Perfusionscan could be the screen before pulmonary angiogram, and the important tool to observe therapy effect.
可作为肺动脉造影前的筛选，及临床疗效观察的重要手段。
2
If the standard was that thrombolytic therapy and pulmonary angiogram was effective, the accuracy was raised to 100%, perfusionscan completely accorded with pulmonary angiogram.
如果以溶栓治疗有效为标准则准确率增至100%。溶栓疗效观察肺灌注显像与肺动脉造影二者结果一致。
3
The cumulative dose from an initial noncontrast CT scan followed by a CT perfusion study, for example, isn't easy to assess.