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https://www.readbyqxmd.com/read/28096730/methodology-for-developing-evidence-based-clinical-imaging-guidelines-joint-recommendations-by-korean-society-of-radiology-and-national-evidence-based-healthcare-collaborating-agency
#1
REVIEW
Sol Ji Choi, Woo Kyoung Jeong, Ae Jeong Jo, Jin A Choi, Min-Jeong Kim, Min Lee, Seung Eun Jung, Kyung Hyun Do, Hwan Seok Yong, Seungsoo Sheen, Miyoung Choi, Jung Hwan Baek
This paper is a summary of the methodology including protocol used to develop evidence-based clinical imaging guidelines (CIGs) in Korea, led by the Korean Society of Radiology and the National Evidence-based Healthcare Collaborating Agency. This is the first protocol to reflect the process of developing diagnostic guidelines in Korea. The development protocol is largely divided into the following sections: set-up, process of adaptation, and finalization. The working group is composed of clinical imaging experts, and the developmental committee is composed of multidisciplinary experts to validate the methodology...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28093261/experimental-evaluation-of-a-new-morphological-approximation-of-the-articular-surfaces-of-the-ankle-joint
#2
Claudio Belvedere, Sorin Siegler, Andrea Ensini, Jason Toy, Paolo Caravaggi, Ramya Namani, Giulia Giannini, Stefano Durante, Alberto Leardini
The mechanical characteristics of the ankle such as its kinematics and load transfer properties are influenced by the geometry of the articulating surfaces. A recent, image-based study found that these surfaces can be approximated by a saddle-shaped, skewed, truncated cone with its apex oriented laterally. The goal of this study was to establish a reliable experimental technique to study the relationship between the geometry of the articular surfaces of the ankle and its mobility and stability characteristics and to use this technique to determine if morphological approximations of the ankle surfaces based on recent discoveries, produce close to normal behavior...
January 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28090247/optimal-parameter-map-estimation-for-shape-representation-a-generative-approach
#3
Shireen Y Elhabian, Praful Agrawal, Ross T Whitaker
Probabilistic label maps are a useful tool for important medical image analysis tasks such as segmentation, shape analysis, and atlas building. Existing methods typically rely on blurred signed distance maps or smoothed label maps to model uncertainties and shape variabilities, which do not conform to any generative model or estimation process, and are therefore suboptimal. In this paper, we propose to learn probabilistic label maps using a generative model on given set of binary label maps. The proposed approach generalizes well on unseen data while simultaneously capturing the variability in the training samples...
April 2016: Proceedings of the IEEE International Symposium on Biomedical Imaging: from Nano to Macro
https://www.readbyqxmd.com/read/28089912/hiding-clinical-information-in-medical-images-a-new-high-capacity-and-reversible-data-hiding-technique
#4
Shabir A Parah, Farhana Ahad, Javaid A Sheikh, G M Bhat
A new high capacity and reversible data hiding scheme for e-healthcare applications has been presented in this paper. Pixel to Block (PTB) conversion technique has been used as an effective and computationally efficient alternative to interpolation for the cover image generation to ensure reversibility of medical images. A fragile watermark and Block Checksum (computed for each 4 × 4 block) have been embedded in the cover image for facilitating tamper detection and tamper localization, and hence content authentication at receiver...
January 12, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28087402/accuracy-is-in-the-eyes-of-the-pathologist-the-visual-interpretive-process-and-diagnostic-accuracy-with-digital-whole-slide-images
#5
Tad T Brunyé, Ezgi Mercan, Donald L Weaver, Joann G Elmore
Digital whole slide imaging is an increasingly common medium in pathology, with application to education, telemedicine, and rendering second opinions. It has also made it possible to use eye tracking devices to explore the dynamic visual inspection and interpretation of histopathological features of tissue while pathologists review cases. Using whole slide images, the present study examined how a pathologist's diagnosis is influenced by fixed case-level factors, their prior clinical experience, and their patterns of visual inspection...
January 10, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28086892/pressure-ulcer-image-segmentation-technique-through-synthetic-frequencies-generation-and-contrast-variation-using-toroidal-geometry
#6
Ortiz P David, Daniel Sierra-Sosa, Begoña García Zapirain
BACKGROUND: Pressure ulcers have become subject of study in recent years due to the treatment high costs and decreased life quality from patients. These chronic wounds are related to the global life expectancy increment, being the geriatric and physical disable patients the principal affected by this condition. Injuries diagnosis and treatment usually takes weeks or even months by medical personel. Using non-invasive techniques, such as image processing techniques, it is possible to conduct an analysis from ulcers and aid in its diagnosis...
