Island Med Student

Here are some more random tidbits for your reading pleasure:

1) Sonar technology was first developed around 1942. Soon thereafter, some scientists put pregnant women in water, and were first able to visualize fetuses with sonogram technology.

2) Humans can recognize 16 shades of gray.

3) “Air is the enemy of sound,” when it comes to sonograms.

4) When using a doppler to visualize arteries and veins, blue means blood is moving away, and red towards.

5) If a patient has AIDS nephropathy, their kidney will appear all white on sonogram, and with hydronephrosis, it will appear all black.

6) Gallstones will cast a shadow on a sonogram because no sound can go through them.

7) To differentiate between a polyp and a gallstone on sono, have the patient sit up. If it moves, it’s a stone!

8 ) MRs stretch bonds between atoms, they don’t break them.

9) 90 degree deflection of hydrogen atoms is called “spin echo” imaging on MRI.

10) In MRI, a T1 image is a H+ molecule moving from the x-y plane to the z plane.

11) A T2 image is a H+ molecule regrouping into the x-y plane.

12) If you use gadolinium contrast for an MRI, the patient can get nephrogenic systemic sclerosis.

Note: I didn’t have any good radiological images to use for this post, so I picked some random iPhone images instead. Enjoy.