Clinical trial Recruiting at 3 sites Interventional Ages 18 and up

Clinical and economic impact of Sim&Size 3D simulation for planning implants in unruptured intracranial aneurysms

Official title: 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.

Run by Sim&Cure · NCT07433075 · Data updated 2026-11-12

This trial will test whether using Sim&Size 3D simulation software to plan implantable devices reduces complications, procedure time, radiation exposure, and costs for adults having endovascular treatment of unruptured intracranial aneurysms.

More Unruptured Intracranial Aneurysm trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment576 (estimated)
SponsorSim&Cure
Industry-sponsored
Drugs / interventionsradiation
Locations6 sites (Angers and 5 other locations)
StatusRecruiting
StartedApril 10, 2026
Main results expectedJune 2028
Study endsJune 2028
Registry record updatedMay 13, 2026
Trial IDNCT07433075 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) scheduled for endovascular treatment of an unruptured intracranial aneurysm whose planned implant model is present in the Sim&Size database, who are treated at a participating French center and covered by the French social security system, and who provide informed consent.

Probably not a fit

Patients with ruptured aneurysms, planned stent-only procedures, prior implants in the target area, giant aneurysms or poor-quality 3D imaging, significant imaging artifacts, or complex multiple-aneurysm procedures planned in a single session are excluded and unlikely to benefit from this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, multicenter interventional study comparing 3D simulation-guided device planning using the Sim&Size software with conventional manual 2D planning for endovascular treatment of unruptured intracranial aneurysms. Participating centers will use the simulation when the planned implant model is available in the Sim&Size database and will collect clinical, procedural, radiation, and cost-related outcomes. Key endpoints include need for device repositioning or additional devices, perioperative complications, procedure duration, imaging radiation dose, and economic impact. The study is being conducted at multiple French hospitals and requires patient consent and French social security affiliation.

Why it matters

Potential benefit: If successful, the software could reduce intra-procedural device maneuvers, lower complication risk, shorten procedures, decrease radiation exposure, and cut healthcare costs.

How similar studies have gone: Prior observational and pilot studies of 3D simulation and virtual sizing in neurovascular and other endovascular fields have suggested improved device sizing and fewer intra-procedural adjustments, but randomized evidence is limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 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

Exclusion Criteria:

* Patients scheduled to undergo endovascular treatment with stents only
* Patients presenting for treatment of a ruptured aneurysm
* 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 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.
* Patients for whom pre-planning was performed using Sim\&Cure software prior to patient randomization.
* Pregnant or breastfeeding women.
* Patients under guardianship or conservatorship.
* Emergency situations.

Where it's running

  • CHU d'Angers
    Angers, France
    Recruiting
  • CHU de Bordeaux
    Bordeaux, France
    Recruiting
  • Hôpital Bicêtre AP-HP
    Le Kremlin-Bicêtre, France
    Recruiting
  • Hôpital de La Timone
    Marseille, France
    Not yet recruiting
  • Fondation Rothschild
    Paris, France
    Not yet recruiting
  • CHU de Reims
    Reims, France
    Not yet recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.