Frequency-dependent attenuation in breast tissue characterization

Landini, Luigi; Sarnelli, R; Squartini, F

doi:10.1016/0301-5629(85)90031-6

Cited by 35 publications

(18 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In liver disease, inflamed livers were shown to have lower than normal attenuation coefficients while cirrhotic livers have higher than normal attenuation coefficients (Kuc and Schwartz, 1979). In breast tissue, the attenuation coefficient is low for fatty tissue and medullary carcinoma and high for infiltrating ductal carcinoma and fibrosis (Landini et al, 1985;Landini and Sarnelli, 1986). Accurate characterization of tissue pathologies using ultrasonic attenuation is strongly dependent on the accuracy of the algorithm that is used to obtain the attenuation coefficient estimates.…”

Section: Introductionmentioning

confidence: 99%

A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes

Labyed

Bigelow

2011

The Journal of the Acoustical Society of America

100

View full text Add to dashboard Cite

Accurate characterization of tissue pathologies using ultrasonic attenuation is strongly dependent on the accuracy of the algorithm that is used to obtain the attenuation coefficient estimates. In this paper, computer simulations were used to compare the accuracy and the precision of the three methods that are commonly used to estimate the local ultrasonic attenuation within a region of interest (ROI) in tissue; namely, the spectral log difference method, the spectral difference method, and the hybrid method. The effects of the inhomgeneities within the ROI on the accuracy of the three algorithms were studied, and the optimal ROI size (the number of independent echoes laterally and the number of pulse lengths axially) was quantified for each method. The three algorithms were tested for when the ROI was homogeneous, the ROI had variations in scatterer number density, and the ROI had variations in effective scatterer size. The results showed that when the ROI was homogeneous, the spectral difference method had the highest accuracy and precision followed by the spectral log difference method and the hybrid method, respectively. Also, when the scatterer number density varied, the spectral difference method completely failed, while the log difference method and hybrid method still gave good results. Lastly, when the scatterer size varied, all of the methods failed.

show abstract

Section: Introductionmentioning

confidence: 99%

A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes

Labyed

Bigelow

2011

The Journal of the Acoustical Society of America

100

View full text Add to dashboard Cite

show abstract

“…The estimated attenuation for fibroglandular tissue in breast is 22.8 dB/cm for a 10 MHz transducer [23]. The slope of ultrasonic attenuation for some carcinomas is about 0.08-1.6 dB/ cm/MHz [24]. Coded excitation has great potential for reducing strain noise in absorbing media such as breast tissue.…”

Section: Discussionmentioning

confidence: 99%

Coded pulse excitation for ultrasonic strain imaging

Liu¹,

Insana

2005

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

View full text Add to dashboard Cite

Decorrelation strain noise can be significantly reduced in low echo-signal-to-noise (eSNR) conditions using coded excitation. Large time-bandwidth-product (>30) pulses are transmitted into tissue mimicking phantoms with 2.5-mm diameter inclusions that mimic the elastic properties of breast lesions. We observed a 5-10 dB improvement in eSNR that led to a doubling of the depth of focus for strain images with no reduction of spatial resolution. In high eSNR conditions, coded excitation permits the use of higher carrier frequencies and shorter correlation windows to improve the attainable spatial resolution for strain relative to that obtained with conventional short pulses. This paper summarizes comparative studies of strain imaging in noise-limited conditions obtained by short pulses and four common aperiodic codes (chirp, Barker, suboptimal, and Golay) as a function of attenuation, eSNR and applied strain. Imaging performance is quantified using SNR for displacement (SNR d ), local modulation transfer function (LMTF), and contrast-to-noise ratio for strain (CNR ϵ ). We found that chirp and Golay codes are the most robust for imaging soft tissue deformation using matched filter decoding. Their superior performance is obtained by balancing the need for low-range lobes, large eSNR improvement, and short-code duration.

show abstract

“…This technique has been used in most in vitro acoustic attenuation measurements [2]. It has also been used as an imaging technique in both orthographic [3] and tomographic [4] modes.…”

Section: A Ultrasonic Reflection and Attenuation Imagingmentioning

confidence: 99%

Three-dimensional ultrasonic reflection and attenuation imaging

Schattner

Whitehurst

Jensen

et al. 1992

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

View full text Add to dashboard Cite

A three-dimensional, volumetric, data acquisition and reconstruction system for ultrasonic imaging is described. The method entails storing the digitized waveforms from each element of a multielement annular array, with bidirectional mechanical scanning. The system was implemented through digitization of the RF signals from each of the rings of an annular-array transducer, storage of the signals in computer memory, and offline image reconstruction. Initial reflection and reflex transmission images acquired with this system are presented. The results of different image reconstruction algorithms are demonstrated.

show abstract

Frequency-dependent attenuation in breast tissue characterization

Cited by 35 publications

References 10 publications

A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes

A theoretical comparison of attenuation measurement techniques from backscattered ultrasound echoes

Coded pulse excitation for ultrasonic strain imaging

Three-dimensional ultrasonic reflection and attenuation imaging

Contact Info

Product

Resources

About