Optimisation and evaluation of an electromagnetic tracking device for high-accuracy three-dimensional ultrasound imaging of the carotid arteries

Barratt, Dean C.; Davies, Alun H.; Hughes, Alun D.; Thom, Simon; Humphries, K.N.

doi:10.1016/s0301-5629(01)00395-7

Cited by 50 publications

(21 citation statements)

References 26 publications

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“…Using these titles, a systematic search of relevant literature was performed in the period from December 2012 to June 2013, using the scientific search engines PubMed 1 , IEEE Xplore 2 and Google Scholar 3 . We extended the search by a manual screening of the most important conference proceedings, namely SPIE 4 Medical Imaging, CARS 5 , MICCAI 6 and several IEEE 7 conferences. Additionally, the literature repositories (including online library access and conference proceedings) of the authors and other experts were screened for further important papers.…”

Section: Methods Of Literature Researchmentioning

confidence: 99%

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Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Franz

Haidegger

Birkfellner

et al. 2014

IEEE Trans. Med. Imaging

385

273

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Abstract-Object tracking is a key enabling technology in the context of computer-assisted medical interventions. Allowing the continuous localization of medical instruments and patient anatomy, it is a prerequisite for providing instrument guidance to subsurface anatomical structures. The only widely used technique that enables real-time tracking of small objects without lineof-sight restrictions is electromagnetic (EM) tracking. While EM tracking has been the subject of many research efforts, clinical applications have been slow to emerge. The aim of this review paper is therefore to provide insight into the future potential and limitations of EM tracking for medical use. We describe the basic working principles of EM tracking systems, list the main sources of error, and summarize the published studies on tracking accuracy, precision and robustness along with the corresponding validation protocols proposed. State-of-the-art approaches to error compensation are also reviewed in depth. Finally, an overview of the clinical applications addressed with EM tracking is given. Throughout the paper, we report not only on scientific progress, but also provide a review on commercial systems. Given the continuous debate on the applicability of EM tracking in medicine, this paper provides a timely overview of the state-of-the-art in the field.

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Section: Methods Of Literature Researchmentioning

confidence: 99%

“…Other Barratt et al [7] Position and rotation phantoms Yoo et al [207] Custom-build for C-arm Kirsch et al [74] Distortion of metals Birkfellner et al [16] 6 DoF Phantom, distortion assessment…”

Section: A Assessment Protocolsmentioning

confidence: 99%

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Franz

Haidegger

Birkfellner

et al. 2014

IEEE Trans. Med. Imaging

385

273

View full text Add to dashboard Cite

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“…These devices typically consist of an RF transponder at the end of a cabled system or an array of RF detectors ("Flock of Birds"). [74][75][76][77][78][79][80] These devices have traditionally been limited to either surface detection or have been used to track instruments inserted into the body such as the SuperDimension RF guided bronchoscopy device (SuperDimension, Inc., Minneapolis, MN), or the MicroPos system (Micropos Medical AB, Gothenburg, Sweden) that is designed to place an RF device into a catheter that is left in place during a radiation procedure.…”

Section: Ic3 Radiofrequency Systemsmentioning

confidence: 99%

Quality assurance for nonradiographic radiotherapy localization and positioning systems: Report of Task Group 147

Willoughby

Lehmann

Bencomo³

et al. 2012

Medical Physics

109

126

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New technologies continue to be developed to improve the practice of radiation therapy. As several of these technologies have been implemented clinically, the Therapy Committee and the Quality Assurance and Outcomes Improvement Subcommittee of the American Association of Physicists in Medicine commissioned Task Group 147 to review the current nonradiographic technologies used for localization and tracking in radiotherapy. The specific charge of this task group was to make recommendations about the use of nonradiographic methods of localization, specifically; radiofrequency, infrared, laser, and video based patient localization and monitoring systems. The charge of this task group was to review the current use of these technologies and to write quality assurance guidelines for the use of these technologies in the clinical setting. Recommendations include testing of equipment for initial installation as well as ongoing quality assurance. As the equipment included in this task group continues to evolve, both in the type and sophistication of technology and in level of integration with treatment devices, some of the details of how one would conduct such testing will also continue to evolve. This task group, therefore, is focused on providing recommendations on the use of this equipment rather than on the equipment itself, and should be adaptable to each user's situation in helping develop a comprehensive quality assurance program.

