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Journal articles on the topic 'Ultrasound attenuation imaging'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Roux, Christian, Bruno Fournier, Pascal Laugier, Christine Chappard, Sami Kolta, Maxime Dougados, and Geneviève Berger. "Broadband ultrasound attenuation imaging: A new imaging method in osteoporosis." Journal of Bone and Mineral Research 11, no. 8 (December 3, 2009): 1112–18. http://dx.doi.org/10.1002/jbmr.5650110810.

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2

Roux, C., B. Fournier, P. Laugier, C. Chappard, S. Kolta, G. Berger, and M. Dougados. "Broadband ultrasound attenuation imaging: A new imaging method in osteoporosis." Osteoporosis International 6, S1 (January 1996): 186. http://dx.doi.org/10.1007/bf02500280.

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3

Tu, Haifeng, Tomy Varghese, Ernest L. Madsen, Quan Chen, and James A. Zagzebski. "Ultrasound Attenuation Imaging Using Compound Acquisition and Processing." Ultrasonic Imaging 25, no. 4 (October 2003): 245–61. http://dx.doi.org/10.1177/016173460302500403.

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4

Iijima, Hiroko, Takashi Nishimura, Toshifumi Tada, Chikage Nakano, Tomoko Aoki, Tomoyuki Takashima, Naoto Ikeda, et al. "A new method to evaluate hepatic steatosis using ultrasound "Attenuation imaging"." Kanzo 59, no. 1 (2018): 65–67. http://dx.doi.org/10.2957/kanzo.59.65.

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5

Ribault, M., J. Y. Chapelon, D. Cathignol, and A. Gelet. "Differential Attenuation Imaging for the Characterization of High Intensity Focused Ultrasound Lesions." Ultrasonic Imaging 20, no. 3 (July 1998): 160–77. http://dx.doi.org/10.1177/016173469802000302.

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High intensity focused ultrasound (HIFU) is an effective technique for creating coagulative necrotic lesions in biological tissue, with a view to treating localized tumors. Although good results have already been obtained, notably in urology, current systems lack a real time monitoring system to check the efficacy of the treatment procedures. This study describes the development and assessment of a noninvasive system for making local measurements of attenuation variations during HIFU treatment procedures. An apparatus (Ablatherm, Edap-Technomed, France), combining a 2.5 MHz therapeutic transducer and a 5.5 MHz twin plane imaging probe (connected to an ultrasound scanner), was used to produce lesions. The rf signals needed to calculate the attenuation were recorded as outputs from the ultrasound scanner, before and after the high intensity firing sequences, which were performed on ten pieces of porcine liver. Each firing sequence involved producing a lesion volume comprising 42 individual lesions. A number of recordings were also made without producing lesions, in order to test the reproducibility of the measurements. The attenuation function was evaluated locally using the centroid and the multinarrowband methods. Initially, changes in the integrated attenuation αbar; (mean attenuation in the 4–7 MHz range) and the attenuation slope β were examined for the lesion volume. β values did not vary significantly within this range, whereas α values varied significantly (in the region of 86% of the initial level) in comparison to measurements performed without forming lesions. The differential attenuation Δα (representing local variations in α) was subsequently used to generate images revealing the lesion areas. There was a strong similarity between these ‘Δα images’ and the lesion volumes defined by the operator. ‘Δα images’ offer several advantages over existing attenuation imaging techniques. Any problems related to the heterogeneity of the medium are eliminated, since only the change in attenuation is taken into account. Furthermore, there is no need to compensate for diffraction when estimating Δα, as the rf signals are captured in exactly the same positions before and after treatment. This technique can be used during in vivo treatment procedures. It can be implemented in real time, since the computational algorithms (based primarily on FFT calculations) are very fast. The technique should provide clinical practitioners with valuable qualitative and quantitative information for use in HIFU ultrasound surgery.

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6

Baran, D. T. "Broadband ultrasound attenuation measurements in osteoporosis." American Journal of Roentgenology 156, no. 6 (June 1991): 1326–27. http://dx.doi.org/10.2214/ajr.156.6.2028905.

