Use of Iterative Reconstruction Method in Ultralow-dose CT for Follow-up of Patients With Intraabdominal Abscess: Comparison With Standard Dose CT

Completed

• Conditions: Abdominal Abscess
• Interventions: Other: ultralow dose abdominopelvic CT

• Registration Number: NCT03681665
• Lead Sponsor: Yonsei University

Brief Summary

Increasing radiation exposure by medical examinations is getting more concerns. For optimal medical imaging, reducing radiation exposure with preservation image quality is important. One of the solutions is use of iterative recontruction of CT examination. In this study, the investigators aimed to investigate the clinical feasibility of ultralow dose abdominopelvic CT with iterative reconstruction in patients with intraabdominal abscess. Patients with intrabdominal abscess usually undergo multiple CT examinations to evaluate treatment response. Therefore, ultralow dose CT can reduce unnecessary radiation exposure in these patients.

Detailed Description

Not available

Study Timeline

• Study Start: 2018-06-29
• Study First Submitted: 2018-09-17
• Study First Submitted QC: 2018-09-20
• Study First Posted: 2018-09-24
• Primary Completion: 2019-03-18
• Study Completion: 2019-03-18
• Status Verified: 2020-09
• Last Update Submitted: 2020-09-27
• Last Update Posted: 2020-09-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

1. patients who underwent standard dose CT for suspected intraabdominal abscess
2. patients who need follow-up CT to evaluate treatment response of abscess 3) Adult patient, 4) patients who agreed this study protocol

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Exclusion Criteria

1. pregnancy
2. patients with poor renal function (GFR < 30 mL/min/1/73m2)
3. Patients who have allergy to CT contrast media
4. Patients who are not cooperative (e.g., dementia)

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Abscess	ultralow dose abdominopelvic CT	Patients group with abdominal abscess

Primary Outcome Measures

Name	Time	Method
Score of subjective image quality of CT image	1 month	Score of subjective image quality of CT images consists of overall subjective image quality, noise, diagnostic ability, and artifact.

Secondary Outcome Measures

Name	Time	Method
Effective radiation dose: CTDIvol(volume CT dose index), DLP(dose length product), effective dose(DLPx0.015)	1 month	Effective radiation dose between standard dose CT and ultra-low dose CT will be compared

Trial Locations

Locations (1)

Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine; 🇰🇷 Seoul, Korea, Republic of