point spread function(PSF)
Diagnostic performance of 18F-FDG PET/CT using point spread function reconstruction on initial staging of rectal cancer: a comparison study with conventional PET/CT and pelvic MRI
... Recently, the point spread function (PSF) reconstruc- tion technique has become commercially available for PET imaging [11, 12]. PSF reconstruction corrects pho- ton mis-positioning (parallax effect) ...
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Relationship between point spread function layers and biological microscopic image restoration based on the same space size
... of point spread function model [1] and the selection of its ...Dimensional Point Spread Function) model with the changes based on the depth ...
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A Review on Point Spread Function Estimation TechniquesRitesh Pawar, Dr. Maitreyee Dutta
... blur function is estimated with blind image restoration technique is used for enhancement in image for better ...from point spread function ...
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Quantification of myocardial blood flow with 82Rb: Validation with 15O-water using time-of-flight and point-spread-function modeling
... when point spread function (PSF) modeling is included in reconstruction, MBF esti- mates from 82 Rb PET may be higher [16]; however, such calculations were performed using an extraction model [11] ...
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Impact of Time-of-Flight and Point-Spread-Function for Respiratory Artifact Reduction in PET/CT Imaging: Focus on Standardized Uptake Value
... which is widely used in evaluation of glucose metabolism, is prone to biological and technical factors (4-6). The SUVs, however, can vary depending on the method of reconstruction and parameters that are used (7-11). ...
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Blind Deconvolution of Medical Ultrasound Images Using a Parametric Model for the Point Spread Function
... reflectiviy function (TRF)/image to be estimated respectively, n is an additive white Gaussian noise (AWGN) and H ∈ R N × N is the system impulse re- sponse/point spread function (PSF) assumed ...
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Impact of point spread function modelling and time of flight on FDG uptake measurements in lung lesions using alternative filtering strategies
... PSF: point spread function; ROI: region of interest; SNR: signal-to-noise ratio; SUV: standardised uptake value; TLG: total lesion glycolysis; TOF: time of flight; UHD: Siemens ultraHD·PET ...
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The influence of different signal-to-background ratios on spatial resolution and F18-FDG-PET quantification using point spread function and time-of-flight reconstruction
... Methods: Measurements were performed on a Siemens Biograph mCT 64 using a cylindrical phantom containing four spheres (diameter, 30 to 70 mm) filled with F18-FDG applying three SBRs (SBR1, 16:1; SBR2, 6:1; SBR3, 2:1). ...
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Point Spread Function Estimation for a Terahertz Imaging System
... estimated point spread function is tested by using it to deconvolve images of a scene containing manufactured objects with good reflective ...the point spread function estimation ...
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Evaluation of spatial dependence of point spread function-based PET reconstruction using a traceable point-like 22Na source
... a point spread function (PSF), and PSF information was incorporated into a three-dimensional (3D) iterative re- construction [4, ...a point source within the scanner and acquiring scan data at ...
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Studies on three dimensional point spread function energy distribution of biological microscopic imaging system
... Dimensional Point Spread Function) used for biological image restoration processing determines the restoration effect and restoration time ...
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Optical Performance Analysis Using a Point Spread Function and Modulation Transfer Function for W-Band Pmmw Imaging System Based on Quasi Optics Focused Array of Dielectric Rod Waveguide Antenna
... 261 Chemdan-gwagiro, Buk-Gu, Gwangju 500 712, Republic of Korea Abstract—The appropriateness of dielectric loaded antenna for the passive millimeter wave imaging application has recently been demonstrated. In this paper, ...
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Measurement of the point spread function of a noisy imaging system
... the Point Spread Function (PSF) of focused and defocused image acquisition systems, such as digital TV ...transfer function for the entire system can be ...
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Estimation of the Microscope Point Spread Function by Using an Adaptive Image Deblurring Method
... As one of the most widespread techniques in biological investigation and dynamic process, light compound microscopy has used to analyze the optical properties of biological images. The optical microscope is often used to ...
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The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy
... The IBIS telescope (Imager on Board of the INTEGRAL Satellite) (Ubertini et al. 2003), launched onboard the ma- jor ESA gamma-ray space mission INTEGRAL (Winkler et al. 2003) on October 2002, is a hard X-ray / soft γ- ...
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Point spread function modelling for wide-field small-aperture telescopes with a denoising autoencoder.
... The point spread function reflects the state of an optical telescope and it is important for the design of data post-processing ...the point spread function is hard to model ...
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Point Spread Function and Modulation Transfer Function Engineering
... This thesis has presented a novel computational imaging approach to sensor protection using point spread function engineering to redistribute laser light on the sensor effectively reducing its peak ...
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The association of tumor-to-background ratios and SUVmax deviations related to point spread function and time-of-flight F18-FDG-PET/CT reconstruction in colorectal liver metastases
... However, FDG-PET quantification is influenced by the reconstruction algorithm used [8,9]. Recent algorithms feature iterative calculations with integration of time-of- flight (TOF) analysis (to approximate the real ...
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Point-spread function reconstructed PET images of sub-centimeter lesions are not quantitative
... as function of iterations (we stopped at 6 iterations 21 subsets, which is more than commonly ...a function of lesion size (SUV curve) up to 12 mm ...
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Effect of the Illuminating Point Spread Function and Roughness on the Speckle Correlation Field
... DOI: 10.4236/opj.2019.911015 166 Optics and Photonics Journal vestigated the statistical optical properties of fully developed speckle pattern. They considered the random phases of the interfering waves are uniformly ...
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