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https://www.readbyqxmd.com/read/28108817/computerized-classification-of-pneumoconiosis-on-digital-chest-radiography-artificial-neural-network-with-three-stages
#1
Eiichiro Okumura, Ikuo Kawashita, Takayuki Ishida
It is difficult for radiologists to classify pneumoconiosis from category 0 to category 3 on chest radiographs. Therefore, we have developed a computer-aided diagnosis (CAD) system based on a three-stage artificial neural network (ANN) method for classification based on four texture features. The image database consists of 36 chest radiographs classified as category 0 to category 3. Regions of interest (ROIs) with a matrix size of 32 × 32 were selected from chest radiographs. We obtained a gray-level histogram, histogram of gray-level difference, gray-level run-length matrix (GLRLM) feature image, and gray-level co-occurrence matrix (GLCOM) feature image in each ROI...
January 20, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28107565/idermatopath-a-novel-software-tool-for-mitosis-detection-in-h-e-stained-tissue-sections-of-malignant-melanoma
#2
C Andres, B Andres-Belloni, R Hein, T Biedermann, A Schäpe, N Brieu, R Schönmeyer, M Yigitsoy, J Ring, G Schmidt, N Harder
BACKGROUND: Malignant Melanoma (MM) is characterized by a growing incidence and a high malignant potential. Beside well defined prognostic factors such as tumor thickness and ulceration, the Mitotic Rate (MR) was included in the AJCC recommendations for diagnosis and treatment of MM. In daily routine, the identification of a single mitosis can be difficult on Hematoxylin&Eosin slides alone. Several studies showed a big inter- and intra-individual variability in detecting the MR in MM even by very experienced investigators, thus raising the question for a computer assisted method...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28106747/design-of-wearable-breathing-sound-monitoring-system-for-real-time-wheeze-detection
#3
Shih-Hong Li, Bor-Shing Lin, Chen-Han Tsai, Cheng-Ta Yang, Bor-Shyh Lin
In the clinic, the wheezing sound is usually considered as an indicator symptom to reflect the degree of airway obstruction. The auscultation approach is the most common way to diagnose wheezing sounds, but it subjectively depends on the experience of the physician. Several previous studies attempted to extract the features of breathing sounds to detect wheezing sounds automatically. However, there is still a lack of suitable monitoring systems for real-time wheeze detection in daily life. In this study, a wearable and wireless breathing sound monitoring system for real-time wheeze detection was proposed...
January 17, 2017: Sensors
https://www.readbyqxmd.com/read/28105347/pulmonary-intravascular-large-b-cell-lymphoma-successfully-treated-with-rituximab-cyclophosphamide-vincristine-doxorubicin-and-prednisolone-immunochemotherapy-report-of-a-patient-surviving-for-over-1-year
#4
Shizuka Nishii-Ito, Hiroki Izumi, Hirokazu Touge, Kenichi Takeda, Yuzuru Hosoda, Akira Yamasaki, Satoshi Kuwamoto, Eiji Shimizu, Toru Motokura
A 73-year-old man with a history of lethargy, fever and dyspnea was admitted to Tottori University Hospital. A computed tomography (CT) scan revealed splenomegaly and diffusely spreading ground-glass opacities (GGOs) in both lungs. A video-assisted thoracoscopic surgery (VATS)-guided lung biopsy revealed intravascular proliferation of large atypical lymphoid cells in the arteries, veins and alveolar walls. The patient was diagnosed with intravascular large B-cell lymphoma (IVLBCL); he received 6 cycles of rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone (R-CHOP) immunochemotherapy and has remained in complete remission for >1 year...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28105116/computer-assisted-quantitative-evaluation-of-bisphosphonate-treatment-for-paget-s-disease-of-bone-using-the-bone-scan-index
#5
Satoshi Nagano, Shunsuke Nakamura, Hirofumi Shimada, Masahiro Yokouchi, Takao Setoguchi, Yasuhiro Ishidou, Hiromi Sasaki, Setsuro Komiya
The purpose of the present study was to analyze the effect of treatment of Paget's disease of bone (PDB) with bone scintigraphy using a computer-assisted diagnosis system (BONENAVI) that quantitatively evaluates bone metabolism. Seven patients with PDB (three male, four female; average age, 60 years; age range, 33-80 years) underwent bone scintigraphy and measurement of serum alkaline phosphatase (ALP), bone-specific ALP (BAP), serum cross-linked N-telopeptide (NTx) of type I collagen, urinary NTx, and deoxypyridinoline (DPD) before and after bisphosphonate treatment...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28088844/role-of-contrast-ct-for-the-diagnosis-and-the-prognosis-of-suspected-lvad-thrombosis
#6
Bill C Tran, Prabhjot S Nijjar
BACKGROUND: There is an urgent need for further studies evaluating the role of imaging modalities in the management of left ventricular assist device (LVAD) thrombosis. This study reviews the role of computed tomography (CT) in the diagnosis of suspected LVAD thrombosis. METHODS: All contrast chest CTs performed in patients with suspected LVAD thrombosis at the University of Minnesota between January 2008 and April 2014 were reviewed. Significant CT findings were identified, operative notes were reviewed, and patient outcomes were reported...
