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computer assisted diagnosis

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https://www.readbyqxmd.com/read/28712699/ct-scout-based-semi-automated-vertebral-morphometry-after-digital-image-enhancement
#1
Wojciech M Glinkowski, Jerzy Narloch
INTRODUCTION: Radiographic diagnosis of osteoporotic vertebral fracture is necessary to reduce its substantial associated morbidity. Computed tomography (CT) scout has recently been demonstrated as a reliable technique for vertebral fracture diagnosis. Software assistance may help to overcome some limitations of that diagnostics. We aimed to evaluate whether digital image enhancement improved the capacity of one of the existing software to detect fractures semi-automatically. METHODS: CT scanograms of patients suffering from osteoporosis, with or without vertebral fractures were analyzed...
June 29, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28707110/what-factors-are-associated-with-90-day-episode-of-care-payments-for-younger-patients-with-total-joint-arthroplasty
#2
Shweta Pathak, Cecilia M Ganduglia, Samir S Awad, Wenyaw Chan, John M Swint, Robert O Morgan
BACKGROUND: Total joint arthroplasty (TJA) has been identified as a procedure with substantial variations in inpatient and postacute care payments. Most studies in this area have focused primarily on the Medicare population and rarely have characterized the younger commercially insured populations. Understanding the inpatient and postdischarge care service-component differences across 90-day episodes of care and factors associated with payments for younger patients is crucial for successful implementation of bundled payments in TJA in non-Medicare populations...
July 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28706850/pneumothorax-caused-by-cystic-and-nodular-lung-metastases-from-a-malignant-uterine-perivascular-epithelioid-cell-tumor-pecoma
#3
Shouichi Okamoto, Moegi Komura, Yasuhisa Terao, Aiko Kurisaki-Arakawa, Takuo Hayashi, Tsuyoshi Saito, Shinsaku Togo, Akira Shiokawa, Keiko Mitani, Etsuko Kobayashi, Toshio Kumasaka, Kazuhisa Takahashi, Kuniaki Seyama
Perivascular epithelioid cell tumors (PEComas) are mesenchymal neoplasms with immunoreactivity for both melanocytic and smooth muscle markers. PEComas occur at multiple sites, and malignant PEComas can undergo metastasis, recurrence and aggressive clinical courses. Although the lung is a common metastatic site of PEComas, they usually appear as multiple nodules but rarely become cystic or cavitary. Here, we describe a female patient whose lungs manifested multiple cystic, cavity-like and nodular metastases 3 years after the resection of uterine tumors tentatively diagnosed as epithelioid smooth muscle tumors with uncertain malignant potential...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28697731/texture-analysis-of-pulmonary-parenchymateous-changes-related-to-pulmonary-thromboembolism-in-dogs-a-novel-approach-using-quantitative-methods
#4
C B Marschner, M Kokla, J M Amigo, E A Rozanski, B Wiinberg, F J McEvoy
BACKGROUND: Diagnosis of pulmonary thromboembolism (PTE) in dogs relies on computed tomography pulmonary angiography (CTPA), but detailed interpretation of CTPA images is demanding for the radiologist and only large vessels may be evaluated. New approaches for better detection of smaller thrombi include dual energy computed tomography (DECT) as well as computer assisted diagnosis (CAD) techniques. The purpose of this study was to investigate the performance of quantitative texture analysis for detecting dogs with PTE using grey-level co-occurrence matrices (GLCM) and multivariate statistical classification analyses...
July 11, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28694079/distal-ureteral-diameter-ratio-is-predictive-of-breakthrough-febrile-urinary-tract-infection
#5
Angela M Arlen, Traci Leong, Paul J Guidos, Siobhan E Alexander, Christopher S Cooper
PURPOSE: Distal ureteral diameter ratio (UDR) is an objective measure that is prognostic of spontaneous vesicoureteral reflux (VUR) resolution. Along with likelihood of resolution, improved identification of children at risk for recurrent febrile urinary tract infections (fUTI) may impact management decisions. We evaluated the utility of UDR as a predictive factor for breakthrough fUTI. MATERIALS AND METHODS: Children with primary VUR and detailed voiding cystourethrogram (VCUG) were identified...
