I need to install anything?
No. Tavia runs in the browser: all it takes is a current browser with graphics acceleration (WebGL 2), such as Chrome or Edge 111 or later, Firefox 128 or later and Safari 16.4 or later. The Browser check page shows whether the computer meets these requirements.
Which exam does Tavia use?
Cardiac CT angiography in DICOM files, opened from a folder or a ZIP file. When the study has more than one series (systole and diastole, for example), the physician chooses the series to measure on.
Do the exam files leave my computer?
No. The DICOM files are not sent to the server: the exam is read and processed in the browser itself. Your account keeps the cases (the measurements and the planning data) and the images you capture during the procedure, stored on servers in Brazil (São Paulo region), and each user reaches only their own cases. When the patient's identifiers are not needed for the planning, we recommend opening anonymized exams.
Which measurements does Tavia provide?
For the aortic annulus, its area, perimeter and minimum and maximum diameters. Also the height of the coronary ostia above the basal plane, the diameters of the left ventricular outflow tract, the sinuses of Valsalva, the sinotubular junction and the ascending aorta, the smallest lumen diameter along the iliac and femoral axes and the fluoroscopy angles computed from the cusps.
Which languages is Tavia in?
Brazilian Portuguese and English. Tavia opens in the browser's language (in English when it is neither), and the language can be changed at the top of this page or in the app's preferences.
How do I ask for access?
Write to rbpmedtech@gmail.com with your name and the institution where you work. Access is granted by an administrator, and you sign in with a Google account.