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Intracranial AneurysmIDEALNCT06118840

IDEAL Study: Blinded RCT for the Impact of AI Model for Cerebral Aneurysms Detection on Patients' Diagnosis and Outcomes

A study testing True-AI-integrated intracranial aneurysms diagnosis strategy in people with Intracranial Aneurysm and CT Angiography, run by Jinling Hospital, China at 21 sites in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This study (IEDAL study) intends to prospectively enroll more than 6450 patients who will undergo head CT angiography (CTA) scanning in the outpatient clinic. It will be carried out in 21 hospitals in more than 10 provinces in China. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
What is being tested?
True-AI-integrated intracranial aneurysms diagnosis strategy
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
6,450 participants
Where
21 sitesChina
Study dates
20 May 2024to Dec 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Adult inpatients and outpatients who are scheduled for head CTA scanning.

Who cannot join

  • Age under 18 years.
  • Patients with contraindications to CTA.
  • Modified Rankin Scale (mRS) score > 3.
  • Refuse to sign informed consent.
  • Participation in other clinical studies of intracranial aneurysms.
  • Patients with failed head CTA scanning or incomplete image data, or poor image quality.

Trial locations and contacts

21 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Longjiang Zhang, MD contact

+8613405833176

kevinzhlj@163.com

21 sites in 1 country

China21 sites, 21 recruiting
  • The First Hospital of Jilin University

    Changchun, Jilin

    Zhang, 86-13843109555, huimao@jlu.edu.cn

    Recruiting
  • Guizhou Provincial People's Hospital

    Guiyang, Guizhou

    Wang, 86-18685193598, wangrongpin@126.com

    Recruiting
  • Hainan General Hospital

    Haikou

    Chen, 86-13876901502, fenger0802@163.com

    Recruiting
  • The First Affiliated Hospital of University of Science and Technology of China

    Hefei, Anhui

    Wei, 86-13856005207, weiweill@126.com

    Recruiting
  • Shandong Provincial Hospital Affiliated to Shandong First Medical University

    Jinan, Shandong

    Wang, 86-15168886672, wxming369@163.com

    Recruiting
  • The First People's Hospital of Kashgar Region

    Kashgar

    Nijiati, 86-13565662557, mydl0911@163.com

    Recruiting
  • The First Affiliated Hospital of Kunming Medical University

    Kunming, Yunnan

    He, 86-13888967549, kmmu_hb@163.com

    Recruiting
  • University Second Hospital

    Lanzhou

    Zhou, 86-15193107916, zjl601@163.com

    Recruiting
  • First People's Hospital of Lianyungang

    Lianyungang

    Gu, 86-13815617997, guyan2020@njmu.edu.cn

    Recruiting
  • Ma'anshan People's Hospital

    Ma’anshan

    Yang, 86-13365557527, yanghk1979@163.com

    Recruiting
  • Research Institute Of Medical Imaging Jinling Hospital

    Nanjing, Jiangsu, 210018

    longjiang Zhang, MD, 13405833176, kevinzhlj@163.com

    Recruiting
  • BenQ Medical Center, Affiliated BenQ Hospital of Medical School, Nanjing Medical University

    Nanjing

    Zhou, 86-13813951215, daniezhou@126.com

    Recruiting
  • Long Gang Central Hospital of Shenzhen

    Shenzhen

    Zhang, 86-18026971278, 18819818005@163.com

    Recruiting
  • Shiyan People's Hospital

    Shiyan, Hubei

    Li, 86-13597909005, lish1981@126.com

    Recruiting
  • The Affiliated Suqian First Hospital of Nanjing Medical University

    Suqian

    Xu, 86-18012186660, keyisq@163.com

    Recruiting
  • Tianjin Medical University General Hospital

    Tianjin

    Wang, 86-13820976417, wangjunping_tj@163.com

    Recruiting
  • Yidu Central Hospital Affiliated to Shandong Second Medical University

