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https://www.readbyqxmd.com/read/28920094/convolutional-auto-encoder-for-image-denoising-of-ultra-low-dose-ct
#1
Mizuho Nishio, Chihiro Nagashima, Saori Hirabayashi, Akinori Ohnishi, Kaori Sasaki, Tomoyuki Sagawa, Masayuki Hamada, Tatsuo Yamashita
OBJECTIVES: The purpose of this study was to validate a patch-based image denoising method for ultra-low-dose CT images. Neural network with convolutional auto-encoder and pairs of standard-dose CT and ultra-low-dose CT image patches were used for image denoising. The performance of the proposed method was measured by using a chest phantom. MATERIALS AND METHODS: Standard-dose and ultra-low-dose CT images of the chest phantom were acquired. The tube currents for standard-dose and ultra-low-dose CT were 300 and 10 mA, respectively...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28917584/pneumatoceles-in-pediatric-blunt-trauma-common-and-benign
#2
Lindsey B Armstrong, David P Mooney
INTRODUCTION: Traumatic pneumatoceles are reported to be rare in children and to have an uncertain clinical significance. We report a single institution series of traumatic pneumatoceles to better define their frequency and clinical significance. METHODS: After obtaining approval from the IRB, data were extracted from the trauma registry of a level 1 pediatric trauma center on children diagnosed with a pulmonary contusion (International Classification of Diseases-9th edition diagnosis codes: 861...
August 7, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28914845/-allergic-bronchopulmonary-aspergillosis-in-patients-with-asthma-results-of-a-prospective-study
#3
Ya I Kozlova, E V Frolova, L V Filippova, A E Uchevatkina, O V Aak, N N Klimko
AIM: To estimate the frequency of fungal sensitization and the incidence of allergic bronchopulmonary aspergillosis (ABPA) in asthmatic patients. SUBJECTS AND METHODS: A total of 140 asthmatic patients were examined. They underwent allergologic (skin tests for fungal allergens, estimation of total and fungal allergen-specific IgE levels) and mycological (microscopy and inoculation of respiratory biosubstrates) examinations. Chest computed tomography, when indicated, was done...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28914826/pulmonary-alveolar-proteinosis-a-case-report
#4
Luis Alberto Concepción-Urteaga, Luis Alejandro Rodríguez-Hidalgo, Jorge Luis Cornejo-Portella, Oscar Neri Alquizar-Horna, Daniel Anderson Aguilar-Villanueva, Marcio José Concepción-Zavaleta, Mario Gustavo Azañero-Luján
INTRODUCTION: Pulmonary alveolar proteinosis is a rare, diffuse interstitial lung disease, characterized by alveolar obstruction due to the accumulation of pulmonary surfactant. CLINICAL PRESENTATION: A 30-year-old male with progressively worsening dyspnea and non-productive cough for one year. He was a sugar cane plantation worker and had prior recurrent respiratory infections. Physical exam revealed cyanosis, and bilateral coarse and fine rales. Chest computed tomography showed diffuse crazy paving pattern...
September 14, 2017: Medwave
https://www.readbyqxmd.com/read/28914745/is-digital-tomosynthesis-on-par-with-computed-tomography-for-the-detection-and-measurement-of-pulmonary-nodules
#5
Xiang Wen Lee, Henry M Marshall, Steven C Leong, Rachael L O'Rourke, Karin Steinke, Negar Mirjalili, Rayleen V Bowman, Ian A Yang, Kwun M Fong
Chest digital tomosynthesis (DT) has potential advantages compared to computed tomography (CT) such as radiation dose reduction. However, the role of DT in pulmonary nodule management remains investigative. We compared DT against CT for pulmonary nodule detection and size measurement. A clinical population comprising 54 nodules from 30 patients and a screening population comprising 42 nodules from 52 patients were included. Scans were independently read by two radiologists. Agreement in nodule measurements between readers and between modalities was assessed by Bland-Altman analysis using a 95% level of significance...