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“…Barrat et al (5) proved that the geometrical accuracy of a reconstructed carotid phantom was within Ϫ0.53 Ϯ 3.39%. Augst et al (2) found an accuracy of 0.5 N/m 2 for WSS values in the most sensitive regions of a carotid phantom.…”

Section: Combination Of 3d Us and Cfdmentioning

confidence: 99%

Influence of head position on carotid hemodynamics in young adults

Glor¹,

Ariff²,

Hughes³

et al. 2004

American Journal of Physiology-Heart and Circulatory Physiology

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.-Studies in adults have shown marked changes in geometry and relative positions of the carotid arteries when rotating the head. The aim of this study was to quantify the change in geometry and analyze its effect on carotid hemodynamics as a result of head rotation. The right carotid arteries of nine young adult subjects were investigated in supine position with straight and left turned head positions, respectively. The three-dimensional (3D) carotid geometry was reconstructed by using 3D ultrasound (3D US), and the carotid hemodynamics were calculated by combining 3D US with computational fluid dynamics. It was observed that cross-sectional areas and shapes did not change markedly with head rotation, but carotid vessel center lines altered with planarification of the common carotid artery as a main feature (P Ͻ 0.05). Measured common carotid flow rates changed significantly at the individual level when the head was turned, but on the average, the change in mean common carotid flow rate was relatively small (0.37 Ϯ 1.11 ml/s). The effect of the altered center lines and flow rates on the atherogenic nature of the carotid bifurcation was evaluated by using calculated hemodynamic wall parameters, such as wall shear stress (WSS) and oscillatory shear index (OSI). It was found that WSS and OSI patterns changed significantly with head rotation, but the variations were very subject dependent and could not have been predicted without assessing the altered geometry and flow of the carotid bifurcation for individual cases. This study suggests that there is a need for standardization of the choice of head position in the 3D US scan protocol, and that carotid stents and emboli diverters should be studied in different head positions.three-dimensional ultrasound; atherosclerosis; wall shear stress; computational fluid dynamics EFFECTS OF BODY POSTURE and head positioning on respiration and cerebral hemodynamics have been investigated in a number of studies. Effects on respiration seem to suggest that body posture rather than head position has the greatest effects (6). In infants, sleeping in a prone position has been shown to be associated with increases in heart and respiratory rates, decreases in oxygen saturation, and marked pallor compared with infants sleeping in a supine position (33). These changes, however, do not occur with changes in head positions alone (11). In adults, changes in head position also do not seem to change oxygenation or maximum inspiratory pressure. Adopting a supine position, however, increases pharyngeal resistance (38) and has been shown to worsen apneic episodes in those suffering from obstructive sleep apnea (6).The hemodynamic effects of body posture and head position have also been examined. In infants, whereas cerebral blood flow rate remains constant during head rotations in the supine position, keeping the head straight favors cerebral venous drainage and helps to prevent an elevation of cerebral blood volume (29). Eichler et al. (12) showed that in infants, blood velocity profiles changed...

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Optimisation and evaluation of an electromagnetic tracking device for high-accuracy three-dimensional ultrasound imaging of the carotid arteries

Cited by 50 publications

References 26 publications

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Electromagnetic Tracking in Medicine—A Review of Technology, Validation, and Applications

Quality assurance for nonradiographic radiotherapy localization and positioning systems: Report of Task Group 147

Influence of head position on carotid hemodynamics in young adults

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