Lazzarini K M, Troiano R N, Smith R C
Department of Diagnostic Imaging, Yale University School of Medicine, New Haven, CT 06510, USA.
Radiology. 1997 Feb;202(2):540-2. doi: 10.1148/radiology.202.2.9015087.
To determine if runners have an increased prevalence of marrow edema in the foot and ankle compared with nonrunners at magnetic resonance (MR) imaging.
Ankles and feet were imaged in 20 runners and 12 nonrunners with a fast short inversion time inversion-recovery sequence at 1.5 T. Edema within each bone was graded from 0 (no edema) to 3 (severe edema). Total scores for each subject equaled the sum of the grades.
Reader 1 found edema in 16 of 20 runners and four of 12 nonrunners (P < .04); runners had a mean score of 4.7 and nonrunners had a mean score of 0.9 (P < .006). The average number of bones with edema was 3.4 for runners and 0.7 for nonrunners (P < .005). Reader 2 found edema in 16 of 20 runners and two of 12 nonrunners (P < .002); runners had a mean score of 4.5 and nonrunners had a mean score of 0.3 (P < .001). The average number of bones with edema was 3.6 for runners and 0.3 for nonrunners (P < .001).
When the fast short inversion time inversion-recovery sequence is performed, edema seen within the marrow of runners on MR images may be due to exercise alone.
通过磁共振成像（MR）确定跑步者与非跑步者相比，足踝部骨髓水肿的患病率是否更高。
对20名跑步者和12名非跑步者的足踝部进行1.5T快速短反转时间反转恢复序列成像。对每块骨内的水肿程度从0级（无水肿）到3级（严重水肿）进行分级。每个受试者的总分等于各分级分数之和。
阅片者1在20名跑步者中的16名以及12名非跑步者中的4名发现水肿（P <.04）；跑步者的平均分数为4.7，非跑步者的平均分数为0.9（P <.006）。有水肿的骨的平均数量，跑步者为3.4块，非跑步者为0.7块（P <.005）。阅片者2在20名跑步者中的16名以及12名非跑步者中的2名发现水肿（P <.002）；跑步者的平均分数为4.5，非跑步者的平均分数为0.3（P <.001）。有水肿的骨的平均数量，跑步者为3.6块，非跑步者为0.3块（P <.001）。
当采用快速短反转时间反转恢复序列成像时，MR图像上跑步者骨髓内所见的水肿可能仅由运动引起。
