Name: an experimental protocol for assessing the performance of new ultrasound probes based on cmut technology in application to brain imaging
Uploaded: 2017-09-24T13:00:00
Description: Watch this Scientific Journal Video about An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging at JoVE.com

Este trabajo ha sido parcialmente financiado por los gobiernos nacionales y la Unión Europea a través del proyecto ENIAC JU DeNeCoR bajo la beca número acuerdo 324257. Los autores desean agradecer al Prof. Giovanni Magenes, Prof. Piero Tortoli y Dr. Giosuè Caliano su valioso apoyo, supervisión y perspicaces observaciones que hicieron posible este trabajo. También agradecemos a Prof. Egidio D'Angelo y su grupo (laboratorio de BCC), junto con la Fondazione Istituto Neurologico C. Mondino, para proporcionar el movimiento de seguimiento e instrumentación del Señor y a Giancarlo Germani para adquisiciones de Señor. Por último, nos gustaría agradecer a Dr. Nicoletta Caramia, Dr. Alessandro Dallai y Sra. Barbara Mauti por su valioso apoyo técnico y el Sr. Walter Volpi para proporcionar el cerebro bovino.

todas las muestras biológicas se muestra en este video han sido adquiridas a través de la cadena de suministro de alimentos. Estos ejemplares han sido tratados con arreglo a las normas éticas y de seguridad de las instituciones involucradas.
 Nota: el diagrama en la figura 4 resume las principales 8 etapas del presente Protocolo. Etapas 1 a 4 incluyen actividades iniciales, a llevarse a cabo sólo una vez antes del comienzo de la adquisición de la imagen de ...

<ol>
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Varios trabajos han sido presentados en la literatura que describe técnicas que son similares o relacionados con el protocolo presentado. Estas técnicas también se basan en el uso de objetivos realistas, incluyendo animal fijo o cerebros de cadáveres, pero se conciben principalmente para la prueba de los métodos de registro digital de varias clases.
El protocolo descrito aquí, sin embargo, tiene el propósito específico de prueba sondas de Estados Unidos en diferentes configuraciones en...

<table border="0" cellpadding="0" cellspacing="0" width="925">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">ULA-OP</td>
			<td style="width:167px;">University of Florence</td>
			<td style="width:104px;">N/A</td>
			<td style="width:415px;">Ultrasound imaging research system</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">3D imaging piezeoelectric probe</td>
			<td style="width:167px;">Esaote s.p.a.</td>
			<td style="width:104px;">9600195000</td>
			<td>Mechanically-swept 3D ultrasound probe, model BL-433</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Linear-array piezoelectric probe</td>
			<td style="width:167px;">Esaote s.p.a.</td>
			<td style="width:104px;">122001100</td>
			<td>Ultrasound linear array probe, model LA-533</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">CMUT probe</td>
			<td style="width:167px;">University Roma Tre</td>
			<td style="width:104px;">N/A</td>
			<td>Ultrasound linear array probe based on CMUT technology</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">MAGNETOM Skyra 3T MR scanner</td>
			<td style="width:167px;">Siemens Healthcare</td>
			<td style="width:104px;">N/A</td>
			<td>MR scanner</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Head coil</td>
			<td style="width:167px;">Siemens Healthcare</td>
			<td style="width:104px;">N/A</td>
			<td>32-channel head coil for MR imaging</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">NDI Polaris Vicra</td>
			<td style="width:167px;">NDI Medical</td>
			<td style="width:104px;">8700335001</td>
			<td>Optical motion tracking system</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Pointer tool</td>
			<td style="width:167px;">NDI Medical</td>
			<td style="width:104px;">8700340</td>
			<td>Passive pointer tool with 4 reflecting markers</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Clamp-equipped tool</td>
			<td style="width:167px;">NDI Medical</td>
			<td style="width:104px;">8700399</td>
			<td>Rigid body with 4 reflecting markers and a clamp to be connected to the US probe handle</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Bovine brain</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Brain of an adult bovine, from food suppliers</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Formalin solution</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>10% buffered formalin solution for bovine brain fixation - CAUTION, formalin is a toxic chemical substance and must be handled with care; specific regulations may also apply (see for instance US OSHA Standard 1910.1048 App A)</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Plastic container for anatomical parts</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Cilindrical plastic container with lid</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Glass spheres</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>3mm diameter spheres of Flint glass</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Agar</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>30 g, for phantom preparation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Glycerine</td>
			<td style="width:167px;">AEFFE Farmaceutici</td>
			<td style="width:104px;">A908005248</td>
			<td>100 g, for phantom preparation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Distilled water</td>
			<td style="width:167px;">Solbat Gaysol</td>
			<td style="width:104px;">8027391000015</td>
			<td>870 g, for phantom preparation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Beaker</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Beaker used for the diluition of glycerine and agar in distilled water</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Lysoform</td>
			<td style="width:167px;">Lever</td>
			<td style="width:104px;">8000680500014</td>
			<td>A benzalkonium chloride and water solution was used for the agar phantom preservation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Polystyrene mannequin head</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Polyestirene model which was cutted and used to design the configuration of spheres&#39;patterns</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Green tissue marking dye for histology</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Colour used to mark the glass spheres&#39; positions on the bovine brain surface</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Yellow enamel</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Enamel used to colour the glass spheres implanted in the agar phantom</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Water tank</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>50x50x30 cm plastic tank filled degassed water up to a 15cm height&#160;</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Mechanical arm</td>
			<td style="width:167px;">Esaote s.p.a.</td>
			<td style="width:104px;">N/A</td>
			<td>Mechanical arm clamped to the water tank border and used to held the probe in fixed positions</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Plate of synthetic resin</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Plate used as a support for the bovine brain positioning in the water tank</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Sewing threads</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Sewing thread segments used to immobilize the brain on the resin plate</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Adhesive tape</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Adhesive tape used to fix the sewing thread extremities onto the resin plate</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Plastic food container</td>
			<td style="width:167px;">N/A</td>
			<td style="width:104px;">N/A</td>
			<td>Sealed food container used for the agar phantom</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Notebook</td>
			<td style="width:167px;">Lenovo</td>
			<td style="width:104px;">Z50-70</td>
			<td>Lenovo&#160; Z50-70, Intel(R) Core i7-4510U @ 2.0 GHz, 8 GB RAM</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Workstation</td>
			<td style="width:167px;">Dell Inc.</td>
			<td style="width:104px;">T5810</td>
			<td>Intel(R) Xeon(R) CPU E3-1240v3 @ 3.40 GHz, 16 GB RAM</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Matlab</td>
			<td style="width:167px;">The MathWorks</td>
			<td style="width:104px;">R2013a</td>
			<td>Software tool, used for space transformation computation and 3D reconstruction from image planes</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">Paraview</td>
			<td style="width:167px;">Kitware Inc.</td>
			<td style="width:104px;">v. 4.4.1</td>
			<td>Open-source software for 3D image processing and visualization</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">NDI Toolbox - ToolTracker Utility</td>
			<td style="width:167px;">NDI Medical</td>
			<td style="width:104px;">v. 4.007.007</td>
			<td>Software for marker position visualization and tracking in the NDI Polaris Vicra measurement volume</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">C++ data-logging software</td>
			<td style="width:167px;">NDI Medical</td>
			<td style="width:104px;">v. 4.007.007</td>
			<td>Software for marker position recording on a text log file</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:240px;">ULA-OP software&#160;</td>
			<td style="width:167px;">University of Florence</td>
			<td style="width:104px;">N/A</td>
			<td>Software for real-time display and control of the ULA-OP system</td>
		</tr>
	</tbody>
</table>

