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Stem bij patiënten met neurofibromatose type 1

Marjan Cosyns (UGent) , Geert Mortier (UGent) , Sandra Janssens (UGent) , Paul Corthals (UGent) and John Van Borsel (UGent)
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Abstract
Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous disorder characterized by multiple café-au-lait spots and neurofibromas. Voice abnormalities have been reported in patients with NF1, but previous studies generally relied on perceptual voice evaluations. Therefore, the present study aimed to delineate voice in NF1 patients by means of objective measurements. Participants were 30 NF1 patients and 30 controls, frequencymatched to the patient group by gender, age, smoking behaviour, and vocal usage. Voice assessment comprised aerodynamic measurements, phonetography, acoustic analyses, determination of the Dysphonia Severity Index, and completion of the Voice Handicap Index. It was found that NF1 patients showed a reduced vital capacity and frequency range. Also, the extent of their pitch variation was smaller compared to controls. It is not clear whether these findings can be considered ‘voice problems’ as such because of a possible flow-over from psycho-physical aspects pertaining to the disease.

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Chicago
Cosyns, Marjan, Geert Mortier, Sandra Janssens, Paul Corthals, and John Van Borsel. 2013. “Stem Bij Patiënten Met Neurofibromatose Type 1.” Stem- Spraak- En Taalpathologie 18 (1): 38–48.
APA
Cosyns, Marjan, Mortier, G., Janssens, S., Corthals, P., & Van Borsel, J. (2013). Stem bij patiënten met neurofibromatose type 1. STEM- SPRAAK- EN TAALPATHOLOGIE, 18(1), 38–48.
Vancouver
1.
Cosyns M, Mortier G, Janssens S, Corthals P, Van Borsel J. Stem bij patiënten met neurofibromatose type 1. STEM- SPRAAK- EN TAALPATHOLOGIE. 2013;18(1):38–48.
MLA
Cosyns, Marjan, Geert Mortier, Sandra Janssens, et al. “Stem Bij Patiënten Met Neurofibromatose Type 1.” STEM- SPRAAK- EN TAALPATHOLOGIE 18.1 (2013): 38–48. Print.
@article{4410695,
  abstract     = {Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous disorder characterized by multiple caf{\'e}-au-lait spots and neurofibromas. Voice abnormalities have been reported in patients with NF1, but previous studies generally relied on perceptual voice evaluations. Therefore, the present study aimed to delineate voice in NF1 patients by means of objective measurements. Participants were 30 NF1 patients and 30 controls, frequencymatched to the patient group by gender, age, smoking behaviour, and vocal usage. Voice assessment comprised aerodynamic measurements, phonetography, acoustic analyses, determination of the Dysphonia Severity Index, and completion of the Voice Handicap Index. It was found that NF1 patients showed a reduced vital capacity and frequency range. Also, the extent of their pitch variation was smaller compared to controls. It is not clear whether these findings can be considered {\textquoteleft}voice problems{\textquoteright} as such because of a possible flow-over from psycho-physical aspects pertaining to the disease.},
  author       = {Cosyns, Marjan and Mortier, Geert and Janssens, Sandra and Corthals, Paul and Van Borsel, John},
  issn         = {0924-7025},
  journal      = {STEM- SPRAAK- EN TAALPATHOLOGIE},
  language     = {dut},
  number       = {1},
  pages        = {38--48},
  title        = {Stem bij pati{\"e}nten met neurofibromatose type 1},
  volume       = {18},
  year         = {2013},
}