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MRI- and CT-determined changes of dysphagia / aspiration-related structures (DARS) during and after radiotherapy.
Pigorsch, Steffi U; May, Chaline; Kessel, Kerstin A; Graf, Simone; Bier, Henning; Nüsslin, Fridtjof; Waschulzik, Birgit; Combs, Stephanie E.
Afiliação
  • Pigorsch SU; Department of Radiation Oncology, Technical University of Munich (TUM), Munich, Germany.
  • May C; Department of Radiation Oncology, Technical University of Munich (TUM), Munich, Germany.
  • Kessel KA; Department of Radiation Oncology, Technical University of Munich (TUM), Munich, Germany.
  • Graf S; Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, Neuherberg, Germany.
  • Bier H; Department of Otorhinolaryngology, Technical University of Munich (TUM), Munich, Germany.
  • Nüsslin F; Department of Otorhinolaryngology, Technical University of Munich (TUM), Munich, Germany.
  • Waschulzik B; Department of Radiation Oncology, Technical University of Munich (TUM), Munich, Germany.
  • Combs SE; Institute of Medical Informatics, Statistics and Epidemiology, Technical University of Munich (TUM), Munich, Germany.
PLoS One ; 15(9): e0237501, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32877418
ABSTRACT

PURPOSE:

The concept of dysphagia/aspiration-related structures (DARS) was developed against the background of severe late side effects of radiotherapy (RT) for head and neck cancer (HNC). DARS can be delineated on CT scans, but with a better morphological discrimination on magnetic resonance imaging (MRI). Swallowing function was analyzed by use of patient charts and prospective investigations and questionnaires.

METHOD:

Seventeen HNC patients treated with intensity-modulated radiotherapy (IMRT) ± chemotherapy between 5/2012 - 8/2015 were included. Planning CT (computed tomography) scans and MRIs (magnetic resonance imaging) prior, during 40 Gray (Gy) radiotherapy and posttreatment were available and co-registered to delineate DARS. The RT dose of each DARS was calculated. Five patients were investigated posttreatment for swallowing function and assessed by means of various questionnaires for quality of life (QoL), swallowing, and voice function.

RESULTS:

By retrospective comparison of DARS volume, a significant change in four of eight DARS was detected over time. Three increased and one diminished. The risk of posttreatment dysphagia rose by every 1Gy above the mean dose (D mean) of RT to DARS. 7.5 was the risk factor for dysphagia in the first 6 months, reducing to 4.7 for months 6-12 posttreatment. For all five patients of the prospective part of swallowing investigations, a function disturbance was detected. These results were in contrast to the self-assessment of patients by questionnaires. There was neither a dose dependency of D mean DARS volume changes over time nor of dysphonia and no correlation between volume changes, dysphagia or dysphonia.

CONCLUSION:

Delineation of DARS on MRI co-registered to planning CT gave the opportunity to differentiate morphology better than by CT alone. Due to the small number of patients with complete MRI scans over time, we failed to detect a dose dependency of DARS and swallowing and voice disorder posttreatment.
Assuntos
Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Sucção / Imagem por Ressonância Magnética / Transtornos de Deglutição / Tomografia Computadorizada por Raios X Tipo de estudo: Estudo observacional / Patient_preference / Estudo prognóstico / Fatores de risco Aspecto: Preferência do paciente Limite: Adulto / Idoso / Feminino / Humanos / Masculino / Meia-Idade / Jovem adulto Idioma: Inglês Revista: PLoS One Assunto da revista: Ciência / Medicina Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Alemanha

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Sucção / Imagem por Ressonância Magnética / Transtornos de Deglutição / Tomografia Computadorizada por Raios X Tipo de estudo: Estudo observacional / Patient_preference / Estudo prognóstico / Fatores de risco Aspecto: Preferência do paciente Limite: Adulto / Idoso / Feminino / Humanos / Masculino / Meia-Idade / Jovem adulto Idioma: Inglês Revista: PLoS One Assunto da revista: Ciência / Medicina Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Alemanha