Dual energy CTA of the carotid bifurcation: Advantage of plaque subtraction for assessment of grade of the stenosis and morphology
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Aim of the study was to evaluate the diagnostic value of 3D-MIP images after subtraction of bone and calcified plaques (PBS) using dual energy CT for the assessment of carotid bifurcation stenoses. Read more
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Article Series: Dual Energy CT – Scientific Evidence and Clinical Application (4/7) – Abdominal Imaging
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This article is part of the seven-article series on “Dual Energy CT – Scientific Evidence and Clinical Application”. T. Johnson talks about DE applications in abdominal imaging including aorta and plaque imaging. Read more
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Characterization of coronary atherosclerosis by dual-source computed tomography and HU-based color mapping: a pilot study.
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To assess HU-based color mapping for characterization of coronary plaque, using intravascular ultrasound virtual histology (IVUS-VH) as a standard of reference. Dual-source computed tomography and IVUS-VH were prospectively performed in 13 patients. In five lesions, HU thresholds of the color-coding software were calibrated to IVUS-VH. In a 15-lesion verification cohort, … Read more
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ACCURATUM: improved calcium volume scoring using a mesh-based algorithm—a phantom study
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To overcome the limitations of the classical volume scoring method for quantifying coronary calcifications, including accuracy, variability between examinations, and dependency on plaque density and acquisition parameters, a mesh-based volume measurement method has been developed. It was evaluated and compared with the classical volume scoring method for accuracy, i.e., the normalized … Read more
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DSCT: advances of improved temporal resolution in coronary plaque imaging
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Abstract OBJECTIVES: The aim of this study was to quantify image quality gains of a moving coronary plaque phantom using dual-source computed tomography (DSCT) providing 83 milliseconds temporal resolution in direct comparison to 64 slice single-source multidetector CT (MDCT) with a temporal resolution of 165 milliseconds. MATERIALS AND METHODS: Three cardiac … Read more
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Dual Source CT Dual Energy Head and Neck CTA
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Case history A 72-year-old female patient arrives to CMIV at the University Hospital in Linköping, Sweden. She has been having two episodes of amarosis fugax two times last month and a severe holocephal headache for the last six hours. A CTA of the head and neck were performed at CMIV. Diagnosis/ Differential … Read more
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Calcification of the carotid artery
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Case history A 63-year-old hypertensive patient is presenting with transient amaurosis fugax and aphasia for 8 hours. MRI angiography was not possible because a cardiac pacemaker is present. Questions Abnormal anatomy of the carotid vessels? Severe carotid artery stenosis? Plaques of the carotid arteries? Diagnosis / Differential diagnosis Arteriosclerosis of the internal carotid artery Occlusion of carotid artery … Read more
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