Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Prenatal sonography has no effect on the intellectual capacity of the developing child

13.04.2005


Scientists carrying out a major epidemiological study at Karolinska Institutet and Uppsala University have discovered that there is no clear correlation between routine ultrasonic scans and intellectual impairment.



“Fears have been expressed that sonography can lead to diminished intellectual capacity,” explains Helle Kieler, research scientist at Karolinska Institutet.

Previous epidemiological studies have shown that young men who had been exposed to in utero ultrasonic scans are more likely than other young men to be left handed; and that there is a correlation between left-handedness and reduced intellectual capacity in children born after a complicated pregnancy.


The new study, which is to be published on 13 April in the scientific journal Epidemiology, is based on data from approximately 180,000 boys born in the 1970s, when routine ultrasonic examinations of foetal development were first introduced in Sweden. Almost 20 years later, the young men were given intelligence tests on signing up for their military service. When researchers compared the boys who had been scanned with those that had not, it transpired that intellectual capacity was lower in those who were exposed to ultrasound in during gestation. The differences, however, were small and other influences on the results could not be ruled out.

To control for such (unquantified) factors, the scientists then conducted a smaller-scale analysis of brothers. This enabled them to confirm that there was nothing to suggest that the brother who had been exposed to in utero ultrasonic radiation was intellectually inferior to the one who had not.

“The results are reassuring in terms of the risk that routine prenatal sonography has lasting effects on the development of the foetal brain,” says Ms Kieler. “It is important to remember, however, that the study reflects the effects of how ultrasound was used in the 1970s. Scanning procedures have changed since then, and children born today have generally been exposed to more ultrasonic radiation than those included in the study.”

Sabina Bossi | alfa
Further information:
http://www.ki.se

More articles from Health and Medicine:

nachricht Hot cars can hit deadly temperatures in as little as one hour
24.05.2018 | Arizona State University

nachricht 3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>