Searched for: subject%3A%22echocardiography%22
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Simoes dos Santos, D. (author)
Cardiovascular diseases stand as the leading cause of death worldwide. Cardiovascular diseases are a group of disorders of the heart and blood vessels, such as atherosclerosis, congenital heart diseases, rheumatic heart diseases, and arrhythmias. Early detection of cardiovascular issues is imperative for effective treatment, and the...
doctoral thesis 2024
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Hopf, Y.M. (author), Simoes dos Santos, D. (author), Ossenkoppele, Boudewine W. (author), Noothout, E.C. (author), Chang, Z.Y. (author), Chen, Chao (author), Vos, H.J. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
This article presents an application-specific integrated circuit (ASIC) for catheter-based 3-D ultrasound imaging probes. The pitch-matched design implements a comprehensive architecture with high-voltage (HV) transmitters, analog front ends, hybrid beamforming analog-To-digital converters (ADCs), and data transmission to the imaging system....
journal article 2024
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Simoes dos Santos, D. (author), Ossenkoppele, B.W. (author), Hopf, Y.M. (author), Soozande, Mehdi (author), Noothout, E.C. (author), Vos, H.J. (author), Bosch, Johan G. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author), de Jong, N. (author)
Objective: Described here is the development of an ultrasound matrix transducer prototype for high-frame-rate 3-D intra-cardiac echocardiography. Methods: The matrix array consists of 16 × 18 lead zirconate titanate elements with a pitch of 160 µm × 160 µm built on top of an application-specific integrated circuit that generates transmission...
journal article 2024
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Wei, Luxi (author), Wahyulaksana, G. (author), Boni, Enrico (author), Noothout, E.C. (author), Tortoli, Piero (author), van der Steen, A.F.W. (author), de Jong, N. (author), Verweij, M.D. (author), Vos, H.J. (author)
Volumetric echocardiography can potentially give a more complete picture of cardiac dynamics than its two-dimensional (2D) counterpart. Current clinical volumetric imaging probes have relatively low frame rates, and often require ECG gating to stitch together an entire volume. This makes measuring fast dynamics of the heart as well as imaging...
conference paper 2023
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Hopf, Y.M. (author), Ossenkoppele, Boudewine W. (author), Soozande, Mehdi (author), Noothout, E.C. (author), Chang, Z.Y. (author), Chen, Chao (author), Vos, H.J. (author), Bosch, Johan G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
In this article, an application-specific integrated circuit (ASIC) for 3-D, high-frame-rate ultrasound imaging probes is presented. The design is the first to combine element-level, high-voltage (HV) transmitters and analog front-ends, subarray beamforming, and in-probe digitization in a scalable fashion for catheter-based probes. The...
journal article 2022
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Voorneveld, J.D. (author), Keijzer, L.B.H. (author), Strachinaru, Mihai (author), Bowen, Daniel J. (author), Mutluer, Ferit O. (author), van der Steen, A.F.W. (author), Ten Cate, Folkert (author), de Jong, N. (author), Vos, H.J. (author), Van den Bosch, Annemien E. (author), Bosch, Johan G. (author)
High-frame-rate (HFR) echo-particle image velocimetry (echoPIV) is a promising tool for measuring intracardiac blood flow dynamics. In this study, we investigate the optimal ultrasound contrast agent (UCA: SonoVue) infusion rate and acoustic output to use for HFR echoPIV (PRF = 4900 Hz) in the left ventricle (LV) of patients. Three infusion...
journal article 2021
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Grandia, Leander (author)
Atrial Fibrillation (AF) is a common type of arrhythmia, characterized by rapid and irregular contraction of the atria. Irregular contraction of the atria is caused by erroneous electrical activation, originating from the tissue around the Pulmonary Veins (PV) in the Left Atrium (LA). Catheter-based treatment of AF includes ablation of the...
