Ultrasound is known for its use in imaging during pregnancy. But new advancements in the technology suggest that in the future, ultrasound could be used to disrupt the blood-brain barrier. This would allow doctors to more easily diagnose and directly treat illnesses like brain cancer without major surgery. WSJ\u2019s Danny Lewis and Charlotte Gartenberg examine the new ways that ultrasound could be used more specifically and subtly to deliver accurate diagnoses and precise treatments.\n\n\n\nWhat do you think about the show? Let us know on Apple Podcasts or Spotify, or email us: FOEPodcast@wsj.com\n\n\n\nSign up for the WSJ's free The Future of Everything newsletter .\n\n\n\nFurther reading:\n\n\n\nNew Ultrasound Therapy Could Help Treat Alzheimer\u2019s, Cancer\xa0\n\nTreatment Breakthrough for an Intractable Brain Cancer\xa0\n\nThe \u2018Mini Brains\u2019 solving medical mysteries and raising concerns\n\nWe Can Now See the Brain Like Never Before\xa0\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices