Ultrasonographic diagnosis of brain tumors in infancy.
Fourteen intracranial tumors were diagnosed by means of mechanical sector scanning through the infant's open fontanelle in a series consisting of 1150 examinations. In addition, integrated pulsed Doppler-sonography (duplex-scan technique) was used to diagnose malformations of intracranial vessels. We established five diagnostic criteria: high echogenic structures are mostly seen in solid tumors of the periventricular region; low echogenic structures are seen in infiltrating tumors of the cerebral tissue and they are difficult to recognize; echo-free structures correspond with a cystic process, a necrosis or malformation of vessels; indirect sonographic signs of a cerebral tumor are all changes in shape and size of the normal anatomic structures; and abnormal blood-perfusion of a marked region, e.g. caused by dilatations of vessels, can be proved by integrated pulsed Doppler-sonography.
D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007223:Infant; D002532:Intracranial Aneurysm / Q000175:diagnosis; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis; D008297:Male; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography