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OpenTrials
Completed

NCT Number: NCT03681665

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

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.

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Key information

Conditions

Abdominal Abscess Abscess Infections Suppuration

Age range

20 year–100 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine

Seoul, 03722, South Korea

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

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

Treatment and study plan

ultralow dose abdominopelvic CT

Other

In the patient cohort with abdominal abscess, ultralow dose abdominopelvic CT will be performed as a follow-up protocol. Ultralow dose CT has approximately 80~90% reduced radiation dose compared to standard dose CT.

Primary outcomes

  1. Score of subjective image quality of CT image

    Time frame: 1 month

    Score of subjective image quality of CT images consists of overall subjective image quality, noise, diagnostic ability, and artifact.

Secondary outcomes

  1. Effective radiation dose: CTDIvol(volume CT dose index), DLP(dose length product), effective dose(DLPx0.015)

    Time frame: 1 month

    Effective radiation dose between standard dose CT and ultra-low dose CT will be compared

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Sep 24, 2018
Registry last updated
Sep 29, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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