1. Preliminary investigation of the clinical usefulness of super-high-resolution LCDs with 9 and 15 mega-sub-pixels: observation studies with phantoms
- Author
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Katsuhiro Ichikawa, Naofumi Kimura, Yuko Mochiya, Shigeru Sanada, Mikio Hasegawa, Ayumi Morishita, Tomoyuki Yamamoto, Aya Nishimura, and Hiroko Kawashima
- Subjects
Digital mammography ,Computer science ,High resolution ,Magnification ,Physical Therapy, Sports Therapy and Rehabilitation ,Imaging phantom ,law.invention ,law ,Image Interpretation, Computer-Assisted ,Radiology, Nuclear Medicine and imaging ,Computer vision ,Clinical efficacy ,Technology, Radiologic ,Radiation ,Liquid-crystal display ,Pixel ,business.industry ,Phantoms, Imaging ,Liquid-crystal display (LCD) ,Sub-pixel ,General Medicine ,Liquid Crystals ,Data Display ,Artificial intelligence ,business ,Independent sub-pixel driving (ISD) ,Mammography - Abstract
金沢大学附属病院放射線部, Our purpose in this study was to evaluate the preliminary clinical efficacy of soft-copy reading of digital mammography, for a 15-mega-sub-pixel (MsP) and a 9-MsP super-high-resolution liquid-crystal display (SHR-LCD) by use of an independent sub-pixel driving technology. We performed three kinds of phantom observation studies by six radiological technologists. Detectability of a contrast-detail phantom and simulated small objects (SSOs) resembling microcalcifications (MCLs), and shape discrimination ability of SSOs with round and square shapes, were examined and compared with a 5-MP conventional LCD (5-MP LCD). In each study, four types of display magnification ratio were used. The detectability and the shape discrimination ability of the 15-MsP SHR-LCD were highest among the three LCDs of most of the display magnification ratios. The 9-MsP SHR-LCD indicated a higher or equal performance as compared with the 5-MP LCD in the SSO detection and shape studies. The results of our study demonstrated that the SHR-LCDs had good potential to detect MCLs and to evaluate the shape in high-resolution digital mammography. © 2009 Japanese Society of Radiological Technology and Japan Society of Medical Physics.
- Published
- 2009