an experimental protocol for assessing the performance of new ultrasound probes based on cmut technology in application to brain imaging

La posibilidad de realizar una evaluación temprana y repetible de resultados de la proyección de imagen es fundamental en el diseño y proceso de desarrollo de nuevo ultrasonido (US) las puntas de prueba. En particular, un análisis más realista con objetivos de aplicación específica puede ser muy valioso para evaluar el rendimiento esperado de las sondas de Estados Unidos en su campo clínico potencial de aplicación.
El protocolo experimental presentado en este trabajo fue deliberadamente diseñado para proporcionar un procedimiento de evaluación de la aplicación específica para recién desarrollado nos prototipos basados en la tecnología capacitiva transductor ultrasónico micro (CMUT) en relación con la punta de prueba proyección de imagen del cerebro.
El protocolo combina el uso de un cerebro bovino fijado en formol como el imagen objetivo, que asegura el realismo y capacidad de repetición de los procedimientos y de técnicas de Neuronavegación de Neurocirugía. La sonda de los Estados Unidos de hecho está conectada a un sistema que adquiere datos de posición y permite la superposición de imágenes de Estados Unidos para hacer referencia a imágenes de resonancia magnética (de Sr.) del cerebro de seguimiento del movimiento. Esto proporciona un medio para los expertos humanos para llevar a cabo una evaluación cualitativa visual de la sonda de los Estados Unidos de rendimiento y comparar adquisiciones realizadas con diversas puntas de prueba. Por otra parte, el protocolo basa en el uso de un sistema completo y abierto de investigación y desarrollo para la adquisición de imágenes de Estados Unidos, es decir, el escáner de ultrasonido avanzado abrir plataforma (ULA-OP).
El manuscrito describe en detalle los instrumentos y procedimientos involucrados en el protocolo, en particular de la calibración, adquisición de imágenes y registro de imágenes de Estados Unidos y el Señor. Los resultados obtenidos prueban la eficacia del protocolo general presentado, que está totalmente abierto (dentro de los límites de la instrumentación involucrada), repetible y cubre todo el conjunto de las actividades de adquisición y procesamiento de imágenes de Estados Unidos.

El resultado principal alcanzado mediante el protocolo descrito es la validación experimental de un procedimiento de evaluación eficaz y repetible para el 2D y capacidades de proyección de imagen 3D nos sonda prototipos basados en tecnología CMUT, en la aplicación prospectiva para el cerebro proyección de imagen. Después de implementar todos los pasos del protocolo descrito, un experto puede aplicar entonces las funciones de software de visualización (por ejemplo, corte g...

Watch this Scientific Journal Video about An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging at JoVE.com

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging

El desarrollo de nuevas sondas de ultrasonido (US) basada en tecnología capacitiva transductor ultrasónico micro (CMUT) requiere una temprana evaluación realista de las capacidades de la proyección de imagen. Se describe un protocolo experimental repetible para la adquisición de la imagen de Estados Unidos y comparación con imágenes de resonancia magnética, utilizando un cerebro bovino ex vivo como un objetivo de proyección de imagen.

Un protocolo Experimental para evaluar el desempeño de nuevas sondas de ultrasonido basado en la tecnología CMUT en aplicación a la proyección de imagen de cerebro

The possibility to perform an early and repeatable assessment of imaging performance is fundamental in the design and development process of new ...

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