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Updated: May 25, 2026
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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)
Published on: August 4, 2018
Design and evaluation of an optically-tracked single-CCD laser range scanner
Thomas S Pheiffer1, Amber L Simpson, Brian Lennon
1Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA. thomas.s.pheiffer@vanderbilt.edu
Medical Physics
|February 11, 2012
Summary
A new single-lens laser range scanner accurately captures organ surface geometry and color for real-time updates in image-guided neurosurgery, improving surgical precision.
Area of Science:
- Medical Imaging
- Surgical Technology
- Biomedical Engineering
Background:
- Image-guided surgery relies on accurate real-time data.
- Measuring soft tissue geometric changes during surgery is challenging.
- Laser range scanning offers potential for intraoperative measurements.
Purpose of the Study:
- To develop and evaluate a novel laser range scanner for intraoperative use.
- To enable real-time geometric updates in image-guided neurosurgery.
- To integrate surface geometry and color capture into a single device.
Main Methods:
- An optically-tracked, single-lens laser range scanner (LRS) was designed.
- The LRS captures surface geometry and color information simultaneously.
- Geometric accuracy was assessed using a high-precision phantom.
- Tracking accuracy was evaluated in various operating room configurations.
Main Results:
- The LRS achieved a mean geometric error of 0.25 ± 0.40 mm (RMS 0.47 mm).
- Tracking accuracy demonstrated a mean error of 2.2 ± 1.0 mm (RMS 2.4 mm).
- The scanner maintained tracking accuracy across diverse orientations.
Conclusions:
- A single-lens laser range scanner was successfully developed.
- The LRS design provides sufficient accuracy for image-guided surgery.
- This technology can enhance intraoperative updates in neurosurgery.
