Prospective Study of High-penetration Super-resolution Transcranial Ultrasound for Early Identification of Postoperative Intracranial Metallic Targets After Aneurysm Clipping (HPSR-TCUS Clip)

May 12, 2026 updated by: Cong Feng, Chinese PLA General Hospital

Clinical Model-Based Evaluation of High-Penetration Super-Resolution Transcranial Ultrasound for Early Diagnosis of Intracranial Metallic Foreign Bodies in Patients After Intracranial Aneurysm Clipping

To evaluate the patient-level early diagnostic performance of high-penetration super-resolution transcranial ultrasound for identifying intracranial metallic targets, and to further assess clip-level detection, localization, agreement, and its complementary value to routine postoperative imaging.This study does not alter routine clinical treatment. All participants will undergo standardized high-penetration super-resolution transcranial ultrasound within 3 hours after surgery. Postoperative CT is mandatory for all participants; CTA or other routine postoperative imaging will be obtained only when clinically indicated.

Study Overview

Status

Not yet recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

78

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

N/A

Sampling Method

Probability Sample

Study Population

Positive group: standardized high-penetration super-resolution transcranial ultrasound within 3 hours after surgery, plus routine postoperative CT and CTA/other routine imaging when clinically indicated.

Negative control group: standardized high-penetration super-resolution transcranial ultrasound within 3 hours after surgery, plus routine postoperative CT.

Description

Inclusion Criteria:

  1. Age 18-85 years;
  2. Positive group: patients undergoing intracranial aneurysm clipping with implanted metallic clips; negative control group: postoperative craniotomy patients without implanted clips;
  3. Ability to complete transcranial ultrasound within 3 hours after surgery;
  4. Availability of postoperative CT;
  5. Written informed consent from the participant or legally authorized representative.

Exclusion Criteria:

  1. Inability to complete standardized transcranial ultrasound;
  2. Missing postoperative CT;
  3. Inability to establish the composite reference standard;
  4. Presence of non-study-related metallic materials that may substantially interfere with target identification;
  5. Withdrawal of consent;
  6. Investigator judgment that continued participation is inappropriate.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Positive group
Metallic-clip model group
Negative control group
Negative postoperative control group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Patient-level sensitivity for identifying the presence or absence of intracranial metallic targets
Time Frame: Within 24 hours after surgery upon completion of composite reference standard adjudication
Within 24 hours after surgery upon completion of composite reference standard adjudication
Patient-level specificity for identifying the presence or absence of intracranial metallic targets
Time Frame: Within 24 hours after surgery upon completion of composite reference standard adjudication
Within 24 hours after surgery upon completion of composite reference standard adjudication

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Chinese PLA General Hospital

Investigators

  • Principal Investigator: Feng, PLA General Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 30, 2026

Primary Completion (Estimated)

April 30, 2027

Study Completion (Estimated)

April 30, 2027

Study Registration Dates

First Submitted

May 7, 2026

First Submitted That Met QC Criteria

May 7, 2026

First Posted (Actual)

May 13, 2026

Study Record Updates

Last Update Posted (Actual)

May 15, 2026

Last Update Submitted That Met QC Criteria

May 12, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • S2026-078-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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