Radiology
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Multicenter Study Comparative Study
Remodeling technique for endovascular treatment of ruptured intracranial aneurysms had a higher rate of adequate postoperative occlusion than did conventional coil embolization with comparable safety.
To compare the safety and efficacy of the remodeling technique with that of conventional coil embolization in a large multicenter series involving the endovascular treatment of ruptured intracranial aneurysms, the CLARITY study (Clinical and Anatomic Results in the Treatment of Ruptured Intracranial Aneurysms). ⋯ In our large series of patients treated for ruptured aneurysms, the remodeling technique-despite being performed in aneurysms with unfavorable characteristics-was as safe as conventional coil embolization and more efficacious in terms of the rate of adequate postoperative occlusion. These results indicate that the remodeling technique can be routinely used in the treatment of ruptured aneurysms.
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To assess whether carotid plaque hemorrhage depicted with magnetic resonance (MR) imaging was associated with thromboembolic activity as assessed with transcranial Doppler imaging. ⋯ In patients with carotid plaque hemorrhage demonstrated at MR imaging, there was increased spontaneous microembolic activity at transcranial Doppler imaging and cerebral ischemic lesion patterns suggestive of recurrent embolic events; these findings suggest that plaque hemorrhage shown at MR imaging might be a marker of thromboembolic activity and further validate the usefulness of carotid imaging in identifying patients with active carotid arterial disease.
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To evaluate the feasibility of magnetic resonance (MR) imaging-guided placement of an active vena cava filter (AVCF) in a swine model, the effectiveness of the system in filtering thrombi, and the detection of thrombi with MR imaging. ⋯ MR imaging-guided deployment and monitoring of an AVCF is feasible. The AVCF enhances the SNR and CNR, resulting in clear depiction of thrombi inside the filter without the need for contrast material. Design modifications for improved intracaval fixation and retrieval of the prototype AVCF will be required.
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Randomized Controlled Trial Multicenter Study Comparative Study
Multicenter, double-blind, randomized, intraindividual crossover comparison of gadobenate dimeglumine and gadopentetate dimeglumine for Breast MR imaging (DETECT Trial).
To intraindividually compare 0.1 mmol/kg doses of gadobenate dimeglumine and gadopentetate dimeglumine for contrast material-enhanced breast magnetic resonance (MR) imaging by using a prospective, multicenter double-blind, randomized protocol. ⋯ http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.10100968/-/DC1.
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Comparative Study
T1-weighted fat-suppressed imaging of the pelvis with a dual-echo Dixon technique: initial clinical experience.
To compare the image quality of water-only images generated from a dual-echo Dixon technique with that of standard fast spin-echo T1-weighted chemical shift fat-suppressed images obtained in patients evaluated for pelvic pain with a 1.5-T magnetic resonance (MR) system. ⋯ Compared with standard T1-weighted fat-suppressed imaging, dual-echo Dixon imaging facilitates improved image quality of fat-suppressed images of the pelvis, enabling better delineation of pathologic lesions.