Quantification and Determinants of Occupational Xray Scatter Radiation Exposure of Operators and Assistants During Coronary Procedures - The Occupational SCAtter Radiation Registry
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 2,000
- 试验地点
- 1
- 主要终点
- Intra-procedural Xray scatter radiation exposure (µSv)
研究概览
简要总结
During diagnostic and interventional coronary procedures scatter radiation exposure is recorded with live-dosimeters at pre-specified anatomic regions of operators and sterile assistants. Scatter radiation data is correlated with detailed Xray exposure data and technical details of the procedure.
The purpose of the registry is:
- to establish scatter radiation reference values based on a large number of representative cath-lab procedures
- to identify technical and clinical factors predisposing for high scatter radiation exposure,
- to evaluate advanced radiation protection devices in clinical routine.
详细描述
Patients scheduled for diagnostic or interventional coronary procedures provide written informed consent for participating in the observational OSCAR Registry. During the corresponding procedures, scatter radiation exposure of operators and sterile assistants is recorded using Unfors RaySafe i3 digital live dosimeters (Unfors RaySafe AB, Billdal, Sweden) at 3 locations of the operator (1-frontal head at eye level, 2-left lateral head, 3-below the left shoulder) and at 2 locations of the sterile assistant (1-left neck and 2-below the left shoulder).
Raw data is collected in a central database and correlated with patient properties (age, BMI) and detailed Xray exposure data:
- Total dose-area product (DAP, unit of measure: Gy*cm2)
- Number of Xray image series
- Number of Images
- Radiation duration (Unit of measure: Seconds)
- Air kinetic energy released per unit mass (Kerma) Technical details of the procedure
- Access site,
- Clinical setting: acute or elective
- Number of catheters used during procedure
- Number of guidewires used during procedure
- Number of stents implanted during procedure
- Cumulative stent length (Unit of measure: mm)
- Use of rotational imaging
- Use of intracoronary pressure-wire
- Use of optical coherence tomography (OCT)
- Presence of bypass-vessels
- Any occurrence of complications
The purpose of the trial is to establish a large foundation of intra-procedural scatter radiation data from representative coronary procedures procedures enabling our group to
- Establish scatter radiation reference values based on a large number of representative cath-lab procedures
- Identify technical and clinical factors predisposing for high staff scatter radiation exposure
- Evaluate advanced radiation protection devices in clinical routine.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient scheduled for coronary angiography
- •Diagnostic procedure and PCI
- •Acute and elective procedures
- •Standard percutaneous coronary interventions (PCI) interventions
- •Chronic total occlusion (CTO) interventions
- •Set of at least 4 personal digital live dosimeters (PDL) worn by operator and sterile assistant for the entire duration of the procedure
- •Staff (operators and assistants) instructed on PDL positioning prior to procedure
排除标准
- •Less than 4 PDL present during the procedure
- •Incomplete data recording by at least 1 PDL
- •PDL data cannot be unambiguously assigned to a specific procedure or a specific anatomical recording site
- •Exchange of operator or assistant during procedure without transfer of all PDL
结局指标
主要结局
Intra-procedural Xray scatter radiation exposure (µSv)
时间窗: Duration of procedure
Xray scatter radiation dose recorded by 5 personal live dosimeters (3 allocated to the operator, 2 allocated to the sterile assistant).
次要结局
未报告次要终点
研究者
Mathias Brandt
MD, Senior Physician, Principal Investigator
Paracelsus Medical University