January 6, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28081186/mechanical-compression-effects-on-the-secretion-of-vwf-and-il-8-by-cultured-human-vein-endothelium
#7
Dar Weiss, Sharon Avraham, Ruth Guttlieb, Lee Gasner, Alina Lotman, Oren M Rotman, Shmuel Einav
Short peripheral catheters are ubiquitous in today's healthcare environment enabling effective delivery of fluids and medications directly into a patient's vasculature. However, complications related to their use, such as short peripheral catheter thrombophlebitis (SPCT), affect up to 80% of hospitalized patients. While indwelling within the vein, the catheters exert prolonged constant pressure upon the endothelium which can trigger inflammation processes. We have developed and studied an in-vitro model of cultured endothelial cells subjected to mechanical compression of modular self-designed weights, and explored their inflammatory response by quantification of two key biomarkers- vWF and IL-8...
2017: PloS One
https://www.readbyqxmd.com/read/28078508/prioritization-of-liver-mri-for-distinguishing-focal-lesions
#8
Qinghua Su, Shusheng Bi, Xuedong Yang
Liver cancer is one of the leading causes of cancer-related mortality worldwide. Magnetic resonance imaging (MRI) is a non-invasive imaging technique that is often used by radiologists for diagnosis and surgical planning. Analysis of a large amount of liver MRI data for each patient limits the radiologist's efficiency and may lead to misdiagnoses. The redundant MRI data, especially from dynamic contrast enhanced (DCE) sequences, is also a bottleneck in transmitting the images via the internet or PACS for remote consultancy in a reasonable amount of time...
January 4, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28078103/the-potential-of-spectral-domain-optical-coherence-tomography-imaging-based-retinal-biomarkers
#9
REVIEW
Prateep Phadikar, Sandeep Saxena, Surabhi Ruia, Timothy Y Y Lai, Carsten H Meyer, Dean Eliott
BACKGROUND: Biomarker", a merged word of "biological marker", refers to a broad subcategory of medical signs that objectively indicate the state of health, and well-being of an individual. Biomarkers hold great promise for personalized medicine as information gained from diagnostic or progression markers can be used to tailor treatment to the individual for highly effective intervention in the disease process. Optical coherence tomography (OCT) has proved useful in identifying various biomarkers in ocular and systemic diseases...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28072851/a-secure-and-efficient-scalable-secret-image-sharing-scheme-with-flexible-shadow-sizes
#10
Dong Xie, Lixiang Li, Haipeng Peng, Yixian Yang
In a general (k, n) scalable secret image sharing (SSIS) scheme, the secret image is shared by n participants and any k or more than k participants have the ability to reconstruct it. The scalability means that the amount of information in the reconstructed image scales in proportion to the number of the participants. In most existing SSIS schemes, the size of each image shadow is relatively large and the dealer does not has a flexible control strategy to adjust it to meet the demand of differen applications...
2017: PloS One
https://www.readbyqxmd.com/read/28070776/computer-assisted-delineation-of-cerebral-infarct-from-diffusion-weighted-mri-using-gaussian-mixture-model
#11
Manas Kumar Nag, Subhranil Koley, Debarghya China, Anup Kumar Sadhu, Ravikanth Balaji, Siddharth Ghosh, Chandan Chakraborty
PURPOSE: Diffusion-weighted imaging (DWI) is a widely used medical imaging modality for diagnosis and monitoring of cerebral stroke. The identification of exact location of stroke lesion helps in perceiving its characteristics, an essential part of diagnosis and treatment planning. This task is challenging due to the typical shape of the stroke lesion. This paper proposes an efficient method for computer-aided delineation of stroke lesions from DWI images. METHOD: Proposed methodology comprises of three steps...
January 9, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28069515/a-new-method-of-content-based-medical-image-retrieval-and-its-applications-to-ct-imaging-sign-retrieval
#12
Ling Ma, Xiabi Liu, Yan Gao, Yanfeng Zhao, Xinming Zhao, Chunwu Zhou
This paper proposes a new method of content based medical image retrieval through considering fused, context-sensitive similarity. Firstly, we fuse the semantic and visual similarities between the query image and each image in the database as their pairwise similarities. Then, we construct a weighted graph whose nodes represent the images and edges measure their pairwise similarities. By using the shortest path algorithm over the weighted graph, we obtain a new similarity measure, context-sensitive similarity measure, between the query image and each database image to complete the retrieval process...
January 6, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28069356/radiology-reports-what-you-think-you-re-saying-and-what-they-think-you-re-saying
#13
Bonmyong Lee, Matthew T Whitehead
BACKGROUND: Image interpretation and translation into written language is an imperfect process. Yet, the radiology report represents the link between radiologist's opinion and patient's images. Increased access to images through remote viewing stations has made direct communication between radiologists and clinicians less commonplace. We are interested in how accurately the descriptive contents within radiology reports convey the feelings of the radiologist to the referring clinician...
November 16, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28069255/is-urgent-ct-angiography-necessary-in-cases-of-acute-lower-gastrointestinal-bleeding
#14
A Martín Díaz, L Fernández Rodríguez, M Martí de Gracia
Acute lower gastrointestinal bleeding usually presents as hematochezia, rectal bleeding or melena and represents 1-2% of the medical appointments in the Emergency Services. Mortality reaches the 30-40% and it is highly related with the severity and associated comorbidity. Most clinical practice guidelines include colonoscopy at some point in the diagnostic and therapeutic process (urgent for severe cases and ambulatory for mild ones) and look for predictors of severity. In the last years, there have been numerous studies where is clear the relevance and complementarity of advanced diagnostic imaging techniques, gradually incorporated as an alternative or second step in severe cases...
