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Hyperpolarized ^(13)C MRI in hepatocellular carcinoma:Unmet questions during clinical translation

Chinese Medical Journal 2024年第13期137卷 1516-1518页

作者： Zheng Ye Bin Song christoffer laustsen Department of Radiology West China HospitalSichuan UniversityChengduSichuan 610041China The MR Research Center Department of Clinical MedicineAarhus UniversityAarhus N 8200Denmark

Hyperpolarized(HP)^(13)C magnetic resonance imaging(MRI)is a powerful molecular imaging *** dissolution dynamic nuclear polarization(d-DNP),it can achieve dramatic signal increase and allows for dynamic and quantitative investigation of real-time metabolism in vivo.[1]The typical HP^(13)C MRI workflow begins with formulating the^(13)C probe,and then placing it in the hyperpolarization equipment to achieve the desired signal amplification level,which typically amounts to an increase in the MRI signal by more than 10,000 *** subsequent data acquisition is supported by a specialized^(13)C coil and^(13)C acquisition sequence,and finally quantitative and visualized metabolic information is obtained through a post-processing *** date,research of HP^(13)C MRI has focused on diabetes,cardiovascular diseases,and cancers,[2]showing great promises in tumor detection and the evaluation of therapeutic efficacy.

关键词： metabolism polarized specialized

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Hyperbaric Oxygen Treatment for Diabetic Retinopathy and Neuropathy in a Streptozotocin Induced Diabetic Rat Model

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Journal of Biomedical Science and Engineering 2021年第12期14卷 391-401页

作者： Jesper G. Madsen Martin N. Skov Kasper Hansen christoffer laustsen Niels Ejskjær Henning Andersen Michael Pedersen Department of Clinical Medicine Comparative Medicine Lab Aarhus University Aarhus Denmark Zoophysiology Department of Biology Aarhus University Aarhus C Denmark Department of Forensic Medicine Aarhus University Aarhus N Denmark Department of Clinical Medicine The MR Research Centre Aarhus University Aarhus Denmark Department of Clinical Medicine Aalborg University Aalborg Denmark Steno Diabetes Center North Denmark Aalborg University Hospital Aalborg Denmark Department of Neurology Aarhus University Hospital Aarhus Denmark

Aim: Diabetes Mellitus is a global public health challenge with major and potentially devastating complications, and concomitant complications include retinopathy and neuropathy due to hypoxia and microvascular dysfunction. In this study, we investigated the effect of hyperbaric oxygen therapy as a method to transiently improve tissue oxygenation on diabetic retinopathy and neuropathy in a streptozotocin induced type-1 diabetic rat model (Wistar). Methods: Streptozotocin induced type-1 diabetic rats received 10 sessions of 2-h hyperbaric oxygen exposures (pO2 = 309 kPa) over 2 weeks. Animals were exposed to light stimuli to produce light evoked potentials to estimate the effect of oxygen treatment on diabetic retinopathy. Sciatic nerves were exposed and stimulated to produce muscle evoked potential, which were recorded in the muscles of the foot and subsequently used to evaluate the effect of oxygen treatment on diabetic neuropathy. Results: We found significantly shorter light evoked potential latency and increased amplitude in hyperbaric oxygen treated animals. No change was found in nerve conduction. Conclusions: This study showed that hyperbaric oxygen therapy is a potentially effective treatment for diabetic retinopathy, improving both latency and amplitude of light evoked potentials.

关键词： Diabetic Neuropathy Diabetic Retinopathy Hyperbaric Oxygen Therapy

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超极化磁共振波谱的原理和应用

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磁共振成像 2015年第12期6卷 881-887页

作者：齐海云张晓璐徐雅芳文建国许予明程敬亮 Albert P.Chen Lotte Bonde Bertelsen Steffen Ringgaard christoffer laustsen Hans Stodkilde-Jorgensen MR研究中心临床医学系奥胡斯大学郑州大学第一附属医院郑州450052 GE Healthcare

通过动态核极化(dynamic nuclear polarization,DNP)的方法使原子核自旋极化达到热平衡之上来增强分子磁共振10,000倍以上的信号,这一过程称为超极化(hyperpolarization,HP)。溶解性DNP允许超极化分子以液体形式转移至生物体内,可实时... 详细信息

通过动态核极化(dynamic nuclear polarization,DNP)的方法使原子核自旋极化达到热平衡之上来增强分子磁共振10,000倍以上的信号,这一过程称为超极化(hyperpolarization,HP)。溶解性DNP允许超极化分子以液体形式转移至生物体内,可实时观测体内的生物灌注、代谢产物的运输和代谢反应。该技术的发明克服了传统磁共振信号低,不能实时监测体内代谢过程的缺点。本文旨在介绍动态核极化的定义和技术、常用的超极化生物探针、超极化磁共振波谱图像的结果分析以及初步的动物实验和临床试验结果。

关键词：超极化动态核极化生物探针生物反应器磁共振波谱磁共振成像

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Hyperbaric Oxygen Treatment for Diabetic Retinopathy and Neuropathy in a Streptozotocin Induced Diabetic Rat Model

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Journal of Biomedical Science and Engineering（生物医学工程） 2021年第12期

作者： Jesper G. Madsen Martin N. Skov Kasper Hansen christoffer laustsen Niels Ejskjær Henning Andersen Michael Pedersen

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