Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.922587
L.F. Matsiev
Application of flexural mechanical resonators such as tuning forks, benders, etc. to liquid characterization is discussed. Additional complex impedance produced by a liquid environment to such resonators is considered. It was shown experimentally, that for the disk bender resonator this additional impedance can be represented by the sum of two terms: one that is proportional to liquid density and a second one that is proportional to the square root the of viscosity density product. Same model was earlier shown applicable to the tuning fork resonator. Interaction of a resonator of arbitrary shape oscillating in any mode with surrounding fluid is considered theoretically. The conditions on which this impedance model is applicable to any type of a resonator that directly displaces liquid are discussed. These conditions are satisfied for most of flexural resonators available, detailed consideration of tuning fork and disk bender is provided. Sensitivity of flexural resonator response to liquid electrical properties is discussed. Application of disk bender to density and viscosity measurements in strong electrolytes is considered.
{"title":"Application of flexural mechanical resonators to high throughput liquid characterization","authors":"L.F. Matsiev","doi":"10.1109/ULTSYM.2000.922587","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.922587","url":null,"abstract":"Application of flexural mechanical resonators such as tuning forks, benders, etc. to liquid characterization is discussed. Additional complex impedance produced by a liquid environment to such resonators is considered. It was shown experimentally, that for the disk bender resonator this additional impedance can be represented by the sum of two terms: one that is proportional to liquid density and a second one that is proportional to the square root the of viscosity density product. Same model was earlier shown applicable to the tuning fork resonator. Interaction of a resonator of arbitrary shape oscillating in any mode with surrounding fluid is considered theoretically. The conditions on which this impedance model is applicable to any type of a resonator that directly displaces liquid are discussed. These conditions are satisfied for most of flexural resonators available, detailed consideration of tuning fork and disk bender is provided. Sensitivity of flexural resonator response to liquid electrical properties is discussed. Application of disk bender to density and viscosity measurements in strong electrolytes is considered.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123285182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.922556
N. Tsutsui, Y. Ino, K. Imai, N. Senguttuvan, M. Ishii
We report crystal growth of 4-inch diameter and 8-inch long lithium tetraborate (Li/sub 2/B/sub 4/O/sub 7/) single crystals for SAW device applications. The crystals were grown by modified Bridgman method along <110> direction using platinum inserted carbon crucible under nitrogen atmosphere. The seed crystals were of same diameter (108 mm) to that of the crystals grown and of 25 mm in length. The crystals were grown at a rate of up to 0.5 mm/h. Wafers were cut at different places along the length of the ingot for studying the dislocation density distribution by chemical etching and X-ray topography. The EPD at center of wafer was found to be higher (1000 cm/sup 2/) than at outer area (100 cm/sup 2/). The SAW velocity has been measured across a 3-inch wafer and it was found that the variation of the velocity at different parts of the wafer was within /spl plusmn/0.04%.
{"title":"Growth of 4-inch diameter Li/sub 2/B/sub 4/O/sub 7/ single crystals for SAW devices","authors":"N. Tsutsui, Y. Ino, K. Imai, N. Senguttuvan, M. Ishii","doi":"10.1109/ULTSYM.2000.922556","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.922556","url":null,"abstract":"We report crystal growth of 4-inch diameter and 8-inch long lithium tetraborate (Li/sub 2/B/sub 4/O/sub 7/) single crystals for SAW device applications. The crystals were grown by modified Bridgman method along <110> direction using platinum inserted carbon crucible under nitrogen atmosphere. The seed crystals were of same diameter (108 mm) to that of the crystals grown and of 25 mm in length. The crystals were grown at a rate of up to 0.5 mm/h. Wafers were cut at different places along the length of the ingot for studying the dislocation density distribution by chemical etching and X-ray topography. The EPD at center of wafer was found to be higher (1000 cm/sup 2/) than at outer area (100 cm/sup 2/). The SAW velocity has been measured across a 3-inch wafer and it was found that the variation of the velocity at different parts of the wafer was within /spl plusmn/0.04%.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125321424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921622
M. Averkiou
Harmonic imaging was originally developed for microbubble contrast agents in the early 90s under the assumption that tissue is linear and all harmonic echoes are generated by the bubbles. In fact, tissue, like bubbles, is a nonlinear medium. Whereas the harmonic echoes from bubbles have their origins in nonlinear scattering, those from tissue are a result of nonlinear propagation. The clinical benefits of tissue harmonic imaging are reduced reverberation noise and overall clutter level, improved border delineation, increased contrast resolution, and reduced phase aberration artifacts. To a large extend these benefits are explained by the properties of nonlinear propagation of the transmitted ultrasonic pulses in the tissue.
