気管支喘息における¹³¹I-MAA肺シンチグラムの観察

抄録

A correlative study of pulmonary scintigraphic findings and clinical status in asthmatic attack was performed, and the relationship of the degree of abnormal perfusion in symptom-free period to ventilatory function tests, ages and duration of illness was also observed.
The following results were obtained:
1) Focal perfusion abnormalities were seen in 67 of 84 cases in asthmatic attack. Another 17 cases with mild attack showed no uneven distribution.
2) With the intensity of attack, the cases with greater perfusion abnormality were increased. However, in the cases with mild and moderate attack, the perfusion abnormality showed a wide dispersion.
3) Decreases or defects of scanning was seen multiply and bilateraly in about 40% of cases with very slight attack and was increased along with the intensity of the attack.
4) The frequency of decreases or defects of scanning in each lung field increased with the intensity of the attack. Abnormality in middle lung field was noted more frequently in the cases with mild attack.
5) In a case with long-standing asthmatic attack, repeated scannings showed various changes in location of diminished perfusion.
6) At the time of symptom-free period, abnormality of perfusion was frequently seen in cases under 55% of FEV _1.0%, over the age of 40 or longer than 7 years of duration of illness.