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Computed Tomography Scan (CT Scan). Reid Coulombe. Brief Overview. CT Scan is used for diagnostics Doctors can ’ t always make a diagnosis CT scan use radiation to take X-Rays (slices) of the body CT scans take slices and turn into 3D images. History.

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Computed Tomography Scan (CT Scan)

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Computed tomography scan ct scan

Computed Tomography Scan(CT Scan)

Reid Coulombe


Brief overview

Brief Overview

  • CT Scan is used for diagnostics

  • Doctors can’t always make a diagnosis

  • CT scan use radiation to take X-Rays (slices) of the body

  • CT scans take slices and turn into 3D images


History

History

  • (early 1900’s) Alessandro Vallebona (Italy) had the idea of taking slices of the body for imaging (Tomography)

  • (1971) First CT Scan performed

  • (1974) CT Scanners installed

  • The inventors of the CT scan are credited as Godfrey Hounsfield (Britain) and Allan Comrack (South Africa).


State of the art

State of the Art

  • Widely prevalent

  • Over the past 20 years their use has increased greatly

  • Unnecessary CT Scans?

  • 3D imaging, and better clarity


Ct vs mri

CT vs MRI

  • CT Scans are usually cheaper

  • CT Scans are typically better at showing bones than MRI, but less effective at showing the soft tissue

  • CT scans take around 5 minutes, MRI’s usually take 30 minutes

  • CT scans can be harmful to the patient, while MRI’s have no known biohazards

  • Both used for for detecting cancer


Limitations

Limitations

  • In order for better clarity, more exposure to radiation is necessary

  • Human error in reading scans

  • Not very good at depicting soft tissue

  • In order to change the image plane you have to move the patient, unlike with MRI.


Future of ct scans

Future of CT Scans

  • Discovery CT750

  • Clearer Imaging due to Garnet detector material

  • Less radiation exposure

  • Faster


Bibliography

Bibliography

  • "CT Scan vs MRI." - Difference and Comparison. N.p., n.d. Web. 18 Sept. 2012. <http://www.diffen.com/difference/CT_Scan_vs_MRI>.

  • "X-ray Computed Tomography." Wikipedia. Wikimedia Foundation, 17 Sept. 2012. Web. 17 Sept. 2012. <http://en.wikipedia.org/wiki/X-ray_computed_tomography>.

  • "Read What Your Physician Is Reading on Medscape." EMedicineHealth. N.p., n.d. Web. 17 Sept. 2012. <http://www.emedicinehealth.com/ct_scan/article_em.htm>.

  • Healthcare News, GE. "World’s First High Definition CT Scanner Sets New CT Image Clarity Standard." GE, Apr.-May 2009. Web


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