NDLI: Decompression Studies Using Ultrasonic Imaging of Bubbles

Content Provider	IEEE Xplore Digital Library
Author	Mackay, R. Stuart Rubissow, George
Copyright Year	1964
Abstract	Single bubbles ranging down in size to under 1 ¿m (less than capillary size) can be noticed, localized, and measured in ultrasonic images of intact subjects using 7.5 MHz ultrasound for which the wavelength is 200 ¿m. Subjects included humans, fish, and guinea pigs. A combined brightness modulation and deflection display was most effective. Bubble reality during decompression and association with symptoms has been demonstrated, as have asymptomatic bubbles, a tendency for bubble formation in fat, recompression bubble showers, and decompression without diving tables. In guinea pigs there were age and male-female differences in susceptibility. Adjacent tissue inert gas pressure, supersaturation, and time constant can be measured by adjusting ambient pressure until bubbles cease to grow. Present data generally favor a supersaturation rather than a phase equilibration model for bends onset. An increase in allowable supersaturation was observed when decompression was to altitude rather than to sea level. Goldfish were seen to survive bubbling that would kill the mammals studied, and some simultaneous observations by light and sound were made in transparent fish.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	8
File Size	7980790
Starting Page	537
Ending Page	544
File Format	PDF
ISSN	00189294
Volume Number	BME-25
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1978-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultrasonic imaging Sea measurements Marine animals Size measurement Ultrasonic variables measurement Wavelength measurement Humans Brightness Displays Pressure measurement
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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