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7

Lee, Bum S., and Song B. Park. "Modeling and Computer Simulation of Ultrasound Imaging Systems and Human Tissues." Ultrasonic Imaging 10, no. 4 (October 1988): 229–47. http://dx.doi.org/10.1177/016173468801000401.

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A simulator has been developed for an ultrasound linear scan B-mode imaging system. First, a numerical method of calculating field patterns or pulse echo patterns is presented for a full-aperture system with a given transducer geometry in nonattenuating and attenuating media, based on the measured temporal impulse response for a single transducer element immersed in water, and taking into account the variation of attenuation and acoustic velocity in human tissue. The simulator then models and simulates the receiver subsystems in detail using the received pulse echo. In particular, a dynamic inverse filter, to improve the axial resolution, and an unconventional TGC gain function, to reduce the SNR deterioration through logarithmic compression, are proposed. Finally, simulation and experimental results are presented and discussed.

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8

Kanayama, Yuko, Naohisa Kamiyama, Kenichi Maruyama, and Yasukiyo Sumino. "Real-Time Ultrasound Attenuation Imaging of Diffuse Fatty Liver Disease." Ultrasound in Medicine & Biology 39, no. 4 (April 2013): 692–705. http://dx.doi.org/10.1016/j.ultrasmedbio.2012.10.021.

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9

Laugier, P., G. Berger, P. Giat, P. Bonnin-Fayet, and M. Laval-Jeantet. "Ultrasound Attenuation Imaging in the Os Calcis: An Improved Method." Ultrasonic Imaging 16, no. 2 (April 1994): 65–76. http://dx.doi.org/10.1177/016173469401600201.

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A complete assessment of the broadband ultrasonic attenuation (BUA) distribution within the os calcis was made using an ultrasonic mechanical scanning device with focused transducers. Measurements were performed on 12 os calces removed from fresh female cadavers. We present the first images of BUA of the os calcis. Reasonably high quality images were obtained compared to computed tomography. The resolution provided by the focused transducers is approximately 4 or 5 mm in the focal zone. Compared to dual energy X-ray absorptiometry (DEXA) or quantitative computed tomography, ultrasound imaging of the os calcis offers the possibility of controlling the placement, size and shape of the region of interest and to use multiple measurement sites. DEXA was used systematically to measure the bone mineral density (BMD) of the os calces. A highly significant correlation between BMD and BUA was found (r= 0.97 p < 0.001).

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10

Laugier, P. "Ultrasound Attenuation Imaging in the Os Calcis: An Improved Method." Ultrasonic Imaging 16, no. 2 (April 1994): 65–76. http://dx.doi.org/10.1006/uimg.1994.1004.

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11

PIAO, DAQING, ZHEN JIANG, KENNETH E. BARTELS, G. REED HOLYOAK, JERRY W. RITCHEY, GUAN XU, CHARLES F. BUNTING, and GENNADY SLOBODOV. "IN VIVO TRANS-RECTAL ULTRASOUND-COUPLED NEAR-INFRARED OPTICAL TOMOGRAPHY OF INTACT NORMAL CANINE PROSTATE." Journal of Innovative Optical Health Sciences 02, no. 03 (July 2009): 215–25. http://dx.doi.org/10.1142/s1793545809000620.

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This is the first tomography-presentation of the optical properties of a normal canine prostate, in vivo, in its native intact environment in the pelvic canal. The imaging was performed by trans-rectal near-infrared (NIR) optical tomography in steady-state measurement at 840 nm on three sagittal planes across the right lobe, middle-line, and left lobe, respectively, of the prostate gland. The NIR imaging planes were position-correlated with concurrently applied trans-rectal ultrasound, albeit there was no spatial prior employed in the NIR tomography reconstruction. The reconstructed peak absorption coefficients of the prostate on the three planes were 0.014, 0.012, and 0.014 mm-1. The peak reduced scattering coefficients were 5.28, 5.56, and 6.53 mm-1. The peak effective attenuation coefficients were 0.45, 0.43, and 0.50 mm-1. The absorption and effective attenuation coefficients were within the ranges predictable at 840 nm by literature values which clustered sparsely from 355 nm to 1064 nm, none of which were performed on a canine prostate with similar conditions. The effective attenuation coefficients of the gland were shown to be generally higher in the internal aspects than in the peripheral aspects, which is consistent with the previous findings that the urethral regions were statistically more attenuating than the capsular regions.

