Image Analysis Does Deconvolution Help图像定量分析反褶积的帮助ppt课件.pptVIP

Image Analysis Does Deconvolution Help图像定量分析反褶积的帮助ppt课件.ppt

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Image Analysis Does Deconvolution Help图像定量分析反褶积的帮助ppt课件

BMED-4800/ECSE-4800 Introduction to Subsurface Imaging Systems;Review of Last Lecture;Outline of Course Topics;/meetings/amos2/pdf/26-5959-83142-414.pdf ;Digital Detector Front End;Detector Details;Selenium based Detector;Performance Metrics;Signal-to-noise Ratio (SNR);Quantum noise;Poisson Distribution;Signal-to-noise ratio;Other Measures of Image Quality;MTF=1;MTF=0.5;MTF;Modulation Transfer Function;MTF For Direct, Indirect, and Screen Film;Measures of Image Quality-DQE;DQE;where f is the spatial frequency (lp/mm), X is the exposure (mR) and : S = Median Signal Level (cts), i.e. amplitude of information MTF = Modulation Transfer Function NPS = Noise Power Spectrum (cts^2 * mm^2) C = Incident Xray Fluence (xrays / (mm^2 * mR) DQE describes the measured SNR in relation to an ideal detector. SNR2 is deduced from the ratio of MTF^2 (signal^2) to the NPS (noise^2);/meetings/amos2/pdf/26-5959-83142-414.pdf ;Calibration of Digital Detector;Calibration of Digital Detector;Calibration of Digital Detector;Calibration of Digital Detector;Apply Corrections;Apply Corrections;Tomosynthesis;Advanced Applications ;3D Breast Imaging - Tomosynthesis;Tomosynthesis Concept;Prototype System Parameters;Tomosynthesis;Image Reconstruction in Tomo;Reconstruction Concept – Shift and Add;An Example… Standard 2D x-ray;Tomosynthesis – Missed Cancer;Tomosynthesis;An Example… 3D Tomosynthesis;;Receiver Operating Characteristics;Receiver Operating Characteristic (ROC) curves;2 x 2 Decision Matrix;ROC curves (cont.);Summary;Homework;Instructor Contact Information;Instructor Contact Information

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