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Hiroshi Okamura, MD; Yumi Sasaki, MD

Arch Otolaryngol Head Neck Surg. 1992;118(12):1316-1319.

Abstract
• Fine movement of laryngeal components was analyzed by digital subtraction laryngography with the use of a digital fluorography system. Two kinds of image processing modes, the super pulse image subtraction mode and the time interval difference mode, were used for this purpose. By the super pulse image mode, the distance and extent of movement of laryngeal components at vocal initiation and during phonation could be observed. By the time interval difference mode, the amount and direction of motion for a certain interval and fine movement, such as vocal initiation, were determined.

(Arch Otolaryngol Head Neck Surg. 1992;118:1316-1319)

Author Affiliations
From the Department of Otolaryngology, School of Medicine, Ehime (Japan) University.

Footnotes
Accepted for publication June 17, 1992.

Reprint requests to Department of Otolaryngology, School of Medicine, Ehime University, Shigenobu-cho, Onsen-gun, Ehime 791-02, Japan (Dr Okamura).

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