Integrated imaging system for stereotactic neurosurgery.

Talairach's method remains the most universal of all stereotactic methods. It makes it possible to go back to an examination left interrupted, but above all, it provides multiple lateral and coronal approaches in matters of epilepsy, radio-isotopes or photobiology. The advances achieved in modern imaging methods, notably CT and MRI, and the performance of modern computers have enabled us to devise an integrated imaging system meant to accelerate and make feasible calculations of penetrating trajectories, according to the position of the target as previously defined by CT and MRI sections, and taking into account the position of vessels given by angiography.

[Cranial osteosarcoma in Paget's disease].

A patient with Paget's disease developed an osteogenic sarcoma of the cranium. This emphasizes the need to conduct full neuroradiological investigations, including a CT scan and even selective arteriography as well as standard radiographs, whenever the possible existence of such a lesion is suspected, to determine therapeutic strategy.