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https://www.readbyqxmd.com/read/29791554/chest-x-ray-and-chest-ct-findings-in-patients-diagnosed-with-pulmonary-tuberculosis-following-solid-organ-transplantation-a-systematic-review
#1
Irai Luis Giacomelli, Roberto Schuhmacher Neto, Edson Marchiori, Marisa Pereira, Bruno Hochhegger
The objective of this systematic review was to select articles including chest X-ray or chest CT findings in patients who developed pulmonary tuberculosis following solid organ transplantation (lung, kidney, or liver). The following search terms were used: "tuberculosis"; "transplants"; "transplantation"; "mycobacterium"; and "lung". The databases used in this review were PubMed and the Brazilian Biblioteca Virtual em Saúde (Virtual Health Library). We selected articles in English, Portuguese, or Spanish, regardless of the year of publication, that met the selection criteria in their title, abstract, or body of text...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791206/effect-of-ct-window-settings-on-size-measurements-of-the-solid-component-in-sub-solid-nodules-evaluation-of-prediction-efficacy-of-the-degree-of-pathological-malignancy-in-lung-adenocarcinoma
#2
Shi-Yuan Liu, Qiong Li, Ya-Feng Gu, Li Fan, Qing-Chu Li, Yi Xiao
To investigate the predictive value of size measurements of the solid components in pulmonary subsolid nodules with different CT window settings and to evaluate the degree of pathological malignancy in lung adenocarcinoma.  Methods: The preoperative chest CT images and pathological data of 125 patients were retrospectively evaluated. The analysis included 127 surgically resected lung adenocarcinomas that manifested as subsolid nodules. All subsolid nodules were divided into two groups: 69 in group A, including 22 adenocarcinomas in situ (AIS) and 47 minimally invasive adenocarcinomas (MIA); 58 in group B that included invasive pulmonary adenocarcinomas (IPA)...
May 23, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29788984/f-18-fdg-pet-ct-in-26-patients-with-sapho-syndrome-a-new-vision-of-clinical-and-bone-scintigraphy-correlation
#3
Xiaochuan Sun, Chen Li, Yihan Cao, Ximin Shi, Li Li, Weihong Zhang, Xia Wu, Nan Wu, Hongli Jing, Wen Zhang
BACKGROUNDS: Whole-body bone scintigraphy (WBBS) and MRI are widely used in assessment of patients with synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO) syndrome. However, the value of F-18 fluorodeoxyglucose-positron emission tomography/computed tomography (18 F-FDG PET/CT) in SAPHO syndrome was unclear. The aim of this study was to characterize the manifestation of SAPHO syndrome on 18 F-FDG PET/CT and explore its relationship with clinical symptoms and WBBS. METHODS: Twenty-six patients who suffered from SAPHO syndrome and had undergone whole-body 18 F-FDG PET/CT were recruited in Peking Union Medical College Hospital from 2004 to 2016...
May 22, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29785934/imaging-modalities-in-the-etiologic-evaluation-of-unilateral-vocal-fold-paralysis
#4
Suat Bilici, Muhammet Yildiz, Ozgur Yigit, Esra Misir
OBJECTIVE: This study aimed to investigate the roles of computed tomography (CT) and neck ultrasonography (US) in evaluating unilateral vocal fold paralysis (UVFP) of unknown etiology and to compare our results with those of other studies to assess the differences in etiology of UVFP. METHODS: We investigated the medical records of 202 eligible patients with UVFP. In total, 168 underwent chest CT, 118 underwent neck CT, and 108 underwent head CT. One hundred and three patients were also evaluated with high-resolution neck US...
May 18, 2018: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29785839/optimization-of-a-secondary-voi-protocol-for-lung-imaging-in-a-clinical-ct-scanner
#5
Thomas C Larsen, Vissagan Gopalakrishnan, Jianhua Yao, Catherine P Nguyen, Marcus Y Chen, Joel Moss, Han Wen
We present a solution to meet an unmet clinical need of an in-situ "close look" at a pulmonary nodule or at the margins of a pulmonary cyst revealed by a primary (screening) chest CT while the patient is still in the scanner. We first evaluated options available on current whole-body CT scanners for high resolution screening scans, including ROI reconstruction of the primary scan data and HRCT, but found them to have insufficient SNR in lung tissue or discontinuous slice coverage. Within the capabilities of current clinical CT systems, we opted for the solution of a secondary, volume-of-interest (VOI) protocol where the radiation dose is focused into a short-beam axial scan at the z position of interest, combined with a small-FOV reconstruction at the xy position of interest...
