Search results for "multidetector computed tomography"

showing 10 items of 36 documents

Imaging of inner ear malformations: a primer for radiologists

2021

AbstractIn the multidisciplinary management of patients with inner ear malformations (IEMs), the correct diagnosis makes the differences in terms of clinical and surgical treatment. The complex anatomical landscape of the inner ear, comprising several small structures, makes imaging of this region particularly challenging for general radiologists. Imaging techniques are important for identifying the presence and defining the type of IEM and the cochlear nerve condition. High-resolution magnetic resonance imaging (MRI) sequences and high-resolution computed tomography (HRCT) are the mainstay imaging techniques in this area. Dedicated MRI and HRCT protocols play an important role in the diagn…

medicine.medical_specialtyTreatment outcome030218 nuclear medicine & medical imagingInner ear malformations03 medical and health sciencesComputed Tomography0302 clinical medicineMagnetic resonance imagingMultidetector Computed TomographymedicineHumansRadiology Nuclear Medicine and imagingInner earSurgical treatmentNeuroradiologymedicine.diagnostic_testbusiness.industryCochlear nerveSettore MED/37 - NeuroradiologiaMagnetic resonance imagingInterventional radiologyInner ear malformationGeneral Medicinemedicine.diseaseSensorineural hearing lossmedicine.anatomical_structureEar InnerSensorineural hearing losssense organsRadiologyTomography X-Ray ComputedbusinessSettore MED/36 - Diagnostica Per Immagini E Radioterapia030217 neurology & neurosurgery
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Imaging of Gastrointestinal Stromal Tumors: From Diagnosis to Evaluation of Therapeutic Response

2016

Once considered an obscure tumor entity with poor prognosis, gastrointestinal stromal tumors (GISTs) are nowadays recognized as the most common mesenchymal tumors of the alimentary tract. GISTs differ from other mesenchymal neoplasms at pathology since 90% of them exhibit strong immunohistochemical staining for KIT, a tyrosinase kinase growth factor receptor. In the early 2000s, the ability of imatinib mesylate, a tyrosine kinase inhibitor, to inhibit KIT established a new paradigm for cancer treatment. A reduction in lesion size may not be observed or may appear many months after therapy; thus, tumor response criteria alternative to the Response Evaluation Criteria in Solid Tumors were dev…

Gastrointestinal Stromal Tumorsdiagnostic imagingreviewResponse Evaluation Criteria in Solid Tumormultidetector computed tomographyDiagnosis DifferentialPositron-Emission TomographyHumansmagnetic resonance imagingGastrointestinal stromal tumorTomography X-Ray ComputedSettore MED/36 - Diagnostica Per Immagini E RadioterapiaGastrointestinal NeoplasmsNeoplasm Staging
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Imaging findings of hepatic focal nodular hyperplasia in men and women: are they really different?

2014

Purpose This study was undertaken to compare the imaging findings of focal nodular hyperplasia (FNH) in men and women, as seen on multidetector computed tomography (MDCT), magnetic resonance imaging (MRI) and contrast-enhanced ultrasound (CEUS). Materials and methods Two radiologists reviewed 195 imaging studies (17 MDCT, 81 MRI and 97 CEUS examinations) pertaining to 111 FNHs (mean size 3 cm) in 91 patients (mean age 39 years). For each lesion, the readers assessed size, location, echogenicity, attenuation, or signal intensity in comparison with adjacent liver parenchyma on both unenhanced and postcontrast images. Results Eighty-nine FNHs (mean size 3.1 cm) were observed in 73 women (mean …

AdultMalemedicine.medical_specialtySulfur HexafluorideContrast MediaSettore MED/01 - Statistica MedicaMeglumineSex FactorsSex factorsMultidetector computed tomographyMultidetector Computed TomographyOrganometallic CompoundsMedicineHumansRadiology Nuclear Medicine and imagingcardiovascular diseasesPhospholipidsNeuroradiologyAgedmedicine.diagnostic_testbusiness.industryUltrasoundFocal nodular hyperplasiaMagnetic resonance imagingInterventional radiologyGeneral MedicineMiddle Agedmedicine.diseaseMagnetic Resonance ImagingFocal nodular hyperplasia liver Computed tomographyMagnetic resonance imagingContrast-enhanced ultrasoundIopamidolFocal Nodular Hyperplasiacardiovascular systemFemaleRadiologybusinessSettore MED/36 - Diagnostica Per Immagini E RadioterapiaContrast-enhanced ultrasound
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Multidetector Computed Tomography Angiography (MD-CTA) of Coronary Artery Bypass Grafts – Update 2017