    Weifang, Shandong

    Feng, 86-13562606690, fengqiang220812@163.com

    Recruiting
  • The First Affiliated Hospital of Wannan Medical College

    Wuhu, Anhui

    Zhou, 86-18110876440, zhouyunfeng808@163.com

    Recruiting
  • Affiliated Hospital of Xuzhou Medical University

    Xuzhou, Jiangsu

    Hu, 86-15262038898, hcfxz@163.com

    Recruiting
  • General Hospital of Ningxia Medical University

    Yinchuan

    Wang, 86-13995109434, xdw80@yeah.net

    Recruiting
  • First Affiliated Hospital of Zhengzhou University

    Zhengzhou, Henan

    Zhang, 86-13673663923, zyg01578@126.com

    Recruiting

Other trials in China

About this study

Official title: Assessing the Impact of an Artificial Intelligence-Based Model for Intracranial Aneurysm Detection in CT Angiography on Patients' Diagnosis and Outcomes: The IDEAL Study - A Web-Based Multicenter, Double-Blinded Randomized Controlled Trial

This study (IEDAL study) intends to prospectively enroll more than 6450 patients who will undergo head CT angiography (CTA) scanning in the outpatient clinic. It will be carried out in 21 hospitals in more than 10 provinces in China. The patient's head CTA images will be randomly assigned to the True-AI and Sham-AI group with a ratio of 1:1, and the patients and radiologists are unaware of the allocation. The primary outcomes are sensitivity and specificity of detecting intracranial aneurysms. The secondary outcomes focus on the prognosis and outcomes of the patients.

Read the detailed description

A multicenter, prospective, double-blind, randomized controlled trial will be conducted (IDEAL study). Patients who are scheduled to undergo cranial CT angiography (CTA) scanning will be randomly divided into two groups with a ratio of 1:1, one of the group will be assigned to True-AI aided intracranial aneurysms diagnosis strategy (True-AI group) and the other will be assigned to Sham-AI aided intracranial aneurysms diagnosis strategy (Sham-AI group, which has a sensitivity close to 0% and a similar specificity to True-AI). The primary outcomes are diagnostic sensitivity and specificity of detecting aneurysms. Secondary endpoints include other diagnostic performance indexes for intracranial aneurysms; diagnostic performances for other intracranial lesions for intracranial arterial stenosis, occlusion, and intracranial tumors; detection rates of intracranial lesions according to Radiology Reports; workload of head CTA interpretation; resource use; treatment-related indexes during patient follow-up (e.g. clinical follow-up, hospitalization, rate of patients undergoing DSA); life quality; outcomes of aneurysm-related events; repeat head CTA or MRA at 12-month follow; cost-effectiveness analysis between intervention and control arm to evaluate the short- and longterm influence of AI system to the routine practice and patients' prognosis and outcomes.

Being tested
True-AI-integrated intracranial aneurysms diagnosis strategy, Sham-AI-integrated intracranial aneurysms diagnosis strategy
Medical subject headings
Intracranial Aneurysm

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • True-AI-integrated intracranial aneurysms diagnosis strategyDevice

    The True-AI deep-learning based model for intracranial aneurysms detection had a patient-wise sensitivity, lesion-wise sensitivity and specificity of 0.96, 0.87, and 0.80 in the internal validation dataset.

  • Sham-AI-integrated intracranial aneurysms diagnosis strategyDevice

    The Sham-AI deep-learning based model for intracranial aneurysms detection is designed to have a sensitivity close to 0% and a similar specificity to the True-AI. In the internal validation dataset, the Sham-AI had a patient-wise sensitivity, lesion-wise sensitivity, specificity of 0.02, 0.01, and 0.80, respectively.

Study groups in NCT06118840
Study groupRoleWhat they receive
True-AI-integrated intracranial aneurysms diagnosis strategyExperimentalFor patients who underwent head CTA and assigned to True-AI group, they will be diagnosed by a radiologist who are aided by the True-AI-integrated intracranial aneurysms diagnosis strategy.
Receives: Device: True-AI-integrated intracranial aneurysms diagnosis strategy
Sham-AI-integrated intracranial aneurysms diagnosis strategySham comparatorFor patients who underwent head CTA and assigned to Sham-AI group, they will be diagnosed by a radiologist who are aided by the Sham-AI-integrated intracranial aneurysms diagnosis strategy. To mimic the True-AI, the Sham-AI had a sensitivity close to 0% and a similar specificity to the True-AI.
Receives: Device: Sham-AI-integrated intracranial aneurysms diagnosis strategy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To compare diagnostic sensitivity of intracrnial aneurysms between intervention and control arm.