September 13, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28913162/endobronchial-hamartoma-a-rare-structural-cause-of-chronic-cough
#6
Saman Ahmed, Ayesha Arshad, M Jeffery Mador
Pulmonary hamartomas are rare benign tumors consisting of multiple mesenchymal cell lines like cartilage, bone and fat. We discuss an interesting case of a 53-year-old male patient, who was referred to our clinic for persistent cough. Chest X-ray revealed a left suprahilar density associated with plate like atelectasis, which on chest CT was found to be a densely calcified nodule, causing narrowing of the left upper lobe (LUL) bronchus with calcified bilateral hilar lymph nodes. A bronchoscopy revealed a smooth endobronchial mass with calcification, which was removed...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28913161/a-young-immunocompetent-patient-with-spontaneous-aspergillus-empyema-who-developed-severe-eosinophilia
#7
Fumiaki Kudo, Hiromitsu Ohta, Yoshiaki Nagai, Kentaro Minegishi, Shinichiro Koyama
Aspergillus empyema is usually reported as a complication of surgical procedures, and spontaneous cases are quite rare. Here, we describe the case of a 16-year-old man who suddenly developed dyspnea despite previously being healthy. Chest computed tomography showed multiple mass-containing cavity lesions, pneumothorax, and pleural effusion in the left thorax. Within 2 weeks, Aspergillus fumigatus grew from his pleural effusion, thus he was diagnosed with Aspergillus empyema. He also developed severe eosinophilia after admission, and was treated with anti-fungal drugs...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28913160/pancoast-tumor-approach-through-oesophagus
#8
Eritjan Tashi, Perlat Kapisyzi, Daniela Xhemalaj, Alma Andoni, Ilir Peposhi
Patient with Pancoast Tumor usually present in advanced stage of the disease which requires chemotherapy and radiotherapy as options of treatment. Histologic confirmation is a key for further treatment of these patients. Normally in bronchoscopy the lesion can't be visualised and in result making biopsy difficult to perform. Transthoracic biopsy through computed tomography poses anatomic difficulties and not always the pulmonary lesion can be reached. We report a case of pancoast tumor in a 68 year old male who presented with left arm pain and upper lobe increased density mass in chest x ray...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28913157/non-functioning-gastroenteropancreatic-gep-tumors-a-111-in-pentetreotide-spect-ct-diagnostic-study
#9
Angela Spanu, Orazio Schillaci, Bastiana Piras, Diego F Calvisi, Antonio Falchi, Roberta Danieli, Susanna Nuvoli, Franca Dore, Giuseppe Madeddu
In a retrospective study performed in non-functioning GEP tumor patients we further investigated (111)In-Pentetreotide SPECT/CT usefulness in diagnosis, staging and follow-up also evaluating whether the procedure may give more information than conventional imaging procedures (CIP), such as CT, MRI, US. We enrolled 104 consecutive patients with non-functioning GEP tumors, 30 in initial diagnosis and staging phases (IDS) and 74 in follow-up (FU). All patients underwent somatostatin receptor scintigraphy (SRS) whole body scan at 4, 24 and, if necessary, 48 hours followed by abdominal and chest SPECT/CT after (111)In-Pentetreotide 148-222 MBq i...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28912997/laparoscopic-repair-of-diaphragmatic-rupture-a-case-report-with-radiological-and-surgical-correlation
#10
Patrick Nguyen, Bonnie Davis, Daniel D Tran
The leading cause of diaphragmatic rupture is penetrating abdominal trauma, including gunshot- and stab-related wounds; however, diaphragmatic rupture can also result from blunt trauma to the abdomen. The diagnosis can be difficult to make as the physical examination may be unremarkable, and imaging, that is, a conventional chest X-ray and/or CT imaging, may initially fail to reveal the injury. Failure to recognize diaphragmatic rupture can result in a delayed presentation, sometimes years later, with a potential catastrophic outcome...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28912822/a-rare-case-of-cavitary-lesion-of-the-lung-caused-by-mycoplasma-pneumoniae-in-an-immunocompetent-patient
