Diagnostic Imaging


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Diagnostic Imaging

  1. 1. Diagnostic Imaging By: Carmen Ortiz
  2. 2. Cardiac scans
  3. 3. Ct or Cat Scans <ul><li>Different types of CT scans (ex. MDCT, EBCT, and ) vary from case to case. </li></ul><ul><li>Universal Purpose </li></ul><ul><li>1.) A test that is painless that utilizes an x-ray machine to take detailed pictures of the heart. </li></ul><ul><li>2.) Used to search for problems in the heart. </li></ul><ul><li>Procedure </li></ul><ul><li>1.) An x-ray machine moves around a person’s body in a circle, as it takes pictures of each part of your heart. </li></ul><ul><li>2.) A computer then puts pictures together to make a three dimensional view of your heart. </li></ul><ul><li>3.) A times a dye or a radioactive tracer might be injected into a blood vessel. The dye or tracer (thallium) then travels through the blood vessels and highlights them for the x-ray pictures. </li></ul>
  4. 4. <ul><li>Downside </li></ul><ul><li>1.) Cardiac CT involves radiation due to the x-rays and tracer. </li></ul><ul><li>2.) The radiation exposure is said to be considered small and similar to the amount of radiation a person will be normally be exposed to in three years. </li></ul><ul><li>3.) In contrast, though according to a new study, exposure varies from hospital to hospital but the average dose of a single scan is equivalent to about 600 traditional chest x-rays. </li></ul><ul><li>Upside </li></ul><ul><li>1.)New cardiac methods are now available to reduce the amount of radiation being used. </li></ul>
  5. 5. CT scans are used to diagnose <ul><li>Coronary Heart Disease </li></ul><ul><li>Problems with: </li></ul><ul><li>1.) Coronary arteries </li></ul><ul><li>2.) Heart </li></ul><ul><li>3.) Heart valves </li></ul><ul><li>4.) Aorta (aneurysm and dissection) </li></ul><ul><li>5.) Blood clots </li></ul><ul><li>6.) Pulmonary veins </li></ul><ul><li>7.) Pericardium </li></ul>
  6. 6. Doppler Ultasonography
  7. 7. Doppler Ultrasonography <ul><li>Purpose </li></ul><ul><li>1.) To detect direction, speed and obstacles of blood flow. </li></ul><ul><li>Procedure </li></ul><ul><li>1.) A technician will apply gel to the skin. </li></ul><ul><li>2.) Then place the transducer (a device that converts electrical signals into ultrasound waves and ultrasound waves back into electrical impulses) against the skin in various angles. </li></ul><ul><li>3.) The electrical impulses are measurements of sound wave echoes as they bounce of tissues and organs. </li></ul><ul><li>4.) The electrical impulses are then sent to a monitor, that shows the organ being studied and records it for study. </li></ul>
  8. 8. Doppler ultrasonography is used to diagnose: <ul><li>Problems with blood flow in blood vessels. </li></ul><ul><li>1.) Blood clots </li></ul><ul><li>2.) Thromboses </li></ul><ul><li>3.) Velocity of blood. </li></ul><ul><li>Upside </li></ul><ul><li>1.) Prevents possible heart attacks. </li></ul><ul><li>2.) Harmless, painless and widely available. </li></ul><ul><li>3.) Does not utilize x-rays. </li></ul><ul><li>4.) It is noninvasive </li></ul>
  9. 9. Echocardiography
  10. 10. Echocardiography <ul><li>Purpose </li></ul><ul><li>To visualize internal cardiac structures. </li></ul><ul><li>Procedure </li></ul><ul><li>1.) A transducer is placed on your ribs near the breast bone and directed toward the heart. At times near your left nipple, which is located near the apex of your heart. </li></ul><ul><li>2.) The transducer picks up the echoes of the sound waves and transmits them as electrical impulses. </li></ul><ul><li>3.) The electrical impulses produce moving images of a beating heart and its structures. </li></ul><ul><li>4.) A doppler probe records the motion of the blood through the heart. </li></ul><ul><li>5.) At times the heart might be obstructed and liquid might be inserted into the heart to get a better view. </li></ul>
  11. 11. Echocardiography used to diagnose and monitor <ul><li>1.) Heart murmurs </li></ul><ul><li>2.) Abnormal heart valves </li></ul><ul><li>3.) Damage to the heart muscle in patients who have had heart attacks </li></ul><ul><li>4.) Pericarditis </li></ul><ul><li>5.) Source of a blood clot embolism </li></ul><ul><li>6.) Congenital heart disease </li></ul><ul><li>7.) Atrial fibrillation </li></ul><ul><li>8.) Pulmonary hypertension </li></ul><ul><li>Upside </li></ul><ul><li>1.) Usually noninvasive </li></ul>
  12. 12. Works Cited <ul><li>National Heart and Lung Institute. Nov2009 www.nhlbi.nih.gov/health/dci/Diseases/ ct / ct _whatis.html . </li></ul><ul><li>The Free Dictionary http://medical-dictionary.thefreedictionary.com/Doppler+ultrasonography . </li></ul><ul><li>Medline Plus.25 January 2010. http://www.nlm.nih.gov/medlineplus/ency/article/003869.htm . </li></ul><ul><li>Wikipedia </li></ul><ul><li>Medical Terminology “A living Language”. </li></ul>