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
저널정보
대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제19권 제2호
발행연도
2015.1
수록면
76 - 87 (12page)

이용수

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

초록· 키워드

오류제보하기
Purpose: There is an ongoing search for a stent material that produces a reducedsusceptibility artifact. This study evaluated the effect of manganese (Mn) content onthe MRI susceptibility artifact of ferrous-manganese (Fe-Mn) alloys, and investigatedthe correlation between MRI findings and measurements of Fe-Mn microstructure onX-ray diffraction (XRD). Materials and Methods: Fe-Mn binary alloys were prepared with Mn contentsvarying from 10% to 35% by weight (i.e., 10%, 15%, 20%, 25%, 30%, and 35%;designated as Fe-10Mn, Fe-15Mn, Fe-20Mn, Fe-25Mn, Fe-30Mn, and Fe-35Mn,respectively), and their microstructure was evaluated using XRD. Three-dimensionalspoiled gradient echo sequences of cylindrical specimens were obtained in paralleland perpendicular to the static magnetic field (B0). In addition, T1-weighted spinecho, T2-weighted fast spin echo, and T2*-weighted gradient echo images wereobtained. The size of the low-intensity area on MRI was measured for each of the Fe-Mn binary alloys prepared. Results: Three phases of α’-martensite, γ-austenite, and ε-martensite were seenon XRD, and their composition changed from α’-martensite to γ-austenite and/or ε-martensite, with increasing Mn content. The Fe-10Mn and Fe-15Mn specimenscomprised α’-martensite, the Fe-20Mn and Fe-25Mn specimens comprised γ+εphases, and the Fe-30Mn and Fe-35Mn specimens exhibited a single γ phase. The sizeof the low-intensity areas of Fe-Mn on MRI decreased relative to its microstructureon XRD with increasing Mn content. Conclusion: Based on these findings, proper conditioning of the Mn content in Fe-Mn alloys will improve its visibility on MR angiography, and a Mn content of morethan 25% is recommended to reduce the magnetic susceptibility artifacts on MRI. A reduced artifact of Fe-Mn alloys on MRI is closely related to the paramagnetic constitution of γ-austenite and/or ε-martensite.

목차

등록된 정보가 없습니다.

참고문헌 (29)

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