A Review of Tracheal Dimensions in the Pediatric Population Using MRI
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 75
- 试验地点
- 1
研究概览
简要总结
To date, there have been no published reports of normal variations in tracheal dimensions for pediatric patients undergoing MRIs. While there are reports of normals in CT studies, the reported dimensions were for average areas and lengths over the entire length of the trachea and not for normal variation in the dimensions at various sites in the trachea. Moreover, CT measurements are likely not entirely applicable to MRI measurements. Since cardiac MRI has become the procedure of choice to document the presence of vascular rings as well as the significance of any ring that is found, there is a need for normal values to be generated. This would in turn permit physicians to determine in cases of documented vascular rings the severity of the tracheal stenosis/deformity if found.
详细描述
To date, there have been no published reports of normal variations in tracheal dimensions for pediatric patients undergoing MRIs. While there are reports of normals in CT studies, the reported dimensions were for average areas and lengths over the entire length of the trachea and not for normal variation in the dimensions at various sites in the trachea. Moreover, CT measurements are likely not entirely applicable to MRI measurements. Since cardiac MRI has become the procedure of choice to document the presence of vascular rings as well as the significance of any ring that is found, there is a need for normal values to be generated. This would in turn permit physicians to determine in cases of documented vascular rings the severity of the tracheal stenosis/deformity if found.
Hypothesis
Patients referred for cardiac MRIs to evaluate vascular rings will have significantly smaller tracheal dimensions (area, longest width, shortest width) based on a percentage of their maximal tracheal dimension in comparison with patients referred for cardiac MRIs for other indications.
I would propose to retrospectively review cardiac MRIs for tracheal dimensions in 25 consecutive patients referred for possible vascular rings and for 50 consecutive patients undergoing cardiac MRIs for other indications. As part of this study I would also propose to review the clinical findings that prompted the cardiac MRI to be ordered (i.e. respiratory symptoms, abnormal echocardiogram, abnormal CXR or barium swallow).
研究设计
- 研究类型
- Observational
- 观察模型
- Defined Population
- 时间视角
- Retrospective
入排标准
- 年龄范围
- — 至 21 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •25 consecutive patients referred for possible vascular rings 50 consecutive patients undergoing cardiac MRIs for other indications adequate axial double-inversion recovery images of sufficient quality to permit accurate measurement of variations in tracheal dimension.
排除标准
- •Those who do not meet inclusion criteria