Image-Guided Technique in Neurotology

Labadie, Robert F.; Majdani, Omid; Fitzpatrick, J. Michael

doi:10.1016/j.otc.2007.03.006

Cited by 32 publications

(27 citation statements)

References 24 publications

(27 reference statements)

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“…Several groups of researchers have tried to find an appropriate means of creating (by drilling) a minimally invasive approach to the cochlea for CI surgery [8][9][10][11][12][13][14][15][16][17]. Once the procedure is established, it might reduce the operative time compared with conventional CI surgery.…”

Section: Introductionmentioning

confidence: 99%

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A robot-guided minimally invasive approach for cochlear implant surgery: preliminary results of a temporal bone study

et al. 2009

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Section: Introductionmentioning

confidence: 99%

“…Introduced by Labadie et al, this is essentially a small, patient-specific stereotaxy frame which can be affixed to the patient's skull during the procedure [13,14].…”

Section: Introductionmentioning

confidence: 99%

A robot-guided minimally invasive approach for cochlear implant surgery: preliminary results of a temporal bone study

et al. 2009

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“…(17) The scanned images could be used in navigation systems in the anterior and lateral skull base (18,19).…”

Section: Discussionmentioning

confidence: 99%

Accuracy Assessment of Different Registration and Imaging Methods on Image-Guided Surgery of Lateral Skull Base

et al. 2018

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Background: The use of Image Guided Surgery (IGS) systems at lateral skull base surgery is controversial due to the limitation of the accuracy of the systems. The intraoperative accuracy of the IGS is dependent on deferent parameters, mainly the precision of the system, resolution of utilized imaging, rigidity of the reference frame/adaptor, registration method, calibration of the utilized instruments, and intraoperative movement of the reference markers. Objectives: In this study the researchers examined the target registration error of an electromagnetic IGS system on different important structures of lateral skull base through different approaches. This study compared two registration methods and two scanning systems. Methods: In 10 formaldehyde-fixed human cadaver heads, 69 target points were marked with titanium screws for determining target registration errors. The target points were facial nerve, lateral semi-circular canal, geniculate ganglion, superior semi-circular canal, internal auditory canal, and the foramen rotundum. Seven heads were scanned using a Cone Beam CT Scanner (CBCT) and three heads were scanned using a CT scanner. Three screws were implanted around the mastoidectomy cavity as Fiducial Markers (FM). Two different registration methods were applied, including point based registration using the FM versus surface registration. All samples were dissected via the middle cranial fossa approach, retrosigmoid approach, and transmastoid approaches. Results: The overall accuracy of the IGS-system was 1.2 mm and plusmn; 0.15 mm. Optimum accuracy was reached with CBCT-scan and the FM registration marker. Navigation using CT scans with the surface registration method, using CT scans with FM registration method, and using CBCT-scans with surface registration method had lower accuracy, respectively, yet their difference was not statistically significant (P > 0.5). The best accuracy was noted on the facial nerve in the mastoid approach (mean 0.8 mm). Conclusions:The feasibility of the use of an electromagnetic IGS system in lateral skull base, surgery using Cone Beam CT as well as conventional CT scanner with fiducial marker registration as well as surface registration were evaluated. The accuracy was best at the lateral region of the temporal bone and decreased on further medial targets, such as lower cranial nerve and trigeminal ganglion.

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“…Since that time, technology has steadily improved through (a) increased image resolution and geometric fidelity, (b) increased computer speed and memory capacity and (c) improved devices and algorithms for registering patient anatomy from intra-operative physical space to pre-operative image space. As a result, today, with the use of bone-implanted fiducial markers, a surgeon can see images on a computer display updated thirty times per second showing the position of a tracked probe to an accuracy of better than 1 mm [5], and with skin-affixed markers or laser contouring, to an accuracy of between 1.3 and 2.7 mm [6]. Peters has given recent review of the literature on image guidance for surgical procedures [7].…”

Section: Introductionmentioning

confidence: 99%

“…While there are over 100,000 mastoidectomies performed per year, image-guided systems are not prevalent in the fields of otology and neuro-otology [9]. Additionally, there are many critical structures present in the surgical field, such as the facial nerve, horizontal semi-circular canal, and the sigmoid sinus.…”

Section: Introductionmentioning

confidence: 99%