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Images in Clinical Medicine

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https://www.readbyqxmd.com/read/29471100/dynamic-fmri-networks-predict-success-in-a-behavioral-weight-loss-program-among-older-adults
#1
Fatemeh Mokhtari, W Jack Rejeski, Yingying Zhu, Guorong Wu, Sean L Simpson, Jonathan H Burdette, Paul J Laurienti
More than one-third of adults in the United States are obese, with a higher prevalence among older adults. Obesity among older adults is a major cause of physical dysfunction, hypertension, diabetes, and coronary heart diseases. Many people who engage in lifestyle weight loss interventions fail to reach targeted goals for weight loss, and most will regain what was lost within 1-2 years following cessation of treatment. This variability in treatment efficacy suggests that there are important phenotypes predictive of success with intentional weight loss that could lead to tailored treatment regimen, an idea that is consistent with the concept of precision-based medicine...
February 19, 2018: NeuroImage
https://www.readbyqxmd.com/read/29470968/multiple-sclerosis-mechanisms-and-immunotherapy
#2
REVIEW
Clare Baecher-Allan, Belinda J Kaskow, Howard L Weiner
Multiple sclerosis (MS) is an autoimmune disease triggered by environmental factors that act on a genetically susceptible host. It features three clinical stages: a pre-clinical stage detectable only by MRI; a relapsing-remitting (RRMS) stage characterized by episodes of neurologic dysfunction followed by resolution; and a progressive stage, which usually evolves from the relapsing stage. Advances in our understanding of the immune mechanisms that contribute to MS have led to more than ten FDA-approved immunotherapeutic drugs that target effector T cells, regulatory cells, B cells, and cell trafficking into the nervous system...
February 21, 2018: Neuron
https://www.readbyqxmd.com/read/29466947/stroke-as-an-atypical-initial-presentation-of-giant-cell-arteritis
#3
Tharsika Kuganesan, Allen R Huang
BACKGROUND: Giant cell arteritis (GCA) is an immune mediated inflammatory disease of medium and large arteries which afflicts older people. The classical presentation features include: headache, visual disturbances, and jaw claudication. Patients diagnosed with GCA have also been observed to be at higher risk for the subsequent development of strokes. CASE PRESENTATION: We describe a case of an 84-year old right-handed man who presented to hospital with dysarthria, dysphagia, right-sided facial drop, a history of generalized weakness and multiple falls...
February 21, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29465429/advances-in-prostate-specific-membrane-antigen-pet-of-prostate-cancer
#4
Kirsten Bouchelouche, Peter L Choyke
PURPOSE OF REVIEW: In recent years, a large number of reports have been published on prostate-specific membrane antigen (PSMA)/PET in prostate cancer (PCa). This review highlights advances in PSMA PET in PCa during the past year. RECENT FINDINGS: PSMA PET/computed tomography (CT) is useful in detection of biochemical recurrence, especially at low prostate-specific antigen (PSA) values. The detection rate of PSMA PET is influenced by PSA level. For primary PCa, PSMA PET/CT shows promise for tumour localization in the prostate, especially in combination with multiparametric MRI (mpMRI)...
February 19, 2018: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29464520/infrared-spectroscopy-and-imaging-in-stem-cells-and-aging-research
#5
Ceren Aksoy, Feride Severcan
The effect of aging process on stem cell function is crucial because of their critical role in tissue regeneration and repair. The impact of aging on stem cells needs to be understood clearly for the success of clinical application and obtaining desired therapeutic outcome throughout the novel stem cell based therapies. The existing methods used to monitor and characterize the stem cells have some unwanted effects on the properties of stem cells and these methods also do not provide real-time information about cellular conditions...
February 21, 2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29463557/the-airway-transcriptome-as-a-biomarker-for-early-lung-cancer-detection
#6
Ehab Billatos, Jessica L Vick, Marc E Lenburg, Avrum E Spira
Lung cancer remains the leading cause of cancer-related death due to its advanced stage at diagnosis. Early detection of lung cancer can be improved by better defining who should be screened radiographically, and determining which imaging-detected pulmonary nodules are malignant. Gene expression biomarkers measured in normal-appearing airway epithelium provide an opportunity to use lung cancer associated molecular changes in this tissue for early detection of lung cancer. Molecular changes in the airway may result from an etiologic field of injury and/or field cancerization...