January 6, 2017: Radiología
https://www.readbyqxmd.com/read/28066971/the-association-between-diffusion-mri-defined-infarct-volume-and-nihss-score-in-patients-with-minor-acute-stroke
#15
Shadi Yaghi, Charlotte Herber, Amelia K Boehme, Howard Andrews, Joshua Z Willey, Sara K Rostanski, Matthew Siket, Mahesh V Jayaraman, Ryan A McTaggart, Karen L Furie, Randolph S Marshall, Ronald M Lazar, Bernadette Boden-Albala
BACKGROUND: Prior studies have shown a correlation between the National Institutes of Health Stroke Scale (NIHSS) and stroke volume on diffusion weighted imaging (DWI); data are more limited in patients with minor stroke. We sought to determine the association between DWI lesion(s) volume and the (1) total NIHSS score and (2) NIHSS component scores in patients with minor stroke. METHODS: We included all patients with minor stroke (NIHSS 0-5) enrolled in the Stroke Warning Information and Faster Treatment study...
January 9, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28066529/biopsy-1-2-3-in-dermatologic-surgery-improving-smartphone-use-to-avoid-wrong-site-surgery
#16
James T Highsmith, David A Weinstein, M Jason Highsmith, Jeremy R Etzkorn
The smartphone has become a ubiquitous tool in modern culture. Given the current high quality of smartphone cameras, they should be considered a valuable tool for the dermatologic surgeon in the pre-operative consultation. The purpose of this technical note is to describe a methodology using smartphone camera technology to improve the process for capturing biopsy site photographs and including those photos in decision making to maximize cutaneous surgical outcomes. This technical note describes a three-step procedure (BIOPSY 1-2-3) to simplify and standardize the protocol for capturing a biopsy site photograph using the patient's own smartphone...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28064111/modification-of-the-medical-exclusion-criterion-in-dsm-5-social-anxiety-disorder-comorbid-obesity-as-an-example
#17
Kristy L Dalrymple, Emily Walsh, Lia Rosenstein, Iwona Chelminski, Mark Zimmerman
BACKGROUND: The DSM 5 modified the medical exclusion criterion from DSM-IV, which now allows for a diagnosis of social anxiety disorder (SAD) to be given if the fears are related only to the medical condition (e.g., obesity) yet cause significant impairment or distress. METHODS: To examine this modification, the current study compared bariatric surgery candidates with DSM-IV SAD (n=135), modified SAD (clinically significant social fears related to obesity only; n=40), and no history of Axis I disorders (n=616) on variables related to pre-surgical problematic eating behaviors, body image dissatisfaction, functional impairment, and other characteristics related to bariatric surgery...
January 3, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28061777/whatsapp-messenger-as-a-tool-to-supplement-medical-education-for-medical-students-on-clinical-attachment
#18
Lewis Raiman, Richard Antbring, Asad Mahmood
BACKGROUND: Instant messaging applications have the potential to improve and facilitate communication between hospital doctors and students, hence generating and improving learning opportunities. This study aims to demonstrate the feasibility and acceptability of instant messaging communication to supplement medical education for medical students whilst on clinical attachment. METHODS: A total of 6 WhatsApp Messenger (WhatsApp Inc.) groups were created for medical students on clinical attachment...
January 6, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28060307/lateral-chronic-cranial-window-preparation-enables-in-vivo-observation-following-distal-middle-cerebral-artery-occlusion-in-mice
#19
Simon H Bayerl, Melina Nieminen-Kelhä, Thomas Broggini, Peter Vajkoczy, Vincent Prinz
Focal cerebral ischemia (i.e., ischemic stroke) may cause major brain injury, leading to a severe loss of neuronal function and consequently to a host of motor and cognitive disabilities. Its high prevalence poses a serious health burden, as stroke is among the principal causes of long-term disability and death worldwide(1). Recovery of neuronal function is, in most cases, only partial. So far, treatment options are very limited, in particular due to the narrow time window for thrombolysis(2,3). Determining methods to accelerate recovery from stroke remains a prime medical goal; however, this has been hampered by insufficient mechanistic insights into the recovery process...
December 29, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059233/cytopathological-image-analysis-using-deep-learning-networks-in-microfluidic-microscopy
#20
G Gopakumar, K Hari Babu, Deepak Mishra, Sai Siva Gorthi, Gorthi R K Sai Subrahmanyam
Cytopathologic testing is one of the most critical steps in the diagnosis of diseases, including cancer. However, the task is laborious and demands skill. Associated high cost and low throughput drew considerable interest in automating the testing process. Several neural network architectures were designed to provide human expertise to machines. In this paper, we explore and propose the feasibility of using deep-learning networks for cytopathologic analysis by performing the classification of three important unlabeled, unstained leukemia cell lines (K562, MOLT, and HL60)...
January 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
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