Elevation performance of 1.25D and 1.5D transducer arrays

Wildes, Douglas; Chiao, Richard Y.; Daft, C.M.W.; Rigby, K.W.; Smith, L.S.; Thomenius, Kai E.

doi:10.1109/58.655628

Cited by 98 publications

(37 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Multi-row transducer arrays are used to provide a thin image slice and good contrast resolution over an extended depth of field [6]. There are two implementation strategies: So-called "1.5D arrays" have electronic beamforming in both azimuth and elevation, allowing dynamic control of the elevation aperture and focus.…”

Section: Slice Thickness Controlmentioning

confidence: 99%

Advanced ultrasound probes for medical imaging

Wildes¹,

Smith²

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

Section: Slice Thickness Controlmentioning

confidence: 99%

Advanced ultrasound probes for medical imaging

Wildes¹,

Smith²

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

“…The goal of the beamformer is to create a narrow and uniform beam with low sidelobes over a depth as long as possible. Among the already proposed imaging methods and techniques are: elevation focusing (1.25D, 1.5D and 1.75D arrays) (Wildes et al, 1997), beam steering, synthetic apertures, 2D and sparse arrays, configurable arrays, parallel beamforming, micro-beamformers, rectilinear scanning, coded excitation, phased subarray processing, phase aberration correction, and others ( The most common complication introduced by these methods is a significant increase in channel count. Generating narrow ultrasonic wave beams in biological media by multielement probes, built as matrices of elementary piezoceramic transducers in a rectangular configuration, can be realised by using transducers having spherical surfaces, ultrasonic lenses, mechanical elements (e.g.…”

Section: Introductionmentioning

confidence: 99%

Narrow Beam Ultrasonic Transducer Matrix Model for Projection Imaging of Biological Media

Opieliński¹,

Gudra²,

Pruchnicki³

2010

Archives of Acoustics

View full text Add to dashboard Cite

The following paper presents an idea of minimising the number of connections of individual piezoelectric transducers in a row-column multielement passive matrix system used for imaging of biological media structure by means of ultrasonic projection. It allows to achieve significant directivity with acceptable input impedance decrease. This concept was verified by designing a model of a passive ultrasonic matrix consisting of 16 elementary piezoceramic transducers, with electrode attachments optimised by means of electronic switches in rows and columns. Distributions of acoustic field generated by the constructed matrix model in water and results of the calculations conformed well.

show abstract

“…These are evaluated using onaxis and off-axis beamplots. The −6 dB beamwidth is an indicator of the resolution of the system and the −20dB beamwidth is an indicator of contrast [5]. The −40 dB beamwidth and the grating lobe levels can be used as indicators of the clutter level in the image.…”

Section: Design Objectivesmentioning

confidence: 99%

“…The beam is well focused in elevation at this depth, but diverges at depths away from the focus degrading image quality. Multi-row arrays such as 1.25-D arrays have been proposed to reduce the slice thickness, but elevation focusing remains static [5,6]. 1.5D, 1.75-D and 2-D arrays can produce a thinner slice thickness since dynamic elevation focusing is possible.…”

Section: Introductionmentioning

confidence: 99%

2-D array for 3-D ultrasound imaging using synthetic aperture techniques

Daher

Yen

2006

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

A 2-D array of 256 × 256 = 65,536 elements, with total area 4 × 4 = 16 cm 2 , serves as a flexible platform for developing acquisition schemes for 3-D rectilinear ultrasound imaging at 10 MHz using synthetic aperture techniques. This innovative system combines a simplified interconnect scheme and synthetic aperture techniques with a 2-D array for 3-D imaging. A row-column addressing scheme is used to access different elements for different transmit events. This addressing scheme is achieved through a simple interconnect, consisting of one top, one bottom single layer flex circuits, which, compared to multi-layer flex circuits, are simpler to design, cheaper to manufacture and thinner so their effect on the acoustic response is minimized. We present three designs that prioritize different design objectives: volume acquisiton time, resolution, and sensitivity, while maintaining acceptable figures for the other design objectives. For example, one design overlooks time acquisition requirements, assumes good noise conditions, and optimizes for resolution, achieving −6 dB and −20 dB beamwidths of less than 0.2 and 0.5 millimeters, respectively, for an F/2 aperture. Another design can acquire an entire volume in 256 transmit events, with −6dB and −20 dB beamwidths in the order of 0.4 and 0.8 millimeters, respectively.

show abstract

Elevation performance of 1.25D and 1.5D transducer arrays

Cited by 98 publications

References 23 publications

Advanced ultrasound probes for medical imaging

Advanced ultrasound probes for medical imaging

Narrow Beam Ultrasonic Transducer Matrix Model for Projection Imaging of Biological Media

2-D array for 3-D ultrasound imaging using synthetic aperture techniques

Contact Info

Product

Resources

About