期刊文献+

MRI Characteristics and Transverse Relaxation Time Measurements in Normal Growing Cartilage

MRI Characteristics and Transverse Relaxation Time Measurements in Normal Growing Cartilage
下载PDF
导出
摘要 To determine the characteristics of magnetic resonance (MR) signals of normal growing cartilage and identify the difference in transverse relaxation times between physeal and epiphyseal cartilage in vivo. 24 distal femora of 12 two-week-old piglets were imaged on a 1.5 Tesla GE MR scanner. Comparison was made between signal intensity on MR images and the structure shown in corresponding histologic sections. T 2 values were measured in eight piglets by means of multiecho spin-echo sequences. Our results showed that MR imaging delineated five regions between the secondary ossification center and the metaphysis, which histologically correspond to the zone of provisional calcification of the secondary ossification center, physis of the secondary ossification center, epiphyseal cartilage, physis and zone of provisional calcification. The T 2 value in the physeal cartilage was much larger than that in the epiphyseal cartilage (P<0.05). It is concluded that MRI findings could differentiate the different regions of growing cartilage. T 2 is longer in physeal than in epiphyseal cartilage, perhaps reflecting differences in water binding by proteoglycans. To determine the characteristics of magnetic resonance (MR) signals of normal growing cartilage and identify the difference in transverse relaxation times between physeal and epiphyseal cartilage in vivo. 24 distal femora of 12 two-week-old piglets were imaged on a 1.5 Tesla GE MR scanner. Comparison was made between signal intensity on MR images and the structure shown in corresponding histologic sections. T 2 values were measured in eight piglets by means of multiecho spin-echo sequences. Our results showed that MR imaging delineated five regions between the secondary ossification center and the metaphysis, which histologically correspond to the zone of provisional calcification of the secondary ossification center, physis of the secondary ossification center, epiphyseal cartilage, physis and zone of provisional calcification. The T 2 value in the physeal cartilage was much larger than that in the epiphyseal cartilage (P<0.05). It is concluded that MRI findings could differentiate the different regions of growing cartilage. T 2 is longer in physeal than in epiphyseal cartilage, perhaps reflecting differences in water binding by proteoglycans.
出处 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2004年第4期411-413,共3页 华中科技大学学报(医学英德文版)
基金 ThisprojectissupportedbyagrantfromtheNationalNaturalScienceFoundationofChina (No .30 370 4 30 )
关键词 magnetic resonance CARTILAGE growth and development magnetic resonance cartilage growth and development
  • 相关文献

参考文献9

  • 1Shapiro F.Epiphyseal disorders[].The New England Journal of Medicine.1987
  • 2Jaramillo D,Connolly S,Mulkern R,Shapiro F.Developing Epiphysis: MR Imaging Characteristics and Histologic Correlation in the Newborn Lamb[].Radiology.1998
  • 3Mulkern R V,Wong S T S,Jakab P et al.CPMG imaging sequences for high field in vivo transverse relaxation studies[].Magnetic Resonance in Medicine.1990
  • 4Chung T,Jaramillo D.Normal maturing distal tibia and fibula: changes with age at MR imaging[].Radiology.1995
  • 5Jaramillo D,Laor T,Mulkern R V.Comparison between fast spin-echo and conventional spin-echo imaging of normal and abnormal musculoskeletal structures in children and young adults[].Investigative Radiology.1994
  • 6Babyn,P,Kim,H,Lemaire,C.High-resolution magnetic resonance imaging of normal porcine cartilaginous epiphyseal maturation[].Journal of Magnetic Resonance Imaging.1996
  • 7Pradip,PK,Jasani,MK,Sebok,D.Variation in MR signal intensity across normal human knee cartilage[].Journal of Magnetic Resonance Imaging.1993
  • 8Dardzinski B,Mosher T,Li S et al.Spatial variation of T2 in human articular cartilage[].Radiology.2002
  • 9Dardzinski B,Laor T,Schmithorst V et al.Mapping T2 relaxation time in the pediatric knee: Feasibility with a clinical 1. 5-tTMR imaging system[].Radiology.2002

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部