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12

Tribl, B., H. Vogelsang, E. Pohanka, S. Grampp, A. Gangl, and W. H. Hörl. "Broadband Ultrasound Attenuation of the Calcaneus." Acta Radiologica 39, no. 6 (November 1998): 637–41. http://dx.doi.org/10.3109/02841859809175489.

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13

Palmeri, Mark L., Kristin D. Frinkley, Katherine G. Oldenburg, and Kathryn R. Nightingale. "Characterizing Acoustic Attenuation of Homogeneous Media Using Focused Impulsive Acoustic Radiation Force." Ultrasonic Imaging 28, no. 2 (April 2006): 114–28. http://dx.doi.org/10.1177/016173460602800204.

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A new method to characterize a material's attenuation using acoustic radiation force is proposed. Comparison of displacement magnitudes generated in a homogeneous material by acoustic radiation force excitations can be used to estimate the material's attenuation when the excitations are applied over a range of focal depths while maintaining a constant lateral focal configuration. Acoustic attenuations are related to the inverse of the excitation focal depth that yields the greatest focal zone displacement for this protocol. Experimental studies in calibrated tissue-mimicking phantoms are presented to demonstrate the feasibility of this method. Attenuations ranging from 0.3–1.5 dB/cm/MHz were characterized over excitation focal depths ranging from 5–30 mm, with an accuracy of 0.1 ± 0.15 dB/cm/MHz. As currently implemented, this method is limited to characterizing materials that have homogeneous material properties and acoustic attenuations. This method for characterizing acoustic attenuation can be performed using conventional diagnostic scanners without any additional hardware and could also be performed concurrently with acoustic radiation force-based imaging modalities to generate images of mechanical properties and attenuation that are spatially co-registered with B-mode images.

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14

Withey, Claire, and J. E. Adams. "Bone density measurements by broadband ultrasound attenuation." Clinical Radiology 49, no. 12 (December 1994): 895. http://dx.doi.org/10.1016/s0009-9260(05)82887-9.

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15

Lu, Z. F., J. A. Zagzebski, E. L. Madsen, and F. Dong. "A Method for Estimating an Overlying Layer Correction in Quantitative Ultrasound Imaging." Ultrasonic Imaging 17, no. 4 (October 1995): 269–90. http://dx.doi.org/10.1177/016173469501700402.

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A new method is tested to compensate for attenuation losses through the intervening layers in quantitative ultrasound imaging. The method subtracts the echo signal power spectrum acquired from a uniform region beneath the overlying layers from the signal power spectrum obtained from a reference phantom using the same instrumentation system settings. Changes in spectral components with frequency are then used to estimate the attenuation of the overlying layers. Several phantoms were used to test the method, among which was a phantom having three windows, one with no overlying layers and the other two with fat and muscle mimicking layers of different degrees of irregularity. Attenuation losses through the windows were compensated for using the technique, producing backscatter estimator images of a simulated tumor inside the phantom. After applying the method, consistent results for the backscatter estimator of the tumor, as well as the backscatter coefficient of the background material, were obtained from the various windows.

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16

Chapelon, J. "New approaches for ultrasonic attenuation imaging." Ultrasonic Imaging 9, no. 1 (January 1987): 66–67. http://dx.doi.org/10.1016/0161-7346(87)90055-1.

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17

Leander, P., S. Sjöberg, and P. Höglund. "CT and MR imaging of the liver: Clinical importance of nutritional status." Acta Radiologica 41, no. 2 (March 2000): 151–55. http://dx.doi.org/10.1080/028418500127345172.

