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Noninvasive estimation of temperature elevations in biological tissues using acoustic nonlinearity parameter imaging


, : Noninvasive estimation of temperature elevations in biological tissues using acoustic nonlinearity parameter imaging. Ultrasound in Medicine & Biology 34(3): 414-424

A method for noninvasively imaging temperature would assist the development of hyperthermia. In this study, the relationships between the acoustic nonlinearity parameters and the temperatures in porcine fat and liver were obtained. The temperature elevations induced by ultrasound irradiation of porcine fat and liver were then derived inversely from acoustic nonlinearity parameter imaging. These temperature elevations were compared with theoretical predictions and with those measured by a thermocouple. The temperature elevations at the focus in the fat and liver samples measured via a thermocouple were 21.1 +/- 0.8 degrees C and 15.7 +/- 0.6 degrees C, respectively, which coincided with those obtained by acoustic nonlinearity parameter imaging (22.0 +/- 1.4 degrees C in fat and 16.9 +/- 1.1 degrees C in liver). These may be compared with the theoretical predictions of elevations of 24.0 degrees C in fat and 19.7 degrees C in liver. The results of this study show that acoustic nonlinearity imaging may be a novel method for temperature evaluation in hyperthermia. (E-mail: xzliu@nju.edu.cn).

US$19.90

PMID: 18187251

DOI: 10.1016/j.ultrasmedbio.2007.09.006


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Atalay, A.; Koyuncu, H.; Koeseler, A.; Ozkan, A.; Atalay, E.O., 2007: Hb Beograd beta 121(GH4)Glu -> Val,Gaa -> Gta in the Turkish population. Hb Beograd [beta 121(GH4) Glu -> Val, GAA -> GTA] is a rare variant first reported in Yugoslavia and then in Turkey, Australia and New Zealand. We report two further unrelated cases from Turkey. The importance of identifying Hb Beograd at th...

Cioce V.; Ferrari G.; Vicenzi E.; Biunno I.; Poggi A., 1988: Purification of a pdgf like growth factor released from m4 metastatic fibrosarcoma. Journal of Cellular Biochemistry Supplement (12 PART A): 137

Steere, A.C.; Malawista, S.E.; Hardin, J.A.; Ruddy, S.; Askenase, W.; Andiman, W.A., 1977: Erythema chronicum migrans and Lyme arthritis. The enlarging clinical spectrum. Thirty-two patients with the onset of erythema chronicum migrans, Lyme arthritis, or both in mid-1976 were studied prospectively. The skin lesion (24 patients) typically lasted about 3 weeks, beginning as a red macule or papule that expanded to fo...

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Fouladi, M.; Grant, R.; Baruchel, S.; Chan, H.; Malkin, D.; Weitzman, S.; Greenberg, M.L., 1998: Comparison of survival outcomes in patients with intracranial germinomas treated with radiation alone versus reduced-dose radiation and chemotherapy. Concern about long-term sequelae of irradiation has led to the use of adjuvant chemotherapy with lower dose irradiation in the treatment of intracranial germinomas. To assess the feasibility of this approach versus radiation only, the survival of...

Löfdahl, C.G.; Sigvaldasson, A.; Skoogh, B.E.; Svedmyr, N., 1989: Broxaterol, a new beta 2-adrenoceptor agonist compared to salbutamol in asthmatics, oral and inhalation treatment. Two double-blind, double-dummy, randomized, crossover studies were performed in 8 asthmatic patients to evaluate beta 2-adrenoceptor selectivity and potency of broxaterol compared to salbutamol. By oral route, a study with cumulatively increasing...

Weine, F.S., 1982: Case report: three canals in the mesial root of a mandibular first molar(?). Journal of Endodontics 8(11): 517-520

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