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https://www.readbyqxmd.com/read/27891048/metabolic-signatures-of-lung-cancer-in-sputum-and-exhaled-breath-condensate-detected-by-1-h-magnetic-resonance-spectroscopy-a-feasibility-study
#1
Naseer Ahmed, Tedros Bezabeh, Omkar B Ijare, Renelle Myers, Reem Alomran, Michel Aliani, Zoann Nugent, Shantanu Banerji, Julian Kim, Gefei Qing, Zoheir Bshouty
OBJECTIVES: Lung cancer is one of the most lethal cancers. Currently, there are no biomarkers for early detection, monitoring treatment response, and detecting recurrent lung cancer. We undertook this study to determine if (1)H magnetic resonance spectroscopy (MRS) of sputum and exhaled breath condensate (EBC), as a noninvasive tool, can identify metabolic biomarkers of lung cancer. MATERIALS AND METHODS: Sputum and EBC samples were collected from 20 patients, comprising patients with pathologically confirmed non-small cell lung cancer (n = 10) and patients with benign respiratory conditions (n = 10)...
2016: Magnetic Resonance Insights
https://www.readbyqxmd.com/read/27859552/low-pass-imaging-of-dynamic-acquisitions-lida-with-a-group-oriented-registration-goreg-for-proton-mr-imaging-of-lung-ventilation
#2
Andreas Voskrebenzev, Marcel Gutberlet, Till F Kaireit, Frank Wacker, Jens Vogel-Claussen
PURPOSE: To compare low-pass imaging dynamic acquisitions (LIDA) approach in combination with a group-oriented registration (GOREG) scheme with conventional Fourier decomposition (FD). METHODS: Dynamic images of six healthy volunteers and one chronic obstructive pulmonary disease (COPD) patient were acquired on a 1.5 Tesla scanner using a spoiled gradient echo sequence. For the volunteers each slice was acquired during regular (RB) and irregular breathing (IB). For conventional registration (CR), all images were directly registered to the intermediate respiratory position...
November 18, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27832191/dengue-virus-infection-is-through-a-cooperative-interaction-between-a-mannose-receptor-and-clec5a-on-macrophage-as-a-multivalent-hetero-complex
#3
Yen-Lung Lo, Gunn-Guang Liou, Jia-Huei Lyu, Michael Hsiao, Tsui-Ling Hsu, Chi-Huey Wong
Dengue fever is a mosquito-borne viral pandemic disease that is widespread in the tropical and subtropical areas. Dengue virus uses human mannose-binding receptor (MR) and DC-SIGN on macrophages as primary receptors, and CLEC5A as signaling receptor to sense the dengue virus invasion and then to signal and stimulate macrophages to secrete cytokines. But the interplay between MR/DC-SIGN and CLEC5A is unknown. Here we demonstrate a plausible mechanism for the interaction, i.e. MR/DC-SIGN first attracts the virus with high avidity, and the virus concurrently interacts with CLEC5A in close proximity to form a multivalent hetero-complex and facilitate CLEC5A-mediated signal transduction...
2016: PloS One
https://www.readbyqxmd.com/read/27776644/hybrid-imaging-for-detection-of-carcinoma-of-unknown-primary-a-preliminary-comparison-trial-of-whole-body-pet-mri-versus-pet-ct
#4
Verena Ruhlmann, Marcus Ruhlmann, Alexander Bellendorf, Johannes Grueneisen, Lino M Sawicki, Hong Grafe, Michael Forsting, Andreas Bockisch, Lale Umutlu
PURPOSE: The aim of this study is to evaluate and compare the diagnostic potential of integrated whole-body [18F]FDG-PET/MRI to [18F]FDG-PET/CT for detection of a potential primary cancer and metastases in patients suspected for cancer of unknown primary (CUP). METHODS: A total of 20 patients (15 male, 5 female, age 53±13 years) suspect for CUP underwent a dedicated head and neck & whole-body [18F]FDG-PET/CT (Biograph mCT 128, Siemens Healthcare) and a subsequent simultaneous [18F]FDG-PET/MRI examination (Biograph mMR, Siemens Healthcare)...
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27738008/4d-mr-and-attenuation-map-generation-in-pet-mr-imaging-using-4d-pet-derived-deformation-matrices-a-feasibility-study-for-lung-cancer-applications
#5
Hadi Fayad, Holger Schmidt, Thomas Kuestner, Dimitris Visvikis
: Respiratory motion may reduce accuracy in fusion of functional and anatomical images using combined Positron emission tomography / Magnetic resonance (PET/MR) systems. Methodologies for the correction of respiratory motion in PET acquisitions using such systems are mostly based on the use of respiratory synchronized MR acquisitions to derive motion fields. Existing approaches based on tagging acquisitions may introduce artifacts in the MR images, while motion model approaches require the acquisition of training datasets...
