Funke M, Bruhn H, Vosshenrich R, Rudolph O, Grabbe E
Abteilung Röntgendiagnostik I, Georg-August-Universität Göttingen.
Rofo. 1994 Jul;161(1):58-63. doi: 10.1055/s-2008-1032492.
Spongy bone produces local magnetic field inhomogeneities and leads to shortening of the transverse relaxation time from bone marrow. This increased signal decay affects the T2 relaxation time. Measurements of the T2* time from the 4th lumbar vertebra were carried out in 48 normals and 20 patients with osteoporosis. A special multigradient echo technique was used, the echo times selected in relation to phase coherence of the water and fat signals. T2* times showed slight increase in relation to age. Patients with osteoporosis showed significantly increased T2* times (19.9 +/- 3.8 ms) compared to the normal control group (13.4 +/- 1.9 ms). From these findings it is possible to judge the quality of the trabecular structure.
松质骨会产生局部磁场不均匀性，并导致骨髓横向弛豫时间缩短。这种信号衰减增加会影响T2弛豫时间。对48名正常人和20名骨质疏松症患者进行了第四腰椎T2时间的测量。使用了一种特殊的多梯度回波技术，根据水和脂肪信号的相位相干性选择回波时间。T2时间随年龄略有增加。与正常对照组（13.4±1.9毫秒）相比，骨质疏松症患者的T2*时间显著增加（19.9±3.8毫秒）。根据这些发现可以判断小梁结构的质量。
