1. Magnetic resonance imaging of the cerebral aqueduct. Signal intensity time curves demonstrated by fast acquisition with multiple excitation (FAME)
- Author
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Gooskens Rh, van den Hout Jh, Witkamp Td, Bakker Cj, Feldberg Ma, van Dijk P, Willem P.Th.M. Mali, and Faber Ja
- Subjects
Adult ,Adolescent ,Aqueduct ,Signal ,Electrocardiography ,Cerebrospinal fluid ,Normal pressure hydrocephalus ,otorhinolaryngologic diseases ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Systole ,Aged ,Cerebrospinal Fluid ,Physics ,medicine.diagnostic_test ,business.industry ,Brain Neoplasms ,Cerebral Aqueduct ,Infant ,Magnetic resonance imaging ,General Medicine ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Hydrocephalus ,Cerebral aqueduct ,sense organs ,Nuclear medicine ,business - Abstract
Using cardiac-gated fast acquisition with multiple excitation (FAME), time curves of the cerebral aqueduct signals were derived in 19 healthy volunteers and 14 patients. A mean curve of the normal subjects was determined during systole. A relatively stable point of time was found at 270 msec after the R-wave supposed to be the reversal of the flow of cerebral-spinal fluid in the aqueduct. Different curves were noticed in complete aqueductal obstruction (n = 2); in other pathologic states, such as cerebral tumor (n = 3), normal pressure hydrocephalus (n = 3), and brain atrophy (n = 1), no different signal time curves were observed. Parameters such as aqueduct diameter, cerebro-spinal fluid volume and brain compliance are probably other important factors in aqueduct liquor flow.
- Published
- 1989