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基于AR谱模型的超声频移温度相关性

Keywords: 热疗,无损测温,超声回波频移,AR谱分析

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Abstract:

基于生物组织离散随机介质模型,对猪肝水浴加热过程中基于AR谱模型的超声频移进行了分析,通过建立AR模型来计算回波信号的功率谱并对研究结果进行了统计分析.结果表明:猪肝组织超声回波频率随温度的改变而变化.在20℃下猪肝组织超声回波最大频率平均为(3.55±0.09)MHz;在30℃下为(3.14±0.12)MHz;在40℃下为(2.87±0.11)MHz;在50℃下为(2.79±0.10)MHz;在60℃下为(2.72±0.08)MHz.随着温度的升高,频率降低.通过分析猪肝散射体在不同温度下的频率进行组织定征,以期达到监测微波消融过程中的消融区域,为临床监测微波消融提供一种可行的方法.

References

[1]  ARTHUR R M,STRAUBE W L,TROBAUGH J W,et al.Non-invasive estimation of hyperthermia temperatures with ultrasound[J].International Journal of Hyperthermia,2005,21(6):589-600.
[2]  WU S C,BAI Y P.Current situation home and abroad in the researches of noninvasive temperature estimation by ultrasound in cancer hyperthermia[J].Chinese Journal of Biomedical,2004,17:3424-3425.
[3]  MILLER N R,BAMBER J C,HAAR G R.Ultrasonic temperature imaging for the guidance of thermal ablation therapies:in vitro results[C]∥Ultrasonic Symposium.Washington,D.C.;IEEE,2002:1365-1368.
[4]  MILLER N R,BAMBER J C,MEANEY P M.Fundamental limitations of noninvasive temperature imaging by means of ultrasound echo strain estimation[J].Ultrasound Med Biol,2002,28(13):19-33.
[5]  YANG C L,ZHU H,WU S C.Correlations between Bmode ultrasonic image texture features and tissue temperature in microwave ablation[J].Journal of Ultrasound in Medicine.2010,29:1787-1799.
[6]  LIU H L,LI M L,SHIH T C,et al.Instantaneous frequency-based ultrasonic temperature estimation during focused ultrasound thermal therapy[J].Ultrasound Med Biol,2009,35(16):47-61.
[7]  YU N C,LU D S,RAMAN S S.Hepatocellular carcinoma:microwave ablation with multiple straight and loop antenna clusters-pilot comparison with pathologic findings[J].Radiology,2006,239:269-275.
[8]  LIANG P,WANG Y.Microwave ablation of hepatocellular carcinoma[J].Oncology,2007,72(Suppl 1):124-131.
[9]  MARTIN R C,SCOGGINS C R,MCMASTERS K M.Microwave hepatic ablation:initial experience of safety and efficacy[J].J Surg Oncol,2007,96:481-486.
[10]  LIANG P,WANG Y,DONG B.Malignant liver tumors:treatment with percutaneous microwave ablationcomplications among cohort of 1136 patients[J].Radiology,2009,251(3):933-940.
[11]  BRAND S,WEISS E,LEMOR R.High frequency ultrasound tissue characterization and acoustic microscopy of intracellular changes[J].Ultrasound in Medicine&Biology,2009,34(9):1396-1407.
[12]  WEAR K A,WAGNER R F,INSANA MF,HALL T J.Application of autoregressive spectral analysis to cepstral estimation of mean scatterer spacing[J].IEEE Trans Ultrason Ferroelectr Freq Control,1993,40(1):50-58.
[13]  WENG L,REID J M,SHANKAR P M,et al.Nonuniform phase distribution in ultrasound speckle analysis-Part I:background and experimental demonstration[J].IEEE Trans Ultrason Ferroelectr Freq Control,1992,39(3):352-358.
[14]  SEIP R,EBBINI E.Noninvasive estimation of tissue temperature response to heating fields using diagnostic ultrasound[J].IEEE Trans Biomed Eng,1995,42(8):828-839.
[15]  EUGENE P,KHIZHNYA K,MARVIN C.Heating patterns in biological tissue phantoms caused by millimeter wave electromagnetic irradiation[J].IEEE Transactions on Biomedical Engineering,1994,41(9):865-873.
[16]  SEHGAL C M,BROWN G M,BAHN R C,et al.Measurement and use of acoustic nonlinearity and sound speed to estimate composition of excised livers[J].Ultrasound Med Biol,1986,12(11):865-874.
[17]  PEREIRA W A,BRIDAL S L,CORON A,et al.Singular spectrum analysis applied to backscattered ultrasound signals from in vitro human cancellous bone specimens[J].IEEE Trans Ultrason Ferroel Freq Cont,2004,51:302-312.
[18]  RALF S,EBINI E S.Noninvasive estimation of tissue temperature response to heating fields using diagnostic ultrasound[J].IEEE Transactions on Biomedical Engineering,1995,42:828-839.
[19]  KINSLER L E,FREY A R,COPPENS A B,et al.Fundamentals of acoustics[M].New York:Wiley,1982:1107.
[20]  RAJAGOPALAN B,GREENLEAF J F,THOMAS P J,et al.Ultrasonic tissue characterization[M].Washington,D.C.:U S GPO NBS Spec Pub,1979:227-233.
[21]  CONNOR C W,HYNYNEN K.Bio-acoustic thermal lensing and nonlinear propagation in focused ultrasound surgery using large focal spots:a parametric study[J].Phys Med Biol,2002,47(11):1911-1928.
[22]  WENG L,REID J M,SHANKAR P M,et al.Nonuniform phase distribution in ultrasound speckle analysis—PartⅡ:parametric expression and a frequency sweeping technique to measure mean scatterer spacing[J].IEEE Trans Ultrason Ferroelec Freq Contr,1992,39(3):360-365.
[23]  XU S,LIU Z L,QUAN H Y.Eliminate false peak of Burg spectrum estimation based on EMD[C]∥2010 2nd International Conference on Advanced Computer Control(ICACC 2010).Shenyang:IEEE,2010:344-347.
[24]  AI S F,LI H,FU L H.Angle domain average and autoregressive spectrum analysis based gear faults diagnosis[C]∥2009 International Joint Conference on Artificial Intelligence(JCAI).Hainan:IEEE,2009:659-662.

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