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https://www.readbyqxmd.com/read/28749127/fuzzy-c-means-clustering-based-segmentation-and-cnn-classification-for-accurate-segmentation-of-lung-nodules
#1
Jalal Deen K, Ganesan R, Merline A
Objective: Accurate segmentation of abnormal and healthy lungs is very crucial for a steadfast computer-aided disease diagnostics. Methods: For this purpose a stack of chest CT scans are processed. In this paper, novel methods are proposed for segmentation of the multimodal grayscale lung CT scan. In the conventional methods using Markov–Gibbs Random Field (MGRF) model the required regions of interest (ROI) are identified. Result: The results of proposed FCM and CNN based process are compared with the results obtained from the conventional method using MGRF model...
July 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28748423/impact-of-interstitial-lung-disease-on-mortality-of-patients-with-rheumatoid-arthritis
#2
Dam Kim, Soo-Kyung Cho, Chan-Bum Choi, Jung-Yoon Choe, Won Tae Chung, Seung-Jae Hong, Jae-Bum Jun, Young Ok Jung, Tae-Hwan Kim, Tae-Jong Kim, Hye-Soon Lee, Joo-Hyun Lee, Jisoo Lee, Shin-Seok Lee, Dae-Hyun Yoo, Bo Young Yoon, Jin Woo Song, Sang-Cheol Bae, Yoon-Kyoung Sung
To identify the prevalence of interstitial lung disease (ILD) in Korean patients with rheumatoid arthritis (RA) and assess its effect on mortality. A total of 3555 patients with RA, with chest X-ray or chest computed tomography (CT) data at enrollment were extracted from the KORean Observational study Network for Arthritis cohort, a nationwide prospective cohort for patients with RA in Korea. The patients were classified into two groups: (1) an ILD group by chest X-ray or chest CT scan, and (2) a non-ILD group by these modalities...
July 26, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28747182/recurrent-primary-mediastinal-giant-cell-tumor-of-soft-tissue-with-radiological-findings-a-rare-case-report-and-literature-review
#3
Qiongjie Hu, Jian Peng, Liming Xia
BACKGROUND: Giant cell tumor of soft tissue (GCT-ST), which histologically resembles GCT of bone, is a rare tumor. Usually, it is located in the lower extremities and trunk. GCT-ST, occurring in mediastinum, is extremely rare. CASE PRESENTATION: We encountered an 18-year-old Chinese woman who had mild dull pain on the left side of back. The following chest computed tomography (CT) showed a heterogeneous mass deeply situated in the posterior mediastinum with compression of the lung and invasion of the adjacent rib...
July 26, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28746529/ultrasound-guided-intrapleural-positioning-of-pleural-catheters-influence-on-immediate-lung-expansion-and-pleurodesis-in-patients-with-recurrent-malignant-pleural-effusion
#4
Pedro Henrique Xavier Nabuco de Araujo, Ricardo Mingarini Terra, Thiago da Silva Santos, Rodrigo Caruso Chate, Antonio Fernando Lins de Paiva, Paulo Manuel Pêgo-Fernandes
Objective: To evaluate the role of intrapleural positioning of a pleural catheter in early lung expansion and pleurodesis success in patients with recurrent malignant pleural effusion (RMPE). Methods: This was a retrospective study nested into a larger prospective cohort study including patients with RMPE recruited from a tertiary university teaching hospital between June of 2009 and September of 2014. The patients underwent pleural catheter insertion followed by bedside pleurodesis...