    The proportion of examinations in which at least one aneurysm is discovered and indicated among groundtruth aneurysms.

    Measured: 6 months.

  2. To compare diagnostic specificity of intracrnial aneurysms between intervention and control arm.

    The proportion of examinations in which no aneurysms are spotted by the reader among groundtruth non-aneurysms.

    Measured: 6 months.

Secondary outcomes (30)
  1. To compare other diagnostic performances for intracranial aneurysms between intervention and control arm.

    To compare accuracy, lesion-wise sensitivity, positive predictive value and negative predictive value for intracranial aneurysms between intervention and control arm.

    Measured: 6 months.

  2. To compare diagnostic performances for other intracranial lesions between intervention and control arm.

    The sensitivity, specificity, accuracy, positive predictive value and negative predictive value for intracranial arterial stenosis, occlusion, and intracranial tumors are compared between intervention and control arm.

    Measured: 6 months.

  3. To compare detection rates of intracranial lesions according to Radiology Reports between intervention and control arm.

    Detection rates of intracranial aneurysms, intracranial arterial stenosis, occlusion, and intracranial tumors according to Radiology Reports are compared between intervention and control arm.

    Measured: 6 months.

  4. To assess the workload of head CT angiography interpretation.

    Time of interpreting head CT angiography images, number of consensus meeting are compared between intervention and control arm.

    Measured: 6 months.

  5. To assess resource use.

    The number of care encounters (in-person) during follow-up, total number of outpatient encounters for aneurysm referral, total number of cerebral artery disease testing are compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  6. Rate of patients of subsequent hospitalization during patient follow-up.

    Rate of patients of subsequent hospitalization is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  7. In-hospital mortality rate during patient follow-up.

    In-hospital mortality rate is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  8. Morbidity (modified Rankin Score ≥ 3) from intracranial haemorrhage or treatment during patient follow-up.

    Morbidity (modified Rankin Score ≥ 3) from intracranial haemorrhage or treatment is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  9. Length of hospital stay during patient follow-up.

    Length of hospital stay is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  10. Rate of hospitalization for intracranial aneurysms during patient follow-up.

    Rate of hospitalization for intracranial aneurysms is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  11. Rate of patients undergoing digital subtraction angiography (DSA) during patient follow-up.

    Rate of patients undergoing digital subtraction angiography (DSA) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  12. Detection rate of intracranial aneurysms among digital subtraction angiographys (DSA) during patient follow-up.

    Detection rate of intracranial aneurysms among digital subtraction angiographys (DSA) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  13. Detection rate of no abnormality among digital subtraction angiographys (DSA) during patient follow-up.

    Detection rate of no abnormality among digital subtraction angiographys (DSA) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  14. Distribution of the methods for aneurysms management (conservative/coil/clip/others) during patient follow-up.

    Distribution of the methods for aneurysms management (conservative/coil/clip/others) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  15. Rates of aneurysm treatment related complications during patient follow-up.

    Rate of aneurysm treatment related complications (intraoperative rupture, stroke, et al) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  16. Rate of recurrence or residual of intracranial aneurysm after surgery during patient follow-up.

    Rate of recurrence or residual of intracranial aneurysm after surgery is compared between intervention and control arm.

    Measured: At 12-month follow-up.

  17. Life quality assessed by EuroQol 5-Dimensional, 5-Level (EQ-5D-5L) during patient follow-up.

    Life quality assessed by EuroQol 5-Dimensional, 5-Level (EQ-5D-5L) scores are compared between intervention and control arm, which ranges from 5 to 25, and higher scores mean a worse outcome.

    Measured: At 3-month and 12-month follow-up.

  18. Restrictions in daily activities assessed by Utrecht Scale for Evaluation of Rehabilitation-Participation (USER-P) scores during patient follow-up.

