Dr. Umehara received his B.S., M.S., and Ph.D. degrees from Osaka University, Japan, in 2013, 2015, and 2018, respectively. He was previously a Research Assistant in the Department of Medical Physics and Engineering at Osaka University. He is currently working as a tenured Researcher in National Institute of Radiological Sciences (NIRS) , National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan. His research interests include artificial intelligence, machine learning, and super-resolution in medical imaging. He received an Honorable Mention award from the SPIE Medical Imaging and a Cum Laude award and two Certificate of Merit awards from the Annual Meetings of Radiological Society of North America (RSNA). He is a member of RSNA, IEEE, and SPIE.
Evaluation of the sparse coding super-resolution method for improving image quality of up-sampled images in computed tomography
Super-resolution convolutional neural network for the improvement of the image quality of magnified images in chest radiographs