Characterization of 1H NMR signal in human cortical bone for magnetic resonance imaging.

Characterization of 1H NMR signal in human cortical bone for magnetic resonance imaging.
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DOI:
10.1002/mrm.22459
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发表时间:
2010-09
影响因子:
3.3
通讯作者:
Does, Mark D.
Does, Mark D.
中科院分区:
医学3区
文献类型:
--
作者:
Horch, R. Adam;Nyman, Jeffry S.;Gochberg, Daniel F.;Dortch, Richard D.;Does, Mark D.

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磁共振成像(MRI)的最新进展已使人类皮质骨(HCB)的临床成像成为可能,为评估骨健康提供了一种潜在的强大的新手段,其分子级灵敏度是传统X射线诊断无法获得的。在HCB中,MRI对在水和蛋白质源之间分配的质子(1H)群体敏感,这可以根据固有的核磁共振(NMR)特性(例如化学位移和横向和纵向弛豫速率)来区分。在此,这些NMR性能进行了评估,在六氯苯捐助者从一个广泛的年龄范围内,和四个不同的1H人口一致确定,并归因于五个微观解剖来源。这些发现表明,现代HCB MRI对比度将由胶原结合水主导,其也可以用于通过磁化转移研究HCB胶原。
Recent advancements in magnetic resonance imaging (MRI) have enabled clinical imaging of human cortical bone (HCB), providing a potentially powerful new means for assessing bone health with molecular-scale sensitivities unavailable to conventional X-ray-based diagnostics. In HCB, MRI is sensitive to populations of protons (1H) partitioned among water and protein sources, which may be differentiated according to intrinsic nuclear magnetic resonance (NMR) properties such as chemical shift and transverse and longitudinal relaxation rates. Herein, these NMR properties were assessed in HCB donors from a broad age range, and four distinct 1H populations were consistently identified and attributed to five microanatomical sources. These findings show that modern HCB MRI contrast will be dominated by collagen-bound water, which can also be exploited to study HCB collagen via magnetization transfer.
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