عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TL46j1j5bb
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Ultrasound tomography techniques and application to thermometry
نام عام مواد
[Thesis]
نام نخستين پديدآور
Nebeker, Jakob; Nebeker, Jakob
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
UC San Diego
تاریخ نشرو بخش و غیره
2012
یادداشتهای مربوط به پایان نامه ها
کسي که مدرک را اعطا کرده
UC San Diego
امتياز متن
2012
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
This work reports on the results of our work in developing Ultrasound Tomography for breast imaging and is divided into the following topics. First, we describe a new pulse- echo-based technique for creating detailed maps of sound beams and show results of the technique on a clinical ultrasound system. We map all A-Line beams and make quantitative measurements in the lateral and elevational plane, and quantify reflection and refraction caused by a cylinder of glycerin. Next, we explore our findings on ultrasound image compounding and enhancement of pulse echo data, and show 300% improvement in SNR achieved by compounding. We also show 2x resolution improvement by post-compounding spatial filtering using deconvolution and unsharp masking. Third, we detail the creation of images of local sound speed from reflection images, including extracting time of flight data and subsequent evaluation of sound speed images produced by measuring spatial resolution performance and contrast accuracy. We quantify resolution and contrast accuracy to 2.4mm and 1%. Finally, we report on a novel ultrasound thermometry method that exploits the sound speed variation of tissue with temperature to create highly-accurate temperature images. The results of this study show that ultrasound thermometry with sound speed tomography is feasible, and was accurate up to 0.29°C, for thermal monitoring in response to a local heat source, and has promise to be an excellent foundation for non-invasive, low-cost monitoring of hyperthermia in a clinical setting
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Nebeker, Jakob; Nebeker, Jakob
شناسه افزوده (تنالگان)
مستند نام تنالگان تاييد نشده
UC San Diego
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
