World of Transducers by Giuliana Herrera https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c en-us 2022-12-14 02:35:01 UTC 2024-04-01 00:14:26 UTC hello@padlet.com https://padlet.net/icons/png/1f9d0.png gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420027164 2022-12-14 02:48:45 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420027164 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420038020 2022-12-14 03:00:59 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420038020 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420044321 2022-12-14 03:08:11 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420044321 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420047916 2022-12-14 03:12:15 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420047916 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420050041 2022-12-14 03:14:47 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420050041 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420051397 2022-12-14 03:16:28 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420051397 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420052285 2022-12-14 03:17:39 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420052285 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420055775 A transducer is any device that converts one form of energy into another. They have two functions: during transmission, electrical energy from the system is converted into sound. During reception, the reflected sound pulse is converted into electricity.]]> 2022-12-14 03:22:55 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420055775 There are six types of transducers: gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420058916 1. Mechanical
2. Linear Phased Arrays
3. Annular Phased Arrays
4. Linear Sequential Arrays
5. Convex, Curved, or Curvilinear Arrays
6. Vector Arrays]]> 2022-12-14 03:27:28 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420058916 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420068420 An ultrasound transducer converts electrical energy into mechanical (sound) energy and back again, based on the piezoelectric effect. It is the hand-held part of the ultrasound machine that is responsible for the production and detection of ultrasound waves.]]> 2022-12-14 03:40:57 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420068420 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420071098 Phased Array always means "adjustable" or "multi-focus."]]> 2022-12-14 03:44:48 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420071098 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420071365 This transducer is named after the piezoelectric crystal arrangement which is called phased array and it is the most commonly used crystal.

Phased Array transducer has a small footprint and low frequency (its central frequency is 2Mhz – 7.5Mhz). 
]]> 2022-12-14 03:45:12 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420071365 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420072011 Whenever the crystal in any single crystal transducer breaks, the entire image is lost.]]> 2022-12-14 03:46:22 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420072011 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420079571 Crystals: Only one active element. The shape resembles a coin.
Image Shape: Fan or sector shaped
Beam Steering: Mechanical Steering
Beam Focusing: Fixed focal depth is known as conventional, mechanical, or fixed focusing.
Damaged PZT Crystal: The entire image is lost when the crystal malfunctions.]]> 2022-12-14 03:58:48 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420079571 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420081204 Crystals: As many as 100 to 300. Width of each is 1/4 to 1/2 of the sound's wavelength.
Image Shape: Fan or sector-shaped
Beam Steering: Electronic steering process called phasing
Beam Focusing: Focused electronically.
Damaged PZT Crystal: Inconsistent or erratic beam steering and focusing.]]> 2022-12-14 04:01:49 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420081204 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420082737 Crystals: Disc-like and it comprises of multiple ring-shaped elements with a common center.
Image Shape: Fan or sector-shaped
Beam Steering: Mechanical steering
Beam Focusing: multiple transmit focal zones create each scan line of the image.
Damaged PZT Crystal: Only a portion of the image is lost. Appears as a horizontal band of dropout at a particular depth.]]> 2022-12-14 04:04:45 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420082737 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420121168 Crystals: 120 to 250 rectangular-shaped strips of piezoelectric material. Each crystal is about 1 wavelength in width. The array is large, up to 10 cm long.
Image Shape: Rectangular shape
Beam Steering: A small group of crystals are fired simultaneously to create each sound beam.
Beam Focusing: Electronic Transmit focusing
Damaged PZT Crystal: Only the portion of the image extending directly below the damaged element is affected.]]> 2022-12-14 05:10:25 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420121168 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420124597 Crystals: 120 to 250 rectangular shaped strips of piezoelectric material. Each crystal is 1 wavelength in width
Image Shape: Blunted sector-shaped
Beam Steering: Some, but not all, of the crystals are fired simultaneously to create each sound beam.
Beam Focusing: Electronic focusing or dynamic receive focusing.
Damaged PZT Crystal: Only the portion of the image directly below the damaged element is affected.]]> 2022-12-14 05:14:57 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420124597 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420126759 Crystals: 120 to 250 rectangular-shaped strips arranged side by side in a line.
Image Shape: Trapezoidal images
Beam Steering: Electronic Steering
Beam Focusing: Electronic Focusing
Damaged PZT Crystal: N/A]]> 2022-12-14 05:18:36 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420126759 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420141309 2022-12-14 05:44:51 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420141309 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420146925 2022-12-14 05:55:03 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420146925 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420153766 2022-12-14 06:07:51 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420153766 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420159176 2022-12-14 06:17:19 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420159176 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420164393 2022-12-14 06:25:47 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420164393 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420168925 2022-12-14 06:33:10 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420168925 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420170982 Moore, A. (2022, April 28). Ultrasound Transducer Types and How to Select the Right Transducer. LBN Medical. Retrieved December 13, 2022, from https://lbnmedical.com/ultrasound-transducer-types/ ]]> 2022-12-14 06:36:35 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420170982 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420171699 Bell, D. J. (2020, December 22). Ultrasound Transducer. Radiopaedia Blog RSS. Retrieved December 13, 2022, from https://radiopaedia.org/articles/ultrasound-transducer ]]> 2022-12-14 06:37:54 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420171699 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420172652 Edelman, S. K. (2012). Understanding Ultrasound Physics (Fourth). ESP Ultrasound. ]]> 2022-12-14 06:39:33 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420172652 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420173100 2022-12-14 06:40:25 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420173100 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420174111 2022-12-14 06:41:53 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420174111 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420174642 2022-12-14 06:42:56 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420174642 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420175238 2022-12-14 06:44:01 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420175238 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420175903 2022-12-14 06:44:54 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420175903 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420179498 2022-12-14 06:51:17 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420179498 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420179765 2022-12-14 06:51:49 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420179765 gherrera021 https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420180714 2022-12-14 06:53:22 UTC https://padlet.com/gherrera021/lvkz1bjg3ifcfr7c/wish/2420180714