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Proceedings Paper

Initial investigations of a special high-definition (Hi-Def) zoom capability in a new detector system for neuro-interventional procedures
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Paper Abstract

Real-time visualization of fine details ranging to 100 um or less in neuro-vascular imaging guided interventions is important. A separate high-resolution detector mounted on a standard flat panel detector (FPD) was previously reported. This device had to be rotated mechanically into position over the FPD for high resolution imaging. Now, the new detector reported here has a high definition (Hi-Def) zoom capability along with the FPD built into one unified housing. The new detector enables rapid switching, by the operator between Hi-Def and FPD modes. Standard physical metrics comparing the new Hi-Def modes with those of the FPD are reported, demonstrating improved imaging resolution and noise capability at patient doses similar to those used for the FPD. Semi-quantitative subjective studies involving qualitative clinician feedback on images of interventional devices such as a Pipeline Embolization Device (PED) acquired in both Hi-Def and FPD modes are presented. The PED is deployed in a patient specific 3D printed neuro-vascular phantom embedded inside realistic bone and with tissue attenuating material. Field-of-view (FOV), exposure and magnification were kept constant for FPD and Hi-Def modes. Static image comparisons of the same view of the PED within the phantom were rated by expert interventionalists who chose from the following ratings: Similar, Better, or Superior. Generally, the Hi-Def zoomed images were much preferred over the FPD, indicating the potential to improve endovascular procedures and hence outcomes using such a Hi-Def feature.

Paper Details

Date Published: 9 March 2018
PDF: 7 pages
Proc. SPIE 10573, Medical Imaging 2018: Physics of Medical Imaging, 1057365 (9 March 2018); doi: 10.1117/12.2294535
Show Author Affiliations
S. V. Setlur Nagesh, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)
A. Shankar, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)
J. Krebs, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)
J. Hinaman, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)
D. R. Bednarek, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)
S. Rudin, Toshiba Stroke and Vascular Research Ctr., Univ. at Buffalo (United States)


Published in SPIE Proceedings Vol. 10573:
Medical Imaging 2018: Physics of Medical Imaging
Joseph Y. Lo; Taly Gilat Schmidt; Guang-Hong Chen, Editor(s)

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