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https://www.readbyqxmd.com/read/28822787/global-regional-and-national-deaths-prevalence-disability-adjusted-life-years-and-years-lived-with-disability-for-chronic-obstructive-pulmonary-disease-and-asthma-1990-2015-a-systematic-analysis-for-the-global-burden-of-disease-study-2015
#1
(no author information available yet)
BACKGROUND: Chronic obstructive pulmonary disease (COPD) and asthma are common diseases with a heterogeneous distribution worldwide. Here, we present methods and disease and risk estimates for COPD and asthma from the Global Burden of Diseases, Injuries, and Risk Factors (GBD) 2015 study. The GBD study provides annual updates on estimates of deaths, prevalence, and disability-adjusted life years (DALYs), a summary measure of fatal and non-fatal disease outcomes, for over 300 diseases and injuries, for 188 countries from 1990 to the most recent year...
August 16, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28800546/mr-based-respiratory-and-cardiac-motion-correction-for-pet-imaging
#2
Thomas Küstner, Martin Schwartz, Petros Martirosian, Sergios Gatidis, Ferdinand Seith, Christopher Gilliam, Thierry Blu, Hadi Fayad, Dimitris Visvikis, F Schick, B Yang, H Schmidt, N F Schwenzer
PURPOSE: To develop a motion correction for Positron-Emission-Tomography (PET) using simultaneously acquired magnetic-resonance (MR) images within 90 s. METHODS: A 90 s MR acquisition allows the generation of a cardiac and respiratory motion model of the body trunk. Thereafter, further diagnostic MR sequences can be recorded during the PET examination without any limitation. To provide full PET scan time coverage, a sensor fusion approach maps external motion signals (respiratory belt, ECG-derived respiration signal) to a complete surrogate signal on which the retrospective data binning is performed...
August 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28752500/negative-impact-of-leukoaraiosis-on-the-incidence-of-brain-metastases-in-patients-with-lung-cancer
#3
Nakamasa Hayashi, Koichi Mitsuya, Yoko Nakasu, Tateaki Naito, Fumiharu Ohka, Toshiaki Takahashi
The embolization of cancer cells to cerebral vessels occurs early in the multi-step metastatic process. We aimed to determine whether the presence of leukoaraiosis (LA) before treatment would predict the development of brain metastases (BM) in patients with lung cancer. Between January 2014 and June 2015, 1007 patients underwent initial (i.e., prior to any chemotherapy) or routine magnetic resonance (MR) imaging of the brain and exhibited no evidence of BM. Of these, 189 underwent repeat MR imaging; 34 of 189 patients (18%) developed new BM, whereas 155 patients did not...
July 27, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28720600/is-the-mechanism-of-re-expansion-pulmonary-oedema-in-a-heart-lung-interaction
#4
Candy Masego Mokotedi, Martin Balik
The mechanism of re-expansion pulmonary oedema (Re-PE) is unclear. There are multiple variables in play when evaluating the response to evacuation of pleural fluid. We present an educational case of a critically ill patient admitted for respiratory failure who was fully dependent on ventricular pacing set at a constant rate throughout the episode of Re-PE. The transthoracic echocardiography (TTE) showed an ejection fraction of 38%, moderate mitral regurgitation (MR), mildly dilated right ventricle and moderate pulmonary hypertension...