    Restrictions in daily activities assessed by Utrecht Scale for Evaluation of Rehabilitation-Participation (USER-P) scores are compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  19. Sleep quality assessed by Pittsburgh Sleep Quality Index (PSQI) during patient follow-up.

    Sleep quality assessed by Pittsburgh Sleep Quality Index (PSQI) is compared between intervention and control arm, which ranges from 0 to 21, and higher scores mean a worse outcome.

    Measured: At 3-month and 12-month follow-up.

  20. Depression Screening assessed by Patient Health Questionnaire-9 (PHQ-9) scores during patient follow-up.

    Depression Screening assessed by Patient Health Questionnaire-9 (PHQ-9) scores are compared between intervention and control arm, which ranges from 0 to 27, and higher scores mean a worse outcome.

    Measured: At 3-month and 12-month follow-up.

  21. Anxiety and depression assessed by Hospital Anxiety and Depression Scale (HADS) scores during patient follow-up.

    Anxiety and depression assessed by Hospital Anxiety and Depression Scale (HADS) scores are compared between intervention and control arm, which ranges from 0 to 21, and higher scores mean a worse outcome.

    Measured: At 3-month and 12-month follow-up.

  22. General health assessed by Short-Form 36 Health Survey (SF-36) scores during patient follow-up.

    General health assessed by Short-Form 36 Health Survey (SF-36) scores are compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  23. Functional outcome assessed by Modified Rankin Scale (mRS) scores during patient follow-up.

    Functional outcome assessed by Modified Rankin Scale (mRS) scores are compared between intervention and control arm, which ranges from 0 to 5, and higher scores mean a worse outcome.

    Measured: At 3-month and 12-month follow-up.

  24. All-cause mortality during patient follow-up.

    All-cause mortality is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  25. Rate of aneurysm growth during patient follow-up.

    Rate of aneurysm growth is compared between intervention and control arm.

    Measured: At 12-month follow-up.

  26. Rate of aneurysm rupture during patient follow-up.

    Rate of aneurysm rupture is compared between intervention and control arm.

    Measured: At 12-month follow-up.

  27. Rate of subarachnoid hemorrhage (SAH) during patient follow-up.

    Rate of subarachnoid hemorrhage (SAH) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  28. Rate of other types of stroke (hemorrhagic stroke, ischemic stroke) during patient follow-up.

    Rate of other types of stroke (hemorrhagic stroke, ischemic stroke) is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  29. Mortality of aneurysms-rupture during patient follow-up.

    Mortality of aneurysms-rupture is compared between intervention and control arm.

    Measured: At 3-month and 12-month follow-up.

  30. Morphological change by head CTA or magnetic resonance angiography at the 12-month follow-up.

    Morphological change by head CTA or magnetic resonance angiography is assessed.

    Measured: At 12-month follow-up.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Nov 2023
  2. Study start20 May 2024
  3. Primary completionJul 2026 (estimated)
  4. Study completionDec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
6,450 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06118840
Sponsor's protocol ID
2022NZKY-015-05
Acronym
IDEAL
Status last verified
Oct 2025
First submitted
29 Aug 2022
Last updated
7 Oct 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Shi Z, Hu B, Lu M, Chen Z, Zhang M, Yu Y, Zhou C, Zhong J, Wu B, Zhang X, Wei Y, Zhang LJ; China Aneurysm AI Project Group. Assessing the Impact of an Artificial Intelligence-Based Model for Intracranial Aneurysm Detection in CT Angiography on Patient Diagnosis and Outcomes (IDEAL Study)-a protocol for a multicenter, double-blinded randomized controlled trial. Trials. 2024 Jun 4;25(1):358. doi: 10.1186/s13063-024-08184-9.

    PubMed 38835091

Questions about this trial

What is this clinical trial studying?

A study testing True-AI-integrated intracranial aneurysms diagnosis strategy in people with Intracranial Aneurysm and CT Angiography, run by Jinling Hospital, China at 21 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 7 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 21 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Longjiang Zhang, MD (+8613405833176, kevinzhlj@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To compare diagnostic sensitivity of intracrnial aneurysms between intervention and control arm. (time frame: 6 months.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06118840, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Oct 2025.

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