• Complex
  • Title
  • Author
  • Keyword
  • Abstract
  • Scholars
Search

Author:

Wang, Diya (Wang, Diya.) | Ma, Quanlong (Ma, Quanlong.) | Wang, Qiao (Wang, Qiao.) | Fan, Yan (Fan, Yan.) | Lu, Shukuan (Lu, Shukuan.) | Su, Qiang (Su, Qiang.) | Zhong, Hui (Zhong, Hui.) | Wan, Mingxi (Wan, Mingxi.) (Scholars:万明习)

Indexed by:

SCIE Scopus Web of Science

Abstract:

Purpose Owing to acoustic-pressure dependence, amplitudes of backscattered-echoes of encapsulated microbubbles (MBs) are unavoidably regulated by an uneven acoustic field, resulting in the misestimation of hemodynamics in conventional amplitude-coding dynamic contrast-enhanced ultrasound (DCEUS) with focused pulse transmission. This study aimed to investigate the feasibility and performance of Nakagami statistical-feature parametric imaging to recover the above misestimation. Methods Logarithmic Nakagami parameter (m)-coding DCEUS scheme was investigated via simulation and in vitro MB phantoms as well as in vivo kidney-perfusion experiments of four rabbits in the uneven acoustic fields with two different focal depths. In vivo tissue artifacts for m estimation were suppressed by pulse-inversion second-harmonic imaging and its robustness was enhanced by multiscale moment-estimation strategy. Time-Nakagami-m curves and the corresponding perfusion metrics of intensity and volume were calculated from the logarithmic m-coding DCEUS images within the prefocal and focal regions. These curves and metrics were further compared with the perfusion curves and metrics estimated from the conventional amplitude-coding images within the same regions. Results Compared with amplitudes of nonlinear scattering MB echoes, their logarithmic m values were relatively independent of the changes in acoustics pressures. Compared with the fixed-scale moment-estimation, the perfusion intensity estimated from logarithmic m-coding DCEUS scheme using multiscale statistical moment-estimation had smaller differences between the prefocal and focal regions. The differences of perfusion intensity induced by an uneven acoustic field decreased to 3.47% +/- 1.58 %. The differences decreased by the logarithmic m-coding DCEUS scheme were further regulated by threshold values of m estimation. Conclusions The logarithmic m-coding DCEUS scheme could recover the underestimated MB backscattered-echoes and the misestimated perfusion intensity induced by the uneven acoustic field. The scheme had the potential to weaken the limitation of microvasculature identification and hemodynamic characterization marked by MBs within tissues or tumors in the uneven acoustic field.

Keyword:

contrast-enhanced ultrasound focused acoustic field hemodynamic Nakagami parameter

Author Community:

  • [ 1 ] [Wang, Diya]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 2 ] [Ma, Quanlong]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 3 ] [Wang, Qiao]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 4 ] [Lu, Shukuan]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 5 ] [Zhong, Hui]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 6 ] [Wan, Mingxi]Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China
  • [ 7 ] [Fan, Yan]Alliance Franco Chinoise, Montreal, PQ, Canada
  • [ 8 ] [Su, Qiang]Captial Med Univ, Dept Oncol, Beijing Friendship Hosp, Beijing 100050, Peoples R China

Reprint Author's Address:

  • H. Zhong;;Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’ an Jiaotong University, Xi’ an, China;;email: bmezhonghui@mail.xjtu.edu.cn;;M. Wan;;Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’ an Jiaotong University, Xi’ an, China;;email: mxwan@mail.xjtu.edu.cn;;Q. Su;;Department of Oncology, Beijing Friendship Hospital Captial Medical Unviersity, Beijing, China;;email: bjsq1978@163.com;;

Show more details

Related Keywords:

Source :

MEDICAL PHYSICS

ISSN: 0094-2405

Year: 2022

Issue: 4

Volume: 49

Page: 2452-2461

4 . 0 7 1

JCR@2020

ESI Discipline: CLINICAL MEDICINE;

ESI HC Threshold:6

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

FAQ| About| Online/Total:1500/203903624
Address:XI'AN JIAOTONG UNIVERSITY LIBRARY(No.28, Xianning West Road, Xi'an, Shaanxi Post Code:710049) Contact Us:029-82667865
Copyright:XI'AN JIAOTONG UNIVERSITY LIBRARY Technical Support:Beijing Aegean Software Co., Ltd.