0000000001247900

AUTHOR

Krestin Gp

showing 12 related works from this author

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
researchProduct

Physiopathology of the aging heart

2008

Heart Coronary artery disease Computed tomography Magnetic resonance imagingSettore MED/36 - Diagnostica Per Immagini E Radioterapia
researchProduct

CORONARY VARIANTS AND ANOMALIES : METHODOLOGY OF VISUALISATION WITH 64-SLICE CT AND PREVALENCE IN 202 CONSECUTIVE PATIENTS

2007

researchProduct

64-slice computed tomography assessment of left ventricular volumetric and functional parameters

2006

CT Coronary Angiography left ventricular functionSettore MED/36 - Diagnostica Per Immagini E Radioterapia
researchProduct

Influence of intracoronary attenuation on coronary plaque measurements using multislice computed tomogarphy : observation in an ex vivo model of coro…

2005

researchProduct

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

2005

convolution kernel filtering
researchProduct

INFLUENCE OF INTRA-CORONARY ENHANCEMENT ON DIAGNOSTIC ACCURACY WITH 64-SLICE CT CORONARY ANGIOGRAPHY

2008

We assessed the effect of intra-coronary attenuation on diagnostic accuracy using 64-slice computed tomography coronary angiography (CT-CA). We enrolled 170 patients with suspected coronary artery disease who underwent conventional coronary angiography (CA) and 64-slice CT-CA (100 ml of Iomeprol 400 mg I/ml at 4 ml/s). The study population was divided into two groups (85 patients each based on median attenuation of 326 HU) based on mean arterial attenuation; group 1 with low attenuation and group 2 with high attenuation. Diagnostic accuracy for the detection of significant coronary artery stenosis was determined for both groups using CA as reference standard. Overall, 163 significant stenos…

Coronary artery disease . Coronary angiography . Multislice computed tomography . Iodine concentration . Diagnostic accuracySettore MED/36 - Diagnostica Per Immagini E Radioterapia
researchProduct

Diagnostic accuracy of 16-row multislice CT angiography in the evaluation of coronary segments

2005

researchProduct

Diagnostic accuracy of multislice computed tomography coronary angiography is improved at low heart rates

2005

researchProduct

Non-invasive evaluation of coronary calcium.

2005

researchProduct

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
researchProduct

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)
researchProduct