Visual estimation, tape measurement between fixed landmarks, and the UG aligned on fixed and anatomic landmarks were compared with the CROM goniometer, which was used as the reference standard.

Conclusion: a fair accuracy can be reached by echocardiography in the location of VSD on the basis of anatomic classification and the VSD size measurement.

Objective: To establish the measurement method of the normal orbital by X-ray computed tomography (CT) scan, which provided the anatomic data for the surgery of the orbital reconstruction.