Two-dimensional (2-D) arrays offer volumetric imaging capabilities without the need for
probe translation or rotation. A sparse array with elements seeded in a tapering spiral …

To be able to describe more precisely the behavior of a real-time 3-D ultrasound system with
either a dense array or various sparse designs, experimental data from a 2-D fully …

Volumetric medical ultrasound imaging currently provides either high resolution or high
frame rates. We propose a sparse array probe with only 256 elements that are density …

An ultrasound sparse array consists of a sparse distribution of elements over a 2-D aperture.
Such an array is typically characterized by a limited number of elements, which in most …

The current high interest in 3-D ultrasound imaging is pushing the development of 2-D
probes with a challenging number of active elements. The most popular approach to limit …

Transducer arrays for 3D imaging are characterized by elements distributed over a 2D
surface. The dimensions of each element are typically one half-wavelength in both x-and y …

One of the most promising techniques for limiting complexity for real-time 3-D ultrasound
systems is to use sparse 2-D layouts. For a given number of channels, optimization of …

Sparse spiral phased arrays are advantageous for many emerging air-coupled ultrasonic
applications, since grating lobes are prevented without being constrained to the half …

Sparse arrays have been studied mainly to reduce the large numbers of elements in 2-D
arrays. However, they can also provide an effective means of miniaturizing ultrasound 1-D …

Piezoelectric micromachined ultrasonic transducers (PMUT) are promising elements to
fabricate a two-dimensional (2D) array with a pitch small enough (approximately half …