Torsion Design Example: Inverted Tee Bent Cap

This paper provides a practical example of the torsion design of an inverted tee bent cap of a three-span bridge. A full torsional design following the guidelines of the ACI 318-19 building code is carried out and the results are compared with the outcomes from CSA-A23.3-04, AASHTO-LRFD-17, and EN 1992-1-1:2004 codes. Then, a summary of the...

Multiline 3D beamforming using micro-beamformed datasets for pediatric transesophageal echocardiography

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...

A Front-End ASIC with Receive Sub-array Beamforming Integrated with a 32 × 32 PZT Matrix Transducer for 3-D Transesophageal Echocardiography

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 mm² ASIC, implemented...

A mixed-signal multiplexing system for cable-count reduction in ultrasound probes

3D Transesophageal echocardiography using a fast-rotating transducer

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...

Verruiming van de toegangsgeul naar Tees Port

In deel A wordt beschreven hoe de benodigde geulbreedte kan worden bepaald. De benodigde geulbreedte is bepaald met behulp van een fast-time simulatie model: SHIPMA . SHIPMA is een fast-time simulatieprogramma, waarmee gesimuleerd wordt hoe goed een schip de gewenste route kan afleggen onder verschillende omstandigheden. De geulbreeedte die het...