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1. www.webmd.com › a-to-z-guides › what-is-an-mriWhat Is an MRI (Magnetic Resonance Imaging) Scan? - WebMD

   www.webmd.com › a-to-z-guides › what-is-an-mri

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   2024年3月26日 · Magnetic resonance imaging (MRI) is a test that uses powerful magnets, radio waves, and a computer to make detailed pictures of the inside of your body. MRIs can diagnose a lot of health issues ...

2. www.webmd.com › covid › covid-19-symptomsCoronavirus Symptoms: Early Signs, Serious Symptoms - WebMD

   www.webmd.com › covid › covid-19-symptoms

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   They tend to include sore throat, runny nose, and other symptoms similar to a cold. They may not include lower respiratory tract symptoms such as wheezing, severe cough, or fever. COVID-19 ...

3. www.webmd.com › lung › understanding-pneumonia-basicsPneumonia: Symptoms, Causes, and Treatment - WebMD

   www.webmd.com › lung › understanding-pneumonia-basics

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   2024年4月28日 · If you have trouble breathing, coughing that doesn't stop, chest pain, or a fever of 102 F or higher, see your doctor. Symptoms of pneumonia in babies. Babies with pneumonia may not show any ...