May 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28746180/a-consort-compliant-prospective-randomized-controlled-trial-radiation-dose-reducing-in-computed-tomography-using-an-additional-lateral-scout-view-combined-with-automatic-tube-current-modulation-phantom-and-patient-study
#5
Wanlin Peng, Zhenlin Li, Chunchao Xia, Yingkun Guo, Jinge Zhang, Kai Zhang, Lei Li, Fei Zhao
BACKGROUND: Radiation exposure has been a hot point in research field of computed tomography (CT). Recently, automated tube current modulation (ATCM) has emerged as an important technique to reduce radiation exposure. Many studies have shown that the difference in scout view would affect modulation. This prospective randomized controlled study is aimed to investigate the impact of an additional lateral scout view on radiation dose and image quality in CT using ACTM. METHODS: Combined with ATCM (Care Dose 4D) on multidetector CT, 2 thoracic phantom CT image series were acquired in which planning was conducted with either an anteroposterior (AP) or an AP-lateral scout view...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28743654/endografting-under-assistance-of-trans-apical-body-floss-through-and-through-wiring-technique-and-rapid-ventricular-pacing-for-an-ascending-aortic-tuberculous-pseudoaneurysm
#6
Wan-Chi Chiang, Emily Ling-Lin Pai, Po-Lin Chen, Chun-Che Shih, I-Ming Chen
PURPOSE: To demonstrate the successful treatment of an ascending aortic tuberculous pseudoaneurysm using endografts through the transapical body floss wiring technique with rapid ventricular pacing support. CASE REPORT: A 77-year-old woman with a nonhealing anteromedial chest wound presented with sudden hypotension and hemoptysis. A computed tomography (CT) scan revealed a 9-cm-diameter pseudoaneurysm of the ascending aorta with sternal erosion near the wound. Conventional open repair was not preferred because of possible contamination of the interposition graft and difficult sternum closure...
July 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28743616/heart-position-variability-during-voluntary-moderate-deep-inspiration-breath-hold-radiotherapy-for-breast-cancer-determined-by-repeat-cbct-scans
#7
Paul van Haaren, Fiere Claassen-Janssen, Ingrid van de Sande, Liesbeth Boersma, Maurice van der Sangen, Coen Hurkmans
Voluntary moderate deep inspiration breath hold (vmDIBH) in left-sided breast cancer radiotherapy reduces cardiac dose. The aim of this study was to investigate heart position variability in vmDIBH using CBCT and to compare this variability with differences in heart position between vmDIBH and free breathing (FB). For 50 patients initial heart position with respect to the field edge (HP-FE) was measured on a vmDIBH planning CT scan. Breath-hold was monitored using an in-house developed vertical plastic stick...
July 22, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28741012/management-of-computed-tomography-detected-pneumothorax-in-patients-with-blunt-trauma-experience-from-a-community-based-hospital
#8
Ashraf F Hefny, Fathima T Kunhivalappil, Nikolay Matev, Norman A Avila, Masoud O Bashir, Fikri M Abu-Zidan
INTRODUCTION: With near-routine use of computed tomography (CT) for imaging trauma patients, the diagnosis of pneumothorax, especially occult pneumothorax, has increased. However, the need for chest tube insertion remains controversial. We aimed to study the management of pneumothorax detected on CT among patients with blunt trauma, including the decision for tube thoracostomy, in a community-based hospital. METHODS: Chest CT scans of patients with blunt trauma treated at Al Rahba Hospital, Abu Dhabi, from October 2010 to October 2014 were retrospectively studied...
July 25, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28739566/loculated-empyema-due-to-tuberculosis-in-a-child
#9
Pierre Goussard, Julie Morrison, Ilse Nadine Appel, Savvas Andronikou
A 9-year-old girl from black ethnic origin presented with a history of fever, cough, loss of weight and right-sided chest wall pain for 2 weeks. Chest X-ray demonstrated an effusion, which was shown to be loculated on chest CT scan. She was not responding to medical treatment and at thoracotomy loculated pus was drained. Mycobacterium tuberculosis (TB) was cultured from the pus. TB is a rare cause of loculated empyema with an overlapping clinical and radiological picture with pyogenic infections.
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28734685/r-scan-cardiac-ct-angiography-for-acute-chest-pain
#10
Pamela K Woodard, Sebastian R McWilliams, Demetrios A Raptis, Judd E Hollander, Harold I Litt, Todd C Villines, Quynh A Truong
No abstract text is available yet for this article.