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Purpose: In an experimental study in rats a correlation between nutritional status and hepatic attenuation in CT and signal intensities in MR imaging was shown. Is physiological nutritional status of importance in clinical CT and MR imaging? Material and Methods: In a cross-over study including 12 healthy volunteers (6 women and 6 men, mean age 34 years), CT and MR imaging of the liver were performed with nutritional status at three different levels, i.e., normal, fasting and after glycogen-rich meals. CT and MR were performed on clinical imaging systems and hepatic attenuation and signal intensity, respectively, were assessed. In MR, T1-weighted, proton density-weighted and T2-weighted pulse-sequences were used. Results: In CT there were significantly ( p<0.01) higher liver attenuations in normal nutritional status and after glycogen rich-meals compared to the fasting condition. The difference between fasting and glycogen-rich meals were 10.5 HU for men, 7.4 for women and mean 8.8 HU for all 12 volunteers. In MR imaging the differences were small and non-significant. The results of this study are in accordance with an earlier experimental study in rats. Conclusion: In CT it may be of importance not to have patients in a fasting condition as it lowers the attenuation in normal liver tissue. The findings are important for planning of clinical studies where hepatic attenuation will be assessed and may be of some importance in clinical CT. In MR imaging the results indicate that the nutritional status is of less importance.

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18

Nery, Daniela Rebouças, Yves Boher Costa, Thais Caldara Mussi, and Ronaldo Hueb Baroni. "Epidemiological and imaging features that can affect the detection of ureterolithiasis on ultrasound." Radiologia Brasileira 51, no. 5 (September 21, 2018): 287–92. http://dx.doi.org/10.1590/0100-3984.2017.0113.

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Abstract Objective: To identify, in patients with clinical suspicion of ureterolithiasis, epidemiological and imaging features that affect calculus detection on ultrasound, as well as to compare ultrasound with multidetector computed tomography (MDCT). Materials and Methods: We searched our database for patients who underwent ultrasound, followed by MDCT (if the ultrasound was negative), for suspected ureterolithiasis in an emergency setting. Patients were divided into three groups: positive ultrasound (US+); negative ultrasound/positive MDCT (US−/MDCT+); and negative ultrasound/negative MDCT (US−/MDCT−). We evaluated age, gender, ureterolithiasis laterality, location of the calculus within the ureter, body mass index, calculus diameter, and calculus attenuation on MDCT. Results: Of a total of 292 cases of suspected ureterolithiasis, 155 (53.1%) were in the US+ group, 46 (15.7%) were in the US−/MDCT+ group, and 91 (31.2%) were in the US−/MDCT− group. There were no significant differences among the groups in terms of age, gender, ureterolithiasis laterality, and mean MDCT attenuation values. Distal ureterolithiasis was most common in the US+ group, and calculi at other ureteral locations were more common in the US−/MDCT+ group. The mean body mass index was significantly higher in the US−/MDCT+ group than in the US+ group, and the mean calculus diameter was significantly greater in the US+ group than in the US−/MDCT+ group. Conclusion: A high body mass index, large calculus diameter, and calculus location in the distal third of the ureter are the major factors favoring ureterolithiasis detection on ultrasound.

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19

Gong, Ping, Chenyun Zhou, Pengfei Song, Chengwu Huang, U.-Wai Lok, Shanshan Tang, Kymberly Watt, Matthew Callstrom, and Shigao Chen. "Ultrasound Attenuation Estimation in Harmonic Imaging for Robust Fatty Liver Detection." Ultrasound in Medicine & Biology 46, no. 11 (November 2020): 3080–87. http://dx.doi.org/10.1016/j.ultrasmedbio.2020.07.006.

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20

Roitner, H., and P. Burgholzer. "Efficient modeling and compensation of ultrasound attenuation losses in photoacoustic imaging." Inverse Problems 27, no. 1 (December 17, 2010): 015003. http://dx.doi.org/10.1088/0266-5611/27/1/015003.

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21

Damilakis, J., A. Papadakis, K. Perisinakis, and N. Gourtsoyiannis. "Broadband ultrasound attenuation imaging: influence of location of region of measurement." European Radiology 11, no. 7 (March 7, 2001): 1117–22. http://dx.doi.org/10.1007/s003300000758.

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22

Pawlicki, Alexander D., and William D. O’Brien. "Method for Estimating Total Attenuation from a Spatial Map of Attenuation Slope for Quantitative Ultrasound Imaging." Ultrasonic Imaging 35, no. 2 (March 14, 2013): 162–72. http://dx.doi.org/10.1177/0161734613478695.