July 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28704516/ultrasound-diagnosis-of-transverse-sinus-hypoplasia-using-flow-profiles-of-the-internal-jugular-vein
#5
A-Ching Chao, Ke Han, Feng-Chi Chang, Hung-Yi Hsu, Chih-Ping Chung, Wen-Yung Sheng, Lung Chan, Jiang Wu, Han-Hwa Hu
Accurate diagnosis of subtypes of transverse sinus (TS) hypoplasia requires more expensive methods like magnetic resonance (MR) imaging. We hypothesized ultrasound findings of the internal jugular vein (IJV) can be surrogate indicators for diagnosis of TS hypoplasia. MR images were reviewed in 131 subjects to evaluate TS diameter and the location and degree of venous flow stenosis and obstruction. Ultrasound parameters including the cross-sectional lumen area (CSA), time-average-mean velocity (TAMV), and flow volume (FV) at each IJV segment were also evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28690355/evaluation-of-lung-tumor-motion-management-in-radiation-therapy-with-dynamic-mri
#6
Seyoun Park, Rana Farah, Steven M Shea, Erik Tryggestad, Russell Hales, Junghoon Lee
Surrogate-based tumor motion estimation and tracing methods are commonly used in radiotherapy despite the lack of continuous real time 3D tumor and surrogate data. In this study, we propose a method to simultaneously track the tumor and external surrogates with dynamic MRI, which allows us to evaluate their reproducible correlation. Four MRI-compatible fiducials are placed on the patient's chest and upper abdomen, and multi-slice 2D cine MRIs are acquired to capture the lung and whole tumor, followed by two-slice 2D cine MRIs to simultaneously track the tumor and fiducials, all in sagittal orientation...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28684908/%C3%AE-bisabolol-loaded-lipid-core-nanocapsules-reduce-lipopolysaccharide-induced-pulmonary-inflammation-in-mice
#7
Ana Paula L D'Almeida, Maria T Pacheco de Oliveira, Éverton T de Souza, Diego de Sá Coutinho, Bianca T Ciambarella, Cristiano R Gomes, Thatiana Terroso, Sílvia S Guterres, Adriana R Pohlmann, Patrícia Mr Silva, Marco A Martins, Andressa Bernardi
Acute respiratory distress syndrome (ARDS) is a severe clinical condition of respiratory failure due to an intense inflammatory response with different etiologies. Despite all efforts, therapy remains limited, and ARDS is still associated with high mortality and morbidity. Plants can provide a vast source of active natural products for the discovery of new drugs. α-bisabolol (α-bis), a constituent of the essential oil from chamomile, has elicited pharmacological interest. However, the molecule has some limitations to its biological application...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28664245/a-semiquantitative-mri-score-can-predict-loss-of-lung-function-in-patients-with-cystic-fibrosis-preliminary-results
#8
Juergen F Schaefer, Andreas Hector, Katharina Schmidt, Matthias Teufel, Sabrina Fleischer, Ute Graepler-Mainka, Joachim Riethmueller, Sergios Gatidis, Susanne Schaefer, Konstantin Nikolaou, Dominik Hartl, Ilias Tsiflikas
OBJECTIVES: To evaluate the applicability of a semiquantitative MRI scoring system (MR-CF-S) as a prognostic marker for clinical course of cystic fibrosis (CF) lung disease. METHODS: This observational study of a single-centre CF cohort included a group of 61 patients (mean age 12.9 ± 4.7 years) receiving morphological and functional pulmonary MRI, pulmonary function testing (PFT) and follow-up of 2 years. MRI was analysed by three raters using MR-CF-S. The inter-rater agreement, correlation of score categories with forced expiratory volume in 1 s (FEV1) at baseline, and the predictive value of clinical parameters, and score categories was assessed for the whole cohort and a subgroup of 40 patients with moderately impaired lung function...
June 29, 2017: European Radiology
https://www.readbyqxmd.com/read/28652096/mr-imaging-of-endometriosis-spectrum-of-disease
#9
C Bourgioti, O Preza, E Panourgias, K Chatoupis, A Antoniou, M E Nikolaidou, L A Moulopoulos
Endometriosis is a common gynecological disorder defined by the presence of endometrial tissue outside the uterus. It is the most common cause of chronic pelvic pain and typically affects the ovaries, uterine ligaments, peritoneum, tubes, rectovaginal septum and bladder. It may, however, be found at various extrapelvic sites, including the perineum, liver, pancreas, lung or even the central nervous system, and in such cases, diagnosis may be quite challenging. Even though definitive diagnosis requires laparoscopy, preoperative identification of endometriosis is important not only to differentiate it from other diseases with similar clinical presentations but also, for accurate presurgical mapping, since complete removal of all endometriotic foci is critical for the effective treatment of the patient's symptoms...
June 23, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28651599/dosimetric-evaluation-of-synthetic-ct-for-magnetic-resonance-only-based-radiotherapy-planning-of-lung-cancer
#10
Hesheng Wang, Hersh Chandarana, Kai Tobias Block, Thomas Vahle, Matthias Fenchel, Indra J Das
BACKGROUND: Interest in MR-only treatment planning for radiation therapy is growing rapidly with the emergence of integrated MRI/linear accelerator technology. The purpose of this study was to evaluate the feasibility of using synthetic CT images generated from conventional Dixon-based MRI scans for radiation treatment planning of lung cancer. METHODS: Eleven patients who underwent whole-body PET/MR imaging following a PET/CT exam were randomly selected from an ongoing prospective IRB-approved study...
