Validation means confirmation by examination and provision of objective evidence that the particular requirements for a specific intended use can be consistently fulfilled.
的验证手段，确认考试，并提供客观证据证明特定的要求，为某一特定用途，可始终履行。
To exlore the dignostic validation of CCD on atrium level shunt and compare it with CDV, 51 patients of atrial septal defect( ASD) received CDV and CCD examination before operation.
对51例房间隔缺损（ASD）患者术前进行彩色多普勒速度图（CDV）和彩色多普勒速度能量图（CCD）检查，对房水平分流的方向、分流束的边界连续性及彩色充填进行观察对比分析。
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