July 20, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28732268/validation-comparison-and-combination-of-algorithms-for-automatic-detection-of-pulmonary-nodules-in-computed-tomography-images-the-luna16-challenge
#11
Arnaud Arindra Adiyoso Setio, Alberto Traverso, Thomas de Bel, Moira S N Berens, Cas van den Bogaard, Piergiorgio Cerello, Hao Chen, Qi Dou, Maria Evelina Fantacci, Bram Geurts, Robbert van der Gugten, Pheng Ann Heng, Bart Jansen, Michael M J de Kaste, Valentin Kotov, Jack Yu-Hung Lin, Jeroen T M C Manders, Alexander Sóñora-Mengana, Juan Carlos García-Naranjo, Evgenia Papavasileiou, Mathias Prokop, Marco Saletta, Cornelia M Schaefer-Prokop, Ernst T Scholten, Luuk Scholten, Miranda M Snoeren, Ernesto Lopez Torres, Jef Vandemeulebroucke, Nicole Walasek, Guido C A Zuidhof, Bram van Ginneken, Colin Jacobs
Automatic detection of pulmonary nodules in thoracic computed tomography (CT) scans has been an active area of research for the last two decades. However, there have only been few studies that provide a comparative performance evaluation of different systems on a common database. We have therefore set up the LUNA16 challenge, an objective evaluation framework for automatic nodule detection algorithms using the largest publicly available reference database of chest CT scans, the LIDC-IDRI data set. In LUNA16, participants develop their algorithm and upload their predictions on 888 CT scans in one of the two tracks: 1) the complete nodule detection track where a complete CAD system should be developed, or 2) the false positive reduction track where a provided set of nodule candidates should be classified...
July 13, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28730266/-malignant-melanoma-current-status
#12
REVIEW
J K Winkler, K Buder-Bakhaya, A Dimitrakopoulou-Strauss, A Enk, J C Hassel
CLINICAL ISSUE: The incidence of malignant melanoma is continuously increasing. The prognosis of metastatic disease is still limited. STANDARD TREATMENT: Until a few years ago palliative chemotherapy with a limited response rate was the standard treatment for metastatic melanoma. TREATMENT INNOVATIONS: Immunotherapy and targeted therapy provide new treatment options. Immune checkpoint inhibitors have significantly improved the prognosis. DIAGNOSTIC WORK-UP: Regional lymph node sonography, computed tomography (CT) of the neck, chest and abdomen and brain magnetic resonance imaging (MRI) are routinely used...
July 20, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28729772/serial-stimulated-thyroglobulin-measurements-are-more-specific-for-detecting-distant-metastatic-differentiated-thyroid-cancer-before-radioiodine-therapy
#13
Teng Zhao, Jun Liang, Tianjun Li, Wen Gao, Yansong Lin
OBJECTIVE: Preablative stimulated thyroglobulin (ps-Tg) has the potential to be used in identifying distant metastatic differentiated thyroid carcinoma (DM-DTC), but its single level can be affected by remnant thyroid tissue and thyrotropin (TSH). The objective of this retrospective study was to evaluate the value of serial ps-Tg measurements in identifying DM-DTC specifically. METHODS: A total of 317 DTC patients with serial measurements of ps-Tg, TSH and anti-Tg antibody were divided into M1 (n=72) and M0 (n=245) according to the presence of distant metastasis (DM) or not...
June 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28723769/overlooked-diagnosis-of-infected-paratracheal-air-cysts-in-patients-with-respiratory-symptoms-case-report
#14
Kyungsoo Bae, Kyung N Jeon, Mi J Park, Seung J Lee, Ho C Kim, Seung I Cha, Joung H Byun, Jong W Kim
RATIONALE: Infected paratracheal air cysts as the focus of respiratory symptoms can be overlooked in practice because of nonspecific symptoms and physician's scant knowledge for this entity. We report 2 cases of infected paratracheal air cyst diagnosed at chest computed tomography (CT) and bronchoscopy/endobronchial ultrasound. PATIENT CONCERN: Two patients visited our hospital with respiratory symptoms, including cough, sputum, and fever. DIAGNOSES: Chest CT showed paratracheal cystic lesions with air-fluid level in the thoracic inlet...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721321/correlation-of-ventilation-perfusion-v-q-scan-results-as-compared-with-clinical-probability-of-pulmonary-embolism-in-african-american-population
#15
Fasil Tiruneh, Ahmad Awan, Nicole Hunt, Nahom Tegegn, Daniel Larbi
Introduction Current guidelines suggest the use of the more specific Wells' score could safely reduce the number of unnecessary scans. There is a lack of research to support whether these guidelines apply to the African American population. This study aims to evaluate the correlation of clinical pretest probability of pulmonary embolism (PE) with ventilation-perfusion (V/Q) scan results in a predominantly African American population and to test whether current guidelines based on studies conducted in other populations hold true in this group...
