Assessing the validity of modulation transfer function evaluation techniques with application to small area and scanned digital detectors

2008 ◽  
Vol 79 (11) ◽  
pp. 113103 ◽  
Author(s):  
B. D. Price ◽  
C. J. Esbrand ◽  
A. Olivo ◽  
A. P. Gibson ◽  
J. C. Hebden ◽  
...  
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Small Area ◽  
Function Evaluation ◽  
Modulation Transfer ◽  
Evaluation Techniques

Modulation Transfer Function Evaluation of a Hadamard Transform Photothermal Deflection Imaging System with Beam Condensing Optics

1988 ◽  
Vol 42 (8) ◽  
pp. 1487-1493 ◽  
Author(s):  
Patrick J. Treado ◽  
Michael D. Morris
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Imaging System ◽  
Function Evaluation ◽  
Hadamard Transform ◽  
Modulation Transfer ◽  
Photothermal Deflection

The modulation transfer function of a source-encoded Hadamard transform imaging system including beam condensing optics is derived. The effects of diffraction, convolution with the encoding apertures, mask motion, and focus errors are considered explicitly. The derived equations are shown to describe resolution of Hadamard transform photothermal deflection imagers with up to 30 × condensing optics.

Modulation transfer function evaluation of linear solid-state x-ray-sensitive detectors using edge techniques

1995 ◽  
Vol 34 (22) ◽  
pp. 4937 ◽  
Author(s):  
Yue Min Zhu ◽  
Valérie Kaftandjian ◽  
Gilles Peix ◽  
Daniel Babot
Keyword(s):  
Solid State ◽  
Transfer Function ◽  
Modulation Transfer Function ◽  
Function Evaluation ◽  
Modulation Transfer ◽  
X Ray

scholarly journals Modulation transfer function evaluation of cone beam computed and microcomputed tomography by using slanted edge phantom

2019 ◽  
Author(s):  
Szabó TAMÁS BENCE
Keyword(s):  
Transfer Function ◽  
Spatial Resolution ◽  
Modulation Transfer Function ◽  
Imaging System ◽  
Ct Images ◽  
Function Evaluation ◽  
Strong Positive Correlation ◽  
Micro Ct ◽  
Modulation Transfer ◽  
Voxel Size

Modulation transfer function (MTF) is a well known and widely accepted method for evaluating the spatial resolution of a digital radiographic imaging system. In the present study our aim was to evaluate the MTF obtained from CBCT and micro-CT images. A cylinder shaped phantom designed for slanted-edge method was scanned by a CBCT device at a 100 µm isometric voxel size and by a micro-CT device at a 20 µm isometric voxel size, simultaneously. The MTF curves were calculated and the mean spatial resolutions at 10% MTF were 3.33 + 0.29 lp/mm in the case of CBCT images and 13.35 + 2.47 lp/mm in the case of micro-CT images. The values showed a strong positive correlation regarding the CBCT and the micro-CT spatial resolution values, respectively. Our results suggests that CBCT imaging devices with a voxel size of 100 µm or below might aid the validation of fine anatomical structures and allowing the opportunity for reliable micromorphometric examinations

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