#11
Muhammad Kashif, Rizwan Ahmed Dudekula, Misbahuddin Khaja
Mycoplasma pneumoniae is an atypical bacterium that most commonly causes upper respiratory tract infections, but it can also cause pneumonia, referred to as "walking pneumonia." Although cavitary lesions are present in a wide variety of infectious and noninfectious processes, those attributable to M. pneumoniae are extremely uncommon; thus, to date, epidemiological studies are lacking. Here, we present a rare case of a 20-year-old male, referred to us from a psychiatric facility for evaluation of a cough, who was found to have a cavitary lesion in the right upper lobe...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28912730/diagnosis-of-swimming-induced-pulmonary-edema-a-review
#12
REVIEW
Hannes Grünig, Pantelis T Nikolaidis, Richard E Moon, Beat Knechtle
Swimming induced pulmonary edema (SIPE) is a complication that can occur during exercise with the possibility of misdiagnosis and can quickly become life threatening; however, medical literature infrequently describes SIPE. Therefore, the aim of this review was to analyse all individual cases diagnosed with SIPE as reported in scientific sources, with an emphasis on the diagnostic pathways and the key facts resulting in its diagnosis. Due to a multifactorial and complicated pathophysiology, the diagnosis could be difficult...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912261/preoperative-pectoralis-muscle-quantity-and-attenuation-by-computed-tomography-are-novel-and-powerful-predictors-of-mortality-after-left-ventricular-assist-device-implantation
#13
Levi M Teigen, Ranjit John, Adam J Kuchnia, Emily M Nagel, Carrie P Earthman, Jessica Kealhofer, Cindy Martin, Rebecca Cogswell
BACKGROUND: Skeletal muscle mass decreases in end-stage heart failure and is predictive of clinical outcomes in several disease states. Skeletal muscle attenuation and quantity as quantified on preoperative chest computed tomographic scans may be predictive of mortality after continuous flow (CF) left ventricular assist device (LVAD) implantation. METHODS AND RESULTS: A single-center continuous flow-LVAD database (n=354) was used to identify patients with chest computed tomographies performed in the 3 months before LVAD implantation (n=143)...
September 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28911363/bronchial-angles-are-associated-with-nodular-bronchiectatic-non-tuberculous-mycobacteria-lung-disease
#14
T Lee, J Y Park, H Y Lee, H-J Lim, J S Park, Y-J Cho, T J Kim, K W Lee, J H Lee, C-T Lee, H I Yoon
BACKGROUND: The nodular bronchiectatic (NB) form of non-tuberculous mycobacteria (NTM) lung disease usually involves the right middle lobe (RML) and the left upper lobe lingular segment. However, the reason underlying this preference is not known. METHODS: Fifty patients with NB NTM lung disease who had both positive NTM culture(s) and NB lesions in the RML or lingular segment on computed tomography (CT) of the chest, and 100 healthy subjects matched for sex, age, height and body weight with normal chest CT, were randomly selected...
October 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28910916/-primary-tracheal-malignant-glomus-tumor-with-lung-metastasis-diagnosed-by-pathological-analysis-a-case-report-and-literature-review
#15
B Huang, F G Chen, J Zhuang, W C Zheng, W Y Zhu, Q C Zhang, S H Wang, C M Guo, C M Xie
Objective: To study the clinical manifestations, pathological features, diagnosis, differential diagnosis, treatment and prognosis of primary tracheobronchial or pulmonary malignant glomus tumor (MGT). Methods: A case of primary tracheal MGT with lung metastasis diagnosed by pathological analysis admitted to Affiliated Shantou Hospital of Sun Yat-sen University in May. 2015 was analyzed, and the related literatures were reviewed. We searched databases including PubMed, Embase, Ovid, Cochrane, Wanfang and Chinese National Knowledge infrastructure (CNKI), using the keyword "tracheal or bronchial or pulmonary malignant glomus tumor" from Jan...