2017

Coronary artery bypass grafting (CABG) is still an important therapeutic approach in the treatment especially of advanced coronary artery disease. In this study, we elucidate the current role of multidetector computed tomography angiography (MD-CTA) in imaging patients after CABG surgery.This study is based on recent reports in the literature (2007 - 2016) on imaging of CABG using 64-slice MD-CT scanners and beyond. We included 13 reports that compared ECG-gated MD-CTA with conventional invasive coronary angiography (ICA) as the reference standard for the assessment of graft patency and for the detection of 50 % stenoses. These studies had to provide absolute values for true-positive, true-…

medicine.medical_specialtyComputed Tomography AngiographyCardiac-Gated Imaging TechniquesCoronary DiseaseBypass grafts030204 cardiovascular system & hematologyCoronary AngiographyRadiation DosageSensitivity and Specificity030218 nuclear medicine & medical imagingCoronary artery disease03 medical and health sciencesPostoperative Complications0302 clinical medicineMultidetector Computed TomographyMultidetector computed tomographyImage Processing Computer-AssistedmedicineVascular PatencyRadiology Nuclear Medicine and imagingcardiovascular diseasesCoronary Artery Bypassmedicine.diagnostic_testbusiness.industryGraft Occlusion VascularBlood flowmedicine.diseasemedicine.anatomical_structureAngiographyRadiologyTomographybusinessAlgorithmsArteryRöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
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A rare case of a coronary artery anomaly detected on multidetector computed tomography

2013

An anomalous aortic origin of the coronary artery arising from the opposite sinus with an interarterial course is a rare condition that is associated with a high risk of sudden cardiac death during or after strenuous exertion. We herein report the case of a 47-year-old woman presenting with chest pain, syncope and palpitations who presented with a rare coronary artery anomaly on multidetector computed tomography coronary artery (MDCT-CA) with prospective electrocardiogram (ECG) gating.

medicine.medical_specialtyCoronary Vessel AnomaliesChest painSudden deathSudden cardiac deathElectrocardiographyInternal medicineMultidetector computed tomographyCoronary artery anomalyMultidetector Computed TomographyInternal MedicinePalpitationsMedicineHumanscardiovascular diseasesSinus (anatomy)business.industryGeneral MedicineMiddle Agedmedicine.diseaseSettore MED/11 - Malattie Dell'Apparato Cardiovascolaremedicine.anatomical_structurecardiovascular systemCardiologyExercise TestFemalemedicine.symptombusinesscoronary anomalies coronary computed tomography sudden deathArtery
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Anatomical and procedural features associated with aortic root rupture during balloon-expandable transcatheter aortic valve replacement

2013

Background— Aortic root rupture is a major concern with balloon-expandable transcatheter aortic valve replacement (TAVR). We sought to identify predictors of aortic root rupture during balloon-expandable TAVR by using multidetector computed tomography. Methods and Results— Thirty-one consecutive patients who experienced left ventricular outflow tract (LVOT)/annular/aortic contained/noncontained rupture during TAVR were collected from 16 centers. A caliper-matched sample of 31 consecutive patients without annular rupture, who underwent pre-TAVR multidetector computed tomography served as a control group. Multidetector computed tomography assessment included short- and long-axis diameters an…

Malemedicine.medical_specialtyCardiac CatheterizationTranscatheter aorticAortic rootmedicine.medical_treatmentAortic Rupturemultidetector computed tomographySettore MED/11 - Malattie dell'Apparato CardiovascolareCohort StudiesValve replacementPredictive Value of TestsRisk FactorsPhysiology (medical)Internal medicineMultidetector computed tomographymedicine80 and overVentricular outflow tractHumanscardiovascular diseasesannular calcification; annular rupture; multidetector computed tomography; transcatheter heart valves; Aged; Aged 80 and over; Angioplasty Balloon; Aortic Rupture; Aortic Valve; Aortic Valve Stenosis; Calcinosis; Cohort Studies; Female; Heart Valve Prosthesis Implantation; Humans; Logistic Models; Male; Predictive Value of Tests; Risk Factors; Tomography X-Ray Computed; Cardiac CatheterizationTomographyAgedAged 80 and overHeart Valve Prosthesis Implantationbusiness.industrySinotubular JunctionAngioplastyCalcinosisAortic Valve Stenosismedicine.diseaseX-Ray ComputedBalloon expandable stentLogistic Modelstranscatheter heart valvesAortic ValveCardiologycardiovascular systemannular ruptureFemaleRadiologyCardiology and Cardiovascular MedicinebusinessTomography X-Ray ComputedAngioplasty BalloonBalloonCalcificationannular calcification
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Pulmonary emphysema in cystic fibrosis detected by densitometry on chest multidetector computed tomography.

