Positive contrast roentgenologic studies are useful in neuroradiology chiefly when done in conjunction with image intensification and with cineroentgenography. In our [See figure in the PDF file] service the contrast material used is pantopaque. This technique is employed for ventriculography, cisternography and myelography. The ventriculography is mainly indicated for the study of midline lesions. The cisternography is very helpful in the early diagnosis of acoustic neurinomas and other tumors of the posterior fossa. The cine myelography is particularly superior to the routine technique in the thoracic region. Illustrative cases are presented.*