The Image Characteristics of Adult Appendix on Computed Tomography

December 15, 2025 updated by: National Taiwan University Hospital
A retrospective analysis of CT images from adult patients who underwent scans for reasons unrelated to appendicitis. The study period will span from January 2010 to August 2024. Through this research, we hope to gain a comprehensive understanding of appendix positioning and compile definitive data on its most common locations.

Study Overview

Status

Active, not recruiting

Conditions

Detailed Description

The investigators conducted a retrospective analysis of CT images from adult patients who underwent scans for reasons unrelated to appendicitis. The study period will span from January 2010 to August 2024. Through this research, we hope to gain a comprehensive understanding of appendix positioning and compile definitive data on its most common locations.

Study Type

Observational

Enrollment (Estimated)

2000

Contacts and Locations

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

Study Locations

  • Taiwan
      • Taipei, Taiwan, 100
        • National Taiwan University Hospital

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

Yes

Sampling Method

Non-Probability Sample

Study Population

The investigator analyze the location of the normal appendix.

Description

Inclusion Criteria:

CT of patients without appendicitis

Exclusion Criteria:

CT of patients with appendicitis

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Location of appendix
Time Frame: 1 day
Analyze the location and categorize to seven groups: preileal, postileal,promontory, pelvic, subcecal, paracecal, retrocecal
1 day

Collaborators and Investigators

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

Sponsor

National Taiwan University Hospital

Investigators

  • Principal Investigator: Wan-Ching Lien, NTUH

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 (Actual)

November 1, 2024

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

November 26, 2024

First Submitted That Met QC Criteria

November 26, 2024

First Posted (Actual)

December 2, 2024

Study Record Updates

Last Update Posted (Actual)

December 17, 2025

Last Update Submitted That Met QC Criteria

December 15, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

  • 202410072RINB

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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