September 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28910816/mediastinal-and-subcutaneous-chest-fat-are-differentially-associated-with-emphysema-progression-and-clinical-outcomes-in-smokers
#16
Jon Grace, Joseph K Leader, Seyed M Nouraie, Jiantao Pu, Divay Chandra, Yingze Zhang, Frank C Sciurba, Jessica Bon
BACKGROUND: Studies have demonstrated both positive and negative effects of obesity on clinical outcomes in chronic obstructive pulmonary disease (COPD). In other chronic diseases, fat location is differentially associated with disease outcomes; however, this relationship has not been well studied in COPD. OBJECTIVE: To determine if fat location explains the differential association of body mass index (BMI) with clinical outcome measures in smokers. METHODS: Baseline and 6-year chest computed tomography scans from 68 current and former smokers were used to quantify mediastinal and subcutaneous fat...
September 15, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28910264/estimation-and-comparison-of-the-radiation-effective-dose-during-coronary-computed-tomography-angiography-examinations-on-single-source-64-mdct-and-dual-source-128-mdct
#17
Daryoush Khoramian, Soroush Sistani
GOAL: To estimate and compare the radiation dose associated with coronary computed tomography angiography (CCTA) examinations on two multi-detector CT scanners (MDCT), 64-MDCT and 128-MDCT, in daily practice. METHODS: Scan parameters of 90 patients undergoing retrospective electrocardiographic gating spiral CCTA exam were recorded during a period on a single-source 64-MDCT and a dual-source 128-MDCT, and average scan parameters were derived that were used for dosimetry...
September 14, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28905804/large-pancreatic-pseudocyst-penetrating-into-posterior-mediastinum
#18
Adam Roman Markowski, Elżbieta Brodalka, Katarzyna Guzinska-Ustymowicz, Konrad Zaręba, Dariusz Cepowicz, Bogusław Kędra
We report a rare case of a large mediastinal pancreatic pseudocyst compressing the left atrium and the esophagus and causing dyspnea, palpitations, and emesis. Chest radiograph was non-diagnostic, esophagogastroduodenoscopy showed diffuse extrinsic compression of the distal esophagus and gastric corpus, but a definitive diagnosis was confirmed by computed tomography. We decided to perform surgery due to the recurrence of the pancreatic pseudocyst, a history of unsuccessful radiologically guided external drainage a few years earlier, and a very large diameter of the pseudocyst causing acute cardio-pulmonary distress syndrome...
August 31, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28905535/are-there-any-additional-benefits-to-performing-positron-emission-tomography-computed-tomography-scans-and-brain-magnetic-resonance-imaging-on-patients-with-ground-glass-nodules-prior-to-surgery
#19
Jae Uk Song, Junwhi Song, Kyung Jong Lee, Hojoong Kim, O Jung Kwon, Joon Young Choi, Jhingook Kim, Joungho Han, Sang Won Um
BACKGROUND: A ground-glass nodule (GGN) represents early-stage lung adenocarcinoma. However, there is still no consensus for preoperative staging of GGNs. Therefore, we evaluated the need for the routine use of positron emission tomography/computed tomography (PET)/computed tomography (CT) scans and brain magnetic resonance imaging (MRI) during staging. METHODS: A retrospective analysis was undertaken in 72 patients with 74 GGNs of less than 3 cm in diameter, which were confirmed via surgery as malignancy, at the Samsung Medical Center between May 2010 and December 2011...
September 1, 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28905390/validation-of-the-gatortail-method-for-accurate-sizing-of-pulmonary-vessels-from-3d-medical-images
#20
Walter G O'Dell, Anne K Gormaley, David A Prida
PURPOSE: Detailed characterization of changes in vessel size is crucial for the diagnosis and management of a variety of vascular diseases. Because clinical measurement of vessel size is typically dependent on the radiologist's subjective interpretation of the vessel borders, it is often prone to high inter- and intra-user variability. Automatic methods of vessel sizing have been developed for two-dimensional images but a fully three-dimensional (3D) method suitable for vessel sizing from volumetric X-ray computed tomography (CT) or magnetic resonance imaging has heretofore not been demonstrated and validated robustly...
September 14, 2017: Medical Physics
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