July 7, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28693906/reproducible-computer-assisted-quantification-of-myocardial-perfusion-with-contrast-enhanced-ultrasound
#6
Yuanwei Li, Navtej Chahal, Roxy Senior, Meng-Xing Tang
Myocardial perfusion can be quantified by myocardial contrast echocardiography (MCE) and is used for the diagnosis of coronary artery disease (CAD). However, existing MCE quantification software is highly operator dependent and has poor reproducibility and ease of usage. The aim of this study was to develop robust and easy-to-use software that can perform MCE quantification accurately, reproducibly and rapidly. The developed software has the following features: (i) semi-automatic segmentation of the myocardium; (ii) automatic rejection of MCE data with poor image quality; (iii) automatic computation of perfusion parameters such as myocardial blood flow (MBF)...
July 7, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28686499/pathologists-computer-assisted-diagnosis-a-mock-up-of-a-prototype-information-system-to-facilitate-automation-of-pathology-sign-out
#7
Navid Farahani, Zheng Liu, Dylan Jutt, Jeffrey L Fine
CONTEXT: - Pathologists' computer-assisted diagnosis (pCAD) is a proposed framework for alleviating challenges through the automation of their routine sign-out work. Currently hypothetical, pCAD is based on a triad of advanced image analysis, deep integration with heterogeneous information systems, and a concrete understanding of traditional pathology workflow. Prototyping is an established method for designing complex new computer systems such as pCAD. OBJECTIVE: - To describe, in detail, a prototype of pCAD for the sign-out of a breast cancer specimen...
July 7, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28677423/usefulness-of-cytologic-criteria-in-ultrasound-guided-fine-needle-aspirates-from-subcentimeter-canine-mammary-tumors
#8
Alessio Pierini, Francesca Millanta, Roberta Zanforlin, Iacopo Vannozzi, Veronica Marchetti
We determined cytologic features of histologically confirmed subcentimeter canine mammary tumors (CMTs) to determine reasonable criteria for an accurate cytologic diagnosis. Fifty-three CMTs from 28 bitches were included. All cytologic samples were collected by ultrasound-guided fine-needle aspiration biopsy, stained with May-Grünwald/Giemsa, and retrospectively evaluated using a scoring system established for 18 cytologic features. Mean nuclear area (MNA) was also measured for each sample by a computer-assisted program...
July 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28671642/acoustic-sensing-and-ultrasonic-drug-delivery-in-multimodal-theranostic-capsule-endoscopy
#9
Fraser R Stewart, Yongqiang Qiu, Holly S Lay, Ian P Newton, Benjamin F Cox, Mohammed A Al-Rawhani, James Beeley, Yangminghao Liu, Zhihong Huang, David R S Cumming, Inke Näthke, Sandy Cochran
Video capsule endoscopy (VCE) is now a clinically accepted diagnostic modality in which miniaturized technology, an on-board power supply and wireless telemetry stand as technological foundations for other capsule endoscopy (CE) devices. However, VCE does not provide therapeutic functionality, and research towards therapeutic CE (TCE) has been limited. In this paper, a route towards viable TCE is proposed, based on multiple CE devices including important acoustic sensing and drug delivery components. In this approach, an initial multimodal diagnostic device with high-frequency quantitative microultrasound that complements video imaging allows surface and subsurface visualization and computer-assisted diagnosis...
July 3, 2017: Sensors
https://www.readbyqxmd.com/read/28670188/an-uncommon-variant-of-an-uncommon-disease-a-caucasian-adolescent-with-apical-hypertrophic-cardiomyopathy-diagnosed-with-myocardial-perfusion-imaging
#10
Rami Kassem Zein, Zaid Al-Faham, Jason A Mouabbi, Edouard R Daher
Apical hypertrophic cardiomyopathy (ApHCM) is a subtype of HCM. This variant is more common in the Asian population when compared to North American patients. Patients may present with arrhythmias, heart failure, myocardial infarction, chest discomfort, fatigue, and presyncope or syncope. Initial evaluation requires electrocardiogram and two-dimensional echocardiogram. T-wave inversion in the precordial leads as well as hypertrophy of the left ventricle is hallmarks of the disease. Cardiac magnetic resonance (CMR) imaging is the most specific and sensitive imaging modality...
