Wu Z, Yang B, Pan S, Chen Z
Department of Radiology, 2nd Affiliated Hospital, China Medical University, Shenyang 110003, China.
Chin Med J (Engl). 1999 Jul;112(7):646-8.
To establish the normal patterns of lumbar vertebral marrow in normal Chinese, to determine its normal value of relaxation times (T1 and T2), and to investigate the relationship between relaxation time and age or sex.
320 of 1000 cases (sampled randomly) received MR imaging. According to the MRI findings of sagittal T1WI, marrow patterns were established. 268 cases were studied quantitatively (T1 and T2 measurements).
The normal bone marrow patterns of lumbar vertebra were divided into four main patterns (six subgroups). The normal values of relaxation times (T1 and T2) were measured. T1 or T2 value decreased with aging. No significant difference in T1 value between two sexes (< 40 years old: u = 0.4307, P > 0.50; > or = 40 years old: u = 0.554, P > 0.05). No significant difference was seen in T2 value between two sexes before 40 years old (u = 1.3628, P > 0.10), but significant difference after 40 years old (u = 2.1498, P < 0.05).
To establish the normal patterns of lumbar vertebral marrow and determine its normal values of relaxation times have important clinical value in the diagnosis of bone marrow diseases.
建立正常中国人腰椎骨髓的正常模式，确定其弛豫时间（T1和T2）的正常值，并研究弛豫时间与年龄或性别的关系。
1000例中随机抽取320例接受磁共振成像检查。根据矢状位T1WI的MRI表现建立骨髓模式。对268例进行定量研究（测量T1和T2）。
腰椎正常骨髓模式分为四种主要模式（六个亚组）。测量了弛豫时间（T1和T2）的正常值。T1或T2值随年龄增长而降低。两性之间T1值无显著差异（<40岁：u = 0.4307，P>0.50；≥40岁：u = 0.554，P>0.05）。40岁之前两性之间T2值无显著差异（u = 1.3628，P>0.10），但40岁之后有显著差异（u = 2.1498，P<0.05）。
建立腰椎骨髓的正常模式并确定其弛豫时间的正常值对骨髓疾病的诊断具有重要的临床价值。