master thesis 2019
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Jong, Lynn-Jade (author)
Transvenous lead extractions (TLEs) are minimally invasive procedures in which pacing or implantable cardioverter defibrillator leads are extracted under guidance of 2D X-ray fluoroscopy. Despite the fact that fluoroscopy is currently the gold standard for TLEs, it has several limitations in terms of visualization of anatomical structures, areas...
master thesis 2019
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Bera, D. (author), Van Den Adel, Franc (author), Radeljic-Jakic, Nikola (author), Lippe, Boris (author), Soozande, M. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author), Kruizinga, P. (author), Daeichin, V. (author), Vos, H.J. (author), van der Steen, A.F.W. (author), Bosch, Johan G. (author), de Jong, N. (author)
We describe a 3-D multiline parallel beamforming scheme for real-time volumetric ultrasound imaging using a prototype matrix transesophageal echocardiography probe with diagonally diced elements and separated transmit and receive arrays. The elements in the smaller rectangular transmit array are directly wired to the ultrasound system. The...
journal article 2018
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Daeichin, V. (author), Bera, D. (author), Raghunathan, S.B. (author), Shabanimotlagh, M. (author), Chen, Z. (author), Chen, C. (author), Noothout, E.C. (author), Vos, H.J. (author), Pertijs, M.A.P. (author), de Jong, N. (author), Verweij, M.D. (author)
This paper presents the design, fabrication and characterization of a miniature PZT-on-CMOS matrix transducer for real-time pediatric 3-dimensional (3D) transesophageal echocardiography (TEE). This 3D TEE probe consists of a 32 × 32 array of PZT elements integrated on top of an Application Specific Integrated Circuit (ASIC). We propose a...
journal article 2018
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Bera, D. (author), Raghunathan, S.B. (author), Chen, C. (author), Chen, Z. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author), Daeichin, V. (author), Vos, H.J. (author), van der Steen, A.F.W. (author), de Jong, N. (author), Bosch, J.G. (author)
Until now, no matrix transducer has been realized for 3D transesophageal echocardiography (TEE) in pediatric patients. In 3D TEE with a matrix transducer, the biggest challenges are to connect a large number of elements to a standard ultrasound system, and to achieve a high volume rate (>200 Hz). To address these issues, we have recently...
journal article 2018
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Vos, H.J. (author), van Dalen, Bas M. (author), Heinonen, Ilkka (author), Bosch, Johan G. (author), Sorop, Oana (author), Duncker, Dirk J. (author), van der Steen, A.F.W. (author), de Jong, N. (author)
Cardiac muscle stiffness can potentially be estimated non-invasively with shear wave elastography. Shear waves are present on the septal wall after mitral and aortic valve closure, thus providing an opportunity to assess stiffness in early systole and early diastole. We report on the shear wave recordings of 22 minipigs with high-frame-rate...
journal article 2017
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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
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Van Neer, P.L.M.J. (author), Danilouchkine, M.G. (author), Verweij, M.D. (author), Demi, L. (author), Voormolen, M.M. (author), Van der Steen, A.F.W. (author), De Jong, N. (author)
In medical ultrasound, fundamental imaging (FI) uses the reflected echoes from the same spectral band as that of the emitted pulse. The transmission frequency determines the trade-off between penetration depth and spatial resolution. Tissue harmonic imaging (THI) employs the second harmonic of the emitted frequency band to construct images....
journal article 2011
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Karavides, T. (author), Leung, K.Y.E. (author), Paclik, P. (author), Hendriks, E. (author), Bosch, J.G. (author)
conference paper 2010
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Nathanail, K. (author)
Echocardiography is a diagnostic modality which is widely used in cardiology, using ultrasound to image the living heart and assess its physiological function. Three-dimensional echocardiography surpasses the visual limitations of conventional echocar-diography, offering a three-dimensional perspective of the heart. Traditional techniques for...
master thesis 2008
Searched for: subject%3A%22echocardiography%22
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