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The third type of fingerprint reader is called an ultrasonic scanner, because it uses high-frequency sound waves (ultrasound) to "map" your finger instead of light. If you have a new Samsung smartphone, you'll probably find it has one of these built under the display, which you can use ...
"Acoustic 'superlens' could mean finer ultrasound scans." New Scientist. January 2008. (Oct. 13, 2009)http://www.newscientist.com/article/dn13156-acoustic-superlens-could-mean-finer-ultrasound-scans.html Aliev, Ali E. et al. "Mirage effect from thermally modulated transparent carbon nanotube ...
At 18, Katie Stubblefield lost her face. At 21, she became the youngest person in the U.S. to undergo the still experimental surgery. Follow her incredible story.
Ultrasound scanner:An ultrasound signal is used to record the echo the fingerprint creates, as ridges and valleys create different echoes. This scanner does not need to be in direct contact with the finger to get a reading and also has the benefit of reading in a more three-d...
Ultrasound of the pelvis In some cases, you may need to drink fluids until one hour before your test to fill your bladder. Do not empty your bladder until after the test. Obstetric ultrasound No special pre-test prep is necessary. Mammograms Please try to get your prior mammogram films and...
I understand that you wish to remove the skull area in order to isolate the tumour from the MRI scans but are facing issues with it. To isolate and remove everything except the tumor (assuming the bright white spot) from the MRI image, it is required to focus on...
Ultrasound scanner:An ultrasound signal is used to record the echo the fingerprint creates, as ridges and valleys create different echoes. This scanner does not need to be in direct contact with the finger to get a reading and also has the benefit of reading in a more three-dimensional manner...
The first ultrasound scans were devastating. In grainy black and white, doctors peeking into the wombs of pregnant women in Brazil could see trouble. The brains of their tiny patients weren’t keeping pace with the rest of their growth. And something was badly wrong. The brain’s inner ...