Mark T Duffy

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PURPOSE Because signal-to-noise performance improves with increased magnetic field strength, the quality of magnetic resonance images is greater at 3.0 tesla (T) than at 1.5 T. Because of the longer T1 values at higher field strength, intravenously administered magnetic resonance contrast agents provide improved T1 enhancement at 3.0 T. We have used these(More)
The management of uveal melanomas always has been a challenge to the clinicians and has evolved from the era of eye-removing surgeries to elimination of the tumor by the body's own immune system through vaccines. Evaluating the outcome of each strategy improves our understanding of the disease process and helps us to improvise on the existing modalities of(More)
The salamander is the only limbed adult vertebrate which can regenerate portions of cervical, thoracic, or lumbar spinal cord. While the salamander has been a popular model for regeneration of the spinal cord, it is still not known what portions of the nervous system participate in the regeneration process. In the experiments reported here we examine the(More)
PURPOSE To compare the complication rate of porous polyethylene orbital motility implants with solid acrylic implants following enucleation and identify possible risk factors. METHODS The authors retrospectively reviewed the charts of a total of 117 consecutive enucleations performed at the University of Illinois at Chicago between March 28, 1994, and May(More)
OBJECTIVE To investigate a scaffold-enhanced, light-activated bioadhesive technique as a substitute for sutures in ophthalmic surgery. CLINICAL RELEVANCE Suture use in ophthalmic surgery is technically demanding and time consuming and may be associated with serious complications such as inadvertent ocular penetration, which can result in retinal(More)
Ophthalmic surgery currently utilizes suture materials to repair wounds created during eye operations. Although effective, suture-based techniques can result in complications that further impair the patient's vision, such as retinal detachment and scleral perforation associated with strabismus (eye muscle) surgery. Two techniques currently under development(More)
PURPOSE Bioadhesives have had limited use in ophthalmic surgery. Problems with these adhesives have included inadequate tensile strength and difficulty with their application to the tissue site. We evaluated a scaffold-enhanced cyanoacrylate bioadhesive composite as an alternative to sutures in ophthalmic surgery, including strabismus procedures. METHODS(More)