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논문 기본 정보

자료유형
학술저널
저자정보
김영월 (충남대학교 의과대학 진단방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제37권 제2호
발행연도
1997.1
수록면
279 - 284 (6page)

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Purpose: The purpose of this study was to evaluate enhancement patterns, as seen on two-phase spiral CT, of hepatic hemangiomas in which atypical features had been seen on sonography(US)Materials and Methods: Two-phase spiral CT scanning was performed in 18 patients in whom 24 atypical hemangiomas had been seen on US. Two-phase images were obtained at 25-45 seconds (arterial dominant phase) and 2-5 minutes(equilibrium phase) after the initiation of a bolus injection of contrast material(150ml, 5ml/sec). Enhancement patterns of hemangiomas during each phase were classified as homogeneous high, peripheral high, or low attenuation, and were retrospectively analyzed.Results: In the arterial dominant phase of spiral CT, low attenuation was seen in nine hemangiomas(38%), globular or spotty peripheral high attenuation in 14(58%), and homogeneous high attenuation in one(4%). In the equilibrium phase, enhancement patterns were peripheral high attenuation(partial fill-in) in 18 lesions (75%), and homogeneous high attenuation(complete fill-in) in three(12.5%), In the other three(12.5%) enhancement showed no significant change; in one of these, density was slightly less than in the arterial phase, and two showed subtle peripheral high attenuation. Fourteen hemangiomas (58%) showed globular or spotty peripheral high attenuation in the arterial dominant phase and peripheral or homogeneous high attenuation with progressive centripetal enhancement in the equilibrium phase.Conclusion: Our results suggest that two-phase spiral CT during the arterial dominant and equilibrium phase is useful in differentiating hepatic hemangiomas with atypical features seen on US from malignant hepatic tumors.

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