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23

Yang, Liu, Chun Guang Xu, Xin Liang Li, and Ye Huang. "Ultrasound Imaging Using Spatial Domain Phase Information." Applied Mechanics and Materials 742 (March 2015): 118–22. http://dx.doi.org/10.4028/www.scientific.net/amm.742.118.

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The aim of this paper is to determine the efficacy of the ring-shaped array used for imaging the objects inside the array. Hyperbola algorithm and ellipse algorithm which are conventionally used in the field of guided wave for locating the defects are developed and combined here to extract the image. Meanwhile, much more phase information is added in this process. Fan-shaped ultrasound radiation is generated separately by the 45 rectangular ultrasonic transducers which are circular embedded in the wall of a container. The time of flight data and the attenuation data are obtained and stored in the A-scan wave of each receiving transducer, subsequently, they are applied for reconstructing the image of all tested objects. The validity of the combined measuring method with phase information is demonstrated by imaging the distributed polyurethane objects.

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24

Knipp, B. S., J. A. Zagzebski, T. A. Wilson, F. Dong, and E. L. Madsen. "Attenuation and Backscatter Estimation Using Video Signal Analysis Applied to B-Mode Images." Ultrasonic Imaging 19, no. 3 (July 1997): 221–33. http://dx.doi.org/10.1177/016173469701900305.

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Most methods for in vivo quantitation of ultrasound attenuation and backscatter are not available clinically because they rely upon acquiring and analyzing radio frequency (rf) echo signals. This paper describes a technique to estimate ultrasound attenuation and backscatter from B-mode image data. The video signal analysis (VSA) technique utilizes images of a reference phantom, taken using the same instrument settings used to record images from the patient or sample, to account for effects of the transducer beam, system gain and signal processing on image data. A ‘gray-scale look-up table’ is derived to convert image pixel value data within a region of interest to echo signal amplitudes relative to echo signals from the same depth in the reference phantom. These relative echo levels enable estimates of attenuation and backscatter in the region of interest. VSA was used to quantify acoustic properties of test phantoms using 3 different clinical scanners and various transducers. The level of agreement between results obtained with different ultrasound imaging systems was very good. VSA attenuation and backscatter levels also compare favorably with attenuation coefficients and backscatter coefficients obtained using rf analysis.

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25

Hsu, Po-Ke, Li-Sha Wu, Hsu-Heng Yen, Hsiu Ping Huang, Yang-Yuan Chen, Pei-Yuan Su, and Wei-Wen Su. "Attenuation Imaging with Ultrasound as a Novel Evaluation Method for Liver Steatosis." Journal of Clinical Medicine 10, no. 5 (March 2, 2021): 965. http://dx.doi.org/10.3390/jcm10050965.

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In recent years, ultrasound attenuation imaging (ATI) has emerged as a new method to detect liver steatosis. However, thus far, no studies have confirmed the clinical utility of this technology. Using a retrospective database analysis of 28 patients with chronic liver disease who underwent ultrasound liver biopsy and ATI, we compared the presence and degree of steatosis measured by ATI with the results obtained through liver biopsy. The area under the receiver operating characteristic curve (AUROC) of the ATI for differentiating between normal and hepatic steatosis was 0.97 (95% confidence interval: 0.83–1.00). The AUROC of the ATI was 0.99 (95% confidence interval: 0.86–1.00) in grade ≥2 liver steatosis and 0.97 (95% confidence interval: 0.82–1.00) in grade 3. ATI showed good consistency and accuracy for the steatosis grading of liver biopsy. Therefore, ATI represents a novel diagnostic measurement to support the diagnosis of liver steatosis in non-invasive clinical practice.

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26

GRAIF, MOSHE, MOTI YANUKA, MIMI BARAZ, ANAT BLANK, MENACHEM MOSHKOVITZ, ADA KESSLER, TUVIA GILAT, et al. "Quantitative Estimation of Attenuation in Ultrasound Video Images." Investigative Radiology 35, no. 5 (May 2000): 319–24. http://dx.doi.org/10.1097/00004424-200005000-00006.

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27

Drysdale, Ian P., Heather J. Hinkley, Melanie Shale, Daphne Bird, and Nick J. Walters. "Bilateral Variation in Calcaneal Broadband Ultrasound Attenuation." Journal of Clinical Densitometry 4, no. 4 (December 2001): 337–41. http://dx.doi.org/10.1385/jcd:4:4:337.

