摘要:
The invention relates to a method of water diffusion imaging in magnetic resonance imaging in an area of diagnostic interest, characterized in that it comprises, in combination, the administration of a contrast product capable of generating a signal specifically in its specific location area, said location area being included in said area of interest, the application of a water diffusion imaging sequence to the whole area of interest, and the reading of the images in the area of interest, the specific signal due to the contrast product significantly and specifically modifying the signal in the specific location area relative to the signal of the whole area of interest.
摘要:
The invention relates to iodine-containing polymers including a skeleton comprised of a dextrane to which are grafted groups having the formula (I), wherein the groups R are simultaneously groups derived from triiodobenzenic amines and groups derived from aliphatic amines.
摘要:
The subject of the invention is nitrogen-containing cyclic ligands and metal complexes formed by these ligands, the uses of these complexes as magnetic resonance imaging (MRI) agents, as X-ray contrast agents and as chemical shift reagents in vivo.
摘要:
The invention concerns gadolinium complexes of formula: ##STR1## in which R represents a group of formula: ##STR2## in which X is Br or I; R.sub.1 is H or optionally hydroxylated alkyl;R.sub.2 is hydroxylated alkyl; oralternatively R.sub.1 is H and R.sub.2 is a group of formula: ##STR3## X being as defined above, and R'.sub.1 and R'.sub.2 being as defined for R.sub.1 and R.sub.2 excepted that they do not represent A, provided that --CO--NR.sub.1 R.sub.2 or --CO--NR'.sub.1 R'.sub.2 comprises at least 2 hydroxyl groups, and M represents H or the cation of an inorganic or organic base.
摘要:
Poly(amino acid) derivatives, which are chelating agents of paramagnetic metal ions, in which at least 3 of the donor nitrogen atoms carry identical or different substituents, of formula CH (R.sub.1) --X, in which X represents CO.sub.2 R.sub.a, CONR.sub.b R.sub.c or P(R.sub.d)O.sub.2 H and R.sub.a, R.sub.b and R.sub.c, which are identical or different, represent H or optionally hydroxylated (C.sub.1 -C.sub.8)alkyl, R.sub.d represents OH, (C.sub.1 -C.sub.8)alkyl or (C.sub.1 -C.sub.8)alkoxy and R.sub.1 represents a hydrophilic group with a molecular weight greater than 200 containing at least 3 oxygen atoms, with the proviso that at least 3 of the X groups are optionally salified acid functional groups.
摘要翻译:作为顺磁金属离子的螯合剂的聚(氨基酸)衍生物,其中至少3个供体氮原子具有式CH(R 1)-X的相同或不同取代基,其中X表示CO 2 R a,CONR b R c或P (R d)O 2 H和R a,R b和R c相同或不同,表示H或任选羟基化的(C 1 -C 8)烷基,R d表示OH,(C 1 -C 8)烷基或(C 1 -C 8)烷氧基,R 1表示 具有至少3个氧原子的分子量大于200的亲水基团,条件是至少3个X基团是任选的盐化酸官能团。
摘要:
1-Pyrrole- and 1-pyrrolidine-carboxylic acid derivatives corresponding to the general formula: ##STR1## in which R represents an alkyl radical having from 1 to 4 carbon atoms, preferably ethyl, and Am represents a group: ##STR2## wherein R.sub.1 represents a 3-oxo-alkyl radical ##STR3## or a 3-oxo-alkenyl radical ##STR4## and R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are identical, each represent hydrogen, ##STR5## R.sub.3 representing an alkyl radical having from 1 to 5 carbon atoms with the proviso that when R.sub.1 and R.sub.2 are simultaneously hydrogen, Am represents the group A.The novel derivatives are useful as intermediates for synthetizing azaprostaglandines.
摘要:
Poly(amino acid) derivatives, which are chelating agents of paramagnetic metal ions, in which at least 3 of the donor nitrogen atoms carry identical or different substituents, of formulaCH(R.sub.1)--X,in which X represents CO.sub.2 R.sub.a, CONR.sub.b R.sub.c or P(R.sub.d)O.sub.2 H and R.sub.a, R.sub.b and R.sub.c, which are identical or different, represent H or optionally hydroxylated (C.sub.1 -C.sub.8)alkyl, R.sub.d represents OH, (C.sub.1 -C.sub.8)alkyl or (C.sub.1 -C.sub.8)alkoxy and R.sub.1 represents a hydrophilic group with a molecular weight greater than 200 containing at least 3 oxygen atoms, with the proviso that at least 3 of the X groups are optionally salified acid functional groups.
摘要翻译:作为顺磁金属离子的螯合剂的聚(氨基酸)衍生物,其中至少3个供体氮原子具有式CH(R 1)-X的相同或不同取代基,其中X表示CO 2 R a,CONR b R c或P (R d)O 2 H和R a,R b和R c相同或不同,表示H或任选羟基化的(C 1 -C 8)烷基,R d表示OH,(C 1 -C 8)烷基或(C 1 -C 8)烷氧基,R 1表示 具有至少3个氧原子的分子量大于200的亲水基团,条件是至少3个X基团是任选的盐化酸官能团。
摘要:
The invention relates to ligands of formula ##STR1## in which B represents an ##STR2## W representing the ##STR3## group, in which groups X and Z represent a heterocycle. The invention also relates to the monometallic or polymetallic complexes formed by these ligands with metal ions chosen from lanthanide ions, transition metal ions. barium, bismuth, lead and the radioisotopes .sup.99m Tc, .sup.111 In, .sup.90 Y, .sup.64 Cu and .sup.169 Yb, as well as the physiologically acceptable salts of these complexes.The salts of these complexes may be used as diagnostic or therapeutic agents in nuclear magnetic resonance imaging and X-ray radiology, as in-vivo chemical shift agents and in nuclear medicine.No figure