Tetsuya Yasuda, Kazuya Maeda, Daisuke Ogoshi, Masumi Kanesaki, Hiroaki Takano, Keiichi Nishikawa. Nationwide survey on the current situation of quality control of diagnostic displays in Japan. Radiological Physics and Technology. 2023
Mamiko Fujikura, Keiichi Nishikawa, Kazuya Araki. Magnetic resonance imaging signal intensities of the temporomandibular joint articular disc and cortical bone: are these measurements valid for the diagnosis of temporomandibular joint disease?. The Showa University Journal of Medical Sciences. 2017. 29. 4. 415-423
M. Ohkubo, T. Higaki, K. Nishikawa, M. Otonari-Yamamoto, T. Sugiyama, R. Ishida, M. Wakoh. Optimal contrast enhancement liquid for dynamic MRI of swallowing. Journal of Oral Rehabilitation. 2016. 43. 9. 678-682
Keiichi Nishikawa, Yuuji Kousuge, Tsukasa Sano. Is application of a quantitative CT technique helpful for quantitative measurement of bone density using dental cone-beam CT?. Oral Radiology. 2016. 32. 1. 9-13
Rishabh Kapila, Yukiko Matsuda, Kazuyuki Araki, Tomohiro Okano, Keiichi Nishikawa, Tsukasa Sano. Radiopacity Measurement of Restorative Resins Using Film and Three Digital Systems for Comparison with ISO 4049: International Standard. The Bulletin of Tokyo Dental College. 2015. 56. 4. 207-14
Takashi Kamio, Akiko Imaizumi, Keiichi Nishikawa, Takeo Shibui, Kenji Inoue, Kenichi Matsuzaka, Junichiro Sakamoto, Tsukasa Sano. Utility of preoperative imaging diagnosis for a malignant tumor of the mandible: a malignant tumor of the mandible is difficult to discriminate from bisphosphonate-related osteonecrosis of the jaw. Oral Radiology. 2014. 30. 3. 236-242
A Imaizumi, Y Sasaki, J Sakamoto, T Kamio, K Nishikawa, M Otonari-Yamamoto, M Wako. Effects of compression force on elasticity index and elasticity ratio in ultrasound elastography. Dentomaxillofacial Radiology. 2014. 43. 4. 20130392-20130392
Mai Ohkubo, Takuo Higaki, Keiichi Nishikawa, Mika Otonari-Yamamoto, Tetsuya Sugiyama, Ryo Ishida, Mamoru Wako, Tsukasa Sano. Optimization of parameter settings in cine-MR imaging for diagnosis of swallowing. The Bulletin of Tokyo Dental College. 2014. 55. 3. 131-7
Yoshinori Sasaki, Junichiro Sakamoto, Mika Otonari-Yamamoto, Keiichi Nishikawa, Tsukasa Sano. Potential of fluid-attenuated inversion recovery MRI as an alternative to contrast-enhanced MRI for oral and maxillofacial vascular malformations: experimental and clinical studies. Oral surgery, oral medicine, oral pathology and oral radiology. 2013. 116. 4. 503-10
Junichiro Sakamoto, Yoshinori Sasaki, Mika Otonari-Yamamoto, Keiichi Nishikawa, Tsukasa Sano. Diffusion-weighted imaging of the head and neck with HASTE: influence of imaging parameters on image quality. ORAL RADIOLOGY. 2012. 28. 2. 87-94