Journal of Digital Imaging

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Budget Variance Analysis of a Departmentwide Implementation of a PACS at a Major Academic Medical Center
Journal of Digital Imaging - Tập 19 - Trang 66-71 - 2006
Arra Suresh Reddy, Shaun Loh, Robert A. Kane
In this study, the costs and cost savings associated with departmentwide implementation of a picture archiving and communication system (PACS) as compared to the projected budget at the time of inception were evaluated. An average of $214,460 was saved each year with a total savings of $1,072,300 from 1999 to 2003, which is significantly less than the $2,943,750 projected savings. This discrepancy...... hiện toàn bộ
Digital Radiographic Image Denoising Via Wavelet-Based Hidden Markov Model Estimation
Journal of Digital Imaging - Tập 18 - Trang 154-167 - 2005
Ricardo J. Ferrari, Robin Winsor
This paper presents a technique for denoising digital radiographic images based upon the wavelet-domain Hidden Markov tree (HMT) model. The method uses the Anscombe’s transformation to adjust the original image, corrupted by Poisson noise, to a Gaussian noise model. The image is then decomposed in different subbands of frequency and orientation responses using the dual-tree complex wavelet transfo...... hiện toàn bộ
An Algorithm for Intelligent Sorting of CT-Related Dose Parameters
Journal of Digital Imaging - Tập 25 - Trang 179-188 - 2011
Tessa S. Cook, Stefan L. Zimmerman, Scott R. Steingall, William W. Boonn, Woojin Kim
Imaging centers nationwide are seeking innovative means to record and monitor computed tomography (CT)-related radiation dose in light of multiple instances of patient overexposure to medical radiation. As a solution, we have developed RADIANCE, an automated pipeline for extraction, archival, and reporting of CT-related dose parameters. Estimation of whole-body effective dose from CT dose length p...... hiện toàn bộ
Information Entropy Measure for Evaluation of Image Quality
Journal of Digital Imaging - Tập 21 - Trang 338-347 - 2007
Du-Yih Tsai, Yongbum Lee, Eri Matsuyama
This paper presents a simple and straightforward method for synthetically evaluating digital radiographic images by a single parameter in terms of transmitted information (TI). The features of our proposed method are (1) simplicity of computation, (2) simplicity of experimentation, and (3) combined assessment of image noise and resolution (blur). Two acrylic step wedges with 0–1–2–3–4–5 and 0–2–4–...... hiện toàn bộ
Ultrasound Prostate Segmentation Using Adaptive Selection Principal Curve and Smooth Mathematical Model
Journal of Digital Imaging -
Tao Peng, Yiyun Wu, Jing Zhao, Caishan Wang, Jin Wang, Jing Cai
Validity and Reliability of Active Shape Models for the Estimation of Cobb Angle in Patients with Adolescent Idiopathic Scoliosis
Journal of Digital Imaging - Tập 21 - Trang 208-218 - 2007
Shannon Allen, Eric Parent, Maziyar Khorasani, Douglas L. Hill, Edmond Lou, James V. Raso
Choosing the most suitable treatment for scoliosis relies heavily on accurate and reproducible Cobb angle measurement from successive radiographs. The objective is to reduce variability of Cobb angle measurement by reducing user intervention and bias. Custom software to increase automation of the Cobb angle measurement from posteroanterior radiographs was developed using active shape models. Valid...... hiện toàn bộ
Binary Classification of Alzheimer’s Disease Using sMRI Imaging Modality and Deep Learning
Journal of Digital Imaging - Tập 33 - Trang 1073-1090 - 2020
Ahsan Bin Tufail, Yong-Kui Ma, Qiu-Na Zhang
Alzheimer’s disease (AD) is an irreversible devastative neurodegenerative disorder associated with progressive impairment of memory and cognitive functions. Its early diagnosis is crucial for the development of possible future treatment option(s). Structural magnetic resonance images (sMRI) play an important role to help in understanding the anatomical changes related to AD especially in its early...... hiện toàn bộ
Characterization of monochrome CRT display systems in the field
Journal of Digital Imaging - Tập 12 - Trang 152-165 - 1999
Hans Roehrig, Charles E. Willis, Michael A. Damento
This article presents a review of image quality assessment methods for monochrome CRTs in the field as opposed to the laboratory. The review includes image quality programs at the University of Washington, the University of Texas at Houston, the University of Michigan, and the University of Arizona. CRT manufacturers and display-board suppliers also are concerned with image quality, particularly w...... hiện toàn bộ
MR Denoising Increases Radiomic Biomarker Precision and Reproducibility in Oncologic Imaging
Journal of Digital Imaging - Tập 34 - Trang 1134-1145 - 2021
Matías Fernández Patón, Leonor Cerdá Alberich, Cinta Sangüesa Nebot, Blanca Martínez de las Heras, Diana Veiga Canuto, Adela Cañete Nieto, Luis Martí-Bonmatí
Several noise sources, such as the Johnson–Nyquist noise, affect MR images disturbing the visualization of structures and affecting the subsequent extraction of radiomic data. We evaluate the performance of 5 denoising filters (anisotropic diffusion filter (ADF), curvature flow filter (CFF), Gaussian filter (GF), non-local means filter (NLMF), and unbiased non-local means (UNLMF)), with 33 differe...... hiện toàn bộ
The Keratectasia Volume (KEV) in Corneal Topography to Evaluate the Effect of Corneal Collagen Cross-linking in Pediatric Keratoconus
Journal of Digital Imaging - Tập 36 - Trang 1752-1759 - 2023
Xiangjun Wang, Bo Zhang, Zhiwei Li, Mengyao Li, Jia Wang, Guoying Mu
The study aimed to evaluate the keratectasia volume (KEV) before and after corneal cross-linking (CXL) in pediatric patients. This study included 40 eyes of 25 pediatric patients (10–19 years) undergoing standard CXL. The support vector machine (SVM) algorithm was applied to transform mass pixels in corneal topography into a three-dimensioned model to calculate the KEV. The KEV, Kmax, K1, K2, Kave...... hiện toàn bộ
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