Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Brent K. Hoffmeister"'
Publikováno v:
The Journal of the Acoustical Society of America. 152:2082-2089
Numerous studies have performed in vitro ultrasonic measurements of cancellous bone in water to develop techniques for ultrasonic bone assessment. Because cancellous bone is a highly porous medium, ultrasonic reflections at the water-bone interface m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::217ad22eeedd95bb842de3df965c3a34
https://doi.org/10.1121/10.0014417
https://doi.org/10.1121/10.0014417
Autor:
Brent K. Hoffmeister, Sarah I. Delahunt, Kiera L. Downey, Ann M. Viano, Doni M. Thomas, Loukas A. Georgiou, Aubrey J. Gray, Will R. Newman, Evan N. Main, Gia Pirro
Publikováno v:
Ultrasound in Medicine & Biology. 48:997-1009
Ultrasonic techniques are being developed to detect changes in cancellous bone caused by osteoporosis. The goal of this study was to test the relative in vivo performance of eight backscatter parameters developed over the last several years for ultra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55d66dd4bb903f5a80c3578ae164e70e
https://doi.org/10.1016/j.ultrasmedbio.2022.01.017
https://doi.org/10.1016/j.ultrasmedbio.2022.01.017
Publikováno v:
Ultrasound in Medicine & Biology. 46:2412-2423
Ultrasonic backscatter techniques are being developed to detect changes in bone caused by osteoporosis. The present study introduces a new technique that measures the exponential decay in the amplitude of the backscatter signal quantified by a parame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8281408ba4a61082164e6344df74e4c8
https://doi.org/10.1016/j.ultrasmedbio.2020.04.029
https://doi.org/10.1016/j.ultrasmedbio.2020.04.029
Publikováno v:
The Journal of the Acoustical Society of America. 152:A47-A47
The goal of this study was to characterize the ultrasonic properties of human scalp. Thirty-two specimens were prepared from formalin-fixed scalp tissue from four human donors (age 35–65, 2 male, 2 female). Tissue specimens were mounted in acrylic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03c1c6ac6fe96a4a90c64d44ebcdd5b7
https://doi.org/10.1121/10.0015494
https://doi.org/10.1121/10.0015494
Publikováno v:
The Journal of the Acoustical Society of America. 152:A47-A47
Ultrasonic backscatter may be able to detect changes in bone caused by osteoporosis. This study assesses the relative in vivo performance of three ultrasonic backscatter parameters: cortical-cancellous mean (CCM), cortical-cancellous slope (CCS), and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff4bab5574e4f09eda16de258c5639c2
https://doi.org/10.1121/10.0015493
https://doi.org/10.1121/10.0015493
Autor:
Brent K. Hoffmeister
Publikováno v:
The Journal of the Acoustical Society of America. 152:A117-A117
Osteoporosis is a bone disease that affects hundreds of millions of people worldwide. The name osteoporosis literally means “porous bone” reflecting the changes in bone density and microstructure that lead to increased risk of fracture. Ultrasoni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b035c8687318b396f172744e7b2cd6fb
https://doi.org/10.1121/10.0015732
https://doi.org/10.1121/10.0015732
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 68(11)
Ultrasonic backscatter techniques may offer a useful approach for detecting changes in bone caused by osteoporosis. The goal of this study was to investigate how bone mineral density (BMD) and the microstructure of human cancellous bone affect three
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::707df585ed6acb41c10b7d9dc2a657f7
https://pubmed.ncbi.nlm.nih.gov/34138705
https://pubmed.ncbi.nlm.nih.gov/34138705
Publikováno v:
Ultrasonics. 124:106742
Brain is inhomogeneous due to its composition of different tissue types (gray and white matter), anatomical structures (e.g. thalamus and cerebellum), and cavities in the brain (ventricles). These inhomogeneities lead to spatial variations in the ult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63462fb017f2715b01b84dbe255539ab
https://doi.org/10.1016/j.ultras.2022.106742
https://doi.org/10.1016/j.ultras.2022.106742
Autor:
Brent K. Hoffmeister, Jordan P. Ankersen, Abel A. Diaz, Sheldon C. Ebron, Joshua T. Moore, Jinsong Huang, Matthew T. Huber, Ann M. Viano, Luke C. Fairbanks
Publikováno v:
The Journal of the Acoustical Society of America. 143:3642-3653
Ultrasonic backscatter techniques are being developed to detect changes in cancellous bone caused by osteoporosis. One technique, called the backscatter difference technique, measures the power difference between two portions of a backscatter signal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ac4358cd8636610e1c377e01c6d2a01
https://doi.org/10.1121/1.5043385
https://doi.org/10.1121/1.5043385
Publikováno v:
The Journal of the Acoustical Society of America. 143:911-920
Materials that simulate the ultrasonic properties of tissues are used widely for clinical and research purposes. However, relatively few materials are known to simulate the ultrasonic properties of cancellous bone. The goal of the present study was t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37c99d37a0e0a1e77410fb535aafb3a4
https://doi.org/10.1121/1.5023219
https://doi.org/10.1121/1.5023219