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设计并测试一种 MRI 兼容的循环测力计，用于在运动过程中进行非侵入性心脏评估。

Design and testing of an MRI-compatible cycle ergometer for non-invasive cardiac assessments during exercise.

机构信息

Liggins Institute, University of Auckland, Auckland, New Zealand.

出版信息

Biomed Eng Online. 2012 Mar 18;11:13. doi: 10.1186/1475-925X-11-13.

DOI:10.1186/1475-925X-11-13
PMID:22423637
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3334686/
Abstract

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.

摘要

背景

磁共振成像（MRI）是心脏研究的重要工具，常用于静息心脏评估。然而，非药物应激心脏评估的研究有限。

方法

我们旨在设计一种便携式且相对廉价的 MRI 测功机，能够在患者进行维持目标心率的运动时连续测量踏车工作量。

结果

我们构建并测试了一款适用于 1.5T MRI 扫描仪的 MRI 兼容测功机。在 8 位健康成年人中成功获得了静息和亚最大运动图像（每分钟 110 次）。

结论

我们研究小组构建的 MRI 兼容测功机能以固定心率进行心脏评估，同时通过直接测量脚踏力和曲柄旋转来连续记录功率输出。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/a2c431249c41/1475-925X-11-13-6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/b6ea9050009f/1475-925X-11-13-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/b28703ffc1f9/1475-925X-11-13-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/2ca82c698c08/1475-925X-11-13-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/555d31a4e6ff/1475-925X-11-13-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/2b62d30d7cd7/1475-925X-11-13-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/a2c431249c41/1475-925X-11-13-6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/b6ea9050009f/1475-925X-11-13-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/b28703ffc1f9/1475-925X-11-13-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/2ca82c698c08/1475-925X-11-13-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/555d31a4e6ff/1475-925X-11-13-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/2b62d30d7cd7/1475-925X-11-13-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae49/3334686/a2c431249c41/1475-925X-11-13-6.jpg

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