Download PDF by Haim Azhari: Basics of Biomedical Ultrasound for Engineers

By Haim Azhari

ISBN-10: 0470465476

ISBN-13: 9780470465479

ISBN-10: 0470561475

ISBN-13: 9780470561478

A sensible studying device for construction a superb figuring out of biomedical ultrasound

Basics of Biomedical Ultrasound for Engineers is a established textbook that leads the beginner during the box in a transparent, step by step demeanour. in accordance with two decades of educating event, it starts with the main uncomplicated definitions of waves, proceeds to ultrasound in fluids and solids, explains the foundations of wave attenuation and mirrored image, then introduces to the reader the foundations of focusing units, ultrasonic transducers, and acoustic fields, after which delves into integrative functions of ultrasound in traditional and complicated clinical imaging strategies (including Doppler imaging) and healing ultrasound. Demonstrative scientific functions are interleaved in the textual content and exemplary questions with strategies are supplied on each bankruptcy. Readers will come away with the fundamental toolkit of information they should effectively use ultrasound in biomedicine and behavior examine.

  • includes a wide selection of themes inside biomedical ultrasound, from attenuation and eflection of waves to the intricacies of focusing units, transducers, acoustic fields, sleek clinical imaging suggestions, and therapeutics

  • Explains the most typical purposes of biomedical ultrasound from an engineering standpoint

  • offers need-to-know details within the type of actual and mathematical ideas directed at concrete purposes

  • Fills in holes in wisdom as a result of ever-increasing new functions of ultrasonic imaging and treatment

Basics of Biomedical Ultrasound for Engineers is designed for undergraduate and graduate engineering scholars; academic/research engineers strange with ultrasound; and physicians and researchers in biomedical disciplines who want an creation to the sphere. This e-book is intended to be “my first booklet on biomedical ultrasound” for an individual who's attracted to the field.Content:
Chapter 1 Waves—A common Description (pages 9–33):
Chapter 2 Waves in a One?Dimensional Medium (pages 35–53):
Chapter three Ultrasonic Waves in Fluids (pages 55–73):
Chapter four Propagation of Acoustic Waves in stable fabrics (pages 75–92):
Chapter five Attenuation and Dispersion (pages 93–105):
Chapter 6 mirrored image and Transmission (pages 107–131):
Chapter 7 Acoustic Lenses and Mirrors (pages 133–152):
Chapter eight Transducers and Acoustic Fields (pages 153–190):
Chapter nine Ultrasonic Imaging utilizing the Pulse?Echo approach (pages 191–231):
Chapter 10 unique Imaging strategies (pages 233–269):
Chapter eleven Doppler Imaging ideas (pages 271–285):
Chapter 12 safeguard and healing purposes (pages 287–312):

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Example text

56) and the field uS(− r ) describes the scattered field. Substituting into Eq. 57) This equation is called the Helmholtz equation. The object function cannot be derived explicitly from this equation; but since u0(r−) is assumed to be known and uS(r−) can usually be measured at defined locations around the object, we can write an implicit equation relating the measured filed uS(r−) to the object function F(r−). 59) As noted above, this equation cannot be solved directly. However, we can try to approximate uS(− r ) on the right-hand side of Eq.

42) Substituting Eq. 42) into Eq. 48) As can be noted, this equation is actually a Bessel differential equation of order zero. 49) where J0(kr) and Y0(kr) are Bessel functions of the first and second types respectively, and A and B are two constants. It should be noted that this solution is a complex function. 50) The exact solution (absolute value) and its approximation are graphically compared in Fig. 16. The solutions were calculated for an expanding cylindrical wave propagating in water (C = 1500 m/sec) with a frequency of 1 MHz.

The object function cannot be derived explicitly from this equation; but since u0(r−) is assumed to be known and uS(r−) can usually be measured at defined locations around the object, we can write an implicit equation relating the measured filed uS(r−) to the object function F(r−). 59) As noted above, this equation cannot be solved directly. However, we can try to approximate uS(− r ) on the right-hand side of Eq. 59). There are two known approximations for the scattered field which are given in the following.

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Basics of Biomedical Ultrasound for Engineers by Haim Azhari


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