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28

Kremkau, Frederick W. "Attenuation." Journal of Diagnostic Medical Sonography 8, no. 2 (March 1992): 100–102. http://dx.doi.org/10.1177/875647939200800211.

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29

Tai, Haowei, Mawia Khairalseed, and Kenneth Hoyt. "Adaptive attenuation correction during H-scan ultrasound imaging using K-means clustering." Ultrasonics 102 (March 2020): 105987. http://dx.doi.org/10.1016/j.ultras.2019.105987.

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30

Yoo, Jeongin, Jeong Min Lee, Ijin Joo, Dong Ho Lee, Jeong Hee Yoon, Hyo-Jin Kang, and Su Joa Ahn. "Reproducibility of ultrasound attenuation imaging for the noninvasive evaluation of hepatic steatosis." Ultrasonography 39, no. 2 (April 1, 2020): 121–29. http://dx.doi.org/10.14366/usg.19034.

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31

Chappard, C., F. Lefebvre, B. Fournier, C. Roux, P. Laugier, and G. Berger. "In vivo precision of automatic region of measurement in ultrasound attenuation imaging." Osteoporosis International 6, S1 (January 1996): 174. http://dx.doi.org/10.1007/bf02500235.

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32

Schnall, Mitchell, and Mark Rosen. "Primer on Imaging Technologies for Cancer." Journal of Clinical Oncology 24, no. 20 (July 10, 2006): 3225–33. http://dx.doi.org/10.1200/jco.2006.06.5656.

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Medical images represent maps of the spatial distribution of tissue properties. Each modality probes a specific set of tissue properties such as x-ray attenuation for computed tomography, transmission of sound for ultrasound, and the rate of glucose uptake for fluorodeoxyglucose–positron emission tomography. Understanding the basic principal underlying each modality is important for developing approaches to utilize imaging in cancer research and clinical care. In addition, each modality has specific challenges related to reliable quantitation that are important to appreciate.

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33

Wu, Wei-Ting, Ke-Vin Chang, Yu-Chun Hsu, Po-Cheng Hsu, Vincenzo Ricci, and Levent Özçakar. "Artifacts in Musculoskeletal Ultrasonography: From Physics to Clinics." Diagnostics 10, no. 9 (August 27, 2020): 645. http://dx.doi.org/10.3390/diagnostics10090645.

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Ultrasound appears to be the most useful imaging tool in the diagnosis and guided treatment of musculoskeletal disorders. However, ultrasonography has been criticized for being user dependent. Therefore, medical professionals should be familiar with the basic principles of ultrasound imaging (e.g., physics and technical skills) to diminish artifacts and avoid misinterpretation. In this review, we focused on the physics of common artifacts, their clinical significance, and the ways to tackle them in daily practice during musculoskeletal imaging. In particular, artifacts pertaining to the focal zone, beam attenuation, path and side lobe of the beam, speed of the sound, and range ambiguity were described.

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Fredfeldt, K. E. "Relative Attenuation Measurements of Ultrasound in the Liver Using the Zerocrossing Method." Acta Radiologica 30, no. 3 (May 1989): 299–303. http://dx.doi.org/10.1177/028418518903000315.

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The zerocrossing method for measurement of the frequency dependence of ultrasound attenuation was used to study the livers of 10 healthy subjects and 9 patients. Increased attenuation in vivo was observed in 5 patients who were seen to have a ‘bright liver’ during B-scanning. Normal attenuation was seen in 3 patients who had pathologic liver biopsies, but normal B-scan images. Increased attenuation was seen in one patient who had a nodular appearance of the liver during B-scanning

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35

Jang, Heung S., Tai K. Song, and Song B. Park. "Ultrasound Attenuation Estimation in Soft Tissue Using the Entropy Difference of Pulsed Echoes between Two Adjacent Envelope Segments." Ultrasonic Imaging 10, no. 4 (October 1988): 248–64. http://dx.doi.org/10.1177/016173468801000402.

