BACKGROUND AND PURPOSE Endoaneurysmal implantation of fibroblasts may promote healing of aneurysms and reduce recanalization after therapeutic embolization. The purpose of our study was to develop a device for delivery of fibroblasts with use of current microcoil technology. MATERIALS AND METHODS Cell carrier devices and cell-free devices were fabricated by associating collagen gels (with or ...

In this work, we model a radiofrequency discharge of hydrogenated silicon nitride in a capacitive coupled plasma reactor using Maxwellian and non-Maxwellian electron energy distribution function. The purpose is to investigate whether there is a real advantage and a significant contribution using non-Maxwellian electron energy distribution function rather than Maxwellian one for determining the ...

Percutaneous devices have long been used for the retrieval of foreign bodies from major vessels. Only recently have devices been designed of a caliber practical enough for use in the neurovascular system. We describe two cases in which a microretrieval system was used to remove foreign bodies from the extracranial carotid artery and the intracranial circulation. In one case, a hybrid retrieval ...

We present a novel approach to perform high-sensitivity NMR imaging and spectroscopic analysis on microfluidic devices. The application of NMR, the most information-rich spectroscopic technique, to microfluidic devices remains a challenge because the inherently low sensitivity of NMR is aggravated by small fluid volumes leading to low NMR signal and geometric constraints resulting in poor effic...

Neural prostheses that stimulate the neocortex have the potential to treat a wide range of neurological disorders. However, the efficacy of electrode-based implants remains limited, with persistent challenges that include an inability to create precise patterns of neural activity as well as difficulties in maintaining response consistency over time. These problems arise from fundamental limitat...

This article describes the development and testing of the first automatically microfabricated probes to be used in conjunction with the magic angle coil spinning (MACS) NMR technique. NMR spectroscopy is a versatile technique for a large range of applications, but its intrinsically low sensitivity poses significant difficulties in analyzing mass- and volume-limited samples. The combination of m...

PURPOSE To evaluate the safety and efficacy of an embolotherapeutic technique that uses electrolytically detachable platinum coils and radio frequency (RF) energy to achieve rapid and distal occlusion of targeted vessels. METHODS In swine, branches of the ascending cervical artery and the hepatic artery measuring 1.5 mm or less were subjected to endovascular electrocoagulation. RF energy was ...

A rare case of posttraumatic high-flow priapism is presented. A 20-year-old man underwent diagnostic procedure with color Doppler sonography and angiography. On color Doppler sonography and selective and supraselective angiographic images, arteriocavernosal fistula and pseudoaneurysm were detected in the proximal part of the right cavernous body. Complete detumescence of the penis was achieved ...