Abstract: A contrast enhancing agent for magnetic resonance images having a chelating agent, which can be bound to metals having at least one unpaired electron. Examples of such chelating agents include 3,6,9-tris(carboxymethyl)-1, 11-bis(dimethylamine)-3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(diethanolamino) 3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(tris(hydroymethyl) aminomethane)-3,6,9-triazaundecane; 3,6-bis(carboxymethyl-1,8-bis(N-carboxymethylglucosamino)-3,6-diazoctane; DTPA-bis(galactosamide), DTPA-Bis(glucosamide), DTPA-Bis(pyridoxamide), and poly-(DTPA-ethylenediamide).

Abstract: A coil element, comprising a quadrature surface coil, includes side by side loops, slightly overlapped to the degree necessary to cancel mutual inductance. A coil includes a split-capacitor configuration for balanced-to-unbalanced conversion between the coil and a coaxial cable, without interfering with the highly magnetic environment of a magnetic resonance imaging system. A coil includes multiple diodes and current stabilizing impedances in parallel, or alternatively a combination of a fast low-power PIN diode and a slow high-power diode to effectively multiply the power handling capability of fast diodes for passive decoupling in a decoupling circuit for reducing the risk to the patient over active decoupling. A coil includes a counter-rotating decoupling circuit to cancel the effects of decoupler radiation, and to prevent lowering of the quality factor of the decoupling circuit and the detection of undesirable image artifacts.

Abstract: A polymeric contrast enhancing agent for magnetic resonance images having a chelating agent, which can be bound to metal ions having at least one unpaired electron, such as gadolinium. Examples of such chelating agents include DTPA-ethylenediamide-methacrylate copolymer and poly-(DTPA-ethylenediamide). These contrast enhancing agents, bound to the metal ions, are then administered to a patient, and following this the MR images are taken.

Abstract: A contrast enhancing agent for magnetic resonance images having a chelating agent, which can be bound to metals having at least one unpaired electron. Examples of such chelating agents include 3,6,9-tris(carboxymethyl)-1, 11-bis(dimethylamine)-3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(diethanolamino) 3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(tris(hydroymethyl) aminomethane)-3,6,9-triazaundecane; 3,6-bis(carboxymethyl-1,8-bis(N-carboxymethylglucosamino)-3,6-diazoctane; DTPA-bis(galactosamide), DTPA-Bis(glucosamide), DTPA-Bis(pyridoxamide), and poly-(DTPA-ethylenediamide).