The goal of the study is to improve the resolution of spiral computed tomography of the temporal bone primarily to improve the evaluation of cochlear implants. The first specific aim is to improve CT images. This will be done with computer programming and mathematical de- blurring techniques and with a specialized table transport that has greater longitudinal resolution than that currently available. The second specific aim is to evaluate the images from part one and verify that the images are improved. The deblurring algorithms will be evaluated with mathematical and physical phantoms. Measurements of ossicles and parts of the cochlea will be made on the deblurred scanned images and compared with those obtained from the actual temporal bone specimens. Measurements will also be made of the deblurred images of implanted patients and will be compared to the mechanical specifications and survey of the implants.
| Wang, G; Vannier, M W; Skinner, M W et al. (1998) Spiral CT image deblurring for cochlear implantation. IEEE Trans Med Imaging 17:251-62 |
| Wang, G; McFarland, E G; Brown, B P et al. (1998) GI tract unraveling with curved cross sections. IEEE Trans Med Imaging 17:318-22 |
| Ketten, D R; Skinner, M W; Wang, G et al. (1998) In vivo measures of cochlear length and insertion depth of nucleus cochlear implant electrode arrays. Ann Otol Rhinol Laryngol Suppl 175:1-16 |
| Wang, G; Vannier, M W (1997) Optimal pitch in spiral computed tomography. Med Phys 24:1635-9 |
| Wang, G; Vannier, M W (1997) Low-contrast resolution in volumetric x-ray CT--analytical comparison between conventional and spiral CT. Med Phys 24:373-6 |
| Wang, G; Vannier, M W; Skinner, M W et al. (1996) Unwrapping Cochlear implants by spiral CT. IEEE Trans Biomed Eng 43:891-900 |
| Wang, G; Vannier, M W (1996) Maximum volume coverage in spiral computed tomography scanning. Acad Radiol 3:423-8 |
| Wang, G; Snyder, D L; Vannier, M W (1996) Local computed tomography via iterative deblurring. Scanning 18:582-8 |
