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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jensen, Jørgen Arendt
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2023Contrast-enhanced ultrasound imaging using capacitive micromachined ultrasonic transducerscitations
- 2022A Hand-Held 190+190 Row–Column Addressed CMUT Probe for Volumetric Imagingcitations
- 20213D printed calibration micro-phantoms for super-resolution ultrasound imaging validationcitations
- 2020Real Time Synthetic Aperture and Plane Wave Ultrasound Imaging with the Xilinx VERSAL™ SIMD-VLIW Architecturecitations
- 2019Imaging Performance for Two Row–Column Arrayscitations
- 2019188+188 Row–Column Addressed CMUT Transducer for Super Resolution Imagingcitations
- 2019CMUT Electrode Resistance Design: Modelling and Experimental Verification by a Row-Column Arraycitations
- 20193D Printed Calibration Micro-phantoms for Validation of Super-Resolution Ultrasound Imagingcitations
- 2018Probe development of CMUT and PZT row-column-addressed 2-D arrayscitations
- 2018Increasing the field-of-view of row–column-addressed ultrasound transducers: implementation of a diverging compound lenscitations
- 2018Design of a novel zig-zag 192+192 Row Column Addressed Array Transducer: A simulation study.citations
- 2017Transmitting Performance Evaluation of ASICs for CMUT-Based Portable Ultrasound Scanners
- 2017Real-time Implementation of Synthetic Aperture Vector Flow Imaging on a Consumer-level Tabletcitations
- 2017Output Pressure and Pulse-Echo Characteristics of CMUTs as Function of Plate Dimensionscitations
- 20163-D Vector Flow Using a Row-Column Addressed CMUT Arraycitations
- 20153-D Imaging Using Row–Column-Addressed Arrays With Integrated Apodization. Part I: Apodization Design and Line Element Beamformingcitations
- 20153-D Imaging Using Row–Column-Addressed Arrays With Integrated Apodization. Part I: Apodization Design and Line Element Beamformingcitations
- 20153-D Imaging Using Row-Column-Addressed Arrays With Integrated Apodization:Part II: Transducer Fabrication and Experimental Resultscitations
- 20153-D Imaging Using Row-Column-Addressed Arrays With Integrated Apodizationcitations
- 2012Multilayer piezoelectric transducer models combined with Field IIcitations
- 2011Performance Evaluation of a Synthetic Aperture Real-Time Ultrasound System
- 2010Simulation of High Quality Ultrasound Imaging
- 2009Parameter sensitivity study of a Field II multilayer transducer model on a convex transducercitations
- 2007Medical ultrasound imagingcitations
- 2004Preliminary In-Vivo Evaluation of Convex Array Synthetic Aperture Imagingcitations
- 2003Delay generation methods with reduced memory requirementscitations
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article
A Hand-Held 190+190 Row–Column Addressed CMUT Probe for Volumetric Imaging
Abstract
This paper presents the design, fabrication, and characterization of a 190+190 row-column addressed (RCA) capacitive micromachined ultrasonic transducer (CMUT) array integrated in a custom hand-held probe handle. The array has a designed 4.5 MHz center frequency in immersion and a pitch of 95 μm which corresponds to ≈ λ/4. The array has a 2.14 × 2.14 cm2 footprint including an integrated apodization scheme to reduce ghost echoes when performing ultrasound imaging. The array was fabricated using a combination of fusion and anodic bonding, and a deposit, remove, etch, multistep (DREM) etch to reduce substrate coupling and improve electrode conductivity. The transducer array was wire-bonded to a rigid-flex printed circuit board (PCB), encapsulated in room temperature vulcanizing (RTV) silicone polymer, electromagnetic interference (EMI) shielded, and mounted in a 3D-milled PPSU probe handle. The probe was characterized using the SARUS experimental scanner and 3D volumetric imaging was demonstrated on scatter and wire phantoms. The imaging depth was derived from tissue mimicking phantom measurements (0.5 dB MHz-1 cm-1 attenuation) by estimating the SNR at varying depths. For a synthetic aperture imaging sequence with 96+96 emissions the imaging depth was 3.6 cm. The center frequency measured from the impulse response spectra in transmit and pulse-echo was 6.0 ± 0.9 MHz and 5.3 ± 0.4 MHz, and the corresponding relative bandwidths were 62.8 ± 4.5 % and 86.2 ± 10.4 %. The fabrication process showed clear improvement in relative receive sensitivity and transmit pressure uniformity compared to earlier silicon-on-insulator (SOI) based designs. However, at the same time it presented yield problems resulting in only around 55 % elements with a good response.