scholarly journals Developing a Photoacoustic Whole-Breast Imaging System Based on the Synthetic Matrix Array

2020 ◽  
Vol 8 ◽  
Author(s):  
Guangjie Zhang ◽  
Wenzhao Li ◽  
Meng Yang ◽  
Changhui Li
Keyword(s):  
Breast Imaging ◽  
Imaging System ◽  
Laser Pulses ◽  
High Energy ◽  
Water Tank ◽  
Clinical Implementation ◽  
Array Probe ◽  
Supporting Plate ◽  
Linear Array Probe ◽  
Matrix Array

In this study, we reported a photoacoustic (PA) imaging system for whole-breast imaging. Similar to the traditional X-ray mammography, this system slightly compressed the breast by a water tank. The PA signal is acquired via scanning a long unfocused ultrasonic linear array probe over the breast top surface, and the expanded high-energy laser pulses illuminate the breast bottom through a transparent supporting plate. Scanning the unfocused transducer probe is equivalent to a synthetic two-dimensional (2D) matrix array, which significantly increased the field of view (FOV) via a much easier way and at a much lower cost. Our phantom results demonstrated that this system has a great potential for clinical implementation.

scholarly journals 3D ultrasound imaging of residual limbs with camera-based motion compensation

2019 ◽  
Author(s):  
Bryan Ranger ◽  
Micha Feigin ◽  
Xiang Zhang ◽  
Kevin Mattheus Moerman ◽  
Hugh Herr ◽  
...  
Keyword(s):  
Imaging System ◽  
Ultrasound Image ◽  
Image Data ◽  
Cost Effective ◽  
Motion Artifact ◽  
3D Ultrasound ◽  
Water Tank ◽  
Clinical Implementation ◽  
Prosthetic Socket ◽  
Human Limb

Ultrasound is a cost-effective, readily available, and non-ionizing modality for musculoskeletal imaging. Though some research groups have pursued methods that involve submerging the transducer and imaged body segment into a water bath, many limitations remain in regards to acquiring an unloaded volumetric image of an entire human limb in a fast, safe and adequately accurate manner. A 3D dataset of a limb is useful in several rehabilitative applications including biomechanical modeling of soft tissue, prosthetic socket design, monitoring muscle condition and disease progression, bone health, and orthopedic surgery. This paper builds on previous work from our group and presents the design, prototyping, and preliminary testing of a novel multi- modal imaging system for rapidly acquiring volumetric ultrasound imagery of human limbs, with a particular focus on residual limbs for improved prosthesis design. Our system employs a mecha- nized water tank setup to scan a limb with a clinical ultrasound transducer, and 3D optical imagery to track motion during a scan. The iterative closest point algorithm is utilized to compensate for motion and stitch the images into a final dataset. The results show preliminary 2D and 3D imaging of both a tissue-mimicking phantom and residual limbs. A volumetric error compares the ultrasound image data obtained to a previous MRI method. The results indicate potential for future clinical implementation. Con- cepts presented in this work could reasonably transfer to other imaging applications such as acoustic tomography, where motion artifact may distort image reconstruction.

A Novel Ultrasound Imaging System Based on Endoscopic Array Probe

2012 ◽  
Vol 588-589 ◽  
pp. 1148-1151
Author(s):  
Yun Xia Hao ◽  
Ying Li ◽  
Yi Wang ◽  
Xiao Dong Chen ◽  
Dao Yin Yu
Keyword(s):  
Ultrasound Imaging ◽  
Linear Array ◽  
Imaging System ◽  
Control Unit ◽  
Single Element ◽  
System A ◽  
Array Probe ◽  
Linear Array Probe ◽  
Array Ultrasound

A novel ultrasound imaging system based on endoscopic array probe is presented in this paper. The system utilizes an endoscopic linear-array probe instead of the conventional single-element probe to implement ultrasound scanning in vivo. For the system, a micro linear-array ultrasound probe sized Φ10mm×20mm is firstly designed. And then the excitation circuit, gating circuit and echo receiving and processing circuit are all designed cored by a center control unit FPGA. Finally the research of d/2 focusing algorithm is implemented on the basis of the system. After processed, the gray image of echoes reflected by a glass jar’s wall is obtained and shown on a computer.

