Sonography, also known as ultrasonography or ultrasound imaging, is a medical imaging technique that uses high-frequency sound waves to create images of the internal structures of the body. It is a non-invasive and safe diagnostic tool that provides real-time images without the use of ionizing radiation, making it particularly useful for visualizing developing fetuses during pregnancy and assessing various organs and tissues in the body.
Here's how sonography works and its applications:
Sound Waves: During a sonography procedure, a transducer emits high-frequency sound waves into the body. These sound waves travel through the body and bounce off different tissues and organs.
Echoes: When the sound waves encounter tissue boundaries or different types of tissues, they are reflected back as echoes.
Image Formation: The transducer detects these echoes and sends them to a computer. The computer processes the echoes and creates real-time images that are displayed on a monitor.
Obstetric and Gynecologic Sonography: Sonography is widely used in prenatal care to monitor the development and health of the fetus. It can also help diagnose gynecological conditions such as ovarian cysts, uterine fibroids, and ectopic pregnancies.
Abdominal Sonography: Sonography is used to assess the liver, gallbladder, pancreas, kidneys, spleen, and other abdominal organs. It helps diagnose conditions such as gallstones, liver tumors, and kidney abnormalities.
Cardiac Sonography (Echocardiography): This specialized form of sonography is used to visualize the heart and its structures. It provides valuable information about heart function, blood flow, and heart valve abnormalities.
Vascular Sonography: Also known as vascular ultrasound, this type of sonography is used to examine blood vessels and assess blood flow. It helps diagnose conditions such as deep vein thrombosis (DVT), carotid artery disease, and aneurysms.
Musculoskeletal Sonography: This form of sonography is used to visualize muscles, tendons, ligaments, and joints. It's commonly used to diagnose sports injuries, joint inflammation, and musculoskeletal disorders.
Breast Sonography: Sonography can complement mammography in evaluating breast abnormalities. It's particularly useful for characterizing breast lumps and guiding breast biopsies.
Thyroid and Neck Sonography: Used to assess thyroid nodules and other neck structures, aiding in the diagnosis of thyroid conditions.
Pelvic Sonography: In addition to gynecological applications, pelvic sonography can help diagnose conditions affecting the urinary bladder and prostate.