21. Traditional ultrasound imaging primarily detects boundaries between different media. 22. For example, in ultrasound imaging , " rough " tissues are said to exhibit Lambertian reflectance. 23. Ultrasound imaging or sonography is often used in medicine.24. Until a few years ago, however, even the best ultrasound images left something to the imagination. 25. It combines the high sensitivity of optical imaging with the high spatial resolution of ultrasound imaging . 26. Ultrasound images have been widely used since the 1970s as a diagnostic tool for prenatal care.27. Stepping away from the operating table, Michler looked at the before-and-after ultrasound images of Ray's heart. 28. "' 2016, K . Kirk Shung "', For contributions to ultrasound imaging and transducer technology . 29. A video screen shows what a doctor would watch during the procedure, such as ultrasound images . 30. During the surgery, Watkins used ultrasound imaging to help guide an electrode probe inserted in the tumor.