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In this paper, we describe a new method of estimating the ultrasound attenuation coefficient of soft tissue based on the entropy difference between two adjacent envelope segments of narrowband ultrasound pulse echoes. Assuming uniform attenuation in the region under investigation, the attenuation is estimated by minimizing the difference of entropies in the two segments as the attenuation is continuously compensated for. The simulation and experimental results with a tissue equivalent (TE) phantom show that the proposed estimator is quite robust to receiver noise and requires considerably less data length as compared with conventional methods. At present, an experimental result with a TE phantom shows that a resolution of 10 mm × 10 mm can be attained with echoes from a depth of 3 cm using a 2.25 MHz transducer.

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36

Resch, H., P. Pietschmann, P. Bernecker, E. Krexner, and R. Willvonseder. "Broadband ultrasound attenuation: a new diagnostic method in osteoporosis." American Journal of Roentgenology 155, no. 4 (October 1990): 825–28. http://dx.doi.org/10.2214/ajr.155.4.2119116.

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37

Economou, G., R. W. Whitehouse, and J. E. Adams. "Bone density by broadband ultrasound attenuation: Precision and applications." Clinical Radiology 48, no. 5 (November 1993): 338–39. http://dx.doi.org/10.1016/s0009-9260(05)81303-0.

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38

Halpern, Ethan J. "Calculation of Tissue Attenuation with a Clinical Ultrasound Unitz." Investigative Radiology 28, no. 7 (July 1993): 598–603. http://dx.doi.org/10.1097/00004424-199307000-00009.

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39

Berger, G., P. Laugier, M. Fink, and J. Perrin. "Optimal Precision in Ultrasound Attenuation Estimation and Application to the Detection of Duchenne Muscular Dystrophy Carriers." Ultrasonic Imaging 9, no. 1 (January 1987): 1–17. http://dx.doi.org/10.1177/016173468700900101.

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This paper deals with the measurement of the attenuation of ultrasound in muscle and its application to the detection of Duchenne Muscular Dystrophy (DMD) carriers. The precision obtained when measuring the attenuation is an important parameter to be considered. A statistical approach is taken on simulated data and compared to in vivo results. The results allow discussion for the minimum tissue volume needed for the estimation. Variations in muscle attenuation between normals were obtained from studies on 27 volunteers. These attenuation values were compared to those obtained from 19 carriers of DMD. Attenuation appears to be a potential clinical indicator of DMD carriers.

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40

Zagzebski, J. A., Z. F. Lu, and L. X. Yao. "Quantitative Ultrasound Imaging: in Vivo Results in Normal Liver." Ultrasonic Imaging 15, no. 4 (October 1993): 335–51. http://dx.doi.org/10.1177/016173469301500405.

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A method for quantitative imaging of ultrasonic backscatter levels has been implemented on a clinical imager. The method is based on comparing echo signal data from a sample or patient to echo data processed in the same way but acquired from a reference phantom. The attenuation coefficient and the backscatter coefficient of the reference phantom are known, permitting these quantities to be estimated for the sample. In the present paper, the spatial location of echo data acquisition is retained in the backscatter data analysis; quantitative “backscatter estimator” images are constructed, from which the backscatter coefficient over a region of interest may be obtained. When applied to human liver images, backscatter coefficients determined in 10 normal subjects were in approximate agreement with in vitro liver backscatter coefficients reported by previous Workers.

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Zhou, Jianyang, Qiwei Zhan, Yan Qing Zeng, and Qing Huo Liu. "Super-Resolution Ultrasound Imaging Based on a Fast Full-Waveform Solver." Journal of Theoretical and Computational Acoustics 27, no. 04 (January 21, 2019): 1850056. http://dx.doi.org/10.1142/s2591728518500561.

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We propose a fast 2D full-waveform forward and inverse scattering solver to reconstruct ultrasonic speed and attenuation properties. The forward method is based on the volume integral equation, accelerated by the extended Born approximation and biconjugate-gradient fast Fourier transform method. The inverse method is based on the extended contrast source inversion. The research results show that our proposed method can fully unravel multiple scattering effects and achieve sub-wavelength resolutions. Numerical experiments indicate that the efficiency and robustness of the forward and inverse methods.