October 13, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27736925/in-vivo-detection-and-tracking-of-t-cells-in-various-organs-in-a-melanoma-tumor-model-by-19f-fluorine-mrs-mri
#6
Christine Gonzales, Hikari A I Yoshihara, Nahzli Dilek, Julie Leignadier, Melita Irving, Pascal Mieville, Lothar Helm, Olivier Michielin, Juerg Schwitter
BACKGROUND: 19F-MRI and 19F-MRS can identify specific cell types after in-vitro or in-vivo 19F-labeling. Knowledge on the potential to track in-vitro 19F-labeled immune cells in tumor models by 19F-MRI/MRS is scarce. AIM: To study 19F-based MR techniques for in-vivo tracking of adoptively transferred immune cells after in-vitro 19F-labeling, i.e. to detect and monitor their migration non-invasively in melanoma-bearing mice. METHODS: Splenocytes (SP) were labeled in-vitro with a perfluorocarbon (PFC) and IV-injected into non-tumor bearing mice...
2016: PloS One
https://www.readbyqxmd.com/read/27732160/chronic-obstructive-pulmonary-disease-lobar-analysis-with-hyperpolarized-129-xe-mr-imaging
#7
Tahreema N Matin, Najib Rahman, Annabel H Nickol, Mitchell Chen, Xiaojun Xu, Neil J Stewart, Tom Doel, Vicente Grau, James M Wild, Fergus V Gleeson
Purpose To compare lobar ventilation and apparent diffusion coefficient (ADC) values obtained with hyperpolarized xenon 129 ((129)Xe) magnetic resonance (MR) imaging to quantitative computed tomography (CT) metrics on a lobar basis and pulmonary function test (PFT) results on a whole-lung basis in patients with chronic obstructive pulmonary disease (COPD). Materials and Methods The study was approved by the National Research Ethics Service Committee; written informed consent was obtained from all patients. Twenty-two patients with COPD (Global Initiative for Chronic Obstructive Lung Disease stage II-IV) underwent hyperpolarized (129)Xe MR imaging at 1...
October 12, 2016: Radiology
https://www.readbyqxmd.com/read/27720526/histological-examination-of-trousseau-syndrome-related-thrombus-retrieved-through-acute-endovascular-thrombectomy-report-of-2-cases
#8
Naoki Matsumoto, Hitoshi Fukuda, Akira Handa, Toshinari Kawasaki, Yoshitaka Kurosaki, Masaki Chin, Sen Yamagata
The mechanism of thrombus formation in Trousseau syndrome remains unclear. The purpose of this study was to investigate specific pathological findings of the thrombi in Trousseau syndrome. The authors report on 2 cases of thrombi in Trousseau syndrome from large cerebral vessels removed by endovascular therapy and compared with thrombi in atherosclerosis or cardiac embolism. The first patient, a 67-year-old man, was transferred to our hospital for sudden onset consciousness disturbance and tetraparesis. He had been diagnosed with stage IV lung cancer...
October 6, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27715657/self-gated-non-contrast-enhanced-functional-lung-mr-imaging-for-quantitative-ventilation-assessment-in-patients-with-cystic-fibrosis
#9
Simon Veldhoen, Andreas M Weng, Janine Knapp, Andreas S Kunz, Daniel Stäb, Clemens Wirth, Florian Segerer, Helge Hebestreit, Uwe Malzahn, Herbert Köstler, Thorsten A Bley
Purpose To assess the clinical feasibility of self-gated non-contrast-enhanced functional lung (SENCEFUL) magnetic resonance (MR) imaging for quantitative ventilation (QV) imaging in patients with cystic fibrosis (CF). Materials and Methods Twenty patients with CF and 20 matched healthy volunteers underwent functional 1.5-T lung MR imaging with the SENCEFUL imaging approach, in which a two-dimensional fast low-angle shot sequence is used with quasi-random sampling. The lungs were manually segmented on the ventilation-weighted images to obtain QV measurements, which were compared between groups...
