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https://www.readbyqxmd.com/read/29770240/diagnosis-and-prediction-of-periodontally-compromised-teeth-using-a-deep-learning-based-convolutional-neural-network-algorithm
#1
Jae-Hong Lee, Do-Hyung Kim, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: The aim of the current study was to develop a computer-assisted detection system based on a deep convolutional neural network (CNN) algorithm and to evaluate the potential usefulness and accuracy of this system for the diagnosis and prediction of periodontally compromised teeth (PCT). Methods: Combining pretrained deep CNN architecture and a self-trained network, periapical radiographic images were used to determine the optimal CNN algorithm and weights...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29767316/-ceus-diagnosis-of-solid-renal-tumors
#2
REVIEW
K Stock, H Kübler, T Maurer, J Slotta-Huspenina, K Holzapfel
CLINICAL ISSUE: Renal lesions are detected earlier, often as a result of ultrasound examinations. However, the imaging-based differential diagnosis of different tumour entities remains challenging STANDARD RADIOLOGICAL METHODS: All renal tumours >1 cm should be evaluated for malignancy by computed tomography (CT) or magnetic resonance imaging (MRI). If an angiomyolipoma diagnosis cannot be established with imaging, further diagnostics are appropriate or if malignant progression is suspected, then multidisciplinary discussion for TNM-staging based uro-oncologic therapy is usual...
May 16, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29761968/-computer-assisted-quantitative-analysis-of-contrast-enhanced-ultrasonography-in-takayasu-arteritis-carotid-artery-lesions
#3
Yanlu Hu, Qi Zhang, Chaolun Li
Takayasu arteritis (TA) is a chronic nonspecific inflammation that commonly occurs in the aorta and its main branches. Most patients with TA are lack of clinical manifestations, leading to misdiagnosis. When the TA is correctly diagnosed, the patients may already have stenosis or occlusion in the involved arteries, resulting in arterial ischemia and hypoxia symptoms, and in severe cases it will be life-threatening. Contrast-enhanced ultrasonography (CEUS) is an emerging method for assessing TA, but the assessment relies heavily on experiences of radiologists performing manual and qualitative analyses, so the diagnostic results are often not accurate...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29758455/deep-neural-networks-for-automatic-detection-of-osteoporotic-vertebral-fractures-on-ct-scans
#4
Naofumi Tomita, Yvonne Y Cheung, Saeed Hassanpour
Osteoporotic vertebral fractures (OVFs) are prevalent in older adults and are associated with substantial personal suffering and socio-economic burden. Early diagnosis and treatment of OVFs are critical to prevent further fractures and morbidity. However, OVFs are often under-diagnosed and under-reported in computed tomography (CT) exams as they can be asymptomatic at an early stage. In this paper, we present and evaluate an automatic system that can detect incidental OVFs in chest, abdomen, and pelvis CT examinations at the level of practicing radiologists...
May 8, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29750112/efficacy-and-economic-impact-evaluation-of-a-navigation-system-for-assisted-lung-biopsy
#5
Sara Giannatiempo, Giorgio Carpino, Tommasangelo Petitti, Bruno B Zobel, Rosario F Grasso, Eugenio Guglielmelli
This Letter reports on the testing and assessment of an optical computed tomography-navigation system for percutaneous lung interventional, SIRIO, showing how the lesion diameter affects the bioptic procedure. Clinical data, relating to 501 patients, were collected at the Department of Interventional Radiology of Policlinico Universitario Campus Bio-Medico. This Letter shows that the diameter of lesion affects only the procedure duration (50.91 ± 18.87 min for lesions of diameter ≤20 mm and 44.98 ± 19.43 min for lesions of diameter >20 and ≤40 mm)...
April 2018: Healthcare Technology Letters
https://www.readbyqxmd.com/read/29740749/overview-on-subjective-similarity-of-images-for-content-based-medical-image-retrieval
#6
REVIEW
Chisako Muramatsu
Computer-aided diagnosis systems for assisting the classification of various diseases have the potential to improve radiologists' diagnostic accuracy and efficiency, as reported in several studies. Conventional systems generally provide the probabilities of disease types in terms of numerical values, a method that may not be efficient for radiologists who are trained by reading a large number of images. Presentation of reference images similar to those of a new case being diagnosed can supplement the probability outputs based on computerized analysis as an intuitive guide, and it can assist radiologists in their diagnosis, reporting, and treatment planning...
May 8, 2018: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29737744/-clinical-analysis-of-adult-spontaneous-cerebrospinal-fluid-rhinorrhea
#7
Zheng Jie Zhu, Lan Cheng, Jun Yang, Qi Huang, Guo Zhen Meng, Rong Ping Cao
OBJECTIVES: To discuss the clinical characteristics, diagnosis and treatment of adult spontaneous cerebrospinal fluid rhinorrhea (CSFR). METHODS: A retrospective study was conducted on 18 patients of CSFR. Nasal secretion was collected for biochemical analysis. Imaging examination was done for identification of the bony defect in skull base. RESULTS: In all cases, the glucose concentration of nasal secretion were more than 1.7 mmol/L, and the β-2 transferrin detected by immunoelectrophoresis technique were positive...
