A MULTI-CHANNEL CATHODE-RAY PHONOCARDIOGRAPH
نویسندگان
چکیده
منابع مشابه
A multi-channel cathode-ray phonocardiograph.
The difficulties of recording the faint murmurs of early rheumatic valvulitis are well known, and for this reason it was considered advisable to develop a cathode-ray phonocardiograph. This is theoretically the ideal recording device owing to its minimal inertia and high sensitivity. This phonocardiograph is intended to provide objective confirmation of clinical findings on auscultation, record...
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A phonocardiograph employing a cathode-ray tube is the theoretical ideal since the natural frequency of the instrument is sufficiently high to avoid distortion of the vibrations to be recorded, the amplitude of the deflections is directly proportional to the movements which excite them, and the cathode-ray beam has minimal inertia and is fully damped. With any of the popular recording devices i...
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ژورنال
عنوان ژورنال: Heart
سال: 1953
ISSN: 1355-6037
DOI: 10.1136/hrt.15.2.130