Image-based measurement by instrument tip tracking for tympanoplasty using digital surgical microscopy

Gard, Niklas; Rosenthal, Jean-Claude; Jurk, Silvio; Schneider, Armin; Eisert, Peter

doi:10.1117/12.2512415

Cited by 6 publications

(9 citation statements)

References 17 publications

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“…The other two core components are the registration of the virtual environment with real space, and the display technology to combine the virtual and real environment, respectively. In clinical use, the overlaid images can be displayed on many surfaces: monitors, 213 – 216 optics (i.e., microscope), 50 – 52 , 57 , 63 , 199 , 205 , 217 , 218 head-mounted devices (i.e., smart glasses), 219 – 222 semitransparent surfaces, 223 – 225 and the patient. 207 , 226 – 228 Using AR with a surgical microscope facilitates navigation with multiple magnifications and would not require additional AR system cost since surgical microscopes are available in most modern operating rooms.…”

Section: Technical Aspects Of Surgical Microscopementioning

confidence: 99%

“…Gard et al. 218 used an image-based method to track a green-colored instrument tip under a surgical microscope for trajectory creation in tympanoplasty.…”

Section: Technical Aspects Of Surgical Microscopementioning

confidence: 99%

“… 210 Overall, the registration errors for clinical AR range from 0.3 to 4.2 mm, mostly 2 to 3 mm. 199 , 206 , 207 , 212 , 218 , 232 , 235 , 241 …”

Section: Technical Aspects Of Surgical Microscopementioning

confidence: 99%

See 2 more Smart Citations

Comprehensive review of surgical microscopes: technology development and medical applications

Fei

2021

J. Biomed. Opt.

100

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Section: Technical Aspects Of Surgical Microscopementioning

confidence: 99%

“…Gard et al. 218 used an image-based method to track a green-colored instrument tip under a surgical microscope for trajectory creation in tympanoplasty.…”

Section: Technical Aspects Of Surgical Microscopementioning

confidence: 99%

See 1 more Smart Citation

Comprehensive review of surgical microscopes: technology development and medical applications

Fei

2021

J. Biomed. Opt.

100

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“…On the one hand, digital stereoscopic image acquisition allows three-dimensional (3D) reconstruction of the situs. Based on 3D reconstruction results, contactless and radiation-free metric measurements of the anatomical structures can be performed [ 16 ]. In addition, spectral imaging can be used to detect optical tissue properties that are normally indistinguishable to the human eye [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Surgical Guidance for Removal of Cholesteatoma Using a Multispectral 3D-Endoscope

Wisotzky

Rosenthal

Wege

et al. 2020

Sensors

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We develop a stereo-multispectral endoscopic prototype in which a filter-wheel is used for surgical guidance to remove cholesteatoma tissue in the middle ear. Cholesteatoma is a destructive proliferating tissue. The only treatment for this disease is surgery. Removal is a very demanding task, even for experienced surgeons. It is very difficult to distinguish between bone and cholesteatoma. In addition, it can even reoccur if not all tissue particles of the cholesteatoma are removed, which leads to undesirable follow-up operations. Therefore, we propose an image-based method that combines multispectral tissue classification and 3D reconstruction to identify all parts of the removed tissue and determine their metric dimensions intraoperatively. The designed multispectral filter-wheel 3D-endoscope prototype can switch between narrow-band spectral and broad-band white illumination, which is technically evaluated in terms of optical system properties. Further, it is tested and evaluated on three patients. The wavelengths 400 nm and 420 nm are identified as most suitable for the differentiation task. The stereoscopic image acquisition allows accurate 3D surface reconstruction of the enhanced image information. The first results are promising, as the cholesteatoma can be easily highlighted, correctly identified, and visualized as a true-to-scale 3D model showing the patient-specific anatomy.

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“…On one hand, digital stereoscopic image acquisition makes a three-dimensional (3D) reconstruction of the situs possible. This allows contactless metric measurements of anatomical structures [1]. In addition, spectral imaging can be used to detect optical tissue properties that are normally invisible to the human eye [4].…”

Section: Introductionmentioning

confidence: 99%

A multispectral 3D-Endoscope for Cholesteatoma Removal

Wisotzky

Rosenthal

Hilsmann

et al. 2020

Current Directions in Biomedical Engineering

Self Cite

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We present a stereo-multispectral endoscopic prototype using a filter-wheel to guide the removal of cholesteatoma tissue in the middle ear. An image-based method is used that combines multispectral tissue classification for the detection of tissue to be removed and 3Dreconstruction to determine its metric dimensions. The multispectral illumination used for tissue classification ranges from λ = 400 nm to λ = 500 nm with step-size of 20 nm, which results in six different narrow-band illumination modes. For classical RGB imaging and metric calculations, a broadband illumination mode is applied before and after the narrow-band illumination. The spectral information is augmented into the broadband mode using an overlay technique. The combination of multispectral imaging with stereoscopic 3D-reconstruction results in new valuable visualization of intraoperative data. This allows to generate a 3D-model of the patients anatomy highlighting the identified malicious tissue and compare the anatomical dimensions with pre-operative CT data.

show abstract

Image-based measurement by instrument tip tracking for tympanoplasty using digital surgical microscopy

Cited by 6 publications

References 17 publications

Comprehensive review of surgical microscopes: technology development and medical applications

Comprehensive review of surgical microscopes: technology development and medical applications

Surgical Guidance for Removal of Cholesteatoma Using a Multispectral 3D-Endoscope

A multispectral 3D-Endoscope for Cholesteatoma Removal

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