New visualization tools: computer vision and ultrasound for MIS navigation

Kilian, Pascal; Plaskos, Christopher; Parratte, Sébastien; Argenson, Jean-Noël; Stindel, Éric; Tonetti, Jérôme; Lavallée, Stéphane

doi:10.1002/rcs.178

Cited by 9 publications

(7 citation statements)

References 18 publications

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“…This technology is an adaptation of the Bone Morphing using ultrasound. To verify our hypothesis concerning the error related to the percutaneous palpation and second to validate the Echo-Point ® technology, we performed a cadaver study comparing different acquisition conditions [15,16]. The results of this study confirmed that the cutaneous APP is not reliable to estimate the bony APP with major discrepancies between the two planes, more than 20 for the obese patients in the sagittal plane.…”

Section: Technological Limitssupporting

confidence: 69%

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Computer-assisted cup positioning in total hip arthroplasty: usefulness, limits and future

2008

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The basic hypothesis for computer-assisted placement of the cup in total hip arthroplasty (THA) is that navigation will improve cup positioning around the targeted values previously defined in the literature as the gold standard for cup placement and reduce the number of outliers. Reducing the outliers will theoretically reduce the number of dislocation, improve range of motion and reduce wear. We will present the surgical technique, and the results of a prospective randomized study comparing computer-assisted cup positioning with free-hand placement. Furthermore we will outline some limitations of the navigation systems in hip surgery observed during our early experience through the results of complementary anatomical and clinical studies. Finally we will discuss the potential for future development of computerassisted THA.

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Section: Technological Limitssupporting

confidence: 69%

“…Our results also confirmed the potential interest of the Echo-Point ® technology for the acquisition of the APP. The next step will be the clinical validation of these technologies [15,16]. …”

Section: Technological Limitsmentioning

confidence: 99%

Computer-assisted cup positioning in total hip arthroplasty: usefulness, limits and future

2008

Self Cite

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“…4,13 Intraoperatively, the preregistered data are matched to the patient's individual coordinates by identifi cation and palpation of various landmarks. 14 The major disadvantage of these systems is the associated exposure to ionizing radiation. 13 This article presents the preliminary results of 10 patients operated with a novel 3-D freehand ultrasound system for navigated THA, highlighting its clinical applicability, specifi c problems, and limitations.…”

Section: E816mentioning

confidence: 99%

Navigated Total Hip Arthroplasty Using a 3-D Freehand Ultrasound System: Technical Note and Preliminary Results

Hirschmann¹,

Afifi²,

Helfrich³

et al. 2011

Orthopedics

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“…From a number of these partial images the shape and volume of the complete object could be reconstructed using interpolation or morphing techniques [10]. The possibility is strongly suggested by the images in Fig.…”

Section: Medical Imager Capabilitymentioning

confidence: 99%

Capabilities of Ultrasound for Monitoring and Quantitative Analysis of Polyolefin Waste Particles in Magnetic Density Separation (MDS)

Bakker¹,

Sanaee²

2010

TOWMJ

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Abstract:A study was conducted into the potential of ultrasound as a qualitative and quantitative tool for the Magnetic Density Separator (MDS), where an ultrasound sensor array will operate from inside the MDS ferrofluid. The desired applications of the ultrasound are monitoring of polyolefin particles in flow during the separation process, and performing throughput measurements and quality inspection. The possibility to adapt off-the-shelf medical imaging technology was investigated with an eye towards the real-time requirements for industrial application. It is shown that a medical imager can be adapted for monitoring the flowing particles at speeds up to 30 cm/s, and the imaging quality can be very good under optimum viewing angle conditions. Ultrasound imaging may also allow for quantitative through-put analysis provided the flowing particles are sufficiently spaced, which puts a limit to the maximum measurable throughput. If viewing conditions are not optimum the medical imager relies on the human operator to improve image quality. This situation is undesired for industrial operation where there may be little or no time for operator intervention. To anticipate these occurrences a second imaging method is proposed that could act in conjunction, which is effective since it is based on a different physical principle. Ultrasound quality inspection is a very different technique, and its feasibility depends first of all on whether different types of polyolefin are acoustically distinctive. Using experiments and 3D acoustic computer modelling to determine wave speed and material attenuation, the potential of ultrasound for polyolefin identification under immersed conditions was investigated. With a calibrated measurement setup it is shown that polyolefins may potentially be classified into acoustically distinctive groups. The possible errors in throughput measurement and quality inspection and the requirements for these techniques to perform under operational MDS conditions are also addressed.

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New visualization tools: computer vision and ultrasound for MIS navigation

Cited by 9 publications

References 18 publications

Computer-assisted cup positioning in total hip arthroplasty: usefulness, limits and future

Computer-assisted cup positioning in total hip arthroplasty: usefulness, limits and future

Navigated Total Hip Arthroplasty Using a 3-D Freehand Ultrasound System: Technical Note and Preliminary Results

Capabilities of Ultrasound for Monitoring and Quantitative Analysis of Polyolefin Waste Particles in Magnetic Density Separation (MDS)

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