Pulse Corticosteroid Therapy and Effect on Brain Water Diffusivity
In daily clinical use, pulse high dosis corticosteroids are used to treat cerebral edema in different pathological situations ( surgery, trauma, tumors...). Dehydration can theorically concern extra-cellular or intracellular water, or both.
The relative proportion of those two components are not known, as well their kinetics.
Diffusion Weighted Imaging ( DWI) is a none invasive and none toxic technique to study those phenomena.We can also study the diffusivity anisotropy not using a Gaussian distribution but rather a non- gaussian one, more close to the reality ( q Space Imaging ).
Finally, we can study the compartment redistribution between slow and rapid water molecules diffusion by bi-exponential decomposition of the diffusion signal, corresponding, theorically, respectively to the intra- and extra-cellular component.
Hypothesis : The high dosis steroid pulse therapy modifies or not the water free diffusion in DWI and qSI ? Is there a modification in the diffusivity of both rapid and slow component ?
研究概览
地位
条件
研究类型
联系人和位置
学习地点
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Brussels、比利时、1200
- 招聘中
- Clinique Universitaire St LUC
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Systemic Lupus Erythematosus
- normal neurological exam
- informed consent
- 18 yo or more
Exclusion Criteria:
- abnormal neurological exam
- younger than 18 years old
学习计划
研究是如何设计的?
设计细节
合作者和调查者
调查人员
- 研究主任:Thierry Duprez, MD、Université Catholique de Louvain
- 首席研究员:Denis Rommel, MD、Université Catholique de Louvain
出版物和有用的链接
一般刊物
- Bosma GP, Huizinga TW, Mooijaart SP, Van Buchem MA. Abnormal brain diffusivity in patients with neuropsychiatric systemic lupus erythematosus. AJNR Am J Neuroradiol. 2003 May;24(5):850-4.
- Moritani T, Shrier DA, Numaguchi Y, Takahashi C, Yano T, Nakai K, Zhong J, Wang HZ, Shibata DK, Naselli SM. Diffusion-weighted echo-planar MR imaging of CNS involvement in systemic lupus erythematosus. Acad Radiol. 2001 Aug;8(8):741-53. doi: 10.1016/S1076-6332(03)80581-0.
- Steens SC, Steup-Beekman GM, Bosma GP, Admiraal-Behloul F, Olofsen H, Doornbos J, Huizinga TW, van Buchem MA. The effect of corticosteroid medication on quantitative MR parameters of the brain. AJNR Am J Neuroradiol. 2005 Nov-Dec;26(10):2475-80.
- Dehmeshki J, Van Buchem MA, Bosma GP, Huizinga TW, Tofts PS. Systemic lupus erythematosus: diagnostic application of magnetization transfer ratio histograms in patients with neuropsychiatric symptoms--initial results. Radiology. 2002 Mar;222(3):722-8. doi: 10.1148/radiol.2223010413.
- Peterson PL, Howe FA, Clark CA, Axford JS. Quantitative magnetic resonance imaging in neuropsychiatric systemic lupus erythematosus. Lupus. 2003;12(12):897-902. doi: 10.1191/0961203303lu499oa.
- Moritani T, Hiwatashi A, Shrier DA, Wang HZ, Numaguchi Y, Westesson PL. CNS vasculitis and vasculopathy: efficacy and usefulness of diffusion-weighted echoplanar MR imaging. Clin Imaging. 2004 Jul-Aug;28(4):261-70. doi: 10.1016/S0899-7071(03)00191-8.
- Sun SS, Huang WS, Chen JJ, Chang CP, Kao CH, Wang JJ. Evaluation of the effects of methylprednisolone pulse therapy in patients with systemic lupus erythematosus with brain involvement by Tc-99m HMPAO brain SPECT. Eur Radiol. 2004 Jul;14(7):1311-5. doi: 10.1007/s00330-003-2166-3. Epub 2003 Dec 9.
研究记录日期
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