Assessment of glycosaminoglycan concentration changes in the intervertebral disc via chemical exchange saturation transfer.
Assessment of glycosaminoglycan concentration changes in the intervertebral disc via chemical exchange saturation transfer.
复制标题
通过化学交换饱和转移评估椎间盘糖胺聚糖浓度的变化。
DOI:
10.1002/nbm.1741
复制
发表时间:
2012-02
影响因子:
2.9
通讯作者:
Jerschow, Alexej
中科院分区:
文献类型:
--
作者:
Saar, Galit;Zhang, Boyang;Ling, Wen;Regatte, Ravinder R.;Navon, Gil;Jerschow, Alexej
关键词:
It is shown in the present work that the CEST method for hydroxyl protons can be used to detect changes in glycosaminoglycan (GAG) concentrations in the intervertebral disc. The method, termed gagCEST, was demonstrated ex vivo by correlating the CEST effect with the fixed charge density (FCD) of the nucleus pulposus (NP), as well as, correlating tissue CEST images with their corresponding 23Na images. Incubation of the five NP samples with trypsin produced samples with varying GAG content (N=19), and a good correlation was found between the −OH CEST effect and FCD as well as with the N-acetyl signal amplitude. GagCEST images in vitro further illustrate the amount of detail obtainable from this contrast mechanism when compared to conventional imaging. The large concentration of GAG and the relatively long T1 of water in the NP, make the method sensitive, in particular, for assessing the GAG depletion in this tissue. It is the loss of GAG in the NP that indicates the early stage of disc degeneration.
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DOI:
10.1016/j.jacr.2007.08.014
发表时间:
2008-01-01
期刊:
Journal of the American College of Radiology : JACR
影响因子:
--
作者:
Kuo, Phillip H
通讯作者:
Kuo, Phillip H
影响因子:
2.8
作者:
LESPERANCE, LM;GRAY, ML;BURSTEIN, D
通讯作者:
BURSTEIN, D
影响因子:
3.2
作者:
Ling, W;Jerschow, A
通讯作者:
Jerschow, A
影响因子:
15
作者:
Eliav, U;Navon, G
通讯作者:
Navon, G
影响因子:
3.3
作者:
Duvvuri, U;Reddy, R;Leigh, JS
通讯作者:
Leigh, JS