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Table 2 Vocal assessments performed preoperatively and 12 months after injection of adipose-derived stromal vascular fraction

From: Autologous adipose-derived stromal vascular fraction and scarred vocal folds: first clinical case report

   Preoperative vocal assessment 12-month vocal assessment
Self-assessment VHI 30 (/ 120) 75 9
Perceptual analysis GRB of the Hirano scale G2R2B0 G1R1B0
Acoustic analysis Fundamental frequency (Hz) 180 203
Vocal range (Hz) 381 921
Jitter (%) 4.6 0.2
Signal to noise ratio (dB) 9.5 17.7
Aerodynamic analysis MPT (s) 13.2 7.8
Oral air flow (cm3/s) 203 198
ESP at the phonatory threshold (hPa) 7.9 7.3
  1. VHI Voice Handicap Index, MPT maximum phonation time, ESP estimated subglottic pressure