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Janjic, Jovana (author), Tan, M. (author), Daeichin, V. (author), Noothout, E.C. (author), Chen, C. (author), Chen, Z. (author), Chang, Z.Y. (author), Beurskens, Robert H.S.H. (author), van Soest, G. (author), van der Steen, A.F.W. (author), Verweij, M.D. (author), Pertijs, M.A.P. (author), de Jong, N. (author)
Intravascular ultrasound is an imaging modality used to visualize atherosclerosis from within the inner lumen of human arteries. Complex lesions like chronic total occlusions require forward-looking intravascular ultrasound (FL-IVUS), instead of the conventional side-looking geometry. Volumetric imaging can be achieved with 2D array...
journal article 2018
document
Chen, C. (author), Chen, Z. (author), Bera, Deep (author), Raghunathan, S.B. (author), Shabanimotlagh, M. (author), Noothout, E.C. (author), Chang, Z.Y. (author), Ponte, Jacco (author), Prins, Christian (author), Vos, H.J. (author), Bosch, J.G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
This paper presents a power-and area-efficient front-end application-specific integrated circuit (ASIC) that is directly integrated with an array of 32 × 32 piezoelectric transducer elements to enable next-generation miniature ultrasound probes for real-time 3-D transesophageal echocardiography. The 6.1 × 6.1 mm<sup>2</sup> ASIC, implemented...
journal article 2017
document
Chang, C. (author), Borgart, A. (author), Chen, A. (author), Hendriks, M.A.N. (author)
This paper proposes an efficient and reliable topology optimization method that can obtain a black and white solution with a low objective function value within a few tens of iterations. First of all, a transformation of variables technique is adopted to eliminate the constraints on the design variables. After that, the optimization problem is...
journal article 2014
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Chen, C. (author), Chen, Z. (author), Bera, Deep (author), Noothout, E.C. (author), Chang, Z.Y. (author), Tan, M. (author), Vos, H.J. (author), Bosch, Johan G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
This paper presents a front-end application-specified integrated circuit (ASIC) integrated with a 2-D PZT matrix transducer that enables in-probe digitization with acceptable power dissipation for the next-generation endoscopic and catheter-based 3-D ultrasound imaging systems. To achieve power-efficient massively parallel analog-to-digital...
journal article 2018
document
D'Urbino, Michele (author), Chen, C. (author), Chen, Z. (author), Chang, Z.Y. (author), Ponte, Jacco (author), Lippe, Boris (author), Pertijs, M.A.P. (author)
This paper presents a power- and area-efficient approach to digitizing the echo signals received by piezoelectric transducer elements, commonly used for ultrasound imaging. This technique utilizes such elements not only as sensors but also as the loop filter of an element-level δσ analog to digital converter (ADC). The receiver chain is thus...
journal article 2018
document
Tan, M. (author), Chen, C. (author), Chen, Z. (author), Janjic, Jovana (author), Daeichin, V. (author), Chang, Z.Y. (author), Noothout, E.C. (author), van Soest, G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
This paper presents an area- and power-efficient application-specified integrated circuit (ASIC) for 3-D forward-looking intravascular ultrasound imaging. The ASIC is intended to be mounted at the tip of a catheter, and has a circular active area with a diameter of 1.5 mm on the top of which a 2-D array of piezoelectric transducer elements is...
journal article 2018
document
Chen, C. (author), Chen, Z. (author), Chang, Z.Y. (author), Pertijs, M.A.P. (author)
This paper presents a power- and area-efficient 9-channel LNA array for piezoelectric ultrasound transducers to enable real-time 3D imaging with miniature endoscopic and catheter-based probes. In view of the relatively low impedance of piezoelectric transducers, the LNA is implemented as a capacitive feedback voltage amplifier, rather than a...
conference paper 2015
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