Jebavy P, Oppelt A
Kardiologiia. 1982 Oct;22(10):91-4.
Two methods of assessing regional ventilation distribution-dynamic scintigraphy with 133Xe-labelled gas inhalation, and pulmonary scanning following the inhalation of 113mIn-labelled colloid aerosol-were subjected to critical review. A total of 10 normal controls, 5 cardiac patients and 12 patients with pulmonary diseases were examined using both techniques. The subjective imaged of the lungs converged only in 24% of the cases. A considerable discrepancy in the results of the two investigation procedures was noted in 76%, primarily due to the sedimentation of inhaled colloid along the air passages. It is suggested that radio-aerosol scanning cannot visualize actual distribution of ventilation throughout the lungs; however, the method can be useful in the diagnosis of minor bronchial patency disorders before dynamic investigation using 133Xe can detect any changes, or where gamma-counter and analyzer facility is not available. To provide an accurate assessment of regional ventilation, the gas inhalation method should be combined with the dynamic analysis using a gamma-counter and analyzer facility, and perhaps a computer.
对两种评估局部通气分布的方法进行了严格审查，这两种方法分别是吸入133Xe标记气体的动态闪烁扫描法，以及吸入113mIn标记胶体气溶胶后的肺部扫描法。使用这两种技术对总共10名正常对照者、5名心脏病患者和12名肺部疾病患者进行了检查。肺部的主观影像仅在24%的病例中一致。在76%的病例中，两种检查程序的结果存在相当大的差异，主要是由于吸入的胶体沿气道沉降。有人认为，放射性气溶胶扫描无法显示整个肺部通气的实际分布；然而，该方法在诊断轻度支气管通畅障碍方面可能有用，在使用133Xe进行动态检查能检测到任何变化之前，或者在没有伽马计数器和分析仪设备的情况下。为了准确评估局部通气，气体吸入法应与使用伽马计数器、分析仪设备，或许还有计算机的动态分析相结合。