May 21, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29783820/-efficacy-of-bronchoalveolar-lavage-and-its-influence-factors-in-the-treatment-of-mycoplasma-pneumoniae-pneumonia-with-atelectasis
#6
M Yang, D H Yang, X Yang, Y S Wang, L Wu, Z M Chen
Objective: To investigate the efficacy of bronchoalveolar lavage (BAL) and its influence factors in the treatment of Mycoplasma pneumoniae pneumonia (MPP) with atelectasis. Methods: A retrospective case control study was performed on hospitalized MPP patients with atelectasis and received BAL in the Department of Pulmonology, Children's Hospital Zhejiang University School of Medicine from January 1, 2015 to July 31, 2017. Fever relieved in 48 hours and chest imaging improved in one week after BAL were considered effective...
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29782242/case-254-posttraumatic-migrating-fat-embolus-causing-fat-emboli-syndrome
#7
Sébastien Molière, Stéphane Kremer, Guillaume Bierry
History An otherwise healthy 18-year-old man was admitted to the emergency department with a closed displaced fracture of the left femoral shaft ( Fig 1 ) after a high-velocity motorbike accident. At admission, other physical examination findings were unremarkable. Initial unenhanced and contrast material-enhanced (120 mL of Iomeron 400; Bracco Imaging, Milan, Italy) computed tomography (CT) was performed in the arterial and venous phases from the head to the knees. No abnormalities were noted in the brain or chest at initial CT...
June 2018: Radiology
https://www.readbyqxmd.com/read/29780633/deep-learning-aided-decision-support-for-pulmonary-nodules-diagnosing-a-review
#8
REVIEW
Yixin Yang, Xiaoyi Feng, Wenhao Chi, Zhengyang Li, Wenzhe Duan, Haiping Liu, Wenhua Liang, Wei Wang, Ping Chen, Jianxing He, Bo Liu
Deep learning techniques have recently emerged as promising decision supporting approaches to automatically analyze medical images for different clinical diagnosing purposes. Diagnosing of pulmonary nodules by using computer-assisted diagnosing has received considerable theoretical, computational, and empirical research work, and considerable methods have been developed for detection and classification of pulmonary nodules on different formats of images including chest radiographs, computed tomography (CT), and positron emission tomography in the past five decades...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29780625/is-a-5-mm-diameter-an-appropriate-cut-off-value-for-the-diagnosis-of-atypical-adenomatous-hyperplasia-and-adenocarcinoma-in-situ-on-chest-computed-tomography-and-pathological-examination
#9
Xiaohuan Pan, Xinguan Yang, Jingxu Li, Xiao Dong, Jianxing He, Yubao Guan
Background: Preinvasive lesions, such as atypical adenomatous hyperplasia (AAH) and adenocarcinoma in situ (AIS), usually appear as pure ground-glass nodules (pGGNs) on thin-section computed tomography (TSCT). AAH is usually less than 5 mm wide on imaging and pathological examinations. We aimed to determine whether a 5-mm cut-off value was appropriate for the diagnosis of AAH and AIS. Methods: We retrospectively analyzed the performance of TSCT in evaluating 80 pathologically confirmed preinvasive lesions (33 AAH lesions in 31 patients and 47 AIS lesions in 45 patients)...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29775663/free-breathing-ultrashort-echo-time-lung-magnetic-resonance-imaging-using-stack-of-spirals-acquisition-a-feasibility-study-in-oncology-patients
#10
Min Jae Cha, Hyun Jeong Park, Mun Young Paek, Alto Stemmer, Eun Sun Lee, Sung Bin Park, Yang Soo Kim
OBJECTIVES: To investigate the diagnostic accuracy of lung magnetic resonance imaging (MRI) with a free-breathing three-dimensional ultrashort echo time spoiled gradient echo sequence using a stack-of-spirals acquisition (spiral 3D UTE) for pulmonary nodule detection at 3 T in oncology patients. METHODS: The institutional review board approved this retrospective study. Between June and September of 2017, 32 oncology patients underwent both free-breathing spiral 3D UTE of the lungs and thin-section chest computed tomography (CT) for pulmonary metastasis workups...
