On the Physiology of Normal Swallowing as Revealed by Magnetic Resonance Imaging in Real Time

Table 2

Detectability of swallowing events by real-time MRI and FEES.

Deglutition events		Real-time MRI			FEES
		Sagittal	Coronal	Axial	Axial
Laryngeal ascent (LAT)	Start	100%	80%	0%	89%
	End	100%	67%	0%
Velo-pharyngeal closure (VCT)	Start	100%	93%	5%	100%
	End	100%	93%	5%	100%
Oro-velar opening (OOT)	Start	100%	53%	0%	33%
	End	100%	7%	0%
Pharyngeal transit (PTT)	Start	100%	93%	0%
	End	100%	20%	0%
Glottal closure (GCT)	Start	0%	87%	86%
	End	0%	87%	86%	22%
Vallecular and piriform sinus filling (SFT)	Start	11%	67%	95%
	End	0%	33%	95%
Epiglottic retroflexion (ERT)	Start	100%	0%	5%
	End	100%	0%	0%	89%
Pharyngeal constriction (PCT)	Start	100%	80%	5%
	End	100%	80%	5%
Esophageal opening (EOT)	Start	95%	33%	68%
	End	95%	13%	68%
Laryngeal descent (LDT)	Start	100%	47%	0%
	End	100%	53%	0%	11%

Bold font: highest visibility rate.
Bold italic font: second highest visibility rate.