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2. Positron emission tomography - Wikipedia

   en.wikipedia.org/wiki/Positron_emission_tomography

   Positron emission tomography ( PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption. Different tracers are used for various imaging ...

3. Artificial tears - Wikipedia

   en.wikipedia.org/wiki/Artificial_tears

   Artificial tears. A subset of various brands of artificial tears displayed in a store. Specialty. ophthalmology. [ edit on Wikidata] Artificial tears are lubricating eye drops used to relieve dryness and irritation of the ocular surface. [1] Dry eye syndrome ( keratoconjunctivitis sicca) is a common ocular surface disorder and is characterized ...

4. Recent recalls, FDA warnings about eye care products are ...

   www.aol.com/lifestyle/recent-recalls-fda...

   A slew of recent recalls and warnings has called into question the safety of products designed to treat and maintain eye health. On Friday, the Food and Drug Administration warned consumers not to ...

5. PET for bone imaging - Wikipedia

   en.wikipedia.org/wiki/PET_for_bone_imaging

   PET for bone imaging. Positron emission tomography for bone imaging, as an in vivo tracer technique, allows the measurement of the regional concentration of radioactivity proportional to the image pixel values averaged over a region of interest (ROI) in bones. Positron emission tomography is a functional imaging technique that uses [ 18 F]NaF ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. 10 interesting dog facts you've probably never heard of ... - AOL

   www.aol.com/10-interesting-dog-facts-youve...

   However, a more recent 2020 research study found that dogs have their own internal compass, as they can tap into the Earth's magnetic field to 'consult' shortcuts in unknown terrain by orientating ...

8. PET-MRI - Wikipedia

   en.wikipedia.org/wiki/PET-MRI

   PET-MRI systems don't offer a direct way to obtain attenuation maps, unlike stand-alone PET or PET-CT systems. [32] [33] Stand alone PET systems' attenuation correction (AC) is based on a transmission scan (mu - map) acquired using a 68 Ge ( Germanium-68 ) rotating rod source, which directly measures photon attenuation at 511 keV.

9. Dog Photographer’s Images of Pets With Their Favorite ... - AOL

   www.aol.com/dog-photographer-images-pets...

   Keegan recently shared photos of dogs with their favorite stuffed animals on Instagram, and it was an instant hit! The video features adorable dogs posing with their stuffies, and you can't help ...