Echocardiographic placement of cardiac tube in ventriculoatrial shunt. Technical note.

A new technique using an echocardiographic examination for preoperative visual assessment of the right atrium as an aid to accurate placement of a cardiac tube in a ventriculoatrial shunt is described. This method provides correct localization of the tube end, is safe for the patient, and is repeatable in the postoperative course.

[Intraoperative ultrasonography of brain tumors].

The 6-years results are described of intraoperative ultrasonic imaging of the brain tumors and are compared with the results of preoperative computerized tomography. On the basis of 169 cases it was shown that the lesions well visible in preoperative CT (with or without contrast) were also well delineated in USG. In cases of presence in CT with or without contrast of extensive isodense or hypodense area, USG could localize in all patients the tumor with suggestion of its morphology.