Tag: Ultrasound imaging
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Ultrasound vs. X-rays, what are the differences?
Both ultrasound and X-rays are used in medical diagnosis. We look at the differences in their physical properties and the applications differences between the two as applied in medical diagnosis. Table 1: Physical Property differences between Ultrasound and X-rays Property Ultrasound X-rays Wave type Longitudinal Electromagnetic Transmission requirement of medium Elastic No medium is required…
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Ultrasound Scanning Techniques
Introduction Imaging systems employ pulsed ultrasound or the pulsed Doppler mode. The instrumentation system consists of: The display can be in several different modes e.g. Generation and Detection of Ultrasound The physical mechanism normally used to generate and detect ultrasonic waves is the piezoelectric effect exhibited by certain crystalline materials which have the property to…
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How Ultrasound Measurements are used in Medical Diagnosis
Introduction The application of ultrasonic in medical field is based on sonar principle as used by bats, anglers with fish detectors, and ships at sea. This is a totally non-invasive procedure. Acoustic waves are easily transmitted in water and are reflected from an interface according to change in the acoustic impedance. All tissues of our…
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Introduction to Medical Diagnostic Techniques
Diagnostic techniques are investigations and tests performed on patients with the intention to identify the cause of illness. The ultrasound is sonic energy at frequencies above the audible range. The most widely used applications of ultrasound in diagnostic medicine involve the non-invasive imaging of internal organs or structures of the body. Such imaging can provide…