Three-dimensional Intraoperative Ultrasound [Neurosurgery Wiki]

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====== Three-dimensional Intraoperative Ultrasound ======

A dedicated commercial system for navigated [[Three-dimensional Intraoperative Ultrasound]] allowing to acquire 3D ultrasound (US) volumes by combining a stack of 2D US scans with known spatial positions was first presented in [[2000]] by Gronningsaeter et al.,
((Gronningsaeter A, Kleven A, Ommedal S, et al.
SonoWand, an ultrasound-based neuronavigation
system. Neurosurgery. 2000;47:1373-1379 [discussion: 1379-1380].))
and applied to different cranial pathologies
((Unsgaard G, Ommedal S, Rygh OM, Lindseth F.
Operation of arteriovenous malformations assisted by stereoscopic navigation-controlled display
of preoperative magnetic resonance angiography
and intraoperative ultrasound angiography. Oper
Neurosurg. 2005;56:281-290.))
((Unsgaard G, Selbekk T, Brostrup Muller T, et al.
Ability of navigated 3D ultrasound to delineate
gliomas and metastases–comparison of image
interpretations with histopathology. Acta Neurochir
(Wien). 2005;147:1259-1269 [discussion: 1269].))

===== Three-dimensional Intraoperative Ultrasound for intracranial tumor surgery =====

[[Three-dimensional Intraoperative Ultrasound for intracranial tumor surgery]]


====With preoperative rotational digital subtraction angiography====
Intraoperative coregistration of 3D intraoperative ultrasound data with preoperative [[3D Rotational Angiography]] is possible with high accuracy. It allows the immediate visualization of vessels beyond the microscopic field, as well as parallel assessment of blood velocity, aneurysm and vascular tree configuration. Although spatial resolution is lower than for standard angiography, the method provides an excellent vascular overview, advantageous interpretation of 3D-ioUS and immediate intraoperative feedback of the vascular status. A prerequisite for understanding vascular intraoperative ultrasound is image quality and a successful match with preoperative rotational digital subtraction angiography
((Podlesek D, Meyer T, Morgenstern U, Schackert G, Kirsch M. Improved
Visualization of Intracranial Vessels with Intraoperative Coregistration of
Rotational Digital Subtraction Angiography and Intraoperative 3D Ultrasound. PLoS
One. 2015 Mar 24;10(3):e0121345. doi: 10.1371/journal.pone.0121345. eCollection
2015. PubMed PMID: 25803318.
)).

===== Three-dimensional intraoperative ultrasound for intradural spinal tumor =====

[[Three-dimensional intraoperative ultrasound for intradural spinal tumor]].