Actively Recruiting
Optimizing Low-dose Contrast Media Protocol for Low-kVp Abdominopelvic CT in Suspected Acute Appendicitis
Led by Bohyun Kim · Updated on 2025-05-28
292
Participants Needed
1
Research Sites
N/A
Total Duration
On this page
Sponsors
B
Bohyun Kim
Lead Sponsor
G
GE Healthcare
Collaborating Sponsor
AI-Summary
What this Trial Is About
This research aims to evaluate the use of low radiation dose abdominal CT combined with low dose contrast media to diagnose acute appendicitis in young patients. The main goals are to determine if this low-dose method can provide accurate diagnosis and how much radiation exposure can be reduced compared to standard CT scans. The study focuses on patients suspected of having acute appendicitis who are evaluated in the emergency department. Participants receive a weight-adjusted low-dose contrast media along with a low-radiation dose abdomen CT scan. The contrast media dose varies based on the CT device's automatic selection of the kVp value according to body size, aiming for a reduction in iodine dose by 10% to 30% depending on the kVp setting. The low-dose CT and contrast media protocol is designed to maintain diagnostic quality while lowering radiation and iodine exposure. During the study, participants will undergo the CT scan with this specialized low-dose protocol. Researchers will assess diagnostic accuracy for acute appendicitis, following operated patients for up to one month after surgery and non-operated patients for six months. The study includes monitoring for safety and effectiveness of the imaging method, with total participation time depending on patient treatment and follow-up visits.
CONDITIONS
Brief Title
Low-dose Contrast Media for Low-kVp Abdomen CT
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients in the emergency department with suspected acute appendicitis based on clinical examination
- Patients scheduled for contrast-enhanced CT of the abdomen and pelvis for diagnosis of suspected acute appendicitis
- Age between 19 and 44 years
You will not qualify if you...
- Patients who decline to participate
- Contraindications to contrast-enhanced CT (eGFR < 30 mL/min/173 m² or pregnant)
- Body mass index (BMI) of 30 or higher
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Single day
Participants undergo a weight-adjusted low-dose contrast media paired with low-radiation dose abdomen CT to diagnose suspected acute appendicitis.
1 visit (in-person)
Duration - Up to 6 months
Participants are monitored for diagnostic accuracy outcomes, including postoperative follow-up if operated or clinical follow-up if non-operated.
Follow-up visits depending on surgery status
Trial Site Locations
Total: 1 location
1
Seoul St. Mary's Hospital
Seoul, South Korea, 06591
Actively Recruiting
Research Team
B
Bohyun Kim, MD, PhD
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
DIAGNOSTIC
Number of Arms
1
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