Zweidimensionale Ultraschall-Diagnostik von Hirntumoren und Subduralh�matomen mit dem elektronischen Sektor-Scan

Abstract

Electronic sector scanning (ESS) is a new two-dimensional ultrasonic technique which provides continuous and instantaneous cross-sections of intracranial structures through the intact skull, including the ventricles and large cerebral arteries, by means of a stationary probe. 2. The efficiency of the ESS in the diagnosis of brain tumors and extracerebral hematomas in 295 neuroradiologically controlled cases out of an unselected number of patients during 1972-1974 is described. 3. Supratentorial brain tumors can be detected directly with the ESS by abnoramal reflections of the tumors as well as indirectly by displacement of intracranial reference structures, mainly the ventricular borders. In 239 cases of suspected brain tumor, 126 were neurodiologically confirmed as supratentorial brain tumors. Among these 126 brain tumors the correct localization was determined by the ESS in 86.5%. 4. The highest reliability of the ESS proved to be the direct demonstration of frontal tumors (93%), whereas space-occupying lesions near the midline could be shown only in 79%. Up to now there have been difficulties in the diagnosis of tumors situated near bony structures, e.g., calvarian meningiomas. 5. Subdural hematomas (56 patients) could be lateralized correctly in 93%. Hwever, direct demonstration of the border of the hematomas could be achieved only in 48,2%. Chronic subdural hematomas in children are easier to recognize and the border could be demonstrated in 18 out of 19 cases. 6. The clinical applicability and diagnostic values of the ESS as a nontraumatic investigation procedure are discussed in comparison to cerebral angiography, pneumoencephalography, brain scintigraphy, and CAT scan. scintigraphy, and CAT scan.

Diagnosing Hydrocephalus in Infants by Ultrasound Sector Scanning Through the Open Fontanelles

“…So in 1975, having 2 years of experience with the 2 dimensional ultrasound sonography, Grttmme decided due to unsatisfactory results: within the present technical conditions B-scanning in measuring ventricles is not to be developed any further. Technical improvements of the last years, e. g. electronic sector scanning (Somer 1968, Freund 1973, Voigt 1975) provided a more accurate presentation, indeed, particularly of pathological intracerebral processes, but a safe interpretation only was possible by much experience. By the fast spreading of computerized axial tomography (CAT) the development of 2 dimensional ultrasound sonography slowed down (de Vlieger 1980).…”