May 15, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29773293/usefulness-of-the-forced-oscillation-technique-in-assessing-the-therapeutic-result-of-tracheobronchial-central-airway-obstruction
#11
Masanori Yasuo, Yoshiaki Kitaguchi, Fumiya Kinota, Makoto Kosaka, Kazuhisa Urushihata, Atsuhito Ushiki, Hiroshi Yamamoto, Satoshi Kawakami, Masayuki Hanaoka
BACKGROUND: Pulmonary function tests (PFTs) comprise the traditional method for detecting central airway obstruction (CAO) and evaluating therapeutic effects, but are effort-dependent. By contrast, the forced oscillation technique (FOT) is performed during tidal breathing in an effort-independent mode and is universally used to assess respiratory function in patients with chronic obstructive pulmonary disease (COPD) and asthma. We used the FOT to measure airway resistance and reactance in patients with CAO before and after interventional bronchoscopy and compared the results to data obtained using PFTs...
May 2018: Respiratory Investigation
https://www.readbyqxmd.com/read/29771274/identification-of-chronic-obstructive-pulmonary-disease-axes-that-predict-all-cause-mortality-the-copdgene-study
#12
Gregory L Kinney, Stephanie A Santorico, Kendra A Young, Michael H Cho, Peter J Castaldi, Raul San José Estépar, James C Ross, Jennifer G Dy, Barry J Make, Elizabeth A Regan, David A Lynch, Douglas C Everett, Sharon M Lutz, Edwin K Silverman, George R Washko, James D Crapo, John E Hokanson
Chronic Obstructive Pulmonary Disease (COPD) is a syndrome caused by damage to the lungs resulting in decreased pulmonary function and reduced structural integrity. Pulmonary function testing (PFT) is currently used to diagnose and stratify COPD into severity groups and chest computed tomography (CT) imaging is often used to assess structural changes in the lungs. We hypothesized that the combination of PFT and CT phenotypes would provide a more powerful tool for assessing underlying morphologic differences associated with pulmonary function in COPD than PFT alone...
May 16, 2018: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29769481/a-case-of-thoracic-endometriosis-syndrome-presenting-with-recurrent-catamenial-pneumothorax
#13
Shoaib Z Junejo, Sandeep Singh Lubana, Sukhdip Singh Shina, Sandeep Singh Tuli
BACKGROUND Catamenial pneumothorax (CP) is a spontaneous pneumothorax commonly associated with menstrual periods. Endometrial tissues most commonly involve the pelvic region. However, after the pelvis, the lungs are most frequently involved. Thoracic endometriosis should always be suspected in young women presenting with CP. CASE REPORT A 30-year-old woman with history of endometriosis presented with chief complaint of umbilical pain. A computerized tomography (CT) scan of the abdomen and pelvis was performed, which showed an incidental finding of a large right-sided pneumothorax...
May 17, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29762055/evaluating-the-effect-of-increased-pitch-iterative-reconstruction-and-dual-source-ct-on-dose-reduction-and-image-quality
#14
Joanna Gariani, Steve P Martin, Diomidis Botsikas, Christoph D Becker, Xavier Montet
OBJECTIVE: to compare radiation dose and image quality of thoraco-abdominal scans obtained with a high-pitch protocol (pitch 3.2) and iterative reconstruction (SAFIRE) in comparison to standard pitch reconstructed with FBP using dual-source CT. METHODS: 114 CT scans (Somatom Definition Flash, Siemens), 39 thoracic scans, 54 thoraco-abdominal scans and 21 abdominal scans were performed. Analysis of three protocols was undertaken; pitch of 1 reconstructed with FBP, pitch of 3...
