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Medical Imaging Technology

Learn about X-Ray, Ultrasound, CT scan, MRI, and more imaging technologies used by doctors for diagnosis & treatment. Understand risks, benefits, and applications in medical practice.

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Medical Imaging Technology

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  1. Medical Imaging Technology

  2. Medical imaging allows doctors to see within the human body so that they can diagnose and treat diseases or ailments. • Today we will be looking at different imaging technologies that doctors can use to look inside the human body Producing Images of Organs and Tissues

  3. X-Ray is high energy radiation that can penetrate skin and tissues but that can not penetrate metals and bone • X-Ray radiographs can be anaylzed for broken bones, structure of blood vessels and arteries, and lungs abnormalities • Associated risks with X-rays: • Can cause changes and mutations to DNA lead apron X-Ray

  4. Uses a continuous beam of X-Rays to produce images that show movement of organs ex. Stomach, intestine, colon. • The blood vessels can also be studied, called an angiogram. A dye is injected into the patient, and the blood flow can be seen by the doctor, this will demonstrate any blockages or narrowing of arteries • Barium or iodine is ingested in to the patient Fluoroscopy

  5. high-frequency sound waves to produce images of body tissues and organs. • Soundwavesenter the body and are reflected back by internal body structures • Study soft tissue and major organs • Study developing fetus to check for abnormalities • Guides the needle during a biopsy or for amniotic fluid • No documented risks Ultrasound

  6. CT or CAT • using X-ray equipment to form a three dimensional image from a series of images taken at different angles of the body • Diagnose cancer, abnormalities to skeletal system, vascular diseases • Image bone, soft tissue and blood vessels all at same time, and is a quick and painless process • CT of head can detect bleeding of brain Computed Tomography (CT)

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

  8. uses the interactions of light with cells and tissues. • Light shines on cells, the particles of light are scattered by atoms in the molecules of the cells. A special imaging device records these scatter patterns. The molecules in abnormal cells create different scatter patterns than normal cells. • Use endoscope to explore digestive tract (colonoscopy) • endoscopic surgeries require smaller incisions and shorter recovery Biophotonics

  9. Factors involved for appropriate treatment: • Doctor ordering correct test • Patient understanding the reasoning of the test • Technician administering the test correctly • Proper funding • Location Decisions and Diagnosis

  10. What is an angiogram • What are some limitations with the use of X-ray technologies • How are x-rays used in the treatment of cancer? • What information can be provided by a chest radiograph? • A patient is suspected of having bone cancer. Explain whether or not ultrasound is a good imaging tool for diagnosing bone cancer. Questions

  11. Immunization Programs: • vaccinations or immunizations: protects individuals and societies as a whole. • Influenza, H1N1, mumps, measles, polio, tetanus, rubella, HPV • HIV/AIDS vaccine development over 33 million people are infected with HIV Screening Programs: • DNA Screening: identify people who have high risk factors, early detection • DNA screen in search of genetic markers which signal disease Public health strategies

  12. Promoting Health Lifestyles: • Smoke free environments • proper diet, Canadian Food guide, encouraging physical activity, weight control Public health strategies

  13. Promoting Public Awareness: • Protecting from sun and reducing skin cancer – sunscreen lotion for UV ray protection, hats, sun glasses, long clothing • 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. Public health strategies

  14. What is the most commonly administered vaccine in Ontario? • Define HIV and AIDS and show the relationship between the two terms • Explain what might happen to you if you were bitten by a mosquito carrying the west Nile virus • Describe some public health strategies used to promote healthy living in Ontario. Questions

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