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CT

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by

Ana Flores

on 1 December 2014

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Transcript of CT

What is CT?
Large machines that have a circular magnet
Patient lies on the sliding radiographic table
The x-ray tube and electronic detectors circle the patient, results in cross sectional images
Coronary Artery Calcium Scoring
Reveals amount of calcified plaque.
CT Urography

References
http://www.radiologyinfo.org
http://www.impactscan.org/CThistory.htm
Bauer, J.S., Mueller, D.K., Virmani, S. "Quantitative CT to access Bone Mineral Density and Diagnostic tool for Osteoporosis and Related Fractures." Phillips Net Forum community. ND. 18 Nov. 2014
<http://clinical.netforum.healthcare.philips.com/us_en/Explore/White-Papers/CT/Quantitative-CT-to-assess-bone-mineral-density-as-a-diagnostic-tool-for-osteoporosis-and-related-fractures>
Celenk, Cetin, Celenk, Perzue.
Bone Density Measurment Under Computed Tomography
. January 2012. Pdf file.
<http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=18&ved=0CEwQFjAHOAo&url=http%3A%2F%2Fwww.intechopen.com%2Fdownload%2Fpdf%2F25703&ei=l8NxVOSrKsmWigK96ICAAw&usg=AFQjCNHxVfq98ugnF0IML5R3m8uQ4s9uow>
"CT Colonograpgy." RadiologyInfo.org. 16 May 2014. 19 Nov 2014.
<http://www.radiologyinfo.org/en/info.cfm?pg=ct_colo>
"FDA Clears GE's Revolution CT 256-Slice Scanner." Diagnostic and INternational Cardiology. 15 April 2014. 17 Nov 2014
<http://www.dicardiology.com/article/fda-clears-ge%E2%80%99s-revolution-ct-256-slice-scanner>
Rojahn, Susan Young. "CT Scanner Delivers Less Radiation." MT Technology Review. 7 Feb 2013. 19 Nov 2014
<http://www.technologyreview.com/news/510861/ct-scanner-delivers-less-radiation/>
Benefits and Risks
By: Ana, Mel & Tara
Class of 2017
What is
Computed Tomography (CT)? And what does it allows us to see!


Plaque builds up in the coronary arteries, which supply oxygen to the heart.
Build-up of plaque is also known as coronary artery disease (CAD).
Causes angina and may lead to heart attack.
To obtain images of the kidneys, ureters and bladder.
Detects kidney stones, bladder stones, hematuria , or cancer of the urinary tract.
Benefits:
Accurate
Painless and noninvasive
Cost Effective
Fast and simple
CT angiography
Coronary Angiography
Greatly used for looking at blood vessels and
tissue throughout the body organs.
A contrast dye containing idoine is injected through a catheter on the patient. This highlights areas of interest.
Aneurysms , blockages, and blood supply to various places and noted on such scans
For high risk candidates
To detect cancer before symptoms begin
Early diagnosis, decrease in deaths
Lung Cancer Screening
Risks:
Allergies to contrast
Patient size limitations

Quantitative Computed Tomography for Osteoporosis
Used to determine bone density's trabecular detail
More accurate than DEXA screening
Uses Housenfield units to measure bone density
Virtual Colonoscopy
Detects polyps or cancers in large intestine
Cheaper than colonoscopy
Uses low-dose CT scanning
Advancements in CT Technology
GE's Revolution CT Scanner
Cleared for use in USA On April 2014 by FDA
Lower dose
Can eliminate additional tests
Toshiba Medical Ct Scanners
Has five times more detectors than the average CT
Radiation decreased by 95%
Obtain quality images
GE's Revolution CT Scanner
Keywords
Gantry
Tomography
64 slice
How it Works
CT....the beginning
Current Technology
First scan on October 1, 1971
Produced an image with 80x80 matrix
Scan took 5 minutes
Produces images with 1024x1024 matrix
Scan takes less than 0.3 seconds
There are many benefits to CT, such as no over lapping of organs. This gives the Radiologist a clearer and larger view of the patients organ of interest. It's quick and non-invasive. Many physicians are able to rout their medical plan, surgeries etc. after viewing a CT scan of a patient.
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