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Medical Imaging Technologies

Medical Imaging Technologies. Medical Imaging. produces images of organs and tissues within the body for use in diagnosis and treatment . cost and effective use of technologies for diagnosis and treatment present a major challenge to health-care systems around the world . X-Ray.

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Medical Imaging Technologies

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  1. Medical Imaging Technologies

  2. Medical Imaging • produces images of organs and tissues within the body for use in diagnosis and treatment. • cost and effective use of technologies for diagnosis and treatment present a major challenge to health-care systems around the world.

  3. X-Ray • radiation that can penetrate skin and tissues but does not easily penetrate metals and bones

  4. X-Ray • Check for cancer, diagnose problems in organ systems, mammograms, observe size of heart or check structure of blood vessels • A beam of x-rays can be used to kill cancer cells • can cause changes and mutations to DNA

  5. Fluoroscopy • uses a continuous beam of X-rays to produce images that show the movement of organs, such as the stomach, intestine, and colon, in the body. • The patient ingests barium to see organs more clearly

  6. Fluroscopy • View blood vessels of heart and brain for narrowing or blockages (angiogram) • X-rays!

  7. Ultrasound • high-frequency sound waves to produce images of body tissues and organs. Soundwaves enter the body and are reflected back by internal body structures

  8. Ultrasound • Study soft tissue and major organs • Study developing fetus • Guides the needle during a biopsy • No documented risks

  9. Computed Tomography (CT or CAT scan) • using X-ray equipment to form a three dimensional image from a series of images taken at different angles of the body

  10. CT Scan • Diagnose cancer, abnormalities to skeletal system, vascular diseases • Image bone, soft tissue and blood vessels all at same time • CT of head can detect bleeding of brain • X-rays!

  11. Magnetic Resonance Imaging (MRI) • uses powerful magnets and radio waves to produce detailed images of the body

  12. MRI • Image structure and function of brain, heart and liver, soft tissues and insides of bones • Diagnose cancer, brain diseases, and cardiovascular conditions • No documented risks

  13. Public Health Strategies to Prevent Disease

  14. Prevention and Immunization • vaccinations or immunizations: protects individuals and societies as a whole. • Influenza, H1N1, mumps, measles, polio, tetanus, rubella, HPV (linked to cervical cancer)

  15. Promotion of Healthy Lifestyle • smoke-free environments, proper diet, Canadian Food guide, encouraging physical activity, weight control

  16. Promoting Public Awareness • Protecting from sun and reducing skin cancer – suntan lotion, UV index. • West Nile virus – minimize exposure to mosquitoes during active periods, remove sources of standing water, DEET • Informing public of statistics such as rates of occurrence leads to more public awareness and precautionary measures.

  17. Screening • identify people who have high risk factors, early detection • Women should have PAP tests annually when sexually active. • Mammograms for women over 50 • All adults over 50 should be screened using fecal occult blood test to detect colon cancer • DNA screen in search of genetic markers which signal disease

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