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Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves and their echoes. The technique is similar to the echolocation used by bats, whales and dolphins, as well as SONAR used by submarines. In ultrasound, the following events happen: The ultrasound machine transmits high-frequency (1 to 5 megahertz) sound pulses into your body using a probe. The sound waves travel into your body and hit a boundary between tissues (e.g. between fluid and soft tissue, soft tissue and bone). Some of the sound waves get reflected back to the probe, while some travel on further until they reach another boundary and get reflected. The reflected waves are picked up by the probe and relayed to the machine. The machine calculates the distance from the probe to the tissue or organ (boundaries) using the speed of sound in tissue (5,005 ft/s or1,540 m/s) and the time of the each echo's return (usually on the order of millionths of a second). The machine displays the distances and intensities of the echoes on the screen, forming a two dimensional image like the one shown below.
Too much cholesterol in the blood can lead to cardiovascular disease. Heart disease is the No. 1 cause of death in the United States. Over 2,100 Americans die of cardiovascular disease each day, an average of one death every 40 seconds. The good news is, you can lower your cholesterol and reduce your risk of heart disease and stroke. Working with your doctor is key. It takes a team to develop and maintain a successful health program. You and your healthcare professionals each play an important role in maintaining and improving your heart health. Work with your doctor to determine your risk and the best approach to manage it. In all cases, lifestyle changes are important to reduce your risk for heart attack and stroke. In some cases, cholesterol-lowering statin medicines may also provide benefit. Learn how to make diet and lifestyle changes easy and lasting. Also make sure you understand instructions for taking medication because it won't work if you don't take it as directed. Lifestyle Changes Your diet, weight, physical activity and exposure to tobacco smoke all affect your cholesterol level. Know Your Fats Knowing which fats raise LDL cholesterol and which ones don't is the first step in lowering your risk of heart disease.
An abdominal hysterectomy is a surgical procedure that removes your uterus through an incision in your lower abdomen. Your uterus — or womb — is where a baby grows if you're pregnant. A partial hysterectomy removes just the uterus, leaving the cervix intact. A total hysterectomy removes the uterus and the cervix. Sometimes a hysterectomy includes removal of one or both ovaries and fallopian tubes, a procedure called a total hysterectomy with salpingo-oophorectomy (sal-ping-go-o-of-uh-REK-tuh-me). A hysterectomy can also be performed through an incision in the vagina (vaginal hysterectomy) or by a laparoscopic or robotic surgical approach — which uses long, thin instruments passed through small abdominal incisions.
Keratoderma Blennorrhagicum is a manifestation on the skin that appears in patients diagnosed with reactive arthritis (this condition was previously known as Reiter syndrome). The condition manifests itself by lesions that appear on the skin, initially on the palm of the hands and soles of the feet. The lesions have the tendency to spread, affecting other parts of the body, such as the scrotum, scalp or trunk. Because of their appearance, the lesions might be easily confused with the ones from psoriasis. Keratoderma blennorrhagicum is one of the symptoms that can be used for the clinical diagnosis of reactive arthritis.
Sebaceous cysts are common noncancerous cysts of the skin. Cysts are abnormalities in the body that may contain liquid or semiliquid material. Sebaceous cysts are mostly found on the face, neck, or torso. They grow slowly and are not life-threatening, but they may become uncomfortable if they go unchecked. Doctors usually diagnose a cyst with only a physical examination and medical history. In some cases, a cyst will be examined more thoroughly for signs of cancer
Ever considered getting laser eye surgery, but didn’t know how it worked? Allow us to help!
There are three different main types of laser eye surgery: LASIK, SMILE, and Surface Laser Treatments, and each can be explained pretty easily.
LASIK uses two lasers to open up a thin flap on the surface of the cornea, and then reshapes the cornea underneath. The flap is then placed back over the reshaped cornea, and heals independently with time.
SMILE uses one laser to reshape the cornea through a small, self-healing hole.
And Surface Eye Treatments remove the clear skin over the eye, to then reshape the cornea underneath with - you guessed it - a laser!
Dilation and curettage (D&C) is a procedure to remove tissue from inside your uterus. Doctors perform dilation and curettage to diagnose and treat certain uterine conditions — such as heavy bleeding — or to clear the uterine lining after a miscarriage or abortion.
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Dr. Rod J. Oskouian, is a neurosurgeon who specializes in the diagnosis and treatment of complex spinal disorders. Dr. Oskouian is currently the Chief of Spine at the Swedish Neuroscience Institute and President and CEO of the Seattle Science Foundation. His research and clinical focus is on scoliosis, spinal deformities and anomalies, osteoporosis, spinal cord injury, degenerative disc disease, spinal oncology, stereotactic spinal radiosurgery, and minimally invasive spinal surgery. He has published in numerous medical journals and textbooks, including Neuroscience, Neurosurgery, Neurosurgical Clinics of North America, the Journal of Neurosurgery, Neurosurgical Focus and Spine.