메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
최수정 (울산대학교 의과대학 아산재단 서울중앙병원 진단방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제39권 제1호
발행연도
1998.1
수록면
21 - 27 (7page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Purpose : The purpose of this study was to compare the clinical utility of diffusion-weighted images(DWI) with that of apparent diffusion coefficient(ADC) maps for detecting early ishemic strokes. Materials and Methods : In 22 patients with infarct, lesion conspicuity as seen on T2-weighted images(T2WI), low diffusion-weighted images(DWI ; b value 300 sec/$\textrm{mm}^2$), high DWI(b value 1000 sec/$\textrm{mm}^2$), and ADC maps was retrospectively compared. The infarct was hyperacute (< 6 hours) in six, acute (< 48 hours) in six, and subacute (< 2 weeks) in ten. All images were obtained using an echo-planar spin echo sequence; lesion conspicuity was graded from 0 to 2 by two radiologists. Signal intensity was analysed in 17 patients[hyperacute (n=5); acute (n=4); and subacute (n=8)].Lesion-to-controlateral normal side signal intensity ratio(SIR) and contrast-to-noise ratio(CNR) were measured and compared between four different types of images. Results : With regard to lesion conspicuity, high DWI was superior to the other images for detecting hyperacute strokes(Grade 2, 6/6). In such cases, an ADC map showed grade 0 lesion conspicuity in one case, grade 1 in three, and grade 2 in two. There was no significant difference in lesion conspicuity in acute and subacute strokes between DWI(low & high) and T2WI(Grade 2, 16 in each). An ADC map in acute and subacute stroke showed Grade 1 in four cases and Grade 2 in 12. Signal intensity analysis of SIR and CNR showed that high DWI was also superior to the other images for detecting hyperacute ischemic strokes(p <0.05, n=5), and superior to an ADC map in acute and subacute stroke(p < 0.05, n=12). Conclusion :Diffusion-weighted images with a high b value could be more useful than ADC maps and conventional T2-weighted images, especially for the detection of hyperacute strokes.

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0