2013

BackgroundHistopathological studies on lung specimens from patients with cystic fibrosis (CF) and recent results from a mouse model indicate that emphysema may contribute to CF lung disease. However, little is known about the relevance of emphysema in patients with CF. In the present study, we used computationally generated density masks based on multidetector computed tomography (MDCT) of the chest for non-invasive characterization and quantification of emphysema in CF.MethodsVolumetric MDCT scans were acquired in parallel to pulmonary function testing in 41 patients with CF (median age 20.1 years; range 7-66 years) and 21 non-CF controls (median age 30.4 years; range 4-68 years), and subj…

AdultMalemedicine.medical_specialtyAdolescentCystic FibrosisScienceCystic fibrosisPulmonary function testingHounsfield scaleMultidetector computed tomographyMedicineHumansLung volumesChildAgedEmphysemaMultidisciplinaryLungbusiness.industryQCase-control studyRMiddle Agedrespiratory systemmedicine.diseaserespiratory tract diseasesmedicine.anatomical_structureCase-Control StudiesMedicineFemaleRadiologybusinessDensitometryTomography X-Ray ComputedResearch ArticlePLoS ONE
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Heart Rate Sequential Analysis During Multidetector Computed Tomography Coronary Angiography: What Factors Do You Take Into Account In Understanding …

2007

Multidetector Computed Tomography Coronary Angiography Heart RateSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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Quantitative structural analysis of trabecular alveolar bone in the mandible by multidetector computed tomography: Differences according to tooth pre…

2019

Background and objective: There is a lack of quantitative measures of the quality of alveolar trabecular bone, an important factor in implantology. This study aimed to develop a method of objectively assessing the quality of trabecular bone by means of image processing and structural analysis of multidetector computed tomography images and to establish differences between tooth types and tooth presence/absence. Materials and methods: We analyzed 20 patients who underwent multidetector computed tomography to evaluate mandibular bone and tooth positioning. Image analysis included automatic segmentation of the mandible, obtainment of sections perpendicular to the dental arch, and structural an…

Trabecular boneMolarmedicine.medical_treatmentMandible030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicinestomatognathic systemHounsfield scaleMultidetector computed tomographymedicineQuantitative analysisDental implantDental alveolusGeneral Environmental ScienceOrthodonticsTooth presencebusiness.industryMultidetector CTDental implantsMandible030206 dentistrystomatognathic diseasesDental archmedicine.anatomical_structureGeneral Earth and Planetary SciencesbusinessRadiología (English Edition)
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ECG-GATED MULTIDETECTOR COMPUTED TOMOGRAPHY FOR THE ASSESSMENT OF THE POSTOPERATIVE ASCENDING AORTA

2009

This study was undertaken to define the role of electrocardiographically (ECG)-gated multidetector computed tomography (MDCT) in the assessment of the postoperative ascending aorta. From November 2006 to June 2007, 21 patients, [11 men, ten women; age +/- standard deviation (SD): 62.7 +/- 10.8 years] with a history of ascending aorta replacement underwent ECG-gated MDCT and were prospectively included in our study. Ascending aorta replacement had been performed with different surgical techniques: Bentall-De Bono (four patients, 19%), Tirone-David (five patients, 23%), and modified Tirone-David with creation of aortic neosinuses (12 patients, 57%). Two patients were excluded from MDCT evalua…

Malemedicine.medical_specialtyAortic DiseasesContrast MediaAorta ThoracicBlood Vessel Prosthesis ImplantationElectrocardiographyPostoperative ComplicationsAortic valve replacementECG gatingmedicine.arteryAscending aortaMultidetector computed tomographymedicineHumansRadiology Nuclear Medicine and imagingAortic valve prosthesicardiovascular diseasesAortaNeuroradiologyAortamedicine.diagnostic_testbusiness.industryMultidetector CTUltrasoundInterventional radiologySettore MED/23 - Chirurgia CardiacaGeneral MedicineMiddle Agedmedicine.diseaseIopamidolAortic valve replacementTreatment OutcomeEchocardiographyEcg gatingcardiovascular systemRadiographic Image Interpretation Computer-AssistedFemaleRadiologybusinessTomography X-Ray ComputedSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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