https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/sound-topic/v/ultrasound-medical-imaging 2021-02-07T17:14:00Z Ultrasound medical imaging Ultrasound medical imaging (also known as sonography) is a diagnostic imaging tool that uses high-frequency sound waves to create images of structures in the body. Ultrasound images are captured in ​real time​ using an external probe and ultrasound gel placed directly on the skin. They can show things that a still image like an X-ray cannot, such as blood flow or organ movement. Ultrasound images are highly useful in the diagnosis and treatment of many diseases.  David SantoPietro video https://cdn.kastatic.org/googleusercontent/PlwLj88Kvn9N62rC6LxSN4TlSqNCgYPnmav1OcMjOp55WoM68UQvsx8cgI7p3s_8nqQWFQkAjeUHPZKW-W4JqlQ_ Ultrasound medical imaging Ultrasound medical imaging (also known as sonography) is a diagnostic imaging tool that uses high-frequency sound waves to create images of structures in the body. Ultrasound images are captured in ​real time​ using an external probe and ultrasound gel placed directly on the skin. They can show things that a still image like an X-ray cannot, such as blood flow or organ movement. Ultrasound images are highly useful in the diagnosis and treatment of many diseases.  https://cdn.kastatic.org/ka-youtube-converted/sTcqtljxLOk.mp4/sTcqtljxLOk.mp4 335 Medical imaging https://www.khanacademy.org/science/grade-12-physics-snc-aligned/xe5ce5527f6f71ade:medical-imaging/xe5ce5527f6f71ade:untitled-59/e/the-effects-of-ultrasound-on-different-tissue-types 2026-04-07T23:55:07.30621384Z Sound: The effects of ultrasound on different tissue types Questions related to ultrasound and acoustics William Gilpin exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:waves-sound-and-physical-optics/x0e2f5a2c:electromagnetic-waves/v/electromagnetic-waves-and-the-electromagnetic-spectrum 2023-09-10T17:11:17.624018169Z Electromagnetic waves and the electromagnetic spectrum Learn how electromagnetic waves are formed from changing electric and magnetic fields. Understand the electromagnetic spectrum, including different regions from visible light to gamma rays and their uses. David SantoPietro video https://cdn.kastatic.org/googleusercontent/hirtkgQIGvSN13j0V4WXIoBtbJryhnwoXNUas4HOVhYNWOoZT-i6n3YKqIHkJreYIB2dlBUVX5slQwB_Xta5t6bE Electromagnetic waves and the electromagnetic spectrum Learn how electromagnetic waves are formed from changing electric and magnetic fields. Understand the electromagnetic spectrum, including different regions from visible light to gamma rays and their uses. https://cdn.kastatic.org/ka-youtube-converted/7eutept5h0Q.mp4/7eutept5h0Q.mp4 662 Medical imaging https://www.khanacademy.org/science/in-in-class-12th-physics-india/in-in-electromagnetic-waves/in-in-phy-cbse-introduction-to-electromagnetic-waves/a/light-and-the-electromagnetic-spectrum 2021-07-06T13:18:37Z Light: Electromagnetic waves, the electromagnetic spectrum and photons Properties of electromagnetic radiation and photons article https://www.khanacademy.org/science/10th-grade-melcs/x1cfbe2e54160ac98:2nd-quarter/x1cfbe2e54160ac98:electromagnetic-spectrum/v/x-rays 2020-06-23T07:22:41Z X-rays (1895) NASA video https://cdn.kastatic.org/googleusercontent/xOCnLhhnlvvIG3i670bCEgmuJtaRnPnEFRW2LpAE99GkV4T7bgum6WqsG2B0nJHKq1YVMAFev7799ypJ2_2RlGU X-rays (1895) https://cdn.kastatic.org/ka-youtube-converted/CCAYcuCWOnM.mp4/CCAYcuCWOnM.mp4 170 Medical imaging https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:sensory-receptors-and-effects-of-drugs/v/modern-ways-of-studying-the-brain 2023-08-17T23:33:36.770424498Z Modern ways of studying the brain This video covers various methods of studying the brain, including structural techniques like CAT scans and MRIs, functional methods like EEG and MEG, and combined approaches like FMRI and PET scans. It provides an understanding of both brain structure and function. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. video https://cdn.kastatic.org/googleusercontent/43IRYXdYccVsNoefDi4DRfH4LnOZVglswGgygg4GDu6c8ro7mh4rlQM5eQds2_ySU3oEkJCKsSdKNbBXqqz92PU Modern ways of studying the brain This video covers various methods of studying the brain, including structural techniques like CAT scans and MRIs, functional methods like EEG and MEG, and combined approaches like FMRI and PET scans. It provides an understanding of both brain structure and function. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/hCFtl4npukU.mp4/hCFtl4npukU.mp4 318 Medical imaging https://www.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/x6e556f83:stroke-management/v/diagnosing-strokes-with-imaging-ct-mri-and-angiography 2020-07-15T21:03:18Z Diagnosing strokes with imaging CT, MRI, and Angiography Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Vishal Punwani video https://cdn.kastatic.org/googleusercontent/RBf8nBAHxf2ZlU5wgPzPm4SvkB6P1twNstSa0Gm5j4FlyhiblOG9YC0phIn-OhBvfsAQGOf8T9TJK2EE0Xxtx1V3 Diagnosing strokes with imaging CT, MRI, and Angiography Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/xC55TgPmfZ0.mp4/xC55TgPmfZ0.mp4 570 Medical imaging