May 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29758455/deep-neural-networks-for-automatic-detection-of-osteoporotic-vertebral-fractures-on-ct-scans
#15
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/29755848/ct-dose-modulation-using-automatic-exposure-control-in-whole-body-pet-ct-effects-of-scout-imaging-direction-and-arm-positioning
#16
Yusuke Inoue, Kazunori Nagahara, Hiroko Kudo, Hiroyasu Itoh
Automatic exposure control (AEC) modulates tube current and consequently X-ray exposure in CT. We investigated the behavior of AEC systems in whole-body PET/CT. CT images of a whole-body phantom were acquired using AEC on two scanners from different manufactures. The effects of scout imaging direction and arm positioning on dose modulation were evaluated. Image noise was assessed in the chest and upper abdomen. On one scanner, AEC using two scout images in the posteroanterior (PA) and lateral (Lat) directions provided relatively constant image noise along the z-axis with the arms at the sides...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29750110/non-specific-interstitial-pneumonia-associated-with-clinically-amyopathic-dermatomyositis-showing-crazy-paving-appearance-on-thin-section-lung-ct
#17
Yuya Aono, Tatsuru Eifuku, Tomohiro Uto, Jun Sato, Shiro Imokawa, Takafumi Suda
The "crazy paving" appearance consists of ground-glass opacity superimposed on a network of linear opacities on thin-section computed tomography (CT) images of the lung. This finding has been described in a variety of diseases but is extremely rare in patients with non-specific interstitial pneumonia (NSIP). We describe a 45-year-old woman with biopsy-proven NSIP associated with clinically amyopathic dermatomyositis that showed a "crazy paving" appearance on thin-section CT of the lung. Clinicians should include NSIP in the differential diagnosis in patients presenting with "crazy paving" appearance on thin-section chest CT...
July 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29746705/a-new-method-for-ct-dose-estimation-by-determining-patient-water-equivalent-diameter-from-localizer-radiographs-geometric-transformation-and-calibration-methods-using-readily-available-phantoms
#18
Da Zhang, Georgeta Mihai, Larry G Barbaras, Olga R Brook, Matthew R Palmer
PURPOSE: Water equivalent diameter (Dw) reflects patient's attenuation and is a sound descriptor of patient size, and is used to determine size specific dose estimator from a CT exam. Calculating Dw from CT localizer radiographs makes it possible to utilize Dw before actual scans, and minimizes truncation errors due to limited to utilize Dw before actual scans, and minimizes truncation errors due to limited reconstructed fields of view. One obstacle preventing the user community from implementing this useful tool is the necessity to calibrate localizer pixel values so as to represent water equivalent attenuation...
May 10, 2018: Medical Physics
https://www.readbyqxmd.com/read/29742701/early-tumor-shrinkage-served-as-a-prognostic-factor-for-patients-with-stage-iii-non-small-cell-lung-cancer-treated-with-concurrent-chemoradiotherapy
#19
Min Wei, Qingqing Ye, Xuan Wang, Men Wang, Yan Hu, Yonghua Yang, Jiyuan Yang, Jun Cai
BACKGROUND: Lung cancer is the most common cause of cancer death. About 80% of patients are diagnosed at stage III in the non-small cell lung cancer (NSCLC). It is extremely important to understand the progression of this disease which has low survival times despite the advancing treatment modalities. We aimed to investigate the relationship between early tumor shrinkage (ETS) after initial concurrent chemoradiotherapy (C-CRT) and survival outcome in patients with stage III (NSCLC). METHODS: A retrospective review of 103 patients with stage III NSCLC who had received C-CRT from January 2006 to October 2011 was performed...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29742695/anterior-mediastinal-hodgkin-lymphoma-presenting-as-an-extremely-hypervascular-tumor-on-computed-tomography-a-case-report
#20
Soo Jeong Lee, Ji Young Rho, Gwang Il Kim, Joonsuk Park
RATIONALE: In the thorax, Hodgkin lymphoma (HL) most frequently involves the anterior mediastinal and paratracheal regions and tends to spread to contiguous nodal groups. Enlarged lymph nodes typically have homogeneous soft tissue attenuation similar to that of muscle tissue on computed tomography (CT). PATIENT CONCERNS: A contrast-enhanced CT examination of a 19-year-old man with right-sided chest pain showed an intense, heterogeneously enhancing mass with organization of serpentine and dilated blood vessels in the right anterior mediastinum that had invaded the upper lobe of the right lung...
May 2018: Medicine (Baltimore)
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