{"title":"Tissue harmonic imaging","authors":"M. Averkiou","doi":"10.1109/ULTSYM.2000.921622","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921622","url":null,"abstract":"Harmonic imaging was originally developed for microbubble contrast agents in the early 90s under the assumption that tissue is linear and all harmonic echoes are generated by the bubbles. In fact, tissue, like bubbles, is a nonlinear medium. Whereas the harmonic echoes from bubbles have their origins in nonlinear scattering, those from tissue are a result of nonlinear propagation. The clinical benefits of tissue harmonic imaging are reduced reverberation noise and overall clutter level, improved border delineation, increased contrast resolution, and reduced phase aberration artifacts. To a large extend these benefits are explained by the properties of nonlinear propagation of the transmitted ultrasonic pulses in the tissue.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126860652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921517
L. Brown
The active area of a piezoelectric polymer resonator is an important criterion for transducer operating frequency, bandwidth and insertion loss. Much work has been carried out in selecting the resonator thickness, area, backing and matching layers for optimizing transducer efficiency and bandwidth using piezo-ceramic materials. For these materials, efficiency and bandwidth can be greatly enhanced by electrically tuning the piezo-ceramic element to a pulser-receiver and acoustically matching the element to its front and rear acoustic loads. The piezoelectric polymers, with weak piezoelectric properties, high internal losses, low mechanical quality factor and very low acoustic impedance, yield maximum bandwidth when left untuned. In this work, theoretical derivations are reported for optimizing the active area of the untuned piezoelectric polymer element for maximum power transfer at resonance.
{"title":"Optimizing the design of piezoelectric polymer ultrasound transducers","authors":"L. Brown","doi":"10.1109/ULTSYM.2000.921517","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921517","url":null,"abstract":"The active area of a piezoelectric polymer resonator is an important criterion for transducer operating frequency, bandwidth and insertion loss. Much work has been carried out in selecting the resonator thickness, area, backing and matching layers for optimizing transducer efficiency and bandwidth using piezo-ceramic materials. For these materials, efficiency and bandwidth can be greatly enhanced by electrically tuning the piezo-ceramic element to a pulser-receiver and acoustically matching the element to its front and rear acoustic loads. The piezoelectric polymers, with weak piezoelectric properties, high internal losses, low mechanical quality factor and very low acoustic impedance, yield maximum bandwidth when left untuned. In this work, theoretical derivations are reported for optimizing the active area of the untuned piezoelectric polymer element for maximum power transfer at resonance.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115203869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921698
E. Gardner, R. Bendiksen, N. Sponheim, G. Holley, A. Tornes, S. Krishnan, P.D. Miller, K. Fowkes, A. Gee, K. Oygarden
Modifications were made to a commercial ultrasound scanner to improve established myocardial perfusion estimation methods. These modified methods were tested in a series of animal experiments where the coronary flow was controlled. The measured flow was related to perfusion parameters determined through ultrasonic imaging.
{"title":"Synchronization of contrast agent destruction and imaging for perfusion assessment","authors":"E. Gardner, R. Bendiksen, N. Sponheim, G. Holley, A. Tornes, S. Krishnan, P.D. Miller, K. Fowkes, A. Gee, K. Oygarden","doi":"10.1109/ULTSYM.2000.921698","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921698","url":null,"abstract":"Modifications were made to a commercial ultrasound scanner to improve established myocardial perfusion estimation methods. These modified methods were tested in a series of animal experiments where the coronary flow was controlled. The measured flow was related to perfusion parameters determined through ultrasonic imaging.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122333286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921546
Rajiv Chopra, C. Luginbuhl, F. Foster, M. Bronskill
The feasibility of using multilayered transducers for variable frequency interstitial ultrasound thermal therapy was investigated. KLM calculations and experimental measurements evaluated the ability to transmit high intensity ultrasound at multiple frequencies from a single transducer. Heating simulations demonstrated the improved control over lesion depth with this design. Using a quarter wavelength PZT front "mismatching" layer, two transmission bands at 3.5 and 7.5 MHz were possible, resulting in the ability to control the lesion depth by a factor of 1.5 in tissue.
{"title":"Wideband transducers for improved control of interstitial heating patterns","authors":"Rajiv Chopra, C. Luginbuhl, F. Foster, M. Bronskill","doi":"10.1109/ULTSYM.2000.921546","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921546","url":null,"abstract":"The feasibility of using multilayered transducers for variable frequency interstitial ultrasound thermal therapy was investigated. KLM calculations and experimental measurements evaluated the ability to transmit high intensity ultrasound at multiple frequencies from a single transducer. Heating simulations demonstrated the improved control over lesion depth with this design. Using a quarter wavelength PZT front \"mismatching\" layer, two transmission bands at 3.5 and 7.5 MHz were possible, resulting in the ability to control the lesion depth by a factor of 1.5 in tissue.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122399207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921683
A. Lorenz, A. Pesavento, U. Scheipers, H. Ermert, M. Garcia-Schurmann, H. Sommerfeld, T. Senge, S. Philippou
We present the development of a combined system which is able to exploit the benefits of two methods used for tissue characterization, strain imaging and tissue classification using a trainable classification system. Our system is able to acquire in vivo multi-compression rf-data for the calculation of the tissue strain, i.e. the elastic properties of tissue, induced by tissue compression. At the same time a neuro-fuzzy classification system is used to map the tissue malignancy. In vivo classification results and in vivo strain images are presented. The images of the two new modalities are compared to demonstrate the advantages and restrictions of both methods.
