Cutting Edge

Reliable Sizing. Made Easy.

NEW for TAVI Planning

Interventional Cardiology

Visualize virtual endovalve in 3D

  1. Extract the aortic root in 1 click
  2. Analyze the aortic root and access routes easily
  3. Select and preview your endovalve in 3D
  4. Create a customized planning report

Get automatically the most accurate centerline, get reliable measurements and keep focus on what matters : your interventional strategy

Key features

  • Runs on conventional PC (Windows 7/10) or MAC (Mac OS 10.7+)
  • Uses standard DICOM CT scanner data (from CDs, external hard drives, PACS)
  • Produces a precise 3D image of selected vessel, isolated from other organs, in few clicks
  • Simplifies anatomical measurements along the vessel centerline
  • Guides the operator through the choice of a therapeutic strategy
  • Generates the proper sizing worksheet ready to print or send
  • Records the sizing process and manage patient data follow-up for rigourous traceability
  • Makes pictures and video recording easy for clinical case presentation
  • Produces a 3D endoscopic view of selected vessel


Just Follow the Workflow.

You already know how to use EndoSize, just follow the workflow !
EndoSize is designed by surgeons for surgeons and field professionals. And that's why it's efficient and user-friendly.

Now for fenestrated endograft sizing !

Challenging cases

Customize your device

  1. Size your custom endograft device
  2. Pick the fenestrations and go !
  3. Get the feedback instantly. Visualize the 3D model of your custom endograft inside the patient data.


Save Time, Do it Yourself and Share.

Manage the follow-up of your clinical procedures, archive patient data, and share sizing data and videos anywhere

Data Management

Import, Export, Share.

  • Import pre- and post-operative CT data from anywhere (CD, external drive, or your PACS) to your database.
  • Manage your patient data easily to track your procedures, organize clinical trials, or set reminders anytime.
  • Export 3D rendering videos, pdf sizing reports containing sizing sheets, screenshots, your interventional strategy and the selected stentgraft references. Then just order your devices.
  • Share your clinical cases, train interns, and educate patients through impressive media.


Clinically-validated device. Like no other.

Use a CE-marked and FDA 510(k) cleared medical device software for planning complex procedures

Clinical validation

Scientific publications

  • Preoperative predictive factors of aneurysmal regression using the reporting standards for endovascular aortic aneurysm repair. Kaladji A, et al. J Vasc Surg. 2012 May;55(5):1287-95
  • Evolution of the upper and lower landing site after endovascular aortic aneurysm repair. Kaladji A, et al. J Vasc Surg. 2012 Jan;55(1):24-32
  • Quantification of deformations during endovascular abdominal aortic aneurysm repair using finite element simulation. Cemil Göksu, et al. FDA / NHLBI / NSF Workshop on Computer Methods for Medical Devices, 2011 Sept 7-9
  • Sizing for endovascular aneurysm repair: clinical evaluation of a new automated three-dimensional software. Kaladji A, et al. Ann Vasc Surg. 2010 Oct;24(7):912-20


Answers to your needs. Fast.


Who we are

  • Therenva SAS is an ISO13485-certified medical device software company founded in 2007 as a spin-off from the French National Institute for Health.
  • Award-winning company : We provide dedicated innovative software solutions for computer-assisted surgery, especially in the cardiovascular field, making clinical practices more safe, more intuitive and more effective.


How we serve

  • Installation : EndoSize can be installed online. For your convenience, we can deliver EndoSize pre-installed Mac or PC stations.
  • Support & Training : We are a team of experienced professionals committed to provide all the support and guidance needed to our customers through online assistance and sizing workshops.
  • Updates : We improve EndoSize continuously to always provide up-to-date tools for your clinical practice. Updates are made online automatically.


  • Partnership with Ansys Inc

    Therenva is partnering with ANSYS, Inc, the world leader in engineering simulation, towards the introduction of realistic patient-specific biomechanical simulation solutions in clinical routine.

  • EndoSize on Tablet Devices

    The unlimited version of EndoSize is now running on new tablet devices. Cross-platform and light, yet powerful, EndoSize is the most flexible solution for sizing anywhere, anytime !

  • New features for complex cases

    The last EndoSize version is now providing new easy-to-use features for sizing complex cases: a clock-position tool for FEVAR, an automatic outer-curve length measurement tool for tortuous arteries, a virtual endoscopic view feature useful for dissection cases or follow-up evaluation... Try it here !

  • Tutorial video : Basic sizing in less than 10 minutes

    Watch this video to learn the basic steps of a planning procedure with EndoSize.