Diagnostic value of time-resolved CT angiography for the lower leg

Objective  

The aim of this study was to test the feasibility of time-resolved computed tomography angiography (TR-CTA) for use in the lower leg.     

Fenestrations of the intracranial vertebrobasilar system diagnosed by MR angiography

Introduction  

Fenestrations of cerebral arteries are most common in the vertebrobasilar (VB) system, and magnetic resonance (MR) angiographic studies of these variations are sparse.     

High-resolution 3D non-contrast-enhanced, ECG-gated, multi-step MR angiography of the lower extremities: Comparison with contrast-enhanced MR angiography

Objective  

To determine the diagnostic value of non-contrast-enhanced, 3D-high-resolution, ECG-gated, multi-step MR angiography (non-ceMRA) of the lower extremities using a modified turbo-spin-echo technique in comparison to 1.0-molar contrast-enhanced MR angiography (ceMRA) in patients with suspected peripheral vascular disease (PVD).     

Automated computer-aided stenosis detection at coronary CT angiography: initial experience

Objective  

To evaluate the performance of a computer-aided algorithm for automated stenosis detection at coronary CT angiography (cCTA).     

Image quality and diagnostic accuracy of unenhanced SSFP MR angiography compared with conventional contrast-enhanced MR angiography for the assessment of thoracic aortic diseases

Objectives  

The purpose of this study was to determine the image quality and diagnostic accuracy of three-dimensional (3D) unenhanced steady state free precession (SSFP) magnetic resonance angiography (MRA) for the evaluation of thoracic aortic diseases.     

Magnetic resonance angiography of fetal vessels: feasibility study in the sheep fetus

Purpose  

The aim of this study was to perform fetal magnetic resonance angiography (MRA) in utero in a sheep model.     

Intravenous flat-detector CT angiography in acute ischemic stroke management

Introduction  

In the settings of stroke, a non-invasive high-resolution imaging modality to visualize the arterial intracranial circulation in the interventional lab is a helpful mean to plan the endovascular recanalization procedure. We report our initial experience with intravenously enhanced flat-detector CT (IV FDCT) technology in the detection of obstructed intracranial arteries.     

Image fusion of coronary CT angiography and cardiac perfusion MRI: a pilot study

Objective  

To develop a tool for the image fusion of computed tomography coronary angiography (CTCA) and cardiac magnetic resonance imaging (CMR).     

Systolic acquisition of coronary dual-source computed tomography angiography: feasibility in an unselected patient population

Objective  

To determine the practicability and potential dose saving of an imaging algorithm incorporating a pulsing scheme applying systolic data acquisition at heart rates >75 beats per minute (bpm).     

Comparison of high efficiency CZT SPECT MPI to coronary angiography

Background  

The recently introduced cadmium zinc telluride (CZT) SPECT cameras have the potential to reduce radiation exposure to patients and shorten imaging time. So far, there has been only one small study comparing the results of high efficiency CZT SPECT myocardial perfusion imaging (MPI) to invasive coronary angiography.     

Magnetic resonance angiography of the carotid arteries: comparison of unenhanced and contrast enhanced techniques

Objective  

To compare different techniques for carotid imaging including contrast-enhanced, unenhanced and dynamic techniques to find an alternative to contrast-enhanced MRA.     

High-pitch dual-source CT coronary angiography: systolic data acquisition at high heart rates

Objective  

To assess the effect of systolic data acquisition for electrocardiography (ECG)-triggered high-pitch computed tomography (CT) on motion artefacts of coronary arteries in patients with high heart rates (HRs).     

Body weight-tailored contrast material injection protocol for 64-detector row computed tomography coronary angiography

Purpose  

The aim of this study was to assess the body weight-tailored contrast material injection protocol for 64-detector computed tomography (CT) to maintain optimal coronary CT attenuation.     

Low-dose contrast protocol using the test bolus technique for 64-detector computed tomography coronary angiography

Purpose  

We evaluated low-contrast injection protocols for coronary computed tomography angiography (CTA) using a 64-detector scanner and the test bolus technique.     

Influence of coronary artery disease prevalence on predictive values of coronary CT angiography: a meta-regression analysis

Objective  

To evaluate the impact of coronary artery disease (CAD) prevalence on the predictive values of coronary CT angiography.     

Anomalous origin of the occipital artery diagnosed by magnetic resonance angiography

Introduction  

It is well known that the occipital artery (OA) can arise from the internal carotid artery (ICA) or vertebral artery (VA). However, the incidence of an anomalously originating OA has not been reported. We investigate its incidence and characteristic features on magnetic resonance angiography (MRA).     

Comparison of standard- and low-tube voltage MDCT angiography in patients with peripheral arterial disease

Objective:  

We investigated the effect of low-tube-voltage CT angiography with a reduced volume of contrast agent on qualitative and quantitative parameters and the radiation dose in patients with peripheral arterial disease.     

Usefulness of multidetector computed tomography coronary venous angiography examination before cardiac resynchronization therapy

Purpose  

Cardiac resynchronization therapy (CRT) is a treatment option for selected heart failure patients. In this study, the aim was to evaluate the usefulness of noninvasive cardiac vein imaging using multidetector computed tomography (MDCT) angiography before CRT.     

Systolic prospectively ECG-triggered dual-source CT angiography for evaluation of the coronary arteries in heart transplant recipients

Objectives  

To assess feasibility, image quality, and radiation dose of prospectively ECG-triggered coronary CT angiography (CTA) in orthotopic heart transplant (OHT) recipients.     

Dual energy bone subtraction in computed tomography angiography of extracranial-intracranial bypass: feasibility and limitations

Objectives  

To assess the feasibility of dual energy (DE)-CTA images with DE-bone removal (DEBR) for visualization of extra- to intracranial (EC/IC) arterial bypass compared to digital subtraction angiography (DSA).