Assessment of the Clinical and Economic Impact of Sim&Size, a Simulation Software for Implantable Devices Used in the Treatment of Intracranial Aneurysms: A Prospective Multicenter Study.
Key facts
- Who runs it
- Sim&Cure
- Where
- Angers, Bordeaux, Le Kremlin-Bicêtre, Marseille, Paris, and Reims, FranceSee the 6 sites
- Trial code
- Status
- Recruiting
- People taking part
- 576 people, planned
- Started
- 10 Apr 2026
- Expected to end
- Jun 2028
- Type of study
- Interventional, 2 groupsOne group gets an existing treatment, for comparison.
- Treatments tested
- 3D simulation of placement of neurovascular implantable medical device
- Manual planning of endovascular procedure
- Record updated
- 13 May 2026
Who can take part
- Age
- 18 years and older
- Sex
- Women and men
- Healthy volunteers
- Cannot take part
The registry criteria, word for word
Show all 14 criteriaShow less
Who can take part
- Patients aged ≥18 years planned to be treated endovascularly for unruptured intracranial aneurysms
- Planned implantable device models is available in the Sim\&Size simulation database and used following their approved indications
- Affiliated with the French social security system
- Signed the information and consent form
Who cannot take part
- Patients scheduled to undergo endovascular treatment with stents only
- Patients who have already been treated in the planned deployment area and whose previous treatment presents a potential contact with the new implant
- Giant intracranial aneurysm resulting in poor-quality reconstruction in the potential deployment area of the implant during 3DRA acquisition
- Presence of artifacts on the 3DRA in the potential deployment area of the implant
- Patients for whom pre-planning was performed using Sim\&Cure software prior to patient randomization
- Patients presenting for treatment of a ruptured aneurysm
- Patients with multiple aneurysms whose treatment is planned during a single procedure and who require separate individual therapeutic strategies. Examples of individual therapeutic strategies excluded from the study: placement of two separate flow diverters without telescopic technique, individual coiling of each aneurysm
- Pregnant or breastfeeding women
- Patients under guardianship or conservatorship
- Emergency situations
Where in France
- CHU d AngersAngers, FranceContact: Jean-Baptiste Girot, Dr (principal investigator)Taking people
- CHU de BordeauxBordeaux, FranceContact: Gaultier Marnat, Dr (principal investigator)Taking people
- Hôpital Bicêtre AP-HPLe Kremlin-Bicêtre, FranceContact: Laurent Spelle, Dr (principal investigator)Taking people
- Hopital de la TimoneMarseille, FranceContact: Jean-François Hak, Dr (principal investigator)Not yet recruiting
- Fondation RothschildParis, FranceContact: Raphaël Blanc, Dr (principal investigator)Not yet recruiting
- CHU de ReimsReims, FranceContact: Laurent Pierrot, Dr (principal investigator)Not yet recruiting
About the trial
What the trial wants to find out
In recent years, endovascular treatment of intracranial aneurysms has seen remarkable growth, now surpassing traditional surgical approaches in terms of frequency of use. However, this transition to endovascular methods is not without its challenges. This type of procedure requires careful selection of the device to be implanted, a decision that is still based on manual two-dimensional measurements. This method is questionable, as it does not always take into account the complexity and specificities of certain aneurysms, where three-dimensional geometry can play a crucial role. As a result, these procedures carry significant risks, such as the need for additional maneuvers to remove or reposition devices, or even deploy another support device, which potentially increases the risk of perioperative complications, the duration of surgery, and the amount of radiation required for imaging. Beyond the impact on the patient, these complications also result in additional costs for the healthcare system, expenses that could likely be avoided if more precise and appropriate tools were used from the outset of the procedure. In this context, optimizing the choice of endovascular devices could have both clinical and economic impacts. Innovative technology such as Sim\&Size, which supports healthcare professionals in their therapeutic decisions and choice of the appropriate endovascular device, should therefore improve the effectiveness and efficiency of endovascular treatments.
Read full original descriptionShow less
Sim\&Size is a Software as a Medical Device (SaMD) intended to provide a 3D view of the final placement of neurovascular implantable medical devices of the following types: flow diverters, intrasaccular devices, stent devices, and coils. It uses an actual image of the patient produced by 3D rotational angiography. It offers physicians the possibility of simulating the deployment of implantable medical devices in the artery to be treated and predicts the final placement and the extent of apposition of the implant. Sim\&Size has CE marking and FDA clearance.
This study is a prospective, randomized, multicenter study whose main objective is to show that the use of Sim\&Size during the standard endovascular procedure, compared with a standard endovascular procedure without Sim\&Size, reduces both the actual costs of the hospital stay and the rate of perioperative complications.
The 2 groups in the trial
- Manual planningExisting treatment, for comparison
Investigator will use manual two-dimensional measurements to assess which neurovascular implantable medical device to use to treat the intracranial aneurysm.
Treatment: Manual planning of endovascular procedure
- Sim&Size planningTreatment being tested
Investigator will use Sim\&Size software, which allows for three dimensional representation of the aneurysm and for simulation of the placement of different types of devices, to support the choice of the neurovascular implantable medical device used to treat the intracranial aneurysm.
Treatment: 3D simulation of placement of neurovascular implantable medical device
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Record updated
- 13 May 2026