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Computed Tomography Scan (CT Scan)

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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  1. Computed Tomography Scan(CT Scan) Reid Coulombe

  2. 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

  3. 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).

  4. State of the Art • Widely prevalent • Over the past 20 years their use has increased greatly • Unnecessary CT Scans? • 3D imaging, and better clarity

  5. 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

  6. 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.

  7. Future of CT Scans • Discovery CT750 • Clearer Imaging due to Garnet detector material • Less radiation exposure • Faster

  8. 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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