A couple of simple and short quizzes on ultrasound imaging

An easy quiz on sonography of the uterus:
http://www.ultrasound-images.com/amusing-pics/#Try-this-easy-quiz-on-uterus-below

Another quiz on ultrasound of the spleen:
http://www.ultrasound-images.com/spleen/#Try-this-quiz-on-spleen

Short quiz on thyroid sonography

Test your wits with this link for a short quiz on thyroid ultrasound:
http://www.ultrasound-images.com/thyroid-2/#Thyroid-ultrasound-quiz