嬰兒腦部弧形真實時間超音波掃描之研究

The authors report the application if two-dimensional real-time bran imaging in imaging through the anterior fontannel. In the infants older than four months of age, the skull is often too allow mineralized to allow adequate penetration of the ultrasound, Therefore, brain imaging through the anterior fontannel is the preferred route for ultrasonic examination infants. Since July 1, 1981, the authors examined infants older than one month of age with suspected structural intracranial lesions by sector ultrasound if their anterior fontannels were still open Computed tomography was performed within 24 hours of the ultrasonic examinations. The images of the computed tomography and ultraound were compared in detail. The lesions which yielded abnormal findings were hydrocephalus congenital intracranial cystic lesion (Candy Walker cyst, arachnoid cyst), ventriculitis, brain atrophy, posterior fossa hemorrhage subdural effusion and intraventricular tumor. To achieve the best result, multiple imaging planes it eluding the coronal, saggital arid modified coronal planes should be used, A water bag placed between the transducer and sea p was found to he of help in imaging the suspected superficial lesions of the brain Disadvantages of ultrasonic brain imaging as compared with computed tomography of the brain are lad of high resolution and unavailability of contrast enhancement, However, despite these disadvantages, the noninvasiveness, the portability and lack of radiation exposure make this technique increasing important for diagnostic screening and follow-up of brain lesions of infants.