Search results for " ct"

showing 10 items of 306 documents

Intravenous Contrast Agent in Abdominal CT: Is It Really Needed to Identify the Cause of Bowel Obstruction? Proof of Concept

2019

Background. To compare sensitivity of unenhanced computed tomography (CT) and contrast-enhanced CT for the identification of the etiology of bowel obstruction.Materials and Methods. We retrospectively evaluated abdominal CT scans of patients operated for bowel obstruction from March 2013 to October 2017. Two radiologists evaluated CT scans before and after contrast agent in two reading sessions. Then, we calculated sensitivity of CT in the diagnosis of bowel obstruction and determined in which cases the etiology of bowel obstruction was detected on both unenhanced and enhanced CT or on enhanced CT only. The reference standard was defined as the final diagnosis obtained after surgery.Results…

Intravenous contrastmedicine.medical_specialtyArticle SubjectHepatologyEnhanced ctbusiness.industryAbdominal ctGastroenterologymedicine.disease030218 nuclear medicine & medical imaging3. Good healthLarge bowel obstructionBowel obstruction03 medical and health sciences0302 clinical medicine030220 oncology & carcinogenesisEtiologyMedicinelcsh:Diseases of the digestive system. GastroenterologyRadiologyThickeninglcsh:RC799-869businessResearch ArticleBowel wallGastroenterology Research and Practice
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Diagnosis and therapeutic management of primary headache in an emergency setting

2013

Introduction and aim: Much headachers are under or mis-diagnoses and data regarding the proportion of patients attending an emergency department (ED) because of headache are still few. We conducted a retrospective observational study in an ED with the following aims: (a) estimate the proportion of headache attending to an ED (b) to estimate and describe the therapeutic management of primary headache and (c) to assessment the exam most frequently requested. Materials and methods: We collected data regarding patients diagnosed with headache consecutively attending the ED of the University of Palermo between September 2011 and March 2012. The study was approved by the ethics committee. Results: Between the semester evaluated 25110 subjects were admitted to ED headache suffers were equal to 1.6 %. Of these 263 (63.1 %) were woman and 154 (36.9 %). Mean age was 44.2 (DS ± 18.4) years (p = 0.068).According to ED registry headache admission was as follow assigned: 76.5 % with a diagnosis of headache 22.8 % with a secondary headache 0.7 % with Trigeminal Autonomic Cephalgias (TACs). Among those with a primary headache about 36 % of patient did not received a pharmacological treatment. Monotherapy was prescribed less frequently than combination therapy (19.1 vs 44.5 %).In monotherapy the most frequent medication were NSAIDs (28.3 %) benzodiazepines (26.7 %) and dopamine antagonists (11.7 %). Among those with a primary headache a CT scan was performed in the 124 subjects and 111 (34.8 %) had a neurologist consultation. Discussion: Our data are in line with the one previously reported in literature. The most frequently medication in the Italian ED were NSAIDs benzodiazepines dopamine antagonists and steroids. Neverless our data unlikely can be compared to other study give a snapshot. We believe that much more can be done to improve treatment of primary headache in ED.Settore MED/26 - Neurologia
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Ischemic Heart Disease, CT

2008

Ischemic Heart Disease CTSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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Enseñanza de la Mecánica con enfoque Ciencia Tecnología y Sociedad utilizando los Accidentes de Tránsito

2020

Taking into account the disinterest of the students in secondary and university education towards physics, this communication proposes a teaching form, based on the approach, science, technology and society (STS) that develops from the disciplinary interaction of the physics with forensic science. Based on the above, a didactic unit was designed that articulates physical concepts to contextual elements of traffic accidents. This is applied to two groups of students from teacher training programs in Natural Sciences and Mathematics. To evaluate it, a pre-post design is used. In the comparison of these two tests, important contributions are found in understanding the mechanical phenomena in t…

LC8-6691LA5-2396física forenseComputingMilieux_COMPUTERSANDEDUCATIONHistory of educationeducación en CTSEducation (General)Theory and practice of educationL7-991Special aspects of educationLB5-3640accidentes de tránsitoIndagatio Didactica
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E26The effects of LIPUS on ctDNA release in the medium of NSCLC cell lines

2017

Low Intensity Pulsed Ultrasound (LIPUS) application has been shown to have an encouraging effect in inducing a transient pore formation through cellular membranes. This permeability condition has been demonstrated to be useful in enhancing gene and drug delivery. Nowadays, in the management of NSCLC patients, the use of liquid biopsy has entered the clinical practice. One of the main limits in the analysis of circulating tumor DNA is the low concentration rate of nucleic acids in body fluids. Ultrasound stimulation (US) has been recently demonstrated to be effective for the release of specific circulating tumor biomarkers in many mouse models. We demonstrated the role of US in inducing the …

LIPUS ctDNA NSCLC cell lines
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Differential expression levels of urokinase-type plasminogen activator and cathepsin D in locally advanced laryngeal squamous cell carcinoma: Clinica…

