The use of Portable Intraoperative Computed Tomography Scanning for Real-Time Image Guidance: A Pilot Cadaver Study

Das, Subinoy; Maeso, Patricia; Figueroa, Ramón; Senior, Brent A.; DelGaudio, John M.; Sillers, Michael J.; Schlosser, Rod J.; Kountakis, Stilianos E.

doi:10.2500/ajr.2008.22.3152

Cited by 14 publications

(13 citation statements)

References 10 publications

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“…They are also beneficial for updating anatomical information real-time for image guided surgery as suggested by Das et al [18]. In this paper, we tested the use of these scanners for image-guided surgical procedures that require submillimetric accuracy and use bone-anchors to achieve it, such as PCI.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of portable CT scanners for otologic image-guided surgery

et al. 2011

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Purpose Portable CT scanners are beneficial for diagnosis in the intensive care unit, emergency room, and operating room. Portable fixed-base versus translating-base CT systems were evaluated for otologic image-guided surgical (IGS) applications based on geometric accuracy and utility for percutaneous cochlear implantation. Methods Five cadaveric skulls were fitted with fiducial markers and scanned using both a translating-base, 8-slice CT scanner (CereTom®) and a fixed-base, flat-panel, volume-CT (fpVCT) scanner (Xoran xCAT®). Images were analyzed for: (a) subjective quality (i.e. noise), (b) consistency of attenuation measurements (Hounsfield units) across similar tissue, and (c) geometric accuracy of fiducial marker positions. The utility of these scanners in clinical IGS cases was tested. Results Five cadaveric specimens were scanned using each of the scanners. The translating-base, 8-slice CT scanner had spatially consistent Hounsfield units, and the image quality was subjectively good. However, because of movement variations during scanning, the geometric accuracy of fiducial marker positions was low. The fixed-base, fpVCT system had high spatial resolution, but the images were noisy and had spatially inconsistent attenuation measurements; while the geometric representation of the fiducial markers was highly accurate. Conclusion Two types of portable CT scanners were evaluated for otologic IGS. The translating-base, 8-slice CT scanner provided better image quality than a fixed-base, fpVCT scanner. However, the inherent error in three-dimensional spatial relationships by the translating-based system makes it suboptimal for otologic IGS use.

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Section: Discussionmentioning

confidence: 99%

Evaluation of portable CT scanners for otologic image-guided surgery

et al. 2011

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“…Furthermore, this technique may improve surgical results and have a future role in ablative procedures. [13][14][15] In the current study, patients were not charged for intraoperative CT scan evaluation. Otherwise, current procedural terminology codes, such as 70486 and 76380 would potentially be used for maxillary and limited CT scanning, respectively.…”

Section: Discussionmentioning

confidence: 99%

Intraoperative CT: A Teaching Tool for the Management of Complex Facial Fracture Fixation in Surgical Training

Ibrahim

Rabie

Lee

et al. 2011

Journal of Surgical Education

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“…The setup time required to rescan the patient, process the images, and often reregister the image-guided surgery system averages between 13 and 45 minutes. 25,27 The goal of intraoperative imaging, however, is to permit more successful minimally invasive surgeries, which should effectively reduce the patient's length of hospital stay and need for revision surgery. Hall and Truwit 5 found that the length of stay was 55% shorter in those resections performed with intraoperative MRI guidance.…”

Section: Disadvantages Of Intraoperative Imagingmentioning

confidence: 99%