October 6, 2016: Radiology
https://www.readbyqxmd.com/read/27713887/new-role-of-biomarkers-mid-regional-pro-adrenomedullin-the-biomarker-of-organ-failure
#10
Francisco Valenzuela-Sánchez, Blanca Valenzuela-Méndez, Juan Francisco Rodríguez-Gutiérrez, Ángel Estella-García, María Ángela González-García
Mid-regional pro-adrenomedullin (MR-proADM) has a good biomarker profile: its half-life is several hours, and its plasma concentrations can be determined in clinical practice, it is essentially irrelevant, but proportionally represents the levels and activity of adrenomedullin (ADM). ADM synthesis is widely distributed in tissues, including bone, adrenal cortex, kidney, lung, blood vessels and heart. Its fundamental biological effects include vasodilator, positive inotropic, diuretic, natriuretic and bronchodilator...
September 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27708193/role-of-spleen-derived-macrophages-in-ozone-induced-lung-inflammation-and-injury
#11
Mary Francis, Richard Sun, Jessica A Cervelli, Hyejeong Choi, Mili Mandal, Elena V Abramova, Andrew J Gow, Jeffrey D Laskin, Debra L Laskin
Macrophages and inflammatory mediators have been implicated in ozone toxicity. In these studies, we used splenectomized (SPX) mice to assess the contribution of splenic monocytes to pulmonary inflammation and injury induced by ozone. Cells and tissue were collected 24-72 h after exposure of mice to air or ozone (0.8 ppm, 3 h). Following ozone exposure, increased numbers of pro-inflammatory CD11b(+)Ly6C(Hi) and anti-inflammatory CD11b(+)Ly6C(Lo) monocytes were observed in spleens of control (CTL) mice. CD11b(+)Ly6C(Hi) and MMP-9(+) pro-inflammatory macrophages were also observed in lungs of CTL mice after ozone, along with CD11b(+)Ly6C(Lo) and mannose receptor (MR)(+) anti-inflammatory macrophages...
October 5, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/27707585/the-role-of-hyperpolarized-129-xenon-in-mr-imaging-of-pulmonary-function
#12
Lukas Ebner, Jeff Kammerman, Bastiaan Driehuys, Mark L Schiebler, Robert V Cadman, Sean B Fain
In the last two decades, functional imaging of the lungs using hyperpolarized noble gases has entered the clinical stage. Both helium ((3)He) and xenon ((129)Xe) gas have been thoroughly investigated for their ability to assess both the global and regional patterns of lung ventilation. With advances in polarizer technology and the current transition towards the widely available (129)Xe gas, this method is ready for translation to the clinic. Currently, hyperpolarized (HP) noble gas lung MRI is limited to selected academic institutions; yet, the promising results from initial clinical trials have drawn the attention of the pulmonary medicine community...
September 16, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27686542/-using-3-0-t-mr-to-dynamically-observe-ablated-lung-tumors-after-percutaneous-cryotherapy-therapy
#13
J Li, J R Qu, H K Zhang, J C Xiao, L N Jiang, Y Zhao, H L Li
Objective: To initially explore MRI features and its changing trends including of lung tumors after Argon-Helium cryoablation therapy, and enhance the recognition of MR findings of lung tumors postcryoablation. Methods: Twenty-three cases of patients with twenty six nodules of pulmonary malignance who received Argon-Helium cryoablation therapy in Henan Cancer Hospital from July 2014 to January 2016 were enrolled.All patients underwent unenhanced and dynamic contrast-enhanced MRI scans at pre-and 1-day, 1-week, 1-, 3-, 6-, 12-month postcryoablation...
September 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27682736/magnetic-resonance-imaging-of-osteosarcoma-using-a-bis-alendronate-based-bone-targeted-contrast-agent
#14
Pingju Ge, Fugeng Sheng, Yiguang Jin, Li Tong, Lina Du, Lei Zhang, Ning Tian, Gongjie Li
Magnetic resonance (MR) is currently used for diagnosis of osteosarcoma but not well even though contrast agents are administered. Here, we report a novel bone-targeted MR imaging contrast agent, Gd2-diethylenetriaminepentaacetate-bis(alendronate) (Gd2-DTPA-BA) for the diagnosis of osteosarcoma. It is the conjugate of a bone cell-seeking molecule (i.e., alendronate) and an MR imaging contrast agent (i.e., Gd-DTPA). Its physicochemical parameters were measured, including pKa, complex constant, and T1 relaxivity...