June 26, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28639923/reply-to-use-of-unenhanced-mr-lymphography-to-characterize-lung-lymphatic-diseases
#11
Xiaoli Sun, Rengui Wang
No abstract text is available yet for this article.
July 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28639922/use-of-unenhanced-mr-lymphography-to-characterize-lung-lymphatic-diseases
#12
Lionel Arrivé, Laurence Monnier-Cholley, Sanaâ El Mouhadi
No abstract text is available yet for this article.
July 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28617548/bioinformatic-analysis-of-prognostic-value-of-arap3-in-breast-cancer-and-the-associated-signaling-pathways
#13
J-J Han, B-R Du, C-H Zhang
OBJECTIVE: In this study, we tried to pool previous annotated genomic data to assess the association between ARAP3 expression and metastatic relapse (MR) risk in patients with breast cancer. Moreover, we also investigated the signaling pathways in which ARAP3 might be involved in breast cancer. MATERIALS AND METHODS: The raw microarray data (GDS5666) that compared gene transcriptional profiles of 4T1 derived lung-aggressive explant and primary tumor explant were reanalyzed to identify the dysregulated genes...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28601174/thoracic-neoplasms-in-children-contemporary-perspectives-and-imaging-assessment
#14
REVIEW
Matthew A Zapala, Victor M Ho-Fung, Edward Y Lee
This article focuses on commonly encountered primary lung, airway, mediastinal, and chest wall neoplasms that occur in the pediatric population. Although primary pediatric thoracic neoplasms are rare, imaging is critical in their diagnostic work-up. An overview of the latest imaging techniques specific to evaluate these pediatric thoracic neoplasms is presented across the spectrum of modalities from radiography to PET/MR imaging. In addition, the characteristic imaging appearances of these pediatric primary thoracic neoplasms are discussed with an emphasis on what the radiologist needs to know in routine clinical practice...
July 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28594918/obesity-metabolic-factors-and-risk-of-different-histological-types-of-lung-cancer-a-mendelian-randomization-study
#15
Robert Carreras-Torres, Mattias Johansson, Philip C Haycock, Kaitlin H Wade, Caroline L Relton, Richard M Martin, George Davey Smith, Demetrius Albanes, Melinda C Aldrich, Angeline Andrew, Susanne M Arnold, Heike Bickeböller, Stig E Bojesen, Hans Brunnström, Jonas Manjer, Irene Brüske, Neil E Caporaso, Chu Chen, David C Christiani, W Jay Christian, Jennifer A Doherty, Eric J Duell, John K Field, Michael P A Davies, Michael W Marcus, Gary E Goodman, Kjell Grankvist, Aage Haugen, Yun-Chul Hong, Lambertus A Kiemeney, Erik H F M van der Heijden, Peter Kraft, Mikael B Johansson, Stephen Lam, Maria Teresa Landi, Philip Lazarus, Loïc Le Marchand, Geoffrey Liu, Olle Melander, Sungshim L Park, Gad Rennert, Angela Risch, Eric B Haura, Ghislaine Scelo, David Zaridze, Anush Mukeriya, Milan Savić, Jolanta Lissowska, Beata Swiatkowska, Vladimir Janout, Ivana Holcatova, Dana Mates, Matthew B Schabath, Hongbing Shen, Adonina Tardon, M Dawn Teare, Penella Woll, Ming-Sound Tsao, Xifeng Wu, Jian-Min Yuan, Rayjean J Hung, Christopher I Amos, James McKay, Paul Brennan
BACKGROUND: Assessing the relationship between lung cancer and metabolic conditions is challenging because of the confounding effect of tobacco. Mendelian randomization (MR), or the use of genetic instrumental variables to assess causality, may help to identify the metabolic drivers of lung cancer. METHODS AND FINDINGS: We identified genetic instruments for potential metabolic risk factors and evaluated these in relation to risk using 29,266 lung cancer cases (including 11,273 adenocarcinomas, 7,426 squamous cell and 2,664 small cell cases) and 56,450 controls...