January 15, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28081314/cryptogenic-organizing-pneumonia-clinical-and-radiological-features-treatment-outcomes-of-17-patients-and-review-of-the-literature
#7
Elif Yelda Niksarlıoğlu, Gülcihan Zehra Özkan, Nur Dilek Bakan, Sibel Yurt, Lütfiye Kılıç, Güngör Çamsarı
BACKGROUND/AIM: We evaluated patients with cryptogenic organizing pneumonia (COP) who attended our clinic. MATERIALS AND METHODS: We retrospectively investigated the clinical and radiological findings, diagnostic methods, treatment, and follow-up outcomes of 17 patients who had been histopathologically diagnosed with COP. RESULTS: The mean age of the patients was 49.8 ± 10.4 years. The most common symptom was cough (n = 15; 88.2%) and the most common radiological finding (n = 10) was consolidation in the inferior lobes on thoracic computed tomography...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28070776/computer-assisted-delineation-of-cerebral-infarct-from-diffusion-weighted-mri-using-gaussian-mixture-model
#8
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/28069288/diagnostic-imaging-of-the-hepatobiliary-system-an-update
#9
REVIEW
Angela J Marolf
Recent advances in diagnostic imaging of the hepatobiliary system include MRI, computed tomography (CT), contrast-enhanced ultrasound, and ultrasound elastography. With the advent of multislice CT scanners, sedated examinations in veterinary patients are feasible, increasing the utility of this imaging modality. CT and MRI provide additional information for dogs and cats with hepatobiliary diseases due to lack of superimposition of structures, operator dependence, and through intravenous contrast administration...
January 6, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28067149/navigation-assisted-trans-inferotemporal-cortex-selective-amygdalohippocampectomy-for-mesial-temporal-lobe-epilepsy-preserving-the-temporal-stem
#10
Haruhiko Kishima, Amami Kato, Satoru Oshino, Naoki Tani, Tomoyuki Maruo, Hui Ming Khoo, Takufumi Yanagisawa, Kotaro Edakawa, Maki Kobayashi, Masataka Tanaka, Koichi Hosomi, Masayuki Hirata, Toshiki Yoshimine
OBJECTIVE: Selective amygdalohippocampectomy (SAH) can be used to obtain satisfactory seizure control in patients with mesial temporal lobe epilepsy (MTLE). Several SAH procedures have been reported to achieve satisfactory outcomes for seizure control, but none yield fully satisfactory outcomes for memory function. We hypothesized that preserving the temporal stem might play an important role. To preserve the temporal stem, we developed a minimally invasive surgical procedure, 'neuronavigation-assisted trans-inferotemporal cortex SAH' (TITC-SAH)...
January 9, 2017: Neurological Research
https://www.readbyqxmd.com/read/28059446/elimination-of-pain-improves-specificity-of-clinical-diagnostic-criteria-for-adult-chronic-rhinosinusitis
#11
Scott D Hirsch, Evan R Reiter, Laurence J DiNardo, Wen Wan, Theodore A Schuman
OBJECTIVE: Determine whether the elimination of pain improves accuracy of clinical diagnostic criteria for adult chronic rhinosinusitis. STUDY DESIGN: Retrospective cohort study. METHODS: History, symptoms, nasal endoscopy, and computed tomography (CT) results were analyzed for 1,186 adults referred to an academic otolaryngology clinic with presumptive diagnosis of chronic rhinosinusitis. Clinical diagnosis was rendered using the 1997 Rhinosinusitis Taskforce (RSTF) Guidelines and a modified version eliminating facial pain, ear pain, dental pain, and headache...
