Author:
Gusso Silmara,Salvador Carlo,Hofman Paul,Cutfield Wayne,Baldi James C,Taberner Andrew,Nielsen Poul
Abstract
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.
Publisher
Springer Science and Business Media LLC
Subject
Radiology Nuclear Medicine and imaging,Biomedical Engineering,General Medicine,Biomaterials,Radiological and Ultrasound Technology
Reference23 articles.
1. Bottini PB, Carr AA, Prisant LM, Flickinger FW, Allison JD, Gottdiener JS: Magnetic resonance imaging compared to echocardiography to assess left ventricular mass in the hypertensive patient. Am J Hypertens 1995, 8: 221–228. 10.1016/0895-7061(94)00178-E
2. Missouris CG, Forbat SM, Singer DR, Markandu ND, Underwood R, MacGregor GA: Echocardiography overestimates left ventricular mass: a comparative study with magnetic resonance imaging in patients with hypertension. J Hypertens 1996, 14: 1005–1010.
3. Sandstede J, Lipke C, Beer M, Hofmann S, Pabst T, Kenn W, Neubauer S, Hahn D: Age- and gender-specific differences in left and right ventricular cardiac function and mass determined by cine magnetic resonance imaging. Eur Radiol 2000, 10: 438–442. 10.1007/s003300050072
4. Jochims M, Bruder O, Jensen C, Sabin G: High-dose dobutamine stress cardiac MR imaging for detection of myocardial ischemia. Magnetom 2007, 2: 42–49.
5. Cheng CP, Schwandt DF, Topp EL, Anderson JH, Herfkens RJ, Taylor CA: Dynamic exercise imaging with an MR-compatible stationary cycle within the general electric open magnet. Magn Reson Med 2003, 49: 581–585. 10.1002/mrm.10364
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