March 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29733054/an-application-study-of-low-dose-computed-tomography-perfusion-imaging-ldctpi-in-breast-cancer-and-breast-fibroadenoma
#8
You-Gen Cheng, Zong-Qiong Sun, Hong-Xia Zhang, Guo-Qun Mao
PURPOSE: To explore the characteristics of breast cancer and breast fibroadenoma using low-dose computed tomography perfusion imaging (LDCTPI) including specific perfusion parameter values, and seek the potential clinical applications in cancer prognosis assessment. MATERIALS AND METHODS: Fifty patients including 30 diagnosed with breast cancer and 20 with breast fibroadenoma, as well as 15 control subjects with normal breasts were studied prospectively using LDCTPI examinations...
May 3, 2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29729841/cadmium-effects-on-sperm-morphology-and-semenogelin-with-relates-to-increased-ros-in-infertile-smokers-an-in-vitro-and-in-silico-approach
#9
Parameswari Ranganathan, Kamini A Rao, Jesu Jaya Sudan, Sridharan Balasundaram
Smoking releases cadmium (Cd), the metal toxicant which causes an imbalance in reactive oxygen species level in seminal plasma. This imbalance is envisaged to impair the sperm DNA morphology and thereby result in male infertility. In order to correlate this association, we performed in vitro and in silico studies and evaluated the influence of reactive oxygen species imbalance on sperm morphology impairments due to smoking. The study included 76 infertile smokers, 72 infertile non-smokers, 68 fertile smokers and 74 fertile non-smokers (control)...
May 2, 2018: Reproductive Biology
https://www.readbyqxmd.com/read/29728249/false-positive-reduction-in-computer-aided-mass-detection-using-mammographic-texture-analysis-and-classification
#10
Sami Dhahbi, Walid Barhoumi, Jaroslaw Kurek, Bartosz Swiderski, Michal Kruk, Ezzeddine Zagrouba
BACKGROUND AND OBJECTIVE: The aim of computer-aided-detection (CAD) systems for mammograms is to assist radiologists by marking region of interest (ROIs) depicting abnormalities. However, the confusing appearance of some normal tissues that visually look like masses results in a large proportion of marked ROIs with normal tissues. This paper copes with this problem and proposes a framework to reduce false positive masses detected by CAD. METHODS: To avoid the error induced by the segmentation step, we proposed a segmentation-free framework with particular attention to improve feature extraction and classification steps...
July 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29715250/pneumoperitoneum
#11
Denise R Ramponi
Pneumoperitoneum, usually seen as free air under the diaphragm, is a finding that can be seen on plain abdominal radiographs, signifying a leakage of air, usually from a perforation in the gastrointestinal tract. There are several other potential pathways from other body compartments for air to enter the abdominal cavity. Pneumoperitoneum does not always signify bowel rupture, as it can also result from pneumomediastinum and pneumothorax, and in patients who are being mechanically ventilated. Patient history and physical examination can assist in a preliminary diagnosis before diagnostic imaging...
April 2018: Advanced Emergency Nursing Journal
https://www.readbyqxmd.com/read/29715216/sports-related-concussions-in-children-differences-in-care-and-expectations-when-seen-in-an-emergency-department-versus-a-sports-medicine-clinic
#12
Kraigher Allan OʼKeefe, Bradley Beamon, Kori L Brewer, Brock Niceler
OBJECTIVES: Patient and parent expectations can potentially influence management of care. We compared expectations in the diagnosis of concussion between patients who presented to a pediatric emergency department (ED) and those who presented to a sports medicine clinic, and if there was a difference in computed tomography (CT) scans performed. METHODS: Head-injured athletes aged 8 to 18 years presenting to a pediatric ED and a sports medicine clinic were enrolled...
May 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29715174/computer-assisted-interventions-in-the-clinical-laboratory-process-improve-the-diagnosis-and-treatment-of-severe-vitamin-b12-deficiency
#13
Maria Salinas, Emilio Flores, Maite López-Garrigós, Maria Leiva-Salinas, Alberto Asencio, Javier Lugo, Carlos Leiva-Salinas
BACKGROUND: Severe vitamin B12 deficiency can result in serious complications if undiagnosed or untreated. Our aim was to test the efficacy of interventions in the laboratory process to improve the detection and the treatment of severe vitamin B12 deficiency. METHODS: Quasi-experimental investigation with a retrospective 7-year pre-intervention period and 29-month post-intervention follow-up in a university hospital. Two interventions were designed to improve the detection and treatment of subjects with vitamin B12 deficiency: the laboratory information system (LIS) automatically added seru vitamin B12 (s-vitamin B12) based on certain conditions; and created a comment in the report and scheduled an appointment with the general practitioner (GP)...