2017: PloS One
https://www.readbyqxmd.com/read/28590295/68ga-psma-pet-mr-positive-peritoneal-metastasis-in-the-falciform-ligament-in-recurrent-prostate-cancer
#16
Benedikt Kranzbühler, Sébastien Tran, Thomas Zilli, Irene A Burger
Synchronous or metachronous metastases develop in approximately one third of all prostate cancer (PCa) patients. Main sites of metastasis include lymph nodes, bone, lung and liver. Secondary peritoneal carcinomatosis is very rare in PCa, with only a few published cases. Ga-PSMA PET-based imaging is a promising tool for staging and restaging PCa. We report a case of Ga-PSMA PET/MR-positive peritoneal metastasis as site of primary relapse after definitive PCa treatment in a 58-year-old man with a prostate-specific antigen of 30 ng/mL at time of the study...
August 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28570032/free-breathing-pediatric-chest-mri-performance-of-self-navigated-golden-angle-ordered-conical-ultrashort-echo-time-acquisition
#17
Evan J Zucker, Joseph Y Cheng, Anshul Haldipur, Michael Carl, Shreyas S Vasanawala
PURPOSE: To assess the feasibility and performance of conical k-space trajectory free-breathing ultrashort echo time (UTE) chest magnetic resonance imaging (MRI) versus four-dimensional (4D) flow and effects of 50% data subsampling and soft-gated motion correction. MATERIALS AND METHODS: Thirty-two consecutive children who underwent both 4D flow and UTE ferumoxytol-enhanced chest MR (mean age: 5.4 years, range: 6 days to 15.7 years) in one 3T exam were recruited...
June 1, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28562622/suv-quantification-of-physiological-lung-tissue-in-an-integrated-pet-mr-system-impact-of-lung-density-and-bone-tissue
#18
Ferdinand Seith, Holger Schmidt, Sergios Gatidis, Ilja Bezrukov, Christina Schraml, Christina Pfannenberg, Christian la Fougère, Konstantin Nikolaou, Nina Schwenzer
PURPOSE: The aim of the study was to investigate the influence of lung density changes as well as bone proximity on the attenuation correction of lung standardized uptake values (SUVs). METHODS AND MATERIALS: 15 patients with mostly oncologic diseases were examined in 18F-FDG-PET/CT and subsequently in a fully integrated PET/MR scanner. From each PET dataset acquired in PET/MR, four different PET reconstructions were computed using different attenuation maps (μ-maps): i) CT-based μ-map (gold standard); ii) CT-based μ-map in which the linear attenuation coefficients (LAC) of the lung tissue was replaced by the lung LAC from the MR-based segmentation method; iii) based on reconstruction ii), the LAC of bone structures was additionally replaced with the LAC from the MR-based segmentation method; iv) the vendor-provided MR-based μ-map (segmentation-based method)...
2017: PloS One
https://www.readbyqxmd.com/read/28550025/30-years-of-the-mineralocorticoid-receptor-mineralocorticoid-receptor-null-mice-informing-cell-type-specific-roles
#19
REVIEW
Timothy J Cole, Morag J Young
The mineralocorticoid receptor (MR) mediates the actions of two important adrenal corticosteroid hormones, aldosterone and cortisol. The cell signalling roles of the MR in vivo have expanded enormously since the cloning of human MR gene 30 years ago and the first MR gene knockout in mice nearly 20 years ago. Complete ablation of the MR revealed important roles postnatally for regulation of kidney epithelial functions, with MR-null mice dying 1-2 weeks postnatally from renal salt wasting and hyperkalaemia, with elevated plasma renin and aldosterone...
July 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28543069/real-time-dynamic-mr-image-reconstruction-using-compressed-sensing-and-principal-component-analysis-cs-pca-demonstration-in-lung-tumor-tracking
#20
Bryson Dietz, Eugene Yip, Jihyun Yun, B Gino Fallone, Keith Wachowicz
PURPOSE: This work presents a real-time dynamic image reconstruction technique, which combines compressed sensing and principal component analysis (CS-PCA), to achieve real-time adaptive radiotherapy with the use of a linac-magnetic resonance imaging system. METHODS: Six retrospective fully sampled dynamic data sets of patients diagnosed with non-small-cell lung cancer were used to investigate the CS-PCA algorithm. Using a database of fully sampled k-space, principal components (PC's) were calculated to aid in the reconstruction of undersampled images...
August 2017: Medical Physics
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