September 25, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27678106/feasibility-of-ferumoxytol-enhanced-neonatal-and-young-infant-cardiac-mri-without-general-anesthesia
#15
Lillian M Lai, Joseph Y Cheng, Marcus T Alley, Tao Zhang, Michael Lustig, Shreyas S Vasanawala
PURPOSE: To assess the feasibility of ferumoxytol-enhanced anesthesia-free cardiac MRI in neonates and young infants for complex congenital heart disease (CHD). MATERIALS AND METHODS: With Institutional Review Board approval, 21 consecutive neonates and young infants (1 day to 11 weeks old; median age of 3 days) who underwent a rapid two-sequence (MR angiography [MRA] and four-dimensional [4D] flow) MRI protocol with intravenous ferumoxytol without sedation (n = 17) or light sedation (n = 4) at 3 Tesla (T) (except one case at 1...
September 28, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27637724/functional-image-guided-radiotherapy-planning-for-normal-lung-avoidance
#16
R H Ireland, B A Tahir, J M Wild, C E Lee, M Q Hatton
For patients with lung cancer undergoing curative intent radiotherapy, functional lung imaging can be incorporated into treatment planning to modify the dose distribution within non-target volume lung by differentiation of lung regions that are functionally defective or viable. This concept of functional image-guided lung avoidance treatment planning has been investigated with several imaging modalities, primarily single photon emission computed tomography (SPECT), but also hyperpolarised gas magnetic resonance (MR) imaging, positron emission tomography (PET) and computed tomography (CT)-based measures of lung biomechanics...
November 2016: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/27637559/a-comparison-of-survival-by-site-of-metastatic-resection-in-metastatic-colorectal-cancer
#17
Richard Lee-Ying, Brandon Bernard, Gillian Gresham, Leo Chen, Caroline Speers, Hagen F Kennecke, Howard John Lim, Winson Y Cheung, Daniel John Renouf
BACKGROUND: Metastatic resection (MR) of liver-limited disease is an effective therapy for selected patients with metastatic colorectal cancer (mCRC). Despite limited data, this approach has been expanded to include MR of other sites, such as the lung, locoregional, and other distant disease (ODD). We performed a population-based study of patients with mCRC who had undergone MR and compared survival between MR of the liver and MR of other sites. METHODS: Patients with mCRC who were referred to the British Columbia Cancer Agency between 1995 and 2010 were reviewed...
August 9, 2016: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/27610750/enhancing-the-role-of-paediatric-ultrasound-with-microbubbles-a-review-of-intravenous-applications
#18
Vasileios Rafailidis, Annamaria Deganello, Tom Watson, Paul S Sidhu, Maria E Sellars
Contrast-enhanced Ultrasound (CEUS) represents a complementary technique to grey-scale and colour Doppler ultrasonography (US) which allows for real-time visualization and characterization of tissue perfusion. Its inherent advantages in the child makes US an ideal imaging modality; repeatability and good tolerance along with the avoidance of computed tomography (CT), a source of ionizing radiation, renders US imaging desirable. Although currently paediatric CEUS is principally used in an "off-label" manner, US contrast agents have received regulatory approval for assessment of paediatric focal liver lesions in the United States of America...
September 9, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27602772/c-myc-targeted-regulators-of-cell-metabolism-in-a-transgenic-mouse-model-of-papillary-lung-adenocarcinoma
#19
Yari Ciribilli, Prashant Singh, Alberto Inga, Jürgen Borlak
c-Myc's role in pulmonary cancer metabolism is uncertain. We therefore investigated c-Myc activity in papillary lung adenocarcinomas (PLAC). Genomics revealed 90 significantly regulated genes (> 3-fold) coding for cell growth, DNA metabolism, RNA processing and ribosomal biogenesis and bioinformatics defined c-Myc binding sites (TFBS) at > 95% of up-regulated genes. EMSA assays at 33 novel TFBS evidenced DNA binding activity and ChIP-seq data retrieved from public repositories confirmed these to be c-Myc bound...
September 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27596568/design-of-a-multimodal-1-h-23-na-mr-ct-anthropomorphic-thorax-phantom
#20
Wiebke Neumann, Florian Lietzmann, Lothar R Schad, Frank G Zöllner
OBJECTIVES: This work proposes a modular, anthropomorphic MR and CT thorax phantom that enables the comparison of experimental studies for quantitative evaluation of deformable, multimodal image registration algorithms and realistic multi-nuclear MR imaging techniques. METHODS: A human thorax phantom was developed with insertable modules representing lung, liver, ribs and additional tracking spheres. The quality of human tissue mimicking characteristics was evaluated for (1)H and (23)Na MR as well as CT imaging...
September 2, 2016: Zeitschrift Für Medizinische Physik
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