Suchergebnisse - "Modulation transfer functions"

Correlation between Contrast Sensitivity and Modulation Transfer Functions von Leroux, Charles E, Bouchet, Elise, Espinasse, Pauline, Fontvieille, Christophe, Bardin, Fabrice

“… This study describes the correlation between the contrast sensitivity function (CSF) and the modulation transfer function (MTF …”
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Distribution of spectral modulation transfer functions in a young, normal-hearing population von Hoover, Eric C, Eddins, Ann C, Eddins, David A

“… Spectral modulation transfer functions (SMTFs) were measured in 49 young (18-35 years of age) normal-hearing listeners …”
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Temporal modulation transfer functions obtained using sinusoidal carriers with normally hearing and hearing-impaired listeners von Moore, B C, Glasberg, B R

“… Temporal modulation transfer functions were obtained using sinusoidal carriers for four normally hearing subjects and three subjects with mild to moderate cochlear hearing loss …”
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Modulation transfer functions in children: pupil size dependence and meridional anisotropy von Carkeet, Andrew, Leo, Seo-Wei, Khoo, Boo-Kian, Au Eong, Kah-Guan

“… This study quantified preschool children's optical quality in terms of their aberrations and modulation transfer function (MTF …”
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Metal artifact reduction in x-ray computed tomography (CT) by constrained optimization von Zhang, Xiaomeng, Wang, Jing, Xing, Lei

“… , subject to the constraint that the estimated projection data are within a specified tolerance of the available metal …”
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Realistic simulation of reduced-dose CT with noise modeling and sinogram synthesis using DICOM CT images von Won Kim, Chang, Kim, Jong Hyo

“… : Two key characteristics of CT systems, the noise equivalent quanta (NEQ) and the algorithmic modulation transfer function (MTF …”
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SU-G-206-13: Validating Dose Split: A Method to Image the Same Patient at Multiple Doses with a Single CT Acquisition von Solomon, J, Zhang, Y, Marin, D, Samei, E

“… This presents ethical and logistical challenges for performing such research with human subjects …”
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Modulation transfer functions of eyes implanted with intraocular lenses von Navarro, R, Ferro, M, Artal, P, Miranda, I

“… The method is based on recording in vivo the aerial image of a point test, after a double pass through the ocular media, and subsequent computation of the eye's modulation transfer function …”
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Evaluation of the OSC‐TV iterative reconstruction algorithm for cone‐beam optical CT von Matenine, Dmitri, Mascolo‐Fortin, Julia, Goussard, Yves, Després, Philippe

“… Purpose: The present work evaluates an iterative reconstruction approach, namely, the ordered subsets convex (OSC) algorithm with regularization via total …”
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Technical Note: Image filtering to make computer-aided detection robust to image reconstruction kernel choice in lung cancer CT screening von Ohkubo, Masaki, Narita, Akihiro, Wada, Shinichi, Murao, Kohei, Matsumoto, Toru

“… : The proposed filtering process uses the ratio of modulation transfer functions (MTFs) of two reconstruction kernels as a filtering function in the spatial-frequency domain …”
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Task-based modeling and optimization of a cone-beam CT scanner for musculoskeletal imaging von Prakash, P., Zbijewski, W., Gang, G. J., Ding, Y., Stayman, J. W., Yorkston, J., Carrino, J. A., Siewerdsen, J. H.

“… Purpose: This work applies a cascaded systems model for cone-beam CT imaging performance to the design and optimization of a system for musculoskeletal …”
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Anatomical noise in contrast-enhanced digital mammography. Part II. Dual-energy imaging von Hill, Melissa L., Mainprize, James G., Carton, Ann-Katherine, Saab-Puong, Sylvie, Iordache, Răzvan, Muller, Serge, Jong, Roberta A., Dromain, Clarisse, Yaffe, Martin J.

“… Purpose: Dual-energy (DE) contrast-enhanced digital mammography (CEDM) uses an iodinated contrast agent in combination with digital mammography (DM) to …”
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SemiSPECT: A small-animal single-photon emission computed tomography (SPECT) imager based on eight cadmium zinc telluride (CZT) detector arrays von Kim, Hyunki, Furenlid, Lars R., Crawford, Michael J., Wilson, Donald W., Barber, H. Bradford, Peterson, Todd E., Hunter, William C. J., Liu, Zhonglin, Woolfenden, James M., Barrett, Harrison H.

“… The first full single-photon emission computed tomography (SPECT) imager to exploit eight compact high-intrinsic-resolution cadmium zinc telluride (CZT) …”
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Optimization of the matrix inversion tomosynthesis (MITS) impulse response and modulation transfer function characteristics for chest imaging von Godfrey, Devon J., McAdams, H. P., Dobbins, James T.

“… ) on the MITS impulse response (IR) and modulation transfer function (MTF), with the purpose of optimizing MITS imaging of the chest …”
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Comment on "Temporal modulation transfer functions in patients with cochlear implants" [J. Acoust. Soc. Am. 91,2156-2164 (1992)] von Kohlrausch, A

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Characterization of a commercial hybrid iterative and model‐based reconstruction algorithm in radiation oncology von Price, Ryan G., Vance, Sean, Cattaneo, Richard, Schultz, Lonni, Elshaikh, Mohamed A., Chetty, Indrin J., Glide‐Hurst, Carri K.

“… Task specific modulation transfer functions (MTFtask) were developed to characterize …”
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SU‐D‐12A‐06: A Comprehensive Parameter Analysis for Low Dose Cone‐Beam CT Reconstruction von Lu, W, Yan, H, Bai, T, Zhou, L, Gu, X, Jiang, S, Jia, X

“… The purpose of this study is to investigate this subject based on experimental data and a representative advanced IR algorithm using Tight‐frame (TF) regularization. Methods …”
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Temporal modulation transfer functions for band-limited noise in subjects with cochlear hearing loss von Moore, Brian C. J., Shailer, Michael J., Schooneveldt, Gregory P.

“… The modulation depth required for the detection of sinusoidal amplitude modulation was measured as a function of modulation rate, giving temporal modulation transfer functions (TMTFs …”
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An objective inspection method of visual acuity based on wave front aberrations of human eye von Quan, Wei, Song, Guicai, Wang, Zhao-Qi

“… The wavefront aberrations of human eyes were measured with the Hartmann–Shack wavefront sensor and modulation transfer function was computed from the wave front aberrations …”
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Modulation transfer functions of low-vision AIDS: comparison with spatial-frequency requirements in low vision von Leat, S J, Rumney, N J

“… Modulation transfer functions (MTF's) of 26 low-vision aids (LVA's) were measured by using the EROS solid-state system …”
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