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- Q229399 subject Q15207778.
- Q229399 subject Q7211675.
- Q229399 subject Q7348355.
- Q229399 subject Q8266666.
- Q229399 abstract "3D ultrasound is a medical ultrasound technique, often used in obstetric ultrasonography (during pregnancy), providing three-dimensional images of the fetus. 3D Ultrasound or also referred to as Phased Array Ultrasonics is also used extensively in the Non Destructuve Evaluation of materials for purity and failure assessment. Very useful in flaw detection and morphology.There are several different scanning modes in medical and obstetric ultrasound. The standard common obstetric diagnostic mode is 2D scanning. In 3D fetal scanning, however, instead of the sound waves being sent straight down and reflected back, they are sent at different angles. The returning echoes are processed by a sophisticated computer program resulting in a reconstructed three-dimensional volume image of the fetus's surface or internal organs, in much the same way as a CT scan machine constructs a CT scan image from multiple x-rays.3D ultrasound was patented by Olaf von Ramm and Stephen Smith at Duke University in 1987.Clinical use of this technology is an area of intense research activity especially in fetal anomaly scanning but there are also popular uses that have been shown to improve fetal-maternal bonding. 4D fetal ultrasounds are similar to 3D scans, with the difference associated with time: 4D allows a 3-dimensional picture in real time, rather than delayed, due to the lag associated with the computer constructed image, as in classic 3-dimensional ultrasound.If the system is used only in the Obstetrics Application, the ultrasound energy is limited by the manufacturer below FDA limits for obstetrical ultrasound, whether scanning 2, 3 or 4 dimensionally. (The FDA limit for obstetrical ultrasound is 94 mW/cm2.) While there has been no conclusive evidence for harmful effects of 3D ultrasounds on a developing fetus, there still remains controversy over its use in non-medical situations, and generally, the AIUM recommends that 3D ultrasounds should be undertaken with the understanding that a risk may exist.".
- Q229399 thumbnail 3dultrasound_20_weeks.jpg?width=300.
- Q229399 wikiPageExternalLink history1.html.
- Q229399 wikiPageExternalLink 3846525.stm.
- Q229399 wikiPageExternalLink ultrasound.
- Q229399 wikiPageExternalLink index.php.
- Q229399 wikiPageExternalLink ingehertz.html.
- Q229399 wikiPageWikiLink Q1057591.
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- Q229399 wikiPageWikiLink Q15207778.
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- Q229399 wikiPageWikiLink Q4744155.
- Q229399 wikiPageWikiLink Q5458993.
- Q229399 wikiPageWikiLink Q7083022.
- Q229399 wikiPageWikiLink Q7211675.
- Q229399 wikiPageWikiLink Q7348355.
- Q229399 wikiPageWikiLink Q8266666.
- Q229399 comment "3D ultrasound is a medical ultrasound technique, often used in obstetric ultrasonography (during pregnancy), providing three-dimensional images of the fetus. 3D Ultrasound or also referred to as Phased Array Ultrasonics is also used extensively in the Non Destructuve Evaluation of materials for purity and failure assessment. Very useful in flaw detection and morphology.There are several different scanning modes in medical and obstetric ultrasound.".
- Q229399 label "3D ultrasound".
- Q229399 depiction 3dultrasound_20_weeks.jpg.