지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제17권 제4호
- 발행연도
- 2013.1
- 수록면
- 267 - 274 (8page)
이용수
초록· 키워드
오류제보하기
Purpose : To re-evaluate additional clinical significance of the apparent diffusion coefficient (ADC) map in the inference of infarction stage, authors studied the evolution patterns of the DWI and the ADC map of the brain infarction.
Materials and Methods: In 127 patients with cerebral infarctions, including follow-up checks, 199 studies were performed.
They were classified as hourly (117 studies)-, daily (108 studies)-, weekly (62 studies)-based groups. The signal intensity (SI) was measured at the core of the infarction and contralateral area with ROI of 0.3 cm2 or more on the images of the DWI and the ADC map, and calculated the ratios of SI and ADC value of the infarction area / contralateral normal area, and compared the patterns of the change according to the evolution.
Results: Infarction was detected as early as 1 hour after the attack, and the ratio of SI in the DWI became over than 2after 12 hours, which showed a plateau until the 6th day. Thereafter, it decreased slowly to 1 on the 30th day, and changed to lower SI than the surrounding brain. The ratio in the ADC map became 0.46 in 24 hours after the attack, and increased slowly to 1 in the 15th day. Thereafter, it became a higher value than the surrounding brain. Overall, the ratio in the ADC map changed earlier than in the DWI, and the ratio curves showed inverse pattern each other according to the evolution of the infarction.
Conclusion: The evolution patterns of infarction on the ADC map showed an inverse curve of DWI curve, which means that the ADC value is accurately predictable from DWI, and the ADC map joined with the DWI seems helpful in the determination of subacute infarction between 15 to 30 days.
목차
등록된 정보가 없습니다.
참고문헌 (13)
참고문헌 신청
Barajas RF / 2010 / Diffusion-weighted MR imaging derived apparent diffusion coefficient is predictive of clinical outcome in primary central nervous system lymphoma / AJNR A
Bratane BT / 2009 / Ischemic lesion volume determination on diffusion weighted images vs. apparent diffusion coefficient maps / Brain Research 1279 : 182 ~ 188
Burdette JH / 1998 / Cerebral infarction: time course of signal intensity changes on diffusion-weighted MR images / AJR Am J Roentgenol 171 : 791 ~ 795
Copen WA / 2001 / Ischemic stroke: effects of etiology and patient age on the time course of the core apparent diffusion coefficient / Neuroradiology 221 : 27 ~ 34
Desmond PM / 2001 / The value of apparent diffusion coefficient maps in early cerebral ischemia / AJNR Am J Neuroradiol 22 : 1260 ~ 1267
Bratane BT / 2009 / Ischemic lesion volume determination on diffusion weighted images vs. apparent diffusion coefficient maps / Brain Research 1279 : 182 ~ 188
Burdette JH / 1998 / Cerebral infarction: time course of signal intensity changes on diffusion-weighted MR images / AJR Am J Roentgenol 171 : 791 ~ 795
Copen WA / 2001 / Ischemic stroke: effects of etiology and patient age on the time course of the core apparent diffusion coefficient / Neuroradiology 221 : 27 ~ 34
Desmond PM / 2001 / The value of apparent diffusion coefficient maps in early cerebral ischemia / AJNR Am J Neuroradiol 22 : 1260 ~ 1267
이 논문의 저자 정보
최근 본 자료
댓글(0)
0