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Showing posts from July, 2016

How Do Medical Imaging Scans Work?

Medical imaging tests have made important advances in early diagnosis and treatment. There are a few different options that may be best for certain diagnoses and individuals and allow physicians to see what was impossible to view only a few decades ago. However, these imaging scans can be harmful and not all dangers are yet known. X-Rays Are Best for Bone and Calcium Dense Tissue Scans X-rays are the oldest imaging scans and are created by beams of radiation through the body to create an image on photographic films or a digital recording plate. X-rays are best used to take high resolution images of bones and calcium dense tissue, such as in dental images and chest X-rays for pneumonia. It can be used to take images of organs and blood vessels with the use of fluoroscopy, which is the injection of contrast dye into the body. X-ray imaging is inexpensive and gives fast, high resolution images, as most people have experienced at the dentist. However, X-ray radiation is an ioniz

High Blood Pressure Causes Death

High blood pressure (hypertension) is often called the “silent killer.” That’s because there are rarely any symptoms. Then a person may die as the result of the damage done over time by the presence of high blood pressure. For this reason, people need to have their blood pressure monitored routinely. Doctors prefer blood pressures to be 120/80 or lower. The top number, 120, is called the systolic number. That top number is obtained when the heart is working to pump blood. The bottom number, 80, is called the diastolic number. It is obtained while the heart is at rest. Both numbers are important. Diagnosing High Blood Pressure The diagnosis of hypertension is given to a person who has repeated readings of 140/90 or greater. A diagnosis of hypertension is not based on a single reading. Blood pressures vary over the course of the day. It’s usually lower during sleep and higher in the morning. Pain and stress may elevate a blood pressure reading. Primary or Secondary High Bloo