Design and testing of an MRI-compatible cycle ergometer for non-invasive cardiac assessments during exercise
Design and testing of an MRI-compatible cycle ergometer for non-invasive cardiac assessments during exercise
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DOI：
10.1186/1475-925x-11-13
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发表时间：
2012-03-18
影响因子：
3.9
通讯作者：
Nielsen, Poul
中科院分区：
文献类型：
--
作者：
Gusso, Silmara;Salvador, Carlo;Nielsen, Poul
背景：磁共振成像（MRI）是心脏研究的重要工具，经常用于静息心脏评估。然而，对非药物应激心脏评估的研究是有限的。方法：我们旨在设计一种便携且相对便宜的MRI循环测力仪，能够在患者运动以保持目标心率时连续测量蹬车工作量。结果：我们构建并测试了用于1.5 T MRI扫描仪的MRI兼容循环劳力计。成功获得8名健康成人的静息和次最大运动图像（每分钟110次跳动）。结论：我们的研究小组构建的mri兼容的循环计力仪可以在固定心率下进行心脏评估，同时通过直接测量踏板力和曲柄旋转连续记录功率输出。
Background: Magnetic resonance imaging (MRI) is an important tool for cardiac research, and it is frequently used for resting cardiac assessments. However, research into non-pharmacological stress cardiac evaluation is limited.Methods: We aimed to design a portable and relatively inexpensive MRI cycle ergometer capable of continuously measuring pedalling workload while patients exercise to maintain target heart rates.Results: We constructed and tested an MRI-compatible cycle ergometer for a 1.5 T MRI scanner. Resting and sub-maximal exercise images (at 110 beats per minute) were successfully obtained in 8 healthy adults.Conclusions: The MRI-compatible cycle ergometer constructed by our research group enabled cardiac assessments at fixed heart rates, while continuously recording power output by directly measuring pedal force and crank rotation.