June 14, 2017: Curēus
https://www.readbyqxmd.com/read/28719447/diffuse-increased-sodium-fluoride-gastric-activity-in-a-patient-with-hypercalcemia
#16
Fuqiang Shao, Shumao Zhang, Chi Qi, Yu Wang, Yue Chen
Increased extraosseous uptake of sodium fluoride can be visualized because of many different etiologies. A 62-year-old man with a history of osteoporosis had an F-sodium fluoride PET/CT scan for accessing chest pain caused by an accident. The images showed multiple fractures. Unexpectedly, diffuse activity was noted in the gastric wall, which was suggestive of possible hypercalcemia. The serum calcium level confirmed the patient had hypercalcemia.
July 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28712697/hepatic-steatosis-in-participants-in-a-program-of-low-dose-ct-screening-for-lung-cancer
#17
Xiangmeng Chen, Kunwei Li, Rowena Yip, Ponni Perumalswami, Andrea D Branch, Sara Lewis, David Del Bello, Betsy J Becker, David F Yankelevitz, Claudia I Henschke
OBJECTIVE: Determine the frequency of moderate-to-severe hepatic steatosis (HS) in asymptomatic participants in a low-dose CT (LDCT) screening program for lung cancer, to identify risk factors, and develop recommendations. METHODS: Baseline LDCT scans of the chest of 170 participants in an IRB-approved study between August 2011 and April 2016 were reviewed. Demographic variables, comorbidities, and liver function tests were documented. Hepatic and splenic attenuation values hounsfield unit (HU) were measured...
June 27, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28712661/managing-incidentalomas-safely-do-computed-tomography-requisitions-tell-us-what-we-need-to-know
#18
Matthew Walker, Joy Borgaonkar, Daria Manos
PURPOSE: Technological advancements and the ever-increasing use of computed tomography (CT) have greatly increased the detection of incidental findings, including tiny pulmonary nodules. The management of many "incidentalomas" is significantly influenced by a patient's history of cancer. The study aim is to determine if CT requisitions include prior history of malignancy. METHODS: Requisitions for chest CTs performed at our adult tertiary care hospital during April 2012 were compared to a cancer history questionnaire, administered to patients at the time of CT scan...
July 13, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28711184/establishing-national-diagnostic-reference-levels-drls-for-computed-tomography-in-egypt
#19
Dina Husseiny Salama, Jenia Vassileva, Gamal Mahdaly, Mona Shawki, Ahmad Salama, Debbie Gilley, Madan Mohan Rehani
OBJECTIVES: To establish national diagnostic reference levels (DRLs) in Egypt for computed tomography (CT) examinations of adults and identify the potential for optimization. METHODS: Data from 3762 individual patient's undergoing CT scans of head, chest (high resolution), abdomen, abdomen-pelvis, chest-abdomen-pelvis and CT angiography (aorta and both lower limbs) examinations in 50 CT facilities were collected. This represents 20% of facilities in the country and all of the 27 Governorates...
July 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28708732/investigating-the-robustness-neighborhood-gray-tone-difference-matrix-and-gray-level-co-occurrence-matrix-radiomic-features-on-clinical-computed-tomography-systems-using-anthropomorphic-phantoms-evidence-from-a-multivendor-study
#20
Usman Mahmood, Aditya P Apte, Joseph O Deasy, C Ross Schmidtlein, Amita Shukla-Dave
OBJECTIVE: The aim of this study was to determine if optimized imaging protocols across multiple computed tomography (CT) vendors could result in reproducible radiomic features calculated from an anthropomorphic phantom. METHODS: Materials with varying degrees of heterogeneity were placed throughout the lungs of the phantom. Twenty scans of the phantom were acquired on 3 CT manufacturers with chest CT protocols that had optimized protocol parameters. Scans were reconstructed using vendor-specific standards and lung kernels...
July 13, 2017: Journal of Computer Assisted Tomography
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