小脳橋角部腫よう症例のＯｐｔｏｋｉｎｅｔｉｃ　Ｐａｔｔｅｒｎ（ＯＫＰ）　眼振のコンピューター解析による評価

DOI

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タイトル別名
  • Optokinetic Patterns in Patients with Cerebello-pontine Angle Tumors. Evaluation of Nystagmus by Computer Analysis.
  • Evaluation of Nystagmus by Computer Analysis
  • 眼振のコンピューター解析による評価

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説明

Optokinetic nystagmus elicited by the optokinetic pattern test (OKP test) in 16 patients with unilateral (13 patients) and bilateral (3 patients) cerebellopontine angle tumors, including acoustic tumors, were analyzed with a computer. The patients were classified into two groups by the greatest diameter of tumor on CT and/or MRICT namely, small (2.0 cm or less) and medium (2.1 to 4.0 cm). The parameters used for ana ysis were total number of nystagmus movements (NYS), total amplitude of the slow phase of nystagmus (AMP), total velocity of the slow phase of nystagmus (S-VEL), and mean velocity of the fast phase of nystagmus (F-VEL). NYS, AMP, and S-VEL values were almost normal or borderline in those with small tumors, but were significantly abnormal in those with medium-sized tumors except in one patient with an epidermoid tumor. AMP and S-VEL had a higher reliability than NYS in predicting the size of the tumors. The value of each parameter (NYS, AMP, S-VEL) on the side of the tumor was not always less than that on the healthy side. On the other hand, F-VEL values did not show any significant abnormalities except in the patient with the largest tumor. There was slight laterality in the F-VEL values. We conclude that this method is useful in predicting the size of cerebello-pontine angle tumors.

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詳細情報 詳細情報について

  • CRID
    1390001204945239808
  • NII論文ID
    130000854854
  • DOI
    10.3757/jser.50.358
  • ISSN
    1882577X
    03855716
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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