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OBJECTIVE The purpose of this study was to prospectively evaluate the accuracy of an augmented reality image overlay system in MRI-guided spinal injection procedures. MATERIALS AND METHODS An augmented reality prototype was used in conjunction with a 1.5-T MRI system. A human lumbar spine phantom was used in which 62 targets were punctured to assess the(More)
Imaging studies are central to the evaluation of persistent or recurrent symptoms after hip arthroplasty. The evaluation starts with radiographs and may be followed by arthrography, aspiration, scintigraphy, sonography, computed tomography, and MR imaging. Common etiologies of a painful or dysfunctional hip arthroplasty are mechanical loosening,(More)
Magnetic resonance (MR) neurography - guided nerve blocks and injections describe a techniques for selective percutaneous drug delivery, in which limited MR neurography and interventional MR imaging are used jointly to map and target specific pelvic nerves or muscles, navigate needles to the target, visualize the injected drug and detect spread to(More)
Periprosthetic joint infections are a devastating complication after arthroplasty and are associated with substantial patient morbidity. More than 25% of revisions are attributed to these infections, which are expected to increase. The increased prevalence of obesity, diabetes, and other comorbidities are some of the reasons for this increase. Recognition(More)
Magnetic resonance (MR)-guided spine injections describe techniques for selective spine injection procedures, in which MR imaging is used to visualize spinal targets and needle placement, monitor the injected drugs, and detect spread to potentially confounding nearby structures. The introduction of clinical high-field wide-bore MR imaging systems has(More)
We have generated rat and murine monoclonal antibodies against multidrug resistance-associated protein (MRP), a M,. 180,000-195,000 membrane glycoprotein involved in a non-P-glycoprotein multidrug re sistance of human tumor cells. The antibodies were raised against two different segments of MRP and found to be suitable for protein blot analyses,(More)
BACKGROUND Atherosclerotic epicardial coronary arteries are a major cause of acute myocardial infarction (AMI). Recently, we found that intramyocardial capillaries may also play a role in AMI induction. We have now evaluated intramyocardial capillaries using ultrastructural analysis in AMI patients. METHODS 43 AMI patients (with AMI in the left ventricle)(More)
Interventional magnetic resonance (MR) neurography is a minimally invasive technique that affords targeting of small nerves in challenging areas of the human body for highly accurate nerve blocks and perineural injections. This cross-sectional technique uniquely combines high tissue contrast and high-spatial-resolution anatomic detail, which enables the(More)