February 20, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29463310/the-practice-of-intensive-care-in-latin-america-a-survey-of-academic-intensivists
#7
Ricardo Castro, Nicolas Nin, Fernando Ríos, Leyla Alegría, Elisa Estenssoro, Gastón Murias, Gilberto Friedman, Manuel Jibaja, Gustavo Ospina-Tascon, Javier Hurtado, María Del Carmen Marín, Flavia R Machado, Alexandre Biasi Cavalcanti, Arnaldo Dubin, Luciano Azevedo, Maurizio Cecconi, Jan Bakker, Glenn Hernandez
BACKGROUND: Intensive care medicine is a relatively young discipline that has rapidly grown into a full-fledged medical subspecialty. Intensivists are responsible for managing an ever-increasing number of patients with complex, life-threatening diseases. Several factors may influence their performance, including age, training, experience, workload, and socioeconomic context. The aim of this study was to examine individual- and work-related aspects of the Latin American intensivist workforce, mainly with academic appointments, which might influence the quality of care provided...
February 21, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29460442/fluorescent-nanodiamond-bacteriophage-conjugates-maintain-host-specificity
#8
Jimmy T Trinh, Masfer H Alkahtani, Isaac Rampersaud, Arfaan Rampersaud, Marlan Scully, Ryland F Young, Philip Hemmer, Lanying Zeng
Rapid identification of specific bacterial strains within clinical, environmental, and food samples can facilitate the prevention and treatment of disease. Fluorescent nanodiamonds (FNDs) are being developed as biomarkers in biology and medicine, due to their excellent imaging properties, ability to accept surface modifications, and lack of toxicity. Bacteriophages, the viruses of bacteria, can have exquisite specificity for certain hosts. We propose to exploit the properties of FNDs and phages to develop phages conjugated with FNDs as long-lived fluorescent diagnostic reagents...
February 20, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29460190/quantitative-analysis-of-phantom-studies-of-111-in-and-68-ga-imaging-of-neuroendocrine-tumours
#9
L Jönsson, A Stenvall, E Mattsson, E Larsson, A Sundlöv, T Ohlsson, C Hindorf
BACKGROUND: Nuclear medicine imaging of neuroendocrine tumours is performed either by SPECT/CT imaging, using111 In-octreotide or by PET/CT imaging using68 Ga-radiolabelled somatostatin analogs. These imaging techniques will give different image quality and different detection thresholds for tumours, depending on size and activity uptake. The aim was to evaluate the image quality for111 In-SPECT and68 Ga-PET imaging, i.e. the smallest volume possible to visualize for different source-to-background activity ratios...
February 20, 2018: EJNMMI Physics
https://www.readbyqxmd.com/read/29458122/regional-variations-of-cortical-bone-in-the-humeral-head-region-a-preliminary-study
#10
Yeming Wang, Jian Li, Jianhua Yang, Jingming Dong
BACKGROUND: Incidence of proximal humeral fractures dramatically increased over the last decade due to demographic changes. The goal of this study was to analyze regional characteristics of cortical bone in the humeral head region using cortical bone mapping (CBM) technique. METHODS: The proximal humerus of 103 healthy volunteers was imaged by clinical computed tomography (CT) scans. Three groups of volunteers were identified according to age: group A (20-39 years), group B (40-59 years), and group C (>60 years)...
February 16, 2018: Bone
https://www.readbyqxmd.com/read/29457147/a-scoping-review-of-health-outcomes-examined-in-randomized-controlled-trials-using-guided-imagery
#11
Peter R Giacobbi, Jonathan Stewart, Keeley Chaffee, Anna-Marie Jaeschke, Meagan Stabler, George A Kelley
Introduction: Guided imagery involves the controlled visualization of detailed mental images. This integrative health technique is used for healing, health maintenance, or the treatment of specific conditions. Guided imagery is an integral part of mindfulness meditation, hypnosis, and various relaxation exercises. However, evidence to support the widespread use and dissemination of guided imagery interventions has been lacking. The purposes of this scoping review were to document the scope of health outcomes and disease processes examined by guided imagery researchers and the journal outlets where this work has been published...
