TY - JOUR
AU - Ter-Simonyan, V.
AB - ACCURACY OF MEASUREMENT WITH ULTRASONIC ECHO-ENCEPHALOGRAPH, "ECHO-11" V. E. Grechko and V. A. Ter-Simonyan A team of engineers at the institute has designed the first ultrasonic echo-encephalograph ("Echo-11") to be made in this country, for the diagnosis of illnesses and diseases of the brain (Fig. 1). The apparatus is an ultrasonic locator, the principal parts of which are a high-frequency generator, ultrasonic probes (converting electrical into ultrasonic oscillations and ultrasonic to electrical oscillations), amplifier, indicator unit and photorecording apparatus. The ultrasonic probes operate on frequencies of 0.88, 1.76 and 2.64 meps. Their main component is a barium titanate plate. With the apparatus it is possible to determine the presence and site of space-occupying formations in the brain (tumors, hemorrhages etc.), cerebral edema, and increase of intracerebral pressure. The main diagnostic criterion in echo-encephalography is the position of the midlIne structures of the brain, the reflected signal from which has been termed 'the middle echo (M-echo). Accuracy of mea- surement of the position of the M-echo is therefore of enormous practical importance for diagnosis of cerebral affections. No papers dealing with accuracy of measurement in ultrasonic examinations of the brain have been found. Practical investigations carried out by the authors 
TI - Accuracy of measurement with ultrasonic echo-encephalograph, “Echo-11”
JF - Biomedical Engineering
DO - 10.1007/BF00557548
DA - 2004-10-15
UR - https://www.deepdyve.com/lp/springer-journals/accuracy-of-measurement-with-ultrasonic-echo-encephalograph-echo-11-0FWOL0IJnI
SP - 111
EP - 115
VL - 1
IS - 2
DP - DeepDyve
ER -