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Learning Center
Diagnosing Alzheimer's: How Alzheimer's is diagnosed
Even though there isn't a cure, early diagnosis of Alzheimer's dementia is important.
Doppler ultrasound: What is it used for?
A Doppler ultrasound measures blood flow and pressure in blood vessels.
Ejection fraction: What does it measure?
This measurement, commonly taken during an echocardiogram, shows how well the heart is pumping. Know what results mean.
Endoscopic ultrasound
Learn more about this minimally invasive imaging test combining endoscopy and ultrasound to diagnosis digestive and lung diseases.
Esophageal manometry
This test involves placing a thin, pressure-sensitive tube through your nose into your esophagus to measure pressure as you swallow.
Eye dilation: Necessary with every eye exam?
Eye dilation is part of a comprehensive eye exam. How often you need it depends on your age and health risks.
Fast food tip: Watch what you drink
You can eat healthy away from home, even at fast-food restaurants. Be smart about what you get to drink. Many beverages are high in calories. A large (32-ounce) soda can have close to 400 calories. A large shake can have more than 650 calories. Choose water or unsweetened iced tea instead.
Fast food: Tips for choosing healthier options
Get tips on how fast food can fit into your healthy diet.
Fecal occult blood test
Learn how doctors use fecal occult blood tests (FOBT), such as the fecal immunochemical test (FIT), to screen for colon cancer.
Genetic testing
Genetic testing: Learn why it's done, how to prepare and what to expect from diagnostic tests, carrier tests, prenatal tests and newborn screening.
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