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Diagnostic Procedures
May 1, 1967

Reflected Ultrasound in the Detection and Localization of Pleural Effusion

Author Affiliations

From the Cardiovascular Clinical Research Center, Robinette Foundation, Department of Medicine, Hospital of the University of Pennsylvania, and the Electromedical Division of the Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia.

JAMA. 1967;200(5):399-402. doi:10.1001/jama.1967.03120180087013
Abstract

Reflected ultrasound, using the echo-ranging technique, has had increasing application as a diagnostic method over the past few years. Subsequent to the introduction of echoencephalography in 1955, the technique has been widely accepted as a diagnostic procedure in the determination of space-occupying lesions within the skull.1 The technique has also proved to be of value in the delineation of soft-tissue structures within the abdomen, the diagnosis of pelvic masses, and the measurement of fetal head size.2,3 In cardiology, ultrasound has provided a method of proved accuracy in the diagnosis of mitral valve disease and has been of value in the detection of pericardial effusion and atrial tumors.4-8 In 1964, Pell presented the ultrasound pattern obtained from the chest of one patient with pleural effusion and discussed the pattern which might be expected following thoracentesis.9 The present study was undertaken to determine the accuracy and reliability of the

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