July 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28664265/-networks-involved-in-motor-cognition-physiology-and-pathophysiology-of-apraxia
#11
REVIEW
M Martin, J Hermsdörfer, S Bohlhalter, P H Weiss
Apraxia is an umbrella term for different disorders of higher motor abilities that are not explained by elementary sensorimotor deficits (e. g. paresis or ataxia). Characteristic features of apraxia that are easy to recognize in clinical practice are difficulties in pantomimed or actual use of tools as well as in imitation of meaningless gestures. Apraxia is bilateral, explaining the cognitive motor disorders and occurs frequently (but not exclusively) after left hemispheric lesions, as well as in neurodegenerative diseases, such as corticobasal syndrome and Alzheimer's disease...
June 29, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28655486/vaginal-atrophy-in-breast-cancer-survivors-attitude-and-approaches-among-oncologists
#12
Nicoletta Biglia, Valentina Elisabetta Bounous, Marta D'Alonzo, Laura Ottino, Valentina Tuninetti, Elisabetta Robba, Tania Perrone
BACKGROUND: Vulvovaginal atrophy (VVA) is a relevant problem for breast cancer survivors (BCSs), in particular for those who receive aromatase inhibitors (AIs). We conducted a survey, to assess the attitude of oncologists toward the diagnosis and treatment of VVA in BCSs. MATERIALS AND METHODS: In 2015, 120 computer-assisted Web interviews were performed among breast oncologists. RESULTS: According to oncologists' perceptions, 60% of postmenopausal BCSs and 39...
May 19, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28649475/solid-pseudopapillary-tumor-of-the-pancreas-an-unusual-cause-of-abdominal-pain
#13
Talal El Imad, Fady G Haddad, Mayurathan Kesavan, Liliane Deeb, Sherif Andrawes
Solid-pseudopapillary neoplasm (SPN) of the pancreas is a rare tumor that accounts for less than one percent of pancreatic tumors. The diagnosis could be challenging as SPN tend to manifest with nonspecific abdominal symptoms, variable radiological features, and inconsistent morphology. The cellular origin of SPN is unclear and might involve ductal, acinar and endocrine stem cells.  We report a rare case of a 27-year-old female who presented with intermittent abdominal pain for two years, associated with a decrease in appetite...
May 16, 2017: Curēus
https://www.readbyqxmd.com/read/28642733/a-case-of-pulmonary-carcinoid-tumor-with-a-superimposed-aspergilloma-presenting-as-a-covert-ectopic-adrenocorticotropic-hormone-syndrome
#14
Kyoung Jin Kim, Ji Hee Yu, Nan Hee Kim, Young Hye Kim, Young Sik Kim, Ji A Seo
Ectopic adrenocorticotropic hormone (ACTH) syndrome is a challenging diagnosis only responsible for approximately 10% of Cushing syndrome cases. It has been associated with a variety of benign and malignant tumors including a carcinoid tumor accompanied by aspergilloma in our case that was significantly difficult to be detected. We report a patient over 70 years old with uncontrolled hypertension and hypokalemia presenting with generalized edema. Laboratory results revealed ACTH-dependent Cushing syndrome, but imaging studies did not show any discrete lesions secreting ACTH...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28636784/audio-computer-assisted-survey-interview-and-patient-navigation-to-increase-chronic-viral-hepatitis-diagnosis-and-linkage-to-care-in-urban-health-clinics
#15
A N de la Torre, I Castaneda, M Ahmad, N Ekholy, N Tham, I B Herrera, P Beaty, R J Malapero, Farhan Ayoub, J Slim, M B Johnson
Intravenous drug use and sexual practices account for 60% of hepatitis C (HCV) and B (HBV) infection. Disclosing these activities can be embarrassing, reduce risk reporting, blood testing and diagnosis. In diagnosed patients, linkage to care remains a challenge. Audio-computer assisted survey interview (Audio-CASI) was used to guide HCV and HBV infection testing in urban clinics. Risk reporting, blood-testing, and serology results were compared to historical controls. A Patient Navigator (PN) followed up blood test results and provided patients with positive serology linkage to care...