{"title":"Ultrasonic tissue characterization-assessment of prostate tissue malignancy in vivo using a conventional classifier based tissue classification approach and elastographic imaging","authors":"A. Lorenz, A. Pesavento, U. Scheipers, H. Ermert, M. Garcia-Schurmann, H. Sommerfeld, T. Senge, S. Philippou","doi":"10.1109/ULTSYM.2000.921683","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921683","url":null,"abstract":"We present the development of a combined system which is able to exploit the benefits of two methods used for tissue characterization, strain imaging and tissue classification using a trainable classification system. Our system is able to acquire in vivo multi-compression rf-data for the calculation of the tissue strain, i.e. the elastic properties of tissue, induced by tissue compression. At the same time a neuro-fuzzy classification system is used to map the tissue malignancy. In vivo classification results and in vivo strain images are presented. The images of the two new modalities are compared to demonstrate the advantages and restrictions of both methods.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"583 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122841542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921593
D. Sokolov, M. Bailey, F. Pulvermakher, L. Crum
Extracorporeal shock wave lithotripsy (ESWL) is a commonly used clinical treatment to comminute kidney stones into tiny fragments that can be expelled through a patient's urinary tract. Cavitation, the violent growth and collapse of microscopic bubbles, may be an important mechanism in both stone fragmentation and renal tissue damage during ESWL. In water, a conventional lithotripter generates a cavitation field in a cylindrical volume, /spl sim/1 cm wide/spl times/10 cm long. A dual-reflector lithotripter, consisting of two identical spark-gap lithotripters facing each other and firing simultaneously, creates a more localized cavitation field, /spl sim/3 cm wide/spl times/5 cm long. Stone breakage at the focus, and hemolysis, 2-cm from the focus, were assessed using both conventional lithotripsy (CL) and dual-reflector lithotripsy (DRL). Following exposure to 100 shots of DRL, the number of stone fragments >1.5 mm were 17.3/spl plusmn/3.9 at 18 kV, 5.3/spl plusmn/2.8 at 15 kV and 3/spl plusmn/1.7 at 12 kV. Following exposure to 200 shots of CL, the number of stone fragments >1.5 mm were 3.5/spl plusmn/1.9 at 18 kV, 1.6/spl plusmn/0.8 and at 15 kV, and 1.7/spl plusmn/1.1 at 12 kV. Following exposure to 100 shots of DRL, values for hemolysis were 8.1/spl plusmn/2.3% at 18 kV and 4.9/spl plusmn/1.1% at 15 kV. Following exposure to 200 shots of CL, values for hemolysis were 10.9/spl plusmn/3.4% at 18 kV and 7.8/spl plusmn/2.5% at 15 kV. These data demonstrate that, in vitro, DRL results in enhanced stone comminution at the focus and decreased damage to red blood cells a short distance from the focus.
