The Influence for Image Quality of Diffusion Weighted Image by Gradient Coil Systems

Image Quality Assessment Using Gradient-weighted Structural Similarity

Digital images are subject to a wide variety of distortions during image processing application, and it is necessary to develop objective image quality metric to evaluate the degradation automatically. Images are prepared for human eyes so that the assessment result must be consistent with human visual effect. Structure Similarity (SSIM), a well-known objective image quality assessment, is prop...

Noise estimation for diffusion weighted MR image

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Evaluation of the Influence of Exposure Index on Image Quality and Radiation Dose

Introduction: The introduction of digital radiography has led to a significant problem in terms of dose creep. To address this problem, manufacturers have established a set of exposure indicators (EI) as a feedback mechanism to safeguard against overexposure. The EI is the measure of incident exposure to the detector that is directly proportional to the signal-to-noise...

Normalized Gradient Vector Diffusion and Image Segmentation