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Biopsy, Ultrasound, Image manipulation / Reconstruction, Breast, Image registration
E. Giannotti1, J. Nori2, D. Abdulcadir3, G. Bicchierai2, L. Forzoni2, S. de Beni4, S. D'Onofrio2, G. Scaperrotta5; 1Florence/IT, 2Firenze/IT, 3Florence, Florence/IT, 4Genoa/IT, 5Milano/IT
In this preliminary study,
the Virtual Biopsy tool facilitated core biopsy needle insertion both in ex vivo and in vivo tests,
especially for less experienced operators in US guided core biopsy procedures.
With its graphical representation of the needle tip insertion point and the planning of the path within the area to be sampled,
it represented a valuable tool for improved practical confidence.
The confidence is even increased by the possibility to monitor in real time the tissue stiffness with elastosonography and the hemodynamics of the lesion and surrounding areas using Doppler technologies.
Especially for novices,
the Intelligent Positioning viewfinder feature enables an intuitive pointing of the target to be biopsied referring to the needle tip point of view.
The MCS enabled proper fusion imaging between the real-time 2D scans and the 3DPan volumetric acquisitions,
despite patients’ voluntary and involuntary movements .
MCS innovative technology corrected subject’s movements,
in order to simultaneously increase his/her and the sonographer’s comfort and to ease US scanning procedures.
Virtual Navigator 3DPan technology showed to be a reliable and easy tool that fused 3D US breast anatomical data with bi-dimensional US scans.
Pulsed Wave Doppler and Elastosonography evaluations were performed while navigating within the 3DPan volume,
in order to respectively analyze the hemodynamic and stiffness characteristics of the examined area.
Virtual Navigator 3DPan tool worked in the breast and axilla areas as a sort of “target positioning system”.
Custom targeting of lesions and/or suspected areas allowed the operator to easily identify and spatially localize the targets,
navigating within the imaging given by the 3D Panoramic view.
The electromagnetically tracked free-hand acquisition enabled the operator to cover all the areas of interest.
The possibility to acquire the US volumes with one large width array probe and the capability to navigate within the acquired 3D glued volume with another more ergonomic probe without any re-synchronization procedure between 3D and 2D views was a particularly appreciated feature.
The extended duration of the examination time for the 3DPan acquisition was balanced by the increased level of confidence and the easier navigation within the 3D US volume for both the scanning operator and the Medical Doctor image reviewer.
For all the patients involved in the in vivo tests,
a satisfactory visual matching between the 3DPan volume and the relative 2D US was obtained.