:: ImPACT
Did you know .?.
CT scanning is a medical imaging technology; established in Britain in 1971 , it can now be found world-wide
ImPACT: Imaging Performance Assessment of CT Scanners
This is the web site of the ImPACT group.
ImPACT was the UK's CT scanner evaluation centre for over 25 years. They provided a wide range of CT scanner related services to the National Health Service and other providers of healthcare; primarily in the UK, but the knowledge and information has benefitted users and patients around the world.
What is a CT scanner ?
A CT (or CAT) scanner produces x-ray images of 'slices' through the body. See our patient's guide for more information.
On this site, we give you an idea of the work undertaken by the group, as well as providing ongoing access to some of our many resources for use by all people involved in CT scanning.
Some of the most current topics and recent additions are listed below.
:: hot stuff
celebrating CT
- Next year's BIR president's conference is a tribute to Godfrey Hounsfield and 40 years of clinical CT scanning.
if you have any hot topics we should know about, please contact us
:: ImPACT news
:: NICE guidance issued
Jan 2012 ** DG3 computed tomography scanners for cardiac imaging ... **
New NICE guidance on
‘New generation cardiac CT scanners (Aquilion ONE, Brilliance iCT, Discovery CT750 HD and Somatom Definition Flash) for cardiac imaging in people with suspected or known coronary artery disease in whom
imaging is difficult with earlier generation CT scanners.’
has been published on the NICE website .
ImPACT responded to the open invitation given on the web page to register as a stakeholder. As such ImPACT attended one of the stakeholder meetings and submitted comments.
Those interested in this guidance are strongly encouraged to read the comments provided to the review team.
Summarised responses to all stakeholder comments on this report are given on this page:
All projects are open to stakeholder registration within certain criteria: please see further details here.
:: 40 Years of CT
June 2011
** 'History of CT' page **
To celebrate the 40th anniversary of the first clinical CT scan, which took place at Atkinson Morley's Hospital in London on 1st October 1971, we have added a 'History of CT' page to this site.
:: CTDosimetry version 1.0.4 available
May 2011
A new version of CTDosimetry is now available to download.
The latest version of the spreadsheet is available for download on the CTDosimetry page.
ImPACT are changing the model for incorporation of new data into the spreadsheet. Rather than relying on our evaluations for data we are working with the Institute of Physics and Engineering in Medicine's Diagnostic Radiology Special Interest Group (IPEM DRSIG) to update the data. Read how you can contribute data on the CTDosimetry page.
:: team news
Sue Edyvean - head of the ImPACT group - celebrates 25 years working for the NHS. Congratulations Sue !
::update on our current status
October 2011
ImPACT was closed down from 29th September 2011 due to ceasation of central funding
This web site will remain open but will not be regularly maintained.
We will provide any updates if anything changes.
Please check back to this site when you can. Otherwise do please drop us a line
Emails sent to personname"at"impactscan.orgwill be forwarded to the appropriate people.
General emails (e.g. impact@@impactscan.org) will only be reviewed infrequently.
It would be particularly interesting to hear how our work has helped you over the years.
Thanks to all those who have already written to express their support for both the work and the staff involved.
:: finding your way around this site
Please follow the links in the navigation pane on the right hand side of each page to get to the area in which you are interested.
If you are not sure what you are looking for, please search our site :
Due to our current status and hence the long delay in responding to your contact messages, it will be quicker for you if you can find the answer on the site
:: web site status
broken links to reports - an update
We are aware that there were problems with the links from our site to the archive of published reports. This was due to closure of PASA and the transfer of their copywrite material. We have now updated our links and they should work. However, there may still be issues arising as responsibility for maintaining CEP reports passes from NHS PASA to the Department of Health. You can now go to our report list and select the report you want to download.
Apologies for any inconvenience that this may have caused you.
website issues
Due to the closure of the ImPACT group, this site is now only infrequently updated and maintained
There are no other known issues with the web site at present. Please let us know if you find problems with the site.
:: latest topics
- Advanced CT scanners for coronary angiography market review
- Dyna-Vision mobile real-time remote patient monitor evidence review
- CTDosimetry version 1.0.4
- report on rsna 2007
- ukrc 2007 presentations
- latest comparison reports
- IPEM Report 77 has been replaced
- ImPACT's CT dosimetry spreadsheet
- RCR 'technical standards for ct' document
- NRPB ct dose and usage survey report
- ...more...
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