Use of Iterative Reconstruction Method in Ultralow-dose CT for Follow-up of Patients With Intraabdominal Abscess: Comparison With Standard Dose CT
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- Score of subjective image quality of CT image
研究概览
简要总结
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 20 Years 至 100 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •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
排除标准
- •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)
结局指标
主要结局
Score of subjective image quality of CT image
时间窗: 1 month
Score of subjective image quality of CT images consists of overall subjective image quality, noise, diagnostic ability, and artifact.
次要结局
- Effective radiation dose: CTDIvol(volume CT dose index), DLP(dose length product), effective dose(DLPx0.015)(1 month)