Martin Heuschmid, M.D.

To prospectively evaluate the influence of the clinical pretest probability assessed by the Morise score onto image quality and diagnostic accuracy in coronary dual-source CT angiography (DSCTA). Read more

The aim of the present study was to evaluate the diagnostic accuracy of a new DSCT scanner generation with 83 ms temporal resolution in patients without stable sinus rhythm. Read more

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

To retrospectively evaluate radiation dose, image quality, and the ability to differentiate urinary calculi of differing compositions by using low-dose dual-energy CT. Read more

The aim of the study was to estimate radiation exposure of coronary calcium scoring and angiography using ECG-gated and ECG-triggered DSCT. Read more

In preliminary studies DSCT provides robust image quality over a wide range of heart rates and excludes CAD with high accuracy. The aim of the present study was to evaluate the reproducibility of these results in a large, unselected and consecutive group of patients scheduled for invasive coronary angiography (ICA). Read more

To assess dose and image quality of dual-energy (DE) mixed images in comparison to single-energy (SE) images. Read more

DECT has the potential to automatically remove calcified plaques from angiographic data sets. The objective of this study is to compare the accuracy of visual grading of stenoses after plaque removal with visual grading in standard reconstructions. Read more

We sought to evaluate the feasibility and efficiency of dual energy (DE) bone and plaque removal in head and neck CT angiography. Read more

The aim of this in vitro study was to examine the influence of an additional tin filter for the differentiation of human urinary calculi by dual energy CT. Read more

However, in patients with heart rate irregularities, MDCT was found to have limitations. Thus, the aim of the present study was to evaluate the diagnostic accuracy of a new DSCT scanner generation with 83 ms temporal resolution in patients without stable sinus rhythm. Read more

The efficiency and radiation dose of a low-dose dual-energy (DE) CT protocol for the evaluation of urinary calculus disease were evaluated. Read more

The main advantage of DSCT lies with the heart rate independency, which might have a positive impact on the diagnostic accuracy. Read more

MPRs are not capable of reducing dental artifacts sufficiently. In patients with dental artifacts overlying the anatomical structures of the oropharynx, an additional short angulated spiral parallel to the floor of the mouth is recommended and should be applied for daily routine. Read more

History Following successful RFCA a 51-year-old female was presented to CT for exclusion of pulmonary vein stenosis. The patient was clinically asymptomatic. Question Presence of post-interventional pulmonary vein stenosis or exclusion of further complications. Diagnosis / Differential diagnosis • Post-procedural 70% high grade … Read more

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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The aim of the present study was to evaluate the diagnostic accuracy of a new dual-source computed tomographic scanner generation with 83-ms temporal resolution in cardiac imaging. Fifty-one unselected consecutive patients (mean age 64 +/- 10 years) scheduled for invasive coronary angiography because of suspected or known coronary artery disease (CAD) … Read more

The following question has been sent by Sofiane Hadjadj, MD, clinical research, Canada: hi, we have just aquired the dual source ct, and I am very impressed by the quality of images for coro ct even with high calccium scoring, my question is regarding the EKG editing, are their any rules … Read more

History Six weeks after circumferential ablation of all PVs a 48-year old male is referred to CT for follow-up. On CT examination, the patient was not in AF and heart rate was 68 bpm. Question Presence of post-interventional pulmonary vein stenosis. Exclusion of rare complications such as atrial thrombi or pulmonary vein dissection. Diagnosis/Differential … Read more

Compared to other cardiac applications, motion artefacts are a minor issue in the examination of pulmonary veins. The University of Tuebingen recommends using the DSCT scanner in a non-gated single source mode for the visualization of the ostia and the distal veins. The role of CT in AF treatment When it comes … Read more

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

The following question has been asked by Rusli Muljadi MD, Indonesia: How to make good report of cardiac CT ?  What points must be reported? What the cardiologist want to know about result of cardiac CT? Must we report about cardiac function in every cardiac CT examination? Dear Dr. Muljadi, we use a … Read more

Case history 62-year-old female presenting with hypertension. She had undergone left nephrectomy 12 years prior. Since she is severely claustrophobic, an MRI can not be performed. Read more

Please click on the title to see the protocol. Read more

Dual energy plaque detection is a promising, evolving technique which yields very interesting possible applications. Specific modules enable the automated decomposition of calcium and iodine as well as the removal of calcified hard plaques from the images. Plaque detection with multi-slice systems Imaging arteriosclerosis and its major complication, arterial occlusive disease, is … Read more