0000000000091116

AUTHOR

Belgrano M

showing 7 related works from this author

Valutazione quantitativa tridimensionale del parenchima polmonare affetto da fibrosi cistica : risultati preliminari

2007

Purpose. The aim of this study was to assess the feasibility of three-dimensional (3D) reconstructions and quantitative analysis of the volume of each component of the lung with cystic fibrosis (CF). Materials and methods. Twenty-two patients with CF (mean age 17±8 yeas) were included in the study. The patients underwent an unenhanced single-slice spiral computed tomography (CT) chest scan with the following parameters: collimation 3 mm, table feed 6 mm×rot-1, reconstruction interval 1 mm, soft tissue reconstruction kernel. Four image data sets were obtained: native axial slices, cine-mode display, virtual bronchographic volumerendered images with algorithm for tissue transition display and…

Cystic fibrosis CT densitometry Volume rendering three-dimensional Segmentation
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Introduction to coronary imaging with 64-slice computed tomography

2005

The aim of this article is to illustrate the main technical improvements in the last generation of 64-row CT scanners and the possible applications in coronary angiography. In particular, we describe the new physical components (X-ray tube-detectors system) and the general scan and reconstruction parameters. We then define the scan protocols for coronary angiography with the new generation of 64-row CT scanners to enable radiologists to perform a CT study on the basis of the diagnostic possibilities.

Time FactorsImaging Sensitivity and Specificity Stents Time Factors TomographyContrast MediaSensitivity and Specificity64-row CTElectrocardiographyHeart RateSpiral Computed TomographyImage Processing Computer-AssistedHumanstechnical improvementsCoronary Artery BypassPhantoms ImagingPatient SelectionAlgorithms Artifacts Contrast Media Coronary Angiography/instrumentation/*methods Coronary Artery Bypass Coronary Stenosis/*radiography Electrocardiography Heart Rate Humans Image Processing; Computer-Assisted Patient Selection Phantoms; Imaging Sensitivity and Specificity Stents Time Factors Tomography; Spiral Computed Tomography; X-Ray Computed/instrumentation/*methodsCoronary StenosisComputer-Assisted Patient Selection PhantomsX-Ray Computed/instrumentation/*methodstechnical improvements; 64-row CT; coronary angiographyComputer-Assisted Patient Selection PhantomStentsAlgorithms Artifacts Contrast Media Coronary Angiography/instrumentation/*methods Coronary Artery Bypass Coronary Stenosis/*radiography Electrocardiography Heart Rate Humans Image Processingcoronary angiographyArtifactsTomography X-Ray ComputedTomography Spiral ComputedAlgorithms
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Diagnostic accuracy of multislice computed tomography coronary angiography is improved at low heart rates

2005

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Influenza dei filtri di convoluzione sulla misurazione dei valori di attenuazione della placca durante angiografia coronarica mediante TC multistrato

2005

convolution kernel filtering
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DETECTION OF LIVER METASTASIS WITH CONTRAST ENHANCED ULTRASONOGRAPHY

2007

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Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography

2005

PURPOSE: To assess the variability in attenuation of coronary plaques with multislice CT-angiography (MSCT-CA) in an ex-vivo model with varying convolution kernels. MATERIALS AND METHODS: MSCT-CA (Sensation 16, Siemens) was performed in three ex-vivo left coronary arteries after instillation of contrast material solution (Iomeprol 400 mgI/ml, dilution: 1/80). The specimens were placed in oil to simulate epicardial fat. Scan parameters: slices 16/0.75 mm, rotation time 375 ms, feed/rotation 3.0 mm, mAs 500, slice thickness 1 mm, and FOV 50 mm. Datasets were reconstructed using 4 different kernels (B30f-smooth, B36f-medium smooth, B46f-medium, and B60f-sharp). Each scan was scored for the pre…

MaleHistological TechniquesCoronary Artery DiseaseMiddle Agedconvolution kernel filteringCoronary AngiographyCoronary VesselsRisk AssessmentData Interpretation StatisticalHumansFemaleAutopsyTomography X-Ray ComputedAged
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Impact of intravascular enhancement, heart rate, and calcium score on diagnostic accuracy in multislice computed tomography coronary angiography.

2005

PURPOSE: To assess the effect of intravascular enhancement, heart rate, and calcium score on diagnostic accuracy in the detection of significant coronary artery stenosis using 16-row multislice computed tomography (MSCT). MATERIALS AND METHODS: One hundred patients (88 males; 59+/-11 years) with suspected coronary artery disease who had undergone conventional coronary angiography (CA) and MSCT-CA were retrospectively enrolled for the study. Patients underwent a MSCT-CA, with the following protocol: collimation 16x0.75 mm, gantry rotation time 420 ms, feed/rotation 2.8 mm, kV 120, mAs 400-500. The protocol for contrast material administration was 100 ml of Iodixanol 320 mgI/ml at 4 ml/s and …

MaleStatistical Female *Heart Rate Humans Male Middle Aged Retrospective Studies Sensitivity and Specificity TomographyContrast MediaCoronary DiseaseCoronary Artery DiseaseCoronary AngiographySensitivity and SpecificityHeart RateTriiodobenzoic AcidsHumanscoronary artery stenosisAgedRetrospective StudiesBody WeightCoronary StenosisCalcinosisMiddle AgedAged Artifacts Body Weight Calcinosis/*radiography Contrast Media Coronary Angiography/*methods Coronary Artery Disease/radiography Coronary Disease/*radiography Coronary Stenosis/radiography Data Interpretation; Statistical Female *Heart Rate Humans Male Middle Aged Retrospective Studies Sensitivity and Specificity Tomography; X-Ray Computed/*methods Triiodobenzoic Acids/administration & dosage/diagnostic useX-Ray Computed/*methods Triiodobenzoic Acids/administration & dosage/diagnostic useData Interpretation StatisticalAged Artifacts Body Weight Calcinosis/*radiography Contrast Media Coronary Angiography/*methods Coronary Artery Disease/radiography Coronary Disease/*radiography Coronary Stenosis/radiography Data InterpretationFemalemultislice computed tomography (MSCT)ArtifactsTomography X-Ray Computedcoronary artery stenosis; multislice computed tomography (MSCT)
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