摘要:
The invention relates to ultrasound contrast agents comprising vesicles comprising a protein capable of formation of gas-containing vesicles, wherein the vesicles contain gas which comprises sulphur hexafluoride or a low molecular weight fluorinated hydrocarbon. These contrast agents exhibit stability in vivo upon administration so as to permit ultrasound visualization while allowing rapid subsequent elimination from the system.
摘要:
A method of crosslinking a crosslinkable protein or carbohydrate substrate to form a crosslinked substrate in which the crosslinking groups are biodegradable. The crosslinking groups may comprise methylene diacrylate and the substrate can be galactose.
摘要:
The invention relates to compounds of formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from: (i) saturated or unsaturated fatty acyl groups, preferably having from 14 to 24 carbon atoms, more preferably of a type found in nature; or (ii) groups of formula (II): ##STR2## wherein R.sup.4 and R.sup.5 are independently selected from hydrogen atoms, C.sub.1-4 alkyl groups and aryl groups, preferably C.sub.6-10 aryl groups; n represents the integers 0 or 1; A represents either a chemical bond or a straight or branched C.sub.1-6 alkylene chain and R.sup.6 is a triiodinated phenyl group which may also carry other substituents. The invention also relates to X-ray contrast media containing these compounds, as well as methods of enhancing X-ray images of a human subject wherein the contrast media are administered to the subject prior to imaging.
摘要:
The invention relates to ultrasound contrast agents comprising a microbubble-generating suspension of a microparticulate X-ray contrast agent in a liquid carrier medium.
摘要:
The invention relates to non-crosslinked non-polypeptide polymers containing biodegradable lipophilic side chains incorporating methylene diester units of the formula --[--CO--O--C(R.sup.1 R.sup.2)--O--CO--]--, where R.sup.1 and R.sup.2 each represents a hydrogen atom or a carbon-attached monovalent organic group or R.sup.1 and R.sup.2 together form a carbon-attached divalent organic group. The lipophilic moieties are biodegradatively cleavable to yield a water-soluble polymer.
摘要:
The invention relates to certain substituted derivatives of aminopolycarboxylic acids and metal chelates thereof. The compounds are particularly suitable for use as diagnostic agent. For example, the compounds can be used as radiodiagnostic agents, detoxification agents and contrast agents for diagnostic imaging processes. In particular, the high relaxivity paramagnetic metal chelates of substituted aminopolycarboxylic acids are especially suited for use as magnetic resonance imaging contrast agents.
摘要:
The present invention relates to contrast agents comprising gas-containing or gas-generating polymer microparticles and/or microballoons, in which the polymer is a biodegradable polymer containing units of formula -�--(O).sub.m --CO--O--C(R.sup.1 R.sup.2)--O--CO--(O).sub.n --!- . R.sup.1 and R.sup.2 each represent hydrogen or a carbon-attached monovalent organic group, or together form a carbon-attached divalent organic group, and m and n are each independently zero or one. The contrast agents may be used in diagnostic applications such as ultrasound and MR imaging.
摘要:
The present invention relates to the process for the preparation of a biodegradable polymer comprising diester units of the formula (III) --�(O)--CO--O--C(R.sup.1 R.sup.2)--O--CO--(O)--R.sup.3 !--; where R.sup.1 and R.sup.2 each represents a hydrogen atom or a carbon-attached monovalent organic group or R.sup.1 and R.sup.2 together form a carbon-attached divalent organic group; m and n, which may be the same or different, are 0 or 1; and R.sup.3 is a carbon-attached divalent organic grouping.
摘要:
Contrast agents comprising gas-containing or gas-generating polymer microparticles and/or microballoons, in which the polymer is a biodegradable polymer containing units of formula --(O).sub.m --CO--O--C(R.sup.1 R.sup.2)--O--CO--(O).sub.n -- (wherein R.sup.1 and R.sup.2 each represent hydrogen or a carbon-attached monovalent organic group or together form a carbon-attached divalent organic group, and m and n are each independently zero or one) may be used in diagnostic applications such as ultrasound and MR imaging.
摘要翻译:包含含气体或产生气体的聚合物微粒和/或微球的造影剂,其中聚合物是含有式(O)m -CO-OC(R 1 R 2)-O-CO-(O)n的单元的可生物降解的聚合物 - (其中R 1和R 2各自表示氢或连接碳的一价有机基团或一起形成连接碳的二价有机基团,m和n各自独立地为0或1)可以用于诸如超声波和MR的诊断应用 成像。