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Halmen, Norbert, Christoph Kugler, Thomas Hochrein, Peter Heidemeyer, and Martin Bastian. "Ultrasound tomography for inline monitoring of plastic melts." Journal of Sensors and Sensor Systems 6, no. 1 (January 10, 2017): 9–18. http://dx.doi.org/10.5194/jsss-6-9-2017.

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Abstract. The inline determination of process and product parameters is of great help for the evaluation and optimization of new procedures. Therefore, an ultrasound process tomography system has been developed, which enables the imaging of the local filler distribution in plastic melts. The objects investigated were extruded rods made of polypropylene (PP) with radial filler gradients. During extrusion, sound velocity and attenuation of the plastic melt were determined and processed via a modified reconstruction algorithm according to Radon transform into 2-D sectional images. Despite the challenges of higher attenuation and impedance mismatch of 60 mm filled PP melt compared to water, the resulting images are of good quality. An important factor for the image quality after tomographic reconstruction is the opening angle of the used ultrasound transducers. Furthermore, a simulation environment was developed in Matlab, which serves as a testing platform for the measurement system.

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Kremkau, Frederick W. "Attenuation II." Journal of Diagnostic Medical Sonography 8, no. 4 (July 1992): 211–12. http://dx.doi.org/10.1177/875647939200800408.

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Kremkau, Frederick W. "Attenuation III." Journal of Diagnostic Medical Sonography 8, no. 6 (November 1992): 331–32. http://dx.doi.org/10.1177/875647939200800609.

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Salomonsson, Göran, and Benny Löfström. "Analysis of a System for Ultrasonic Imaging of Attenuation and Texture in Soft Tissue." Ultrasonic Imaging 7, no. 3 (July 1985): 225–43. http://dx.doi.org/10.1177/016173468500700303.

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Attenuation in tissue decreases both the amplitude and the bandwidth of a reflected ultrasonic signal. Only the amplitude is restored in conventional ultrasonic equipment by amplifying the signal in a time-gain-compensator. This paper describes a method for restoring both the amplitude and bandwidth of the signal and an implemention of this method is proposed. This consists of two main parts: a device for estimating the attenuation and a time-variable circuit. The time-variable circuit is controlled by the estimated attenuation such that its transfer function approximates the inverse of the transfer function of the attenuation within the transducer passband. Its output is then almost independent of the attenuation and contains information on the texture of the tissue. Both the texture and attenuation estimates are displayed graphically. The quality of the image of the texture can be improved by choosing a wideband transducer, since it is almost exclusively dependent of transducer bandwidth. The performance of the method is studied using both simulated signals and signals measured in vitro.

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Tang, Meng-Xing, Jean-Martial Mari, Peter N. T. Wells, and Robert J. Eckersley. "Attenuation Correction in Ultrasound Contrast Agent Imaging: Elementary Theory and Preliminary Experimental Evaluation." Ultrasound in Medicine & Biology 34, no. 12 (December 2008): 1998–2008. http://dx.doi.org/10.1016/j.ultrasmedbio.2008.04.008.

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Roitner, H., J. Bauer-Marschallinger, T. Berer, and P. Burgholzer. "Experimental evaluation of time domain models for ultrasound attenuation losses in photoacoustic imaging." Journal of the Acoustical Society of America 131, no. 5 (May 2012): 3763–74. http://dx.doi.org/10.1121/1.3699194.

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Khoei, S., J. V. Trapp, and C. M. Langton. "Ultrasound attenuation computed tomography assessment of PAGAT gel dose." Physics in Medicine and Biology 59, no. 15 (July 22, 2014): N129—N137. http://dx.doi.org/10.1088/0031-9155/59/15/n129.

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Goncharsky, Alexander V., and Sergey Y. Romanov. "Inverse problems of ultrasound tomography in models with attenuation." Physics in Medicine and Biology 59, no. 8 (April 2, 2014): 1979–2004. http://dx.doi.org/10.1088/0031-9155/59/8/1979.

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Serpe, Louie J., and Jae-Young Rho. "Broadband ultrasound attenuation value dependence on bone widthin vitro." Physics in Medicine and Biology 41, no. 1 (January 1, 1996): 197–202. http://dx.doi.org/10.1088/0031-9155/41/1/014.

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