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Cai K, Rongqian Y, Li L, Xie Z, Ou S, Chen Y, Dou J. Tetralogy of Fallot Cardiac Function Evaluation and Intelligent Diagnosis Based on Dual-Source Computed Tomography Cardiac Images. Artif Organs 2015; 40:459-69. [PMID: 26496001 DOI: 10.1111/aor.12586] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ken Cai
- School of Information Science and Technology; Zhongkai University of Agriculture and Engineering; Guangzhou Guangdong China
- Department of Radiology; General Hospital of Guangzhou Military Command of PLA; Guangzhou Guangdong China
| | - Yang Rongqian
- Department of Biomedical Engineering; South China University of Technology; Guangzhou Guangdong China
| | - Lihua Li
- Department of Biomedical Engineering; South China University of Technology; Guangzhou Guangdong China
| | - Zi Xie
- Department of Biomedical Engineering; South China University of Technology; Guangzhou Guangdong China
| | - Shanxing Ou
- Department of Radiology; General Hospital of Guangzhou Military Command of PLA; Guangzhou Guangdong China
| | - Yuke Chen
- Department of Radiology; General Hospital of Guangzhou Military Command of PLA; Guangzhou Guangdong China
| | - Jianhong Dou
- Department of Radiology; General Hospital of Guangzhou Military Command of PLA; Guangzhou Guangdong China
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Shemonski ND, Ahn SS, Liu YZ, South FA, Carney PS, Boppart SA. Three-dimensional motion correction using speckle and phase for in vivo computed optical interferometric tomography. BIOMEDICAL OPTICS EXPRESS 2014; 5:4131-43. [PMID: 25574426 PMCID: PMC4285593 DOI: 10.1364/boe.5.004131] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/09/2014] [Accepted: 10/09/2014] [Indexed: 05/20/2023]
Abstract
Over the years, many computed optical interferometric techniques have been developed to perform high-resolution volumetric tomography. By utilizing the phase and amplitude information provided with interferometric detection, post-acquisition corrections for defocus and optical aberrations can be performed. The introduction of the phase, though, can dramatically increase the sensitivity to motion (most prominently along the optical axis). In this paper, we present two algorithms which, together, can correct for motion in all three dimensions with enough accuracy for defocus and aberration correction in computed optical interferometric tomography. The first algorithm utilizes phase differences within the acquired data to correct for motion along the optical axis. The second algorithm utilizes the addition of a speckle tracking system using temporally- and spatially-coherent illumination to measure motion orthogonal to the optical axis. The use of coherent illumination allows for high-contrast speckle patterns even when imaging apparently uniform samples or when highly aberrated beams cannot be avoided.
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Affiliation(s)
- Nathan D. Shemonski
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801,
USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
| | - Shawn S. Ahn
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
| | - Yuan-Zhi Liu
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801,
USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
| | - Fredrick A. South
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801,
USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
| | - P. Scott Carney
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801,
USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, Illinois 61801,
USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 West Green Street, Urbana, Illinois 61801,
USA
- Departments of Bioengineering, University of Illinois at Urbana-Champaign 1304 West Springfield Avenue, Urbana, Illinois 61801,
USA
- Department of Internal Medicine, University of Illinois at Urbana-Champaign, 506 South Mathews Avenue, Urbana, Illinois 61801,
USA
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Yu Y, Sun K, Xue H, Chen S, Yang J. Usefulness of real-time 3-dimensional echocardiography to identify and quantify left ventricular dyssynchrony in patients with Kawasaki disease. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2013; 32:1013-1021. [PMID: 23716523 DOI: 10.7863/ultra.32.6.1013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVES The role of left ventricular (LV) dyssynchrony in Kawasaki disease is unknown. This study sought to establish values for real-time 3-dimensional (3D) echocardiographically derived LV dyssynchrony parameters and identify and quantify LV dyssynchrony in patients with Kawasaki disease. METHODS Forty patients hospitalized for Kawasaki disease were analyzed retrospectively, and 40 sex- and age-matched healthy control volunteers were also enrolled. The systolic dyssynchrony index (percentage of the cardiac cycle) from 16 and 12 LV segments on real-time 3D echocardiography was analyzed to calculate LV dyssynchrony (defined as the standard deviation of the time to reach the minimum systolic volume for 16 LV segments) according to a 17-segment model. We analyzed the 3D LV ejection fraction (LVEF), end-diastolic volume, and end-systolic volume in the patients with Kawasaki disease compared to the controls. RESULTS The 16-segment systolic dyssynchrony index ± SD was significantly higher in the patients with Kawasaki disease: 2.73% ± 0.96% compared to 2.01% ± 0.85% in the controls (P < .05). The 12-segment systolic dyssynchrony index in the patients with Kawasaki disease was 2.65% ± 0.93% compared to 1.98% ± 0.81% in the controls (P< .05). Patients with Kawasaki disease and an LVEF of less than 50% had a significantly higher systolic dyssynchrony index compared to patients with an LVEF of 50% or greater (2.89% ± 0.79% versus 2.26% ± 0.73%; P < .05). The LVEF measured by echocardiography was decreased in the patients with Kawasaki disease, and global systolic function was impaired. The LVEF measured by a biplane method was sufficiently related to the LVEF measured by echocardiography. CONCLUSIONS Real-time 3D echocardiography is a noninvasive and feasible method for identifying and evaluating LV dyssynchrony in children with Kawasaki disease. Left ventricular dyssynchrony is significantly impaired and related to LV systolic function in patients with Kawasaki disease.
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Affiliation(s)
- Yi Yu
- Department of Ultrasound, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Lee M, Park N, Lee S, Lee A, Jung J, Kim Y, Ko S, Kim H, Jeong S, Eom K. Comparison of echocardiography with dual-source computed tomography for assessment of left ventricular volume in healthy Beagles. Am J Vet Res 2013; 74:62-9. [DOI: 10.2460/ajvr.74.1.62] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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