Without judicial review there would be no way to judge the constitutionality of laws. Period.
Are you kidding? That is exactly what SCOTUS does when they hear a case. The question of judicial review is not just about whether the judicial branch can determine a laws constituionality. Of course they do that. The question is how are they allowed to do it. Judicial review in my understanding essentially refers to the courts taking on the responsbility of determing the constitutionality of legislation WITHOUT actually hearing a case about it.
*facepalm*
Judicial review means just that. The JUDGES have the power to REVIEW, via an Article 3 case or controversy over which they have jurisdiction, legislative acts and other laws in order to determine their constitutionality. If there is no case they have no jurisdiction.
This is not rocket science.