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Radiation-induced dysphagia in head and neck cancer patients: MRI-based study

Research Project

Project/Area Number 24791332
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionSaitama Medical University

Principal Investigator

SAITO Naoko  埼玉医科大学, 医学部, 講師 (60366341)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords頭頸部癌 / 放射線治療 / 嚥下障害 / MRI / 咽頭収縮筋 / MRI
Research Abstract

Radiation therapy (RT) for head and neck cancer is known to induce dysphasia and cause morphologic changes in the muscles of swallowing. This study investigated the changes in the width and signal intensity ratio (SIR) of the pharyngeal constrictor muscles (PCM), SIR of the parapharyngeal space, and the width of the retropharyngeal space detectable by MRI after RT for nasopharyngeal cancer patients. Twenty-two patients receiving RT for nasopharyngeal cancer between April 2007 and March 2014 were enrolled in this study.
The patients receiving RT had significant increased thickness, decreased T1-SIR, and increased T2-SIR in PCMs. T1- and T2-SIRs in the parapharyngeal space decreased significantly. And increased width of the retropharyngeal space was noted. The changes in the width and SIR of the PCM, SIR of the parapharyngeal space, and the width of the retropharyngeal space did not differ between Grade 2 and Grade 3 in both early and late dysphagia.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (5 results)

All 2013 2012 Other

All Presentation (5 results)

  • [Presentation] 上咽頭癌放射線治療後の咽頭収縮筋の変化と嚥下障害の検討2013

    • Author(s)
      齋藤尚子
    • Organizer
      第26回 頭頸部放射線研究会
    • Place of Presentation
      名古屋国際会議場 名古屋
    • Year and Date
      2013-10-13
    • Related Report
      2013 Final Research Report
  • [Presentation] Pictorial Review of Dysphagia in Head and Neck2013

    • Author(s)
      Naoko Saito
    • Organizer
      99th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA 2013)
    • Place of Presentation
      Chicago, IL, USA
    • Related Report
      2013 Annual Research Report 2013 Final Research Report
  • [Presentation] Secondary Signs of Head and Neck Cancer : Key Imaging Findings in Diagnosing and Identifying Lesions2012

    • Author(s)
      Naoko Saito
    • Organizer
      46th annual meeting American Society of Head and Neck Radiology
    • Place of Presentation
      Miami, FL, USA
    • Related Report
      2013 Final Research Report
  • [Presentation] Secondary Signs of Head and Neck Cancer: Key Imaging Findings in Diagnosing and Identifying Lesions2012

    • Author(s)
      Naoko Saito
    • Organizer
      46th annual meeting American Society of Head and Neck Radiology
    • Place of Presentation
      Miami, FL, USA
    • Related Report
      2012 Research-status Report
  • [Presentation] 上咽頭癌放射線治療後の咽頭収縮筋の変化と嚥下障害の検討

    • Author(s)
      齋藤尚子
    • Organizer
      第26回 頭頸部放射線研究会
    • Place of Presentation
      名古屋
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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