求教that用法

115622901

Coronary angiography, a sophisticated method for diagnosing coronary disease that involves the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses x-rays to observe cardiac function.
如果是这样的话that后面的内容（involves the intruduction of a dye into the arteries of the heart）在语法上是应该修饰disease还是a sophisticated method?

TerraceHo

根據meaning應該是method。就算是限定性定從也會有跳躍修飾