2002

The expression levels and the prognostic impact of urokinase-type plasminogen activator (uPA) and cathepsin D (CD) were evaluated in patients with locally advanced laryngeal squamous cell carcinoma (LSCC). uPA and CD protein levels were determined by immunoluminometric or immunoenzymatic assays in the cytosol of paired sets of tumor tissues and corresponding adjacent normal mucosa (NLM) from 57 patients with stage III/IV LSCC and were correlated with a number of clinicobiological parameters of this tumor including anatomical site, tumor grade, nodal status, clinical stage, DNA ploidy, proliferation rate, and patient outcome. Median uPA levels were significantly higher in LSCC than in NLM (…

LarynxMaleCancer ResearchPathologymedicine.medical_specialtyClinical BiochemistryCathepsin D030204 cardiovascular system & hematologyBiologyPremisesLysosomal proteinaseCathepsin DPathology and Forensic Medicine03 medical and health sciences0302 clinical medicinemedicineBiomarkers TumorHumansLaryngeal carcinomaStage (cooking)030223 otorhinolaryngologyLaryngeal NeoplasmsAgedchemistry.chemical_classificationUrokinaseMiddle AgedUrokinase-Type Plasminogen Activatormedicine.anatomical_structureEnzymeOncologyEpidermoid carcinomachemistryTumor markers Urokinase-type plasminogena ctivatorMultivariate AnalysisCarcinoma Squamous CellFemalePlasminogen activatorSerine proteinasemedicine.drug
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Hepatocellular Carcinoma Presenting at Contrast-Enhanced Multi–Detector-Row Computed Tomography or Gadolinium-Enhanced Magnetic Resonance Imaging as …

2012

OBJECTIVE: The objective of the study was to measure growth rate and to determine the optimal interval time for imaging follow-up of hepatocellular carcinomas (HCCs) presenting at multi-detector-row computed tomography (MDCT) or magnetic resonance imaging (MRI) as small, indeterminate lesions. METHODS: We included patients with cirrhosis with HCC initially presenting as indeterminate lesion of 2 cm or less at MDCT or MRI August 2005 to August 2009 and with available imaging follow-up. Measures of tumor growth included tumor volume doubling time (TVDT), tumor percentual diameter increase, and tumor percentual volume increase. RESULTS: We examined 48 patients (mean age, 64 years) with 69 HCCs…

Liver CirrhosisMalemedicine.medical_specialtyCarcinoma HepatocellularTime FactorsCirrhosisGadoliniumVolume Doubling TimeContrast Mediahepatocellular carcinomaschemistry.chemical_elementStatistics NonparametricLesionImage Interpretation Computer-AssistedmedicineHumansRadiology Nuclear Medicine and imagingAgedRetrospective StudiesAged 80 and overmedicine.diagnostic_testbusiness.industryLiver NeoplasmsNodule (medicine)Magnetic resonance imagingMiddle Agedmedicine.diseaseMagnetic Resonance ImagingchemistryHepatocellular carcinomaDisease ProgressionFemaleRadiologymedicine.symptomTomography X-Ray ComputedIndeterminatebusinessNuclear medicinefollow-up; small hepatocellular carcinoma; mri; ctJournal of Computer Assisted Tomography
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Morphologic changes of the liver: how to recognize and analyze at CT and MRI

2008

Liver morphology CT MRICT MR liver
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Reevaluating the function of a transcription factor: MBF-1 as a sea urchin chromatin organizer ?

2014

The Zinc-finger MBF-1 factor is involved in the expression of the early histone genes during devel-opment of the sea urchin embryo (1, 2). In spite of being a transcription activator, the DNA-binding domain of MBF-1 shares high sequence similarity with that of the chromatin organizer CTCF of vertebrates and drosophila (3). On the other hand, extensive in silico analysis failed to identify the sea urchin CTCF ortholog (4). This led us to speculate that MBF-1 somehow could have co-opted the function of CTCF during evolution of the echinoderms. Since in vertebrates CTCF binds Hox chromatin, to support our hypothesis, we first identified high-score putative binding sequences for CTCF/MBF-1 with…

MBF-1 activator; CTCF; Hox genes; chromatin immunoprecipitationSettore BIO/11 - Biologia Molecolarechromatin immunoprecipitationCTCFMBF-1 activatorHox gene
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Evaluación mediante micro CT de la eficacia del retratamiento de los conductos radiculares utilizando el microscopio clínico y los instrumentos ultra…

2018

El objetivo de este estudio fue comparar la eficacia y el tiempo de las técnicas, rotativas, manuales y recíprocas para eliminar el material de la obturación de los conductos radiculares, utilizando imágenes de microtomografía computarizada. Materiales y métodos: 99 diente humanos unirradiculares con conductos ovales, fueron instrumentados con el Sistema ProTaper Gold hasta la lima F2 según la técnica de crown-down y obturados con puntas de Gutacore Nº25 y sellador AH Plus. Las muestras se dividieron al azar en tres grupos de 33 dientes de cada uno. Después, los conductos radiculares fueron desobturados con limas de ProTaper R; Grupo 1, limas manuales de Hedstroem #25 y #30 y #35 con fresas…

MICRO CTUNESCO::CIENCIAS MÉDICASRETRATAMIENTO DE CONDUCTO RADICULARHEDSTROEMRECIPROC BLUEPROTAPER R:CIENCIAS MÉDICAS [UNESCO]
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