May 1, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29714698/foreign-bodies-in-the-interior-of-the-maxillary-sinus-diagnosis-by-cone-beam-computed-tomography
#14
Eliana Dantas da Costa, Priscila Dias Peyneau, Francielle Silvestre Verner, Solange Maria de Almeida, Glaucia Maria Bovi Ambrosano
To avoid complications, the intimate relation between the maxillary sinus and dental roots deserves attention during surgical procedures. Accidental introduction of foreign bodies, such as dental implants, may irritate the maxillary sinus mucosa, causing sinusitis. Cone beam computed tomography (CBCT) has been proven to be suitable for diagnosis in these cases by providing the exact location of the foreign body. The present article reports 3 cases of foreign bodies inside the maxillary sinus associated with inflammatory processes...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29709959/a-case-of-pulmonary-actinomyces-graevenitzii-infection-diagnosed-by-bronchoscopy-using-endobronchial-ultrasonography-with-a-guide-sheath
#15
Daisuke Himeji, Sachika Hara, Takeshi Kawaguchi, Gen-Ichi Tanaka
A 75-year-old man visited our hospital complaining of a low-grade fever, dry cough, and chest abnormal shadow. Chest computed tomography revealed a nodule with a cavity in the right upper lobe. Endobronchial ultrasonography (EBUS) of the lesion suggested that the lesion was benign. Actinomyces graevenitzii was cultured from the specimen obtained by bronchoscopy using endobronchial ultrasonography with a guide sheath technique and was identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and 16S rRNA sequencing...
April 27, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29705812/imaging-assisted-diagnosis-and-characteristics-of-suspected-spinal-brucellosis-a-retrospective-study-of-72-cases
#16
Laiyong Tu, Xinmei Liu, Wenfei Gu, Zhenbin Wang, Enfeng Zhang, Aikenmu Kahar, Ge Chu, Jiang Zhao
BACKGROUND We clarified the imaging features of Brucella spondylitis to enhance our understanding of the disease and to minimize misdiagnosis. MATERIAL AND METHODS Imaging data (X-ray, computed tomography [CT], and magnetic resonance imaging [MRI] data) of 72 Brucella spondylitis patients treated from 2010 to 2017 were retrospectively analyzed; diagnoses was made by evaluating laboratory and pathological data. RESULTS X-ray films revealed changes in intervertebral space heights, the number of lateral osteophytes, and bone destruction, which were more severe in the following order: lumbosacral vertebrae (56 cases, 77...
April 29, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29701414/hilar-renal-artery-aneurysm-ex-vivo-reconstruction-and-autotransplantation
#17
Pedro Pinto Sousa, Carlos Veiga, Arlindo Matos, Pedro Sá Pinto, Rui Almeida
INTRODUCTION: Renal artery aneurysm (RAA) is a rare clinical entity with an estimated prevalence of 0.15% to 0.1%in the general population. The majority of patients present asymptomatically and the diagnosis is made incidentally during a hypertension study test, and more rarely, fortuitously after backache. Indications to treat have been subject of intense debate, nevertheless there seems to be some consensus that RAAs greater than 2 cm in diameter, expanding RAA, with thrombus or in pregnant women should be treated...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29701344/median-arcuate-ligament-syndrome-literature-review-and-case-report
#18
Nelson Camacho, Gonçalo Alves, Frederico Bastos Gonçalves, Rodolfo Abreu, Rita Ferreira, Joana Catarino, Ricardo Correia, Rita Bento, Maria Emília Ferreira
INTRODUCTION: Median arcuate ligament syndrome (MALS) or Dunbar syndrome is a rare clinical entity characterized by celiac trunk compression by median arcuate ligament and variable gastrointestinal symptoms (postprandial epigastric pain, nausea, weight loss, anorexia and diarrhea). However, some degree of radiographic compression is observed in 10%-24% of asymptomatic patients. Besides the extrinsic vascular compression, MALS has a multifactorial etiology and it has been suggested as a neurogenic disease resulting in altered sensation and pain from the somatic nerves in the splanchnic plexus...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29700783/modeling-right-ventricle-failure-after-continuous-flow-left-ventricular-assist-device-a-biventricular-finite-element-and-lumped-parameter-analysis
#19
Francesco Scardulla, Valentina Agnese, Giuseppe Romano, Gabriele Di Gesaro, Sergio Sciacca, Diego Bellavia, Francesco Clemenza, Michele Pilato, Salvatore Pasta
The risk of right ventricle (RV) failure remains a major contraindication for continuous-flow left ventricular assist device (CF-LVAD) implantation in patients with heart failure. It is therefore critical to identify the patients who will benefit from early intervention to avoid adverse outcomes. We sought to advance the computational modeling description of the mechanisms underlying RV failure in LVAD-supported patients. RV failure was studied by computational modeling of hemodynamic and cardiac mechanics using lumped-parameter and biventricular finite element (FE) analysis...
April 26, 2018: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29691111/helping-patients-help-themselves-supporting-the-healthcare-journey
#20
Moriah E Ellen, Ruth Shach, Ran D Balicer
Patients often feel lost when navigating the health care system, and poor care coordination leads to negative patient outcomes, consumes resources and makes diseases more difficult to treat. Patients and citizens have become eager to take health care decision making into their own hands. To this end, solutions have been proposed which assist patients by providing them with more information and enabling them to take a more active role in their care. These include enlisting a patient navigator, consumer engagement, process mapping, decision aids, and clinical pathways...
April 14, 2018: Patient Education and Counseling
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