On the comparison of the accuracies of optical tracking and EMTS modalities of surgical navigators

Koivukangas, Tapani; Katisko, Jani

doi:10.1109/cibec.2010.5716067

Cited by 4 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After imaging, the phantom was fixed on the measurement platform and the error analysis was conducted according to the accuracy assessment protocol as earlier presented by the authors of this paper [1], [3].…”

Section: B Methodsmentioning

confidence: 99%

“…The error analysis used in this study was based on the displacement error between the known phantom accuracy assessment point coordinates and the coordinates obtained from the navigator as shown in Equation (1): [4] Error = (measured value) -(true value) (1) where measured value was the navigator output coordinates and true value the corresponding points on the phantom. The result gave the error for each accuracy assessment point and the mean accuracy over the whole volume.…”

Section: B Methodsmentioning

confidence: 99%

“…The present phantom has earlier been used for accuracy assessment of a surgical navigator that has both optical tracking modality and tracking based on electromagnetic tracking system [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Technical accuracy of an O-arm registered surgical navigator

Koivukangas

Katisko

Koivukangas

2011

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

View full text Add to dashboard Cite

The objective of this study was to assess the accuracy of a commercial surgical navigator using optical tracking modality with automated registration between O-arm images and the scanned object. Automated registration was enabled by using the spine navigation software of the navigator. The used phantom was designed by the authors of this paper. The surgical navigators and the O-arm are routinely used at Oulu University Hospital, Oulu, Finland. The distances measured with the surgical navigator from the fixed origin of the phantom were compared to the known phantom accuracy assessment coordinates. The error of the surgical navigator was the difference between measured and true values. The mean displacement error was 0.20 mm with a standard deviation of 0.14 mm. The results show that automated registration is very reliable for image guided surgery (IGS) and that the present accuracy assessment method can be used to periodically check surgical navigator accuracy using O-arm data.

show abstract

Section: B Methodsmentioning

confidence: 99%

Section: B Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Technical accuracy of an O-arm registered surgical navigator

Koivukangas

Katisko

Koivukangas

2011

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

View full text Add to dashboard Cite

show abstract

“…Setups used for TTRE assessment resemble the clinical application using a DRB and a tracked pointer much closer. A commonly used approach is the measurement of points with a tracked pointer on a static mechanical phantom with holes at known positions, optionally a DRB to which the pointer measurements are referenced is attached to the phantom 1,8,14,25–28 . Although this approach is closer to the application, the assumption that the phantom, which represents a body part, and its attached DRB does not move during the surgery can result in an underestimation of the error during clinical application 14 .…”

Section: Introductionmentioning

confidence: 99%

An improved method for assessing the technical accuracy of optical tracking systems for orthopaedic surgical navigation

Herregodts

Verhaeghe

Coninck

et al. 2021

Robotics Computer Surgery

View full text Add to dashboard Cite

Background Optical tracking systems (OTSs) are essential components of many modern computer assisted orthopaedic surgery (CAOS) systems but patient movement is often neglected in the evaluation of the accuracy. The aim of this study was to develop a representative test to assess the accuracy of OTSs including patient movement and demonstrate the effect of pointer design and OTS choice. Method A mobile phantom with dynamic reference base (DRB) attached was designed and constructed. The point registration trueness and precision were evaluated for measurements with both a static and moving phantom. Results The trueness of the total target registration error (TTRE) was 1.4 to 2.7 times worse with a moving phantom compared to a static phantom. Conclusion The accuracy of OTSs for CAOS applications should be evaluated by measurements with a moving phantom as the evaluation of the TTRE with a static frame significantly underestimates the measurement error.

show abstract