Korea Institute of Science and Technology

Samsung Electronics Co., Ltd.

Young Ha Kim

Soo Hyun Kim

Ki Dong Park

Soo-Hong Lee

Jong Min Park

Dong Keun Han

Jong Sung Lim

Youn-Woo Lee

Hyun Hee Jo

Won Kyu Lee

Hyun Chul Goo

Ji Won Pack

Oju Jeon

Hack Joo Kim

Disclosed herein is a magnetic resonance imaging apparatus. The magnetic resonance imaging apparatus includes a table disposed in a cavity which is formed in a bore, a head support having a support hole through which an upper surface of the table is visible to an object disposed on the table, and a display configured to display a graphical user interface (GUI) image, the display being disposed between the table and the head support.

Magnetic resonance imaging apparatus

In polymerizing biodegradable polymer material, a compressed gas is used as a reaction solvent for a solution-polymerization, in order to prepare biodegradable polyester homopolymer and copolymer with a high molecular weight in a fine powder form with a particle size of 0.01&#x2dc;1000 &#x3bc;m.

Biodegradable polyester polymer and method for preparing the same using compressed gas

Disclosed is a sequentially ordered biodegradable lactide (or glycolide or lactide/glycolide)/&egr;-caprolactone multi-block copolymers having proper degradation properties and enhanced mechanical properties such as flexibility and elasticity and a process for the preparation thereof.

Sequentially ordered biodegradable lactide (glycolide or lactide/glycolide)&egr;-caprolactone multi-block copolymer and process for the preparation thereof

Disclosed are surface-modified medical metallic materials and preparation thereof. The medical metallic material is prepared by coating a gold or silver thin layer onto a base metal, adsorbing a polyfunctional sulfur compound onto the gold or silver thin layer, and chemically bonding a biologically active material such as heparin or estradiol to the functional group of the sulfur compound. The biologically active material is firmly bonded to the base metal via the sulfur compound. Being significantly improved in antithrombogenicity and biocompatibility, the metallic materials are suitable for use in various implants, including stents, artificial cardiac valves and catheters.

Biocompatible metallic materials grafted with biologically active compounds and preparation thereof

The present invention relates to polyethyleneglycol/polylactide(or polyglycolide or polycaprolactone)/polyethyleneglycol triblock copolymers with an enhanced reactivity, and process for their preparation. More specifically, the present invention is directed to triblock copolymers that are obtained by the process comprising the step of synthesizing a polylactide(or polyglycolide or polycaprolactone) having hydroxy groups at both ends and the step of coupling said polylactide with polyethyleneglycol having an acylhalide group of a high reactivity at one of its ends, and the process for preparing the same Since the triblock copolymer according to the present invention has an ester structure with good biocompatibility, it can be applied extensively for biomaterials used in tissue engineering, in a matrix that slowly releases drugs, etc.

Biodegradable triblock copolymers and process for their preparation

The specification describes an invention of calcification resistant bioprosthetic heart valves which can be used for a long term, and have good blood compatibility and in vivo stability, and have high calcification resistance. The bioprosthetic heart valves of the invention can be prepared by binding sulfonated polyethylene oxide (PEO) derivatives covalently to the tissue. The valves have an anionic effect equal to that of chondroitin sulfate, space filling effect, and blocking effect of the carboxyl group of collagen which has been known as one factor of the calcium deposition,. In particular, the present method has better advantages in view of calcification resistance than any other conventional methods, because it suppresses thrombosis and embolism and decreases incidence of infection.

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Seoul, South Korea

Young Ha Kim