June 21, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28634041/a-machine-learning-algorithm-toward-color-analysis-for-chronic-liver-disease-classification-employing-ultrasound-shear-wave-elastography
#16
Ilias Gatos, Stavros Tsantis, Stavros Spiliopoulos, Dimitris Karnabatidis, Ioannis Theotokas, Pavlos Zoumpoulis, Thanasis Loupas, John D Hazle, George C Kagadis
The purpose of the present study was to employ a computer-aided diagnosis system that classifies chronic liver disease (CLD) using ultrasound shear wave elastography (SWE) imaging, with a stiffness value-clustering and machine-learning algorithm. A clinical data set of 126 patients (56 healthy controls, 70 with CLD) was analyzed. First, an RGB-to-stiffness inverse mapping technique was employed. A five-cluster segmentation was then performed associating corresponding different-color regions with certain stiffness value ranges acquired from the SWE manufacturer-provided color bar...
June 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28631633/significance-of-vascular-endothelial-growth-factor-and-cd31-and-morphometric-analysis-of-microvessel-density-by-cd31-receptor-expression-as-an-adjuvant-tool-in-diagnosis-of-psoriatic-lesions-of-skin
#17
Nitika Chawla, Sant Prakash Kataria, Kamal Aggarwal, Pardeep Chauhan, Dinesh Kumar
BACKGROUND: Pathogenesis of psoriasis is a debated issue. Several mechanisms have been proposed to identify the etiology and pathogenesis so that specific treatments can be given to patients with psoriasis. AIMS: (1) To compare pattern and distribution of vascular endothelial growth factor (VEGF) and CD31 in patients with psoriasis and other psoriasiform lesions of skin. (2) To study the correlation between VEGF and CD31 expression, clinical severity, and histopathology of psoriasiform lesions of skin...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631079/development-of-pancreatic-cancer-is-predictable-well-in-advance-using-contrast-enhanced-ct-a-case-cohort-study
#18
Wataru Gonoi, Takana Yamakawa Hayashi, Hidemi Okuma, Masaaki Akahane, Yousuke Nakai, Suguru Mizuno, Ryosuke Tateishi, Hiroyuki Isayama, Kazuhiko Koike, Kuni Ohtomo
OBJECTIVES: To investigate the radiological findings prognostic for the development of pancreatic adenocarcinoma in a cohort of patients with hepatocellular carcinoma, using multiphasic computed tomography (CT). METHODS: A case-cohort study performed in a single university hospital. A database of patients who received hepatocellular carcinoma (HCC) treatment and trimonthly follow-up with four-phase dynamic CT was used (n = 1848). The cohort group was randomly extracted from the database (n = 103)...
June 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28623846/sonocad-a-software-to-solve-the-dilemma-of-the-prenatal-diagnosis-of-fetal-syndromes
#19
Mahmoud Abdelnaby, Abdulmeneam Fawzi, Manal Swelem, Hisham Elgammal, Hamdy Elgammal
OBJECTIVE: The aim of this work is to develop an efficient, user friendly, time saving computer software program specified with prenatal diagnosis, based solely on ultrasound findings provided by the sonographer. MATERIALS AND METHOD: SonoCAD (Sonographyic Computer Assisted Diagnosis) program was developed in 4 phases. Phase I, data gathering phase. Phase II the software development phase in which the source code of the software was developed. Phase III, system testing phase, was divided into 2 steps...
June 17, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28617686/imaging-adult-patients-with-coarctation-of-the-aorta
#20
Akanksha N Thakkar, Ponraj Chinnadurai, C Huie Lin
PURPOSE OF REVIEW: To provide an overview of current recommendations and techniques used to image coarctations of the aorta. RECENT FINDINGS: Imaging of coarctation of the aorta in adults is moving away from conventional techniques such as echocardiography and invasive angiography. Echocardiography may assist in making the diagnosis but is limited in its ability to quantify the severity of coarctations. Current guidelines recommend that every patient with a coarctation must undergo a computed tomography (CT) or MRI scan for accurate delineation of morphology...
June 15, 2017: Current Opinion in Cardiology
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