Can coffee improve image guidance?

  title={Can coffee improve image guidance?},
  author={R. Wirz and R. Lathrop and I. Godage and J. Burgner-Kahrs and P. Russell and R. Webster},
  booktitle={Medical Imaging},
Anecdotally, surgeons sometimes observe large errors when using image guidance in endonasal surgery. We hypothesize that one contributing factor is the possibility that operating room personnel might accidentally bump the optically tracked rigid body attached to the patient after registration has been performed. In this paper we explore the registration error at the skull base that can be induced by simulated bumping of the rigid body, and find that large errors can occur when simulated bumps… Expand
2 Citations
Coffee: the key to safer image-guided surgery—a granular jamming cap for non-invasive, rigid fixation of fiducial markers to the patient
The granular jamming cap concept increases the robustness and accuracy of image-guided sinus and skull base surgery by more firmly attaching fiducial markers to the patient’s skull. Expand
Design, Static and Performance Analysis of a Parallel Robot for Head Stabilisation in Vitreoretinal Surgery
This paper explores the requirements-based design and static analysis of a 6 Degree-of-Freedom parallel robotic headrest, of novel architecture, to counter head motion in vitreoretinal surgery.Expand


Image-guided surgery: what is the accuracy?
Use of image-guided surgery (IGS) systems in otolaryngology, particularly rhinology, has grown exponentially in recent years and there is great variability in reporting system specifications-particularly error of IGS systems. Expand
The role of registration in accurate surgical guidance
  • J. Fitzpatrick
  • Computer Science, Medicine
  • Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
  • 2010
The three most well-established approaches to guidance, namely the stereotactic frame, point fiducials, and surface matching, are examined in detail, together with two new approaches based on microstereotactic frames. Expand
Comparison Study of Intraoperative Surface Acquisition Methods for Surgical Navigation
The results suggest that tissue displacements due to contact force and attempts to maintain contact with tissue, compromise registrations that are dependent on data acquired from a tracked surgical instrument and an alternative method (tracked conoscopic holography) of digitizing surfaces for clinical usage is provided. Expand
Skin shift and its effect on navigation accuracy in image-guided neurosurgery
Results indicated that skin shift was caused by the fixation, and that this shift reduced the navigation accuracy, and intraoperative MRI can correct the effect of skin shift. Expand
Quantification of True In Vivo (Application) Accuracy in Cranial Image-guided Surgery: Influence of Mode of Patient Registration
Application accuracy of image-guidance is worse without implanted cranial markers, and cranium-implanted fiducials should be considered when high accuracy and reproducibility are needed. Expand
Minimally Invasive Holographic Surface Scanning for Soft-Tissue Image Registration
A system based on conoscopic holography that is capable of minimally invasive surface scanning and suitable for use with biological tissues is described, and can provide surface scans of comparable quality to existing clinically used laser range scanning systems that require open surgery. Expand
A study on the theoretical and practical accuracy of conoscopic holography‐based surface measurements: toward image registration in minimally invasive surgery
Tracked conoscopic holography (which provides distance measurements) has been recently proposed as a minimally invasive way to obtain surface scans and moving this technique from concept to clinical use requires a rigorous accuracy evaluation, which is the purpose of this paper. Expand
Image-guided surgery and medical robotics in the cranial area
  • G. Widmann
  • Computer Science, Medicine
  • Biomedical imaging and intervention journal
  • 2007
Surgery in the cranial area includes complex anatomic situations with high-risk structures and high demands for functional and aesthetic results. Conventional surgery requires that the surgeonExpand
Comparison of 4 Registration Strategies for Computer-Aided Maxillofacial Surgery
Of the techniques tested for CAS registration, invasive fiducial markers are the most accurate, while skin surface landmarks, bony landmarks, and an intraoral splint are incrementally less accurate. Expand
[The use of the BrainLAB Kolibri navigation system in endoscopic paranasal sinus surgery under local anaesthesia. An analysis of 35 cases].
The BrainLAB Kolibri navigation system offers good accuracy, a short setup time and an easy registration technique and the combination of these qualities and intuitive operation make this system a suitable option for routine use in paranasal sinus surgery. Expand