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A digitized, direct contact b-scanner for ophthalmic application

✍ Scribed by E. Holasek; A. Sokollu; E. W. Purnell

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 271 KB
Volume: 1
Category: Article
ISSN: 0091-2751
DOI: 10.1002/jcu.1870010109

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✦ Synopsis

Abstract

This paper presents the principles of a portable compact instrument utilizing a digital control system and providing B‐scan displays. The instrument is designed exclusively for ophthalmic applications. The system is comprised of a self‐contained scanning head and a signal display unit. The entire unit can easily be rolled to the patient's bedside or into the operating room. A programmed pulse generator provides signals for incremental angular positioning of the transducer as well as signals for the formation of the display. The transducer is moved by a stepping motor to establish the incremental sector scan. Display sweeps are generated by digital‐to‐analog conversion to circumvent the use of mechanically‐driven position sensors as used in conventional systems.

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