| Title |
MRI driven magnetic microswimmers
|
|---|---|
| Published in |
Biomedical Microdevices, October 2011
|
| DOI | 10.1007/s10544-011-9594-7 |
| Pubmed ID | |
| Authors |
Gábor Kósa, Péter Jakab, Gábor Székely, Nobuhiko Hata |
| Abstract |
Capsule endoscopy is a promising technique for diagnosing diseases in the digestive system. Here we design and characterize a miniature swimming mechanism that uses the magnetic fields of the MRI for both propulsion and wireless powering of the capsule. Our method uses both the static and the radio frequency (RF) magnetic fields inherently available in MRI to generate a propulsive force. Our study focuses on the evaluation of the propulsive force for different swimming tails and experimental estimation of the parameters that influence its magnitude. We have found that an approximately 20 mm long, 5 mm wide swimming tail is capable of producing 0.21 mN propulsive force in water when driven by a 20 Hz signal providing 0.85 mW power and the tail located within the homogeneous field of a 3 T MRI scanner. We also analyze the parallel operation of the swimming mechanism and the scanner imaging. We characterize the size of artifacts caused by the propulsion system. We show that while the magnetic micro swimmer is propelling the capsule endoscope, the operator can locate the capsule on the image of an interventional scene without being obscured by significant artifacts. Although this swimming method does not scale down favorably, the high magnetic field of the MRI allows self propulsion speed on the order of several millimeter per second and can propel an endoscopic capsule in the stomach. |
Mendeley readers
The data shown below were compiled from readership statistics for 80 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 3 | 4% |
| United States | 2 | 3% |
| Netherlands | 1 | 1% |
| Israel | 1 | 1% |
| Germany | 1 | 1% |
| Unknown | 72 | 90% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 21 | 26% |
| Student > Master | 11 | 14% |
| Student > Bachelor | 8 | 10% |
| Researcher | 7 | 9% |
| Student > Doctoral Student | 6 | 8% |
| Other | 13 | 16% |
| Unknown | 14 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Engineering | 36 | 45% |
| Medicine and Dentistry | 7 | 9% |
| Physics and Astronomy | 6 | 8% |
| Agricultural and Biological Sciences | 3 | 4% |
| Psychology | 2 | 3% |
| Other | 7 | 9% |
| Unknown | 19 | 24% |
Attention Score in Context
This research output has an Altmetric Attention Score of 11. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 January 2012.
All research outputs
#2,880,806
of 22,659,164 outputs
Outputs from Biomedical Microdevices
#43
of 745 outputs
Outputs of similar age
#16,134
of 140,978 outputs
Outputs of similar age from Biomedical Microdevices
#1
of 17 outputs
Altmetric has tracked 22,659,164 research outputs across all sources so far. Compared to these this one has done well and is in the 87th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 745 research outputs from this source. They receive a mean Attention Score of 4.1. This one has done particularly well, scoring higher than 94% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 140,978 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 88% of its contemporaries.
We're also able to compare this research output to 17 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 94% of its contemporaries.