ULTRASONOGRAPHY

Thyroid Ultrasound Physics

Feb 27, 2018 by in ULTRASONOGRAPHY Comments Off on Thyroid Ultrasound Physics

Figure. 2.1 Speed of sound . The speed of sound is constant for a specific material and does not vary with frequency. Speed of sound for various biological tissues is…

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Diffuse Thyroid Disease (DTD) and Thyroiditis

Feb 27, 2018 by in ULTRASONOGRAPHY Comments Off on Diffuse Thyroid Disease (DTD) and Thyroiditis

Thyroid gland Characteristic Size Measure sagittal × AP × transverse dimensions Unusual shape Note and measure extension of lobe(s) below clavicles, pyramidal lobe, and thyroglossal duct masses Echotexture Homogeneous or…

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Pediatric Ultrasound of the Neck

Feb 27, 2018 by in ULTRASONOGRAPHY Comments Off on Pediatric Ultrasound of the Neck

Figure 5.1 Goitrous thyroid in congenital hypothyroidism . Axial CT images (a–c) show a massively enlarged thyroid (arrows) in a 5-month-old with a TSH over 300. Full ultrasonic visualization of…

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Ultrasonography of the Parathyroid Glands

Feb 27, 2018 by in ULTRASONOGRAPHY Comments Off on Ultrasonography of the Parathyroid Glands

Figure 9.1 Superior parathyroid adenoma seen in longitudinal view. Indentation sign. (a) Upper PA, craniocaudal view, note indentation. (b) Upper PA, note indentation sign, and long pencil shape. (c) Small…

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Doppler Ultrasound

Feb 27, 2018 by in ULTRASONOGRAPHY Comments Off on Doppler Ultrasound

Figure. 3.1 Illustration of the Doppler shift . When a moving target reflects a sound, the frequency of the reflected sound wave is altered. The frequency is shifted up by…

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