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Evaluation of sleep apnea syndrome with low-field magnetic resonance fluoroscopy.

Abstract：

:The aim of this study was to assess the upper airway status of sleep apnea syndrome (SAS) patients with low-field MR fluoroscopy. Twenty patients with clinically diagnosed SAS underwent upper airway monitoring using MR fluoroscopy for 5 min while awake and for 30 min while asleep. A 0.064-T permanent-magnet MR imaging system was used for the study. No patients required any sedative drugs because of the very small gradient noise, except in one case. No occlusion was observed while patients were awake. Nine patients showed repeated occlusion at retropalatal (Rp) pharynx, whereas 11 demonstrated both simple Rp occlusion and combined retropalato-retroglossal (Rp + Rg) occlusions (complex occlusion). The mean frequency of occlusion in complex cases was significantly higher than that in simple Rp cases (p < 0.05). Low-field MR fluoroscopy was useful in determining the occlusion level while asleep in patients with SAS because of its quiet gantry and long-term monitoring capability. The MR fluoroscopy technique should prove to be a valuable clinical tool for the diagnosis and for determining the appropriate therapy in patients with SAS.

journal_name

Eur Radiol

journal_title

European radiology

authors

Yoshida K,Fukatsu H,Ando Y,Ishigaki T,Okada T

doi

10.1007/s003300050816

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

1197-202

issue

6

eissn

0938-7994

issn

1432-1084

pii

90091197.330

journal_volume

9

pub_type

杂志文章

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