Low-dose, EKG-gated CT Validity for the Evaluation of Ascendant Aortic Aneurysm.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 66
- 试验地点
- 2
- 主要终点
- Measures validity (aorta diameter in mm from scan images)
研究概览
简要总结
We will demonstrate the validity of measurements with a low-dose, EKG-gated CT without contrast in the ascending aorta evaluation, compared with the current Angio-CT measurements.
详细描述
The actual protocol used in aorta evaluation consist of two CT-scans on the same study. The first scan that detects calcifications is using parameters with low-dose current, non EKG-gated and without contrast. The second scan uses iodine-contrast, EKG-gating and higher current dose to obtain higher image quality of diagnostic value.
The study will optimize the first scan parameters and compare the measures of the aorta diameters from the standard protocol.
By modifying the first scan parameters, we would demonstrate that the follow-up of an aortic aneurysm can safely be made with lower radiation exposure.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 60 Years 至 100 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •60 years old and more
- •85 bpm or less
排除标准
- •aortic material
- •EKG gating not possible
- •aorta pathology (thrombus, dissection)
研究组 & 干预措施
Subjects awaiting for an aortic evaluation
Subjects already waiting for an aortic evaluation, either a first diagnostic scan or follow-up of a known aneurysm.
Each subjects will have the two CT-scans on the same day.
干预措施: Modified Low-dose, EKG-gated CT without contrast for the evaluation of aortic aneurysm (Other)
结局指标
主要结局
Measures validity (aorta diameter in mm from scan images)
时间窗: 12 months
Comparing aorta diameters from the two modalities.
次要结局
- Radiation (in msev from scanner report)(12 months)
研究者
Paul Farand
MD, FRCPC, Professeur agréé, Directeur du service de cardiologie
Université de Sherbrooke