MRI evaluation of vocal fold paralysis before and after type I thyroplasty.
Magnetic resonance imaging (MRI) is a useful modality for three-dimensional evaluation of laryngeal anatomy. The authors present data on patients with unilateral vocal fold paralysis both before and after type I thyroplasty for medialization. Videoendoscopic and acoustic measures were obtained. MRI was performed preoperatively and postoperatively. Three-dimensional descriptive parameters were established to assess implant location. As well, vocal and endoscopic assessment were used to determine a successful result. Magnetic resonance images of two patients with satisfactory results were compared with images and vocal analysis of two dissatisfied patients. Use of MRI after type I thyroplasty provides additional information about implant location that can help determine the cause of poor results.
Bryant
N J
NJ
Section of Otolaryngology, Yale University School of Medicine, New Haven, Conn., USA.
Gracco
L C
LC
Sasaki
C T
CT
Vining
E
E
D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D019736:Prostheses and Implants; D016896:Treatment Outcome; D014826:Vocal Cord Paralysis / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D014827:Vocal Cords / Q000473:pathology*