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Journal of the Korean Academy of Rehabilitation Medicine 1999;23(4):821-827.
Quantitative Evaluation of Dysphagia Using Scintigraphy.
Kwon, Bum Sun , Lee, Seong Jae , Hyun, Jung Keun , Jung, In Sung , Park, Seung Tae , Chung, Sun Young
Department of Rehabilitation Medicine, College of Medicine, Dankook Univerisity.
신티그라피를 이용한 연하곤란의 정량적 평가
권범선, 이성재, 현정근, 정인성, 박승태, 정선용
단국대학교 의과대학 재활의학교실

To investigate the clinical usefulness of scintigraphy for the evaluation of dysphagia in patients with brain lesion and to clarify the most useful quantitative parameter for detection of aspiration using scintigraphy.

For 42 patients with dysphagia, swallowing evaluations were done by videofluoroscopy and scintigraphy. According to videofluoroscopic findings these patients were grouped into three; aspiration, laryngeal penetration and no penetration group. Quantitative parameters from scintigraphy were measured and compared among three patients groups and normal control; these parameters were oral discharge time (ODT), pharyngeal transit time (PTT), oral residue (OR), pharyngeal residue (PR), pharyngeal swallowing efficiency (PSE) and oro-pharyngeal swallowing efficiency (OPSE). Sensitivity and specificity of these parameters detecting aspiration were also evaluated according to the videofluoroscopic findings.

In aspiration group ODT, PTT, PSE and OPSE were 1.18⁑1.14 sec, 1.80⁑1.49 sec, 86.05⁑61.42%/sec and 38.21⁑28.65%/sec respectively, all of which were significantly different from the other groups, but OR and PR were not different statistically. According to the ROC (Relative Operating Characteristic) table, sensitivity and specificity of OPSE were 72.7 and 80.7% respectively, which were the highest among the parameters.

Scintigraphy was useful to quantitative dysphagia in patients with brain lesion. Sensitivity and specificity of swallowing efficiency was higher than time and residue parameters. OPSE was considered to be the most useful quantitative parameter for detecting aspiration.

Key Words: Scintigraphy, Dysphagia, Swallowing efficiency, Stroke


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