January 6, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28048644/tu-h-campus-iep3-05-computer-aided-diagnosis-employing-automatically-segmented-color-specific-regions-in-ultrasound-shear-wave-elastography-for-the-assessment-of-chronic-liver-disease
#12
I Gatos, S Tsantis, G C Kagadis
PURPOSE: To assess the role of an automated Computer Aided Diagnosis (CAD) system in differentiation of Healthy Subjects to Chronic Liver Disease (CLD) Patients in terms of liver fibrosis (F0-F4), using Ultrasound Shear Wave Elastography (SWE). METHODS: Clinical Dataset consisted of 125 subjects, 55 Healthy (F0) whom condition was validated with Normal Biochemical Markers and clear Clinical History, and 70 with CLD (F1-F4) whom condition was validated with Liver Biopsy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048615/tu-h-202-04-the-vampire-challenge-preliminary-results-from-a-multi-institutional-study-of-ct-ventilation-image-accuracy
#13
J Kipritidis
: CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048557/tu-h-202-00-ct-ventilation-imaging-the-new-clinical-reality-of-functional-avoidance-and-response-assessment-in-lung-cancer-radiation-therapy
#14
Paul Keall
: CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047895/tu-h-202-01-introduction-to-ct-ventilation-imaging-principles-validation-and-clinical-translation
#15
T Yamamoto
: CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047233/tu-h-202-02-applications-validation-clinical-endpoints-and-opportunities-for-ct-ventilation
#16
Y Vinogradskiy
: CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046563/tu-h-202-03-spatial-distributions-of-radiation-induced-pulmonary-changes-can-be-modeled-and-utilized-for-image-guided-planning-and-therapy-to-improve-pulmonary-function-preservation-and-hence-the-therapeutic-ratio-for-lung-cancer
#17
J Bayouth
: CT ventilation imaging is an exciting functional imaging modality that combines four-dimensional computed tomography (4DCT) and deformable image registration (DIR) to provide exquisite ventilation maps of the lung. CT ventilation imaging can be used for: (1) Functional avoidance in thoracic radiation therapy, (2) Imaging longitudinal changes in regional lung function for treatment assessment and adaptation, (3) Image-assisted diagnosis of non-oncologic respiratory diseases. CT ventilation imaging uses CT, a predominantly anatomic imaging modality, and through imaging processing creates functional images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28035657/a-computer-aided-diagnostic-system-for-detecting-diabetic-retinopathy-in-optical-coherence-tomography-images
#18
Ahmed ElTanboly, Marwa Ismail, Ahmed Shalaby, Andy Switala, Ayman El-Bazy, Shlomit Schaal, Georgy Gimel'farb, Magdi El-Azab
PURPOSE: Detection (diagnosis) of diabetic retinopathy (DR) in optical coherence tomography (OCT) images for patients with type 2 diabetes, but almost clinically normal retina appearances. METHODS: The proposed computer-aided diagnostic (CAD) system detects the DR in three steps: (i) localizing and segmenting 12 distinct retinal layers on the OCT image; (ii) deriving features of the segmented layers, and (iii) learning most discriminative features and classifying each subject as normal or diabetic...
December 30, 2016: Medical Physics
https://www.readbyqxmd.com/read/28032305/an-assisted-diagnosis-system-for-detection-of-early-pulmonary-nodule-in-computed-tomography-images
#19
Ji-Kui Liu, Hong-Yang Jiang, Meng-di Gao, Chen-Guang He, Yu Wang, Pu Wang, He Ma, Ye Li
Lung cancer is still the most concerned disease around the world. Lung nodule generates in the pulmonary parenchyma which indicates the latent risk of lung cancer. Computer-aided pulmonary nodules detection system is necessary, which can reduce diagnosis time and decrease mortality of patients. In this study, we have proposed a new computer aided diagnosis (CAD) system for detection of early pulmonary nodule, which can help radiologists quickly locate suspected nodules and make judgments. This system consists of four main sections: pulmonary parenchyma segmentation, nodule candidate detection, features extraction (total 22 features) and nodule classification...
February 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28031839/a-massive-pleural-based-desmoid-tumour
#20
Talha Mahmud, Guness Mal, Farhan Ahmed Majeed, Siaw Ming Chai, Y C Gary Lee
A 49-year-old Pakistani male presented with "heaviness" in his chest. Chest radiograph and computed tomography (CT) confirmed a massive left-sided pleural-based opacity. Three years ago, he was investigated for a left-sided lymphocytic, exudative pleural effusion following an episode of dengue fever. Tube thoracostomy removed 1.3 L of fluid. Pleural biopsy and bronchial washings were non-contributory. He received empirical anti-tuberculosis treatment and remained asymptomatic until this presentation. To investigate the new pleural mass, he underwent a video-assisted thoracoscopic surgery, which revealed a 2...
January 2017: Respirology Case Reports
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