December 2017: Progress in Preventive Medicine
https://www.readbyqxmd.com/read/29456510/sodium-tanshinone-ii-a-sulfonate-ds-201-induces-vasorelaxation-of-rat-mesenteric-arteries-via-inhibition-of-l-type-ca-2-channel
#12
Xiao-Dong Zhang, Chun-Xia He, Jun Cheng, Jing Wen, Peng-Yun Li, Na Wang, Guang Li, Xiao-Rong Zeng, Ji-Min Cao, Yan Yang
Background: We previously have proved that sodium tanshinone II-A sulfonate (DS-201), a derivative of traditional Chinese medicinal herb Danshen (Salvia miltiorrhiza), is an opener and vasodilator of BKCa channel in the vascular smooth muscle cells (VSMCs). Vascular tension is closely associated with Ca2+ dynamics and activation of BKCa channel may not be the sole mechanism for the relaxation of the vascular tension by DS-201. Therefore, we hypothesized that the vasorelaxing effect of DS-20 may be also related to Ca2+ channel and cytoplasmic Ca2+ level in the VSMCs...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29453808/three-dimensional-printing-in-congenital-heart-disease-a-systematic-review
#13
REVIEW
Ivan Lau, Zhonghua Sun
Three-dimensional (3D) printing has shown great promise in medicine with increasing reports in congenital heart disease (CHD). This systematic review aims to analyse the main clinical applications and accuracy of 3D printing in CHD, as well as to provide an overview of the software tools, time and costs associated with the generation of 3D printed heart models. A search of different databases was conducted to identify studies investigating the application of 3D printing in CHD. Studies based on patient's medical imaging datasets were included for analysis, while reports on in vitro phantom or review articles were excluded from the analysis...
February 17, 2018: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/29452620/pathogen-specific-bacterial-imaging-in-nuclear-medicine
#14
REVIEW
Alvaro A Ordonez, Sanjay K Jain
When serious infections are suspected, patients are often treated empirically with broad-spectrum antibiotics while awaiting results that provide information on the bacterial class and species causing the infection, as well as drug susceptibilities. For deep-seated infections, these traditional diagnostic techniques often rely on tissue biopsies to obtain clinical samples which can be expensive, dangerous, and has the potential of sampling bias. Moreover, these procedures and results can take several days and may not always provide reliable information...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29451507/-appropriateness-in-cardiology-a-statement-of-the-anmco-veneto-region
#15
Guerrino Zuin, Gianfranco Frigo, Loris Roncon, Aldo Bonso, Emanuele Carbonieri, Fabio Chirillo, Fabio De Conti, Pietro Delise, Alessandro Desideri, Daniele D'Este, Loredano Milani, Roberto Valle, Claudio Bilato
Inappropriate tests are responsible for longer waiting lists, higher economical costs for the National Health System and major clinical risks due to radiation exposure from prescription abuse of diagnostic testing. Clinical inappropriateness frequently derives from poor knowledge of guidelines, "defensive medicine" approach and/or repeat requests of patients and family members. About one third of non-invasive imaging tests are considered inappropriate.In order to define the most appropriate instruments for the follow-up of the most common cardiovascular diseases with the highest risk of inappropriateness, all the cardiologists of the Veneto Region (Italy), along with the local chapters of the main national cardiology societies and general practitioners have been involved by the Regional Section of the Italian Association of Hospital Cardiologists (ANMCO) in several scientific meetings on the following topics: hypertension, chronic ischemic heart disease, valvular heart disease, heart failure, and atrial fibrillation...
January 2018: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29450799/iron-oxide-labeling-does-not-affect-differentiation-potential-of-human-bone-marrow-mesenchymal-stem-cells-exhibited-by-their-differentiation-into-cardiac-and-neuronal-cells
#16
Sujata Mohanty, Krishan Gopal Jain, Sushmita Bose Nandy, Anupama Kakkar, Manoj Kumar, Amit Kumar Dinda, Harpal Singh, Alok Ray
Mesenchymal stem cells (MSCs) have shown promising outcomes in cardiac and neuronal diseases. Efficient and noninvasive tracking of MSCs is essential to harness their therapeutic potential. Iron oxide nanoparticles (IONPs) have emerged as effective means to label stem cells and visualize them using magnetic resonance imaging (MRI). It is known that IONPs do not affect viability and cell proliferation of stem cells. However, very few studies have demonstrated differentiation potential of iron oxide-labeled MSCs and their differentiation into specific lineages that can contribute to cellular therapies...
