bannerHON
img
HONnews
HONnews
img PATIENT / PARTICULIER img PROFESSIONNEL DE SANTE img WEBMESTRE img
img
 
img
HONcode sites
Khresmoi - new !
HONselect
News
Conferences
Images

Themes:
A B C D E F G H I
J K L M N O P Q
R S T U V W X Y Z
Browse archive:
2019: J J M A M F J
2018: D N O S A J

 
  Other news for:
Neoplasms
 Resources from HONselect
Radiation Doses From CT Scans Vary Widely

By Steven Reinberg

MONDAY, Jan. 7, 2019 (HealthDay News) -- CT scans diagnose many serious conditions and illnesses, but they expose patients to levels of radiation that aren't always consistent and may be harmful, a new study finds.

The large differences in the doses of radiation patients are exposed to appear to be caused by who is doing the scanning and not differences in patients or equipment, researchers found.

It should be possible, the researchers said, to standardize how the scans are set, to avoid giving patients too much radiation, which can increase their risk of cancer.

According to the study, radiation doses vary by patients, hospitals and countries. In many cases, radiation could be cut by 50 percent without reducing the quality of the image or its diagnostic accuracy.

A team lead by Dr. Rebecca Smith-Bindman, a professor in the department of radiology and biomedical imaging epidemiology and biostatistics at the University of California, San Francisco, analyzed dose data for over 2 million CT scans from 151 institutions in seven countries.

The study included scans of the abdomen, chest and head done between November 2015 and August 2017.

The investigators found that patient characteristics, type and make of scanner, and type of hospital where the scan was done had little effect on differences in the amount of radiation used.

For example, after taking into account patient factors, a fourfold range in radiation doses still existed in abdominal scans. Similar variations were found for chest and combined chest-and-abdomen scans.

But when Smith-Bindman's group adjusted for technical factors -- how the scanners were used by the medical staff -- the variations in doses nearly disappeared.

The report was published Jan. 2 in the journal BMJ.

The findings suggest that optimizing doses to a consistent standard is possible, the researchers said in a journal news release. They recommended that more education is needed and that optimum target doses should be set.

More information

Harvard University Medical School has more on radiation from scans.

SOURCE: BMJ, news release, Jan. 2, 2019

Copyright © 2019 HealthDay. All rights reserved. URL:http://consumer.healthday.com/Article.asp?AID=741139

Resources from HONselect: HONselect is the HON's medical search engine. It retrieves scientific articles, images, conferences and web sites on the selected subject.
Research Personnel
Set (Psychology)
Neoplasms
Thorax
Lead
The list of medical terms above are retrieved automatically from the article.

Disclaimer: The text presented on this page is not a substitute for professional medical advice. It is for your information only and may not represent your true individual medical situation. Do not hesitate to consult your healthcare provider if you have any questions or concerns. Do not use this information to diagnose or treat a health problem or disease without consulting a qualified healthcare professional.
Be advised that HealthDay articles are derived from various sources and may not reflect your own country regulations. The Health On the Net Foundation does not endorse opinions, products, or services that may appear in HealthDay articles.


Home img About us img MediaCorner img HON newsletter img Site map img Ethical policies img Contact