Shapiro H M, Inacker J E, Obrist W D
Stroke. 1977 Jul-Aug;8(4):437-40. doi: 10.1161/01.str.8.4.437.
Non-invasive measurements of regional cerebral blood flow (133Xe inhalation or IV injection) require knowledge of the arterial 133Xe concentrations, which is usually estimated from the end-tidal expiration. An automated sampling system is described for measurement of end-tidal 133Xe concentration that can be used in both spontaneously breathing and mechanically ventilated patients. A comparison is made between the automatic sampling system and manual measurements performed on a continuous gas sample.
区域脑血流量的无创测量（吸入或静脉注射¹³³Xe）需要了解动脉血中¹³³Xe的浓度，通常通过潮气末呼出气来估算。本文描述了一种用于测量潮气末¹³³Xe浓度的自动采样系统，该系统可用于自主呼吸和机械通气的患者。文中还对自动采样系统与对连续气体样本进行的手动测量进行了比较。
