Quantitative assessment of surface roughness using backscattered ultrasound: The effects of finite surface curvature
dc.contributor.author | Chiang, Edward H. | en_US |
dc.contributor.author | Adler, Ronald S. | en_US |
dc.contributor.author | Meyer, Charles R. | en_US |
dc.contributor.author | Rubin, Jonathan M. | en_US |
dc.contributor.author | Dedrick, Dale K. | en_US |
dc.contributor.author | Laing, Timothy J. | en_US |
dc.date.accessioned | 2006-04-10T18:27:05Z | |
dc.date.available | 2006-04-10T18:27:05Z | |
dc.date.issued | 1994 | en_US |
dc.identifier.citation | Chiang, Edward H., Adler, Ronald S., Meyer, Charles R., Rubin, Jonathan M., Dedrick, Dale K., Laing, Timothy J. (1994)."Quantitative assessment of surface roughness using backscattered ultrasound: The effects of finite surface curvature." Ultrasound in Medicine & Biology 20(2): 123-135. <http://hdl.handle.net/2027.42/31893> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6TD2-4C7V979-DB/2/815cda89c140120b4bb48553056959fc | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/31893 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=8023425&dopt=citation | en_US |
dc.description.abstract | We have previously described a technique to quantify surface fibrillatory changes in osteoarthritic articular cartilage. In that study, the angular distribution of the scattered acoustic field from an insonifying source directly related to the distribution of surface fibrillatory changes. In the current study, we demonstrate a more sensitive method to quantify surface roughness, the effect of global surface curvature in estimating surface roughness and the utility of using focused transducers in circumventing this potential problem for in vivo work. Phantoms composed of acrylic rods with and without sandpaper grit (about 15 to 72 [mu], mean particle size) applied to the surface were scanned. A more robust angular scattering technique to measure the angle dependent data was employed, in which the integrated squared pressure amplitude over a finite time window (mean power) was measured as a function of incident acoustic angle for varying surface roughnesses and radii of curvature. We show that the potential dynamic range for making roughness discriminations diminishes with decreasing radius of curvature of the acrylic rod phantoms using an unfocused transducer. This effect is minimized with use of a focused transducer. Roughness effects are most evident at sufficiently large angles where incoherent scattering dominates. We conclude that the roughness of cylindrically curved surfaces can be quantitatively assessed using a focused ultrasound beam at sufficiently large incident angles, given that the focal spot size is sufficiently smaller than the radius of curvature of the surface. | en_US |
dc.format.extent | 997673 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Quantitative assessment of surface roughness using backscattered ultrasound: The effects of finite surface curvature | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Radiology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.contributor.affiliationum | Department of Orthopaedic Research Laboratories, Departments of Surgery (Orthopaedics Section) and Internal Medicine (Rheumatology Division) University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.contributor.affiliationum | Department of Internal Medicine (Rheumatology Division), University of Michigan Medical Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-0030, USA | en_US |
dc.identifier.pmid | 8023425 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/31893/1/0000845.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0301-5629(94)90077-9 | en_US |
dc.identifier.source | Ultrasound in Medicine & Biology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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