{"title":"Increased damage to stones without increased damage to cells with a dual-reflector lithotripter","authors":"D. Sokolov, M. Bailey, F. Pulvermakher, L. Crum","doi":"10.1109/ULTSYM.2000.921593","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921593","url":null,"abstract":"Extracorporeal shock wave lithotripsy (ESWL) is a commonly used clinical treatment to comminute kidney stones into tiny fragments that can be expelled through a patient's urinary tract. Cavitation, the violent growth and collapse of microscopic bubbles, may be an important mechanism in both stone fragmentation and renal tissue damage during ESWL. In water, a conventional lithotripter generates a cavitation field in a cylindrical volume, /spl sim/1 cm wide/spl times/10 cm long. A dual-reflector lithotripter, consisting of two identical spark-gap lithotripters facing each other and firing simultaneously, creates a more localized cavitation field, /spl sim/3 cm wide/spl times/5 cm long. Stone breakage at the focus, and hemolysis, 2-cm from the focus, were assessed using both conventional lithotripsy (CL) and dual-reflector lithotripsy (DRL). Following exposure to 100 shots of DRL, the number of stone fragments >1.5 mm were 17.3/spl plusmn/3.9 at 18 kV, 5.3/spl plusmn/2.8 at 15 kV and 3/spl plusmn/1.7 at 12 kV. Following exposure to 200 shots of CL, the number of stone fragments >1.5 mm were 3.5/spl plusmn/1.9 at 18 kV, 1.6/spl plusmn/0.8 and at 15 kV, and 1.7/spl plusmn/1.1 at 12 kV. Following exposure to 100 shots of DRL, values for hemolysis were 8.1/spl plusmn/2.3% at 18 kV and 4.9/spl plusmn/1.1% at 15 kV. Following exposure to 200 shots of CL, values for hemolysis were 10.9/spl plusmn/3.4% at 18 kV and 7.8/spl plusmn/2.5% at 15 kV. These data demonstrate that, in vitro, DRL results in enhanced stone comminution at the focus and decreased damage to red blood cells a short distance from the focus.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114254064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921538
J. Yen, S.W. Smith
The current Duke real time volumetric scanner uses 40/spl times/40 arrays to scan a pyramidal volume comprised of 64 sector scans in the elevation direction. This scan format is primarily useful for cardiac imaging to avoid interference from the ribs. However, a real time rectilinear volumetric scan with a wider field of view close to the transducer could prove more useful for abdominal, breast, or vascular imaging. Therefore, several different sparse array patterns have been investigated for 5 MHz transducers through computer simulation using the Field II software of Jensen. The sparse arrays including a periodic array, a random array and a Mills cross array were compared to a fully sampled array which served as the "gold standard." The Mills cross design showed the best overall performance under the current system constraints. 94/spl times/94 Mills cross arrays including 372 elements have been fabricated. Preliminary real time rectilinear volumetric images of a wire phantom using the Mills Cross were obtained.
{"title":"Real time rectilinear volumetric imaging","authors":"J. Yen, S.W. Smith","doi":"10.1109/ULTSYM.2000.921538","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921538","url":null,"abstract":"The current Duke real time volumetric scanner uses 40/spl times/40 arrays to scan a pyramidal volume comprised of 64 sector scans in the elevation direction. This scan format is primarily useful for cardiac imaging to avoid interference from the ribs. However, a real time rectilinear volumetric scan with a wider field of view close to the transducer could prove more useful for abdominal, breast, or vascular imaging. Therefore, several different sparse array patterns have been investigated for 5 MHz transducers through computer simulation using the Field II software of Jensen. The sparse arrays including a periodic array, a random array and a Mills cross array were compared to a fully sampled array which served as the \"gold standard.\" The Mills cross design showed the best overall performance under the current system constraints. 94/spl times/94 Mills cross arrays including 372 elements have been fabricated. Preliminary real time rectilinear volumetric images of a wire phantom using the Mills Cross were obtained.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114450137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-10-22DOI: 10.1109/ULTSYM.2000.921626
J.F. Kucker, P. Carson, G. LeCarpentier, J. Fowlkes, C. Meyer
A Subvolume-based algorithm for Ultrasound REgistration (SURE) has been developed and tested using artificially deformed in vivo ultrasound scans. SURE works in two stages, using MIAMI Fuse software to determine a global, affine registration in the first stage before iteratively dividing the volume into subvolumes and computing local rigid registrations in the second stage. Connectivity of the entire volume is ensured by global interpolation using thin-plate splines (TPSs). To simulate sequential scans, a random nonlinear deformation was applied and both correlated and uncorrelated noise was added to 20 image volumes, each reconstructed from 60 to 120 evenly spaced B-scan slices. Registration using SURE reduced the average displacements of 1.5 and 2.0 mm in the artificially deformed volumes to 0.20 and 0.27 mm, respectively. Registration times were below 5 min on a 500 MHz CPU for an average data set size of 13 MB.
{"title":"Rapid image registration for 3D ultrasound compounding","authors":"J.F. Kucker, P. Carson, G. LeCarpentier, J. Fowlkes, C. Meyer","doi":"10.1109/ULTSYM.2000.921626","DOIUrl":"https://doi.org/10.1109/ULTSYM.2000.921626","url":null,"abstract":"A Subvolume-based algorithm for Ultrasound REgistration (SURE) has been developed and tested using artificially deformed in vivo ultrasound scans. SURE works in two stages, using MIAMI Fuse software to determine a global, affine registration in the first stage before iteratively dividing the volume into subvolumes and computing local rigid registrations in the second stage. Connectivity of the entire volume is ensured by global interpolation using thin-plate splines (TPSs). To simulate sequential scans, a random nonlinear deformation was applied and both correlated and uncorrelated noise was added to 20 image volumes, each reconstructed from 60 to 120 evenly spaced B-scan slices. Registration using SURE reduced the average displacements of 1.5 and 2.0 mm in the artificially deformed volumes to 0.20 and 0.27 mm, respectively. Registration times were below 5 min on a 500 MHz CPU for an average data set size of 13 MB.","PeriodicalId":350384,"journal":{"name":"2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121998180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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