Clinical Application of Time Interval Difference Subtraction Angiography and Its Evaluation in the Diagnosis of Heart Diseases / 介入放射学杂志

Time Interval Difference(TID)is a different type of subtraction method which can be used during Digital Subtraction Angiography(DSA)examination.The princi- ple,operation and results of TID were discussed,and about 300 examinations on different clinical cases were observed and the findings compared with that of DSA.It was found that the TID subtraction effect was more satisfactory than DSA,and it also reflected the hemo- dynamics and anatomical details more precisely.This paper included also analysis of TID manifestations of 12 different types of cardiac diseases.