Radiation-induced carotid arterial stenosis diagnosed by using transoral carotid ultrasonography

崇, 七田; 利安, 緒方; 正弘, 矢坂; 健, 卯田; 亨, 井上; 雪郎, 井林; 三雄, 飯田; 靖, 岡田

doi:10.3995/jstroke.30.500

Jpn. J. Stroke

2008

DOI: 10.3995/jstroke.30.500

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Radiation-induced carotid arterial stenosis diagnosed by using transoral carotid ultrasonography

七田崇¹,

緒方利安²,

矢坂正弘³

et al.

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2011

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Evaluation of radiation-induced carotid arterial stenosis with carotid ultrasonography in 11 patients

Taguchi¹,

Takashima²,

Kobayashi³

et al. 2011

Jpn. J. Stroke

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Background and Purpose: Carotid stenosis is known to occur after neck radiotherapy. However, there are few reports of radiation-induced carotid artery lesions in patients with neck cancers in Japan. This study aimed to clarify the ultrasonographic characteristics of radiation-induced carotid artery lesions. Methods: We evaluated 11 patients after neck radiotherapy for pharyngeal or laryngeal cancer. The mean time from radiotherapy to carotid ultrasound sonography was 55.6 months (range: 3-156 months). The carotid artery diameter, maximum intima medial thickness (max-IMT), peak systolic velocity (PSV), and distribution and properties of plaques were measured using carotid ultrasound sonography. Results: All patients had increased IMT of the bilateral carotid artery. There was a linear correlation between the max-IMT and the duration of the post-radiation therapy interval. Four of the 11 patients (36%) developed carotid stenosis greater than 50% on the bilateral carotid artery, and their plaques were all unstable. Two patients developed cerebral infarctions at a mean of 12.3 years following radiotherapy. Conclusion: Radiation-induced carotid artery lesions have a wide range of clinical courses in the bilateral carotid artery. Periodic carotid ultrasonography examinations are necessary to detect radiation-induced carotid artery lesions.

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Evaluation of radiation-induced carotid arterial stenosis with carotid ultrasonography in 11 patients

Taguchi¹,

Takashima²,

Kobayashi³

et al. 2011

Jpn. J. Stroke

View full text Add to dashboard Cite

show abstract

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Radiation-induced carotid arterial stenosis diagnosed by using transoral carotid ultrasonography

Cited by 1 publication

References 12 publications

Evaluation of radiation-induced carotid arterial stenosis with carotid ultrasonography in 11 patients

Evaluation of radiation-induced carotid arterial stenosis with carotid ultrasonography in 11 patients

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