Four-Dimensional Breast Imaging, Part II: Clinical Implementation and Validation of a Computer Imaging System for Breast Augmentation Planning

2011 ◽  
Vol 31 (8) ◽  
pp. 925-938 ◽  
Author(s):  
Craig N. Creasman ◽  
David Mordaunt ◽  
Tom Liolios ◽  
Catherine Chiu ◽  
Allen Gabriel ◽  
...  
Keyword(s):  
Breast Augmentation ◽  
Breast Imaging ◽  
Imaging System ◽  
Clinical Implementation

Validation of Wavelia Microwave Breast Imaging System Using Mammography Breast Density

2021 ◽  
Author(s):  
Yazan Abdoush ◽  
Angie Fasoula ◽  
Luc Duchesne ◽  
Julio D. Gil Cano ◽  
Brian M. Moloney ◽  
...  
Keyword(s):  
Breast Density ◽  
Breast Imaging ◽  
Imaging System ◽  
Microwave Breast Imaging

scholarly journals Concept of generation of extremely compressed high-energy electron bunches in several interfering intense laser pulses with tilted amplitude fronts

2012 ◽  
Vol 31 (1) ◽  
pp. 23-28 ◽  
Author(s):  
V.V. Korobkin ◽  
M.Yu. Romanovskiy ◽  
V.A. Trofimov ◽  
O.B. Shiryaev
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Intense Laser ◽  
High Energy Electron ◽  
Speed Of Light ◽  
Electron Bunches ◽  
Newton Equation ◽  
High Energies ◽  
Neutral Gas ◽  
Intense Laser Pulses

AbstractA new concept of generating tight bunches of electrons accelerated to high energies is proposed. The electrons are born via ionization of a low-density neutral gas by laser radiation, and the concept is based on the electrons acceleration in traps arising within the pattern of interference of several relativistically intense laser pulses with amplitude fronts tilted relative to their phase fronts. The traps move with the speed of light and (1) collect electrons; (2) compress them to extremely high density in all dimensions, forming electron bunches; and (3) accelerate the resulting bunches to energies of at least several GeV per electron. The simulations of bunch formation employ the Newton equation with the corresponding Lorentz force.

Acoustic Performance of Mesh Compression Paddles for a Multimodality Breast Imaging System

2014 ◽  
Vol 40 (7) ◽  
pp. 1503-1511 ◽  
Author(s):  
Gerald L. LeCarpentier ◽  
Mitchell M. Goodsitt ◽  
Sacha Verweij ◽  
Jie Li ◽  
Frederic R. Padilla ◽  
...  
Keyword(s):  
Breast Imaging ◽  
Imaging System ◽  
Mesh Compression ◽  
Acoustic Performance

Comparison of Stratification in a Water Tank and a PCM-Water Tank

2007 ◽  
Author(s):  
A. Castell ◽  
C. Sole´ ◽  
M. Medrano ◽  
M. Nogue´s ◽  
L. F. Cabeza
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Temperature Change ◽  
High Energy ◽  
Hot Water ◽  
The Other ◽  
High Energy Density ◽  
Water Tank ◽  
Charging And Discharging Processes ◽  
Change Material

Most of the storage systems available on the market use water as storage medium. Enhancing the storage performance is necessary to increase the performance of most systems. The stratification phenomenon is employed to improve the efficiency of storage tanks. Heat at an intermediate temperature, not high enough to heat up the top layer, can still be used to heat the lower, colder layers. There are a lot of parameters to study the stratification in a water tank such as the Mix Number and the Richardson Number among others. The idea studied here was to use these stratification parameters to compare two tanks with the same dimensions during charging and discharging processes. One of them is a traditional water tank and the other is a PCM-water (a water tank with a Phase Change Material). A PCM is good because it has high energy density if there is a small temperature change, since then the latent heat is much larger than the sensible heat. On the other hand, the temperature change in the top layer of a hot water store with stratification is usually small as it is held as close as possible at or above the temperature for usage. In the system studied the Phase Change Material is placed at the top of the tank, therefore the advantages of the stratification still remain. The aim of this work is to demonstrate that the use of PCM in the upper part of a water tank holds or improves the benefit of the stratification phenomenon.

Ongoing development of microwave breast imaging system components

2011 ◽  
Author(s):  
Mark Haynes ◽  
Line van Nieuwstadt ◽  
Steven Clarkson ◽  
John Stang ◽  
Clare Ward ◽  
...  
Keyword(s):  
Breast Imaging ◽  
Imaging System ◽  
System Components ◽  
Ongoing Development ◽  
Microwave Breast Imaging
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