February 15, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29449445/evaluation-of-penalized-likelihood-estimation-reconstruction-on-a-digital-time-of-flight-pet-ct-scanner-for-18-f-fdg-whole-body-examinations
#17
Elin Lindström, Anders Sundin, Carlos Trampal, Lars Lindsjö, Ezgi Ilan, Torsten Danfors, Gunnar Antoni, Jens Sörensen, Mark Lubberink
Resolution and quantitative accuracy of positron emission tomography (PET) are highly influenced by the reconstruction method. Penalized likelihood estimation algorithms allow for fully convergent iterative reconstruction, generating a higher image contrast while limiting noise compared to ordered subsets expectation maximization (OSEM). In this study, block-sequential regularized expectation maximization (BSREM) was compared to time-of-flight OSEM (TOF-OSEM). Various strengths of noise penalization factor β were tested along with scan durations and transaxial field of views (FOVs) with the aim to evaluate the performance and clinical use of BSREM for 18 F-FDG-PET-computed tomography (CT), both in quantitative terms and in a qualitative visual evaluation...
February 15, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29449411/molecular-imaging-in-drug-discovery-and-development
#18
Jonathan R Lindner, Jeanne Link
Noninvasive imaging has played an increasing role in the process of cardiovascular drug development. This review focuses specifically on the use of molecular imaging, which has been increasingly applied to improve and accelerate certain preclinical steps in drug development, including the identification of appropriate therapeutic targets, evaluation of on-target and off-target effects of candidate therapies, assessment of dose response, and the evaluation of drug or biological biodistribution and pharmacodynamics...
February 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29449275/circulating-tumor-dna-reveals-genetics-clonal-evolution-and-residual-disease-in-classical-hodgkin-lymphoma
#19
Valeria Spina, Alessio Bruscaggin, Annarosa Cuccaro, Maurizio Martini, Martina Di Trani, Gabriela Forestieri, Martina Manzoni, Adalgisa Condoluci, Alberto Arribas, Lodovico Terzi-Di-Bergamo, Silvia Laura Locatelli, Elisa Cupelli, Luca Ceriani, Alden A Moccia, Anastasios Stathis, Luca Nassi, Clara Deambrogi, Fary Diop, Francesca Guidetti, Alessandra Cocomazzi, Salvatore Annunziata, Vittoria Rufini, Alessandro Giordano, Antonino Neri, Renzo Boldorini, Bernhard Gerber, Francesco Bertoni, Michele Ghielmini, Georg Stüssi, Armando Santoro, Franco Cavalli, Emanuele Zucca, Luigi Maria Larocca, Gianluca Gaidano, Stefan Hohaus, Carmelo Carlo-Stella, Davide Rossi
The rarity of neoplastic cells in the biopsy imposes major technical hurdles that have so far limited genomic studies in classical Hodgkin lymphoma (cHL). By using a highly sensitive and robust deep-next-generation-sequencing approach for circulating tumor DNA (ctDNA), here we aimed at tracking the genetics of cHL in different clinical phases, and its modifications upon treatment. The analysis was based on specimens collected from 80 newly diagnosed and 32 refractory cHL patients, including longitudinal samples collected under ABVD chemotherapy and longitudinal samples from relapsing patients treated with chemotherapy and immunotherapy...
February 15, 2018: Blood
https://www.readbyqxmd.com/read/29447720/no-257-ultrasonographic-cervical-length-assessment-in-predicting-preterm-birth-in-singleton-pregnancies
#20
Kenneth Lim, Kimberly Butt, Joan M Crane
OBJECTIVES: To review (1) the use of ultrasonographic-derived cervical length measurement in predicting preterm birth and (2) interventions associated with a short cervical length. OUTCOMES: Reduction in rates of prematurity and/or better identification of those at risk, as well as possible prevention of unnecessary interventions. EVIDENCE: Published literature was retrieved through searches of PubMed and The Cochrane Library up to December 2009, using appropriate controlled vocabulary and key words (preterm labour, ultrasound, cervix, incompetent cervix, transvaginal, transperineal, cervical length, fibronectin)...
February 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
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