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Iranian Journal of Medical Physics، جلد ۲، شماره ۳، صفحات ۶۷-۷۲
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عنوان انگلیسی Temperature Mapping Using Ultrasound Digital Images
چکیده انگلیسی مقاله Introduction: The success of hyperthermia depends on the accuracy of the temperature monitoring in the tumor and the surrounding normal tissue. In this study, the temperature changes were determined by computing the speckle displacement in the ultrasound digital images. Speckle tracking algorithm was used to compute the displacement. Materials and Methods: The experiment was performed on Tissue Mimicking (TM) phantoms. The imaging probe used was a commercial type linear array operating at 10 MHz. The speckle displacement along the axial direction was computed using Speckle Tracking method and the temperature changes were obtained from the displacement data. Additionally, the temperature changes during the heating were invasively measured by NTC thermistors. The results of the two methods were compared against each other. Results: There was a good agreement between the Ultrasonic temperature estimation and the measurements made by the thermistors. The maximum error and the standard deviation obtained were 0.53 and 0.2°C, respectively. Discussion and Conclusion: Speckle tracking algorithm is capable of extracting motion information from both the ultrasounic digital images and radiofrequency (RF) echo signals. The temperature changes can be obtained from the displacement data. 
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نویسندگان مقاله a nurouzi | a. nurouzi
m.sc. in medical physics, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

محمدجواد ابوالحسنی | m j abolhasani
assistant professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran. research center for science amp;amp; technology in medicine, imam khomeini hospital, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

a تکاور | a. takavar
professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

محمدعلی عقابیان | m a oghabian
assistant professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran. research center for science amp;amp; technology in medicine, imam khomeini hospital, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

h قناعتی | h. ghanaati
associate professor, radiology dept., medical imaging center, imam khomeini hospital, tehran university of medical sciences , tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

نشانی اینترنتی http://ijmp.mums.ac.ir/article_8125.html
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/145/article-145-314859.pdf
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