Quantitative chemical exchange saturation transfer MRI of intervertebral disc in a porcine model.
Quantitative chemical exchange saturation transfer MRI of intervertebral disc in a porcine model.
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DOI:
10.1002/mrm.26457
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发表时间:
2016-12
影响因子:
3.3
通讯作者:
Li D
中科院分区:
文献类型:
--
作者:
Zhou Z;Bez M;Tawackoli W;Giaconi J;Sheyn D;de Mel S;Maya MM;Pressman BD;Gazit Z;Pelled G;Gazit D;Li D
Previous studies have associated low pH in interver-tebral discs (IVDs) with discogenic back pain. The purpose of this study was to determine whether quantitative CEST (qCEST) MRI can be used to detect pH changes in IVDs in vivo. The exchange rate ksw between glycosaminoglycan (GAG) protons and water protons was determined from qCEST analysis. Its dependence on pH value was investigated in GAG phantoms with varying pH and concentrations. The relationship between ksw and pH was studied further in vivo in a porcine model on a 3T MR scanner and validated using a pH meter. Sodium lactate was injected into the IVDs to induce various pH values within the discs ranging from 5 to 7. Phantom and animal results revealed that ksw measured using qCEST MRI is highly correlated with pH level. In the animal studies, the relationship can be described as ksw =9.2 × 106 × 10−pH + 196.9, R2 = 0.7883. The exchange rate between GAG and water protons determined from qCEST MRI is closely correlated with pH value. This technique has the potential to noninvasively measure pH in the IVDs of patients with discogenic pain.
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影响因子:
2.9
作者:
Saar, Galit;Zhang, Boyang;Ling, Wen;Regatte, Ravinder R.;Navon, Gil;Jerschow, Alexej
通讯作者:
Jerschow, Alexej
影响因子:
2.2
作者:
Ward, KM;Aletras, AH;Balaban, RS
通讯作者:
Balaban, RS
DOI:
10.3109/17453676908989482
发表时间:
1969-01-01
期刊:
ACTA ORTHOPAEDICA SCANDINAVICA
影响因子:
--
作者:
NACHEMSON, A
通讯作者:
NACHEMSON, A
DOI:
10.5114/aoms.2012.32401
发表时间:
2012-12-20
期刊:
Archives of medical science : AMS
影响因子:
--
作者:
Liang CZ;Li H;Tao YQ;Zhou XP;Yang ZR;Li FC;Chen QX
通讯作者:
Chen QX
影响因子:
5.9
作者:
Haneder, Stefan;Apprich, Sebastian R.;Trattnig, Siegfried
通讯作者:
Trattnig, Siegfried