GB1315391A - Radiographic contrast media - Google Patents

Radiographic contrast media

Info

Publication number
GB1315391A
GB1315391A GB3000970A GB3000970A GB1315391A GB 1315391 A GB1315391 A GB 1315391A GB 3000970 A GB3000970 A GB 3000970A GB 3000970 A GB3000970 A GB 3000970A GB 1315391 A GB1315391 A GB 1315391A
Authority
GB
United Kingdom
Prior art keywords
ferrite
specified include
radiographic contrast
ferrites
june
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3000970A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RIKEN Institute of Physical and Chemical Research
Original Assignee
RIKEN Institute of Physical and Chemical Research
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP44048725A external-priority patent/JPS4829124B1/ja
Priority claimed from JP44048724A external-priority patent/JPS4829123B1/ja
Priority claimed from JP44091718A external-priority patent/JPS4829126B1/ja
Priority claimed from JP45040656A external-priority patent/JPS4946055B1/ja
Application filed by RIKEN Institute of Physical and Chemical Research filed Critical RIKEN Institute of Physical and Chemical Research
Publication of GB1315391A publication Critical patent/GB1315391A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/04—X-ray contrast preparations
    • A61K49/0409—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is not a halogenated organic compound
    • A61K49/0414—Particles, beads, capsules or spheres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/04—X-ray contrast preparations
    • A61K49/0409—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is not a halogenated organic compound
    • A61K49/0414—Particles, beads, capsules or spheres
    • A61K49/0423—Nanoparticles, nanobeads, nanospheres, nanocapsules, i.e. having a size or diameter smaller than 1 micrometer
    • A61K49/0428—Surface-modified nanoparticles, e.g. immuno-nanoparticles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/445—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a compound, e.g. Fe3O4

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Power Engineering (AREA)
  • Epidemiology (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Medicinal Chemistry (AREA)
  • Biotechnology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Biophysics (AREA)
  • Dispersion Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Immunology (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

1315391 Radiographic contrast medium RIKAGAKU KENKYUSHO 19 June 1970 [20 June 1969 (2) 15 Nov 1969 13 May 1970] 30009/70 Heading A5B A radiographic contrast medium comprises (a) 10-65% by weight of a contrast agent and (b) a liquid carrier including a dispersing agent, the contrast agent comprising a soft magnetic ferrite in particles which are no greater than 0.2Á in diameter and an oxide of Ba, Bi, W, Zr, Sn, Ta, Y or a lanthanide, including La itself but excluding Pm. The ferrite may be produced by coprecipitation from an aqueous solution of salts of the metals of which it is composed or by firing a mixture of oxides or carbonates of those metals. The ferrite may be treated with acid to render it less soluble in gastric juices. Ferrites specified include: Fe, Mn, Ni, Cu, Co, Zn, Cu-Zn, Mg, Ni-Zn, Mn-Zn and Fe-Zn ferrites, Fe 3 O 4 , and γ-Fe 2 O 3 . Oxides specified include: BaO (added as BaCO 3 ), Bi 2 O 3 , Ce 2 O 3 , WO 3 , ZrO 2 , SnO 2 , Ta 2 O 5 , Y 2 O 3 , La 2 O 3 , Pr 2 O 3 , Nd 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Gd 2 O 3 , Tb 2 O 3 , Dy 2 O 3 , Ho 2 O 3 and Yb 2 O 3 . The dispersing agent may be starch, sodium alginate or polyvinyl alcohol. Other ingredients specified include water, gum tragacanth and peppermint oil.
GB3000970A 1969-06-20 1970-06-19 Radiographic contrast media Expired GB1315391A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP44048725A JPS4829124B1 (en) 1969-06-20 1969-06-20
JP44048724A JPS4829123B1 (en) 1969-06-20 1969-06-20
JP44091718A JPS4829126B1 (en) 1969-11-15 1969-11-15
JP45040656A JPS4946055B1 (en) 1970-05-13 1970-05-13

Publications (1)

Publication Number Publication Date
GB1315391A true GB1315391A (en) 1973-05-02

Family

ID=27460934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3000970A Expired GB1315391A (en) 1969-06-20 1970-06-19 Radiographic contrast media

Country Status (4)

Country Link
US (1) US3832457A (en)
DE (1) DE2030690C3 (en)
FR (1) FR2053000B1 (en)
GB (1) GB1315391A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310507A (en) * 1978-08-02 1982-01-12 Eastman Kodak Company Contrast agent for radiography
FR2508802A1 (en) * 1981-07-03 1983-01-07 Thomson Csf Magnetic powders for use in hyperthermic treatments - e.g. of tumours, heated by hysteresis in alternating magnetic field
US4957939A (en) * 1981-07-24 1990-09-18 Schering Aktiengesellschaft Sterile pharmaceutical compositions of gadolinium chelates useful enhancing NMR imaging
US4731239A (en) * 1983-01-10 1988-03-15 Gordon Robert T Method for enhancing NMR imaging; and diagnostic use
DE3316703A1 (en) * 1983-05-04 1984-11-08 Schering AG, 1000 Berlin und 4709 Bergkamen ORAL CONTRAST AGENT FOR MRI MRI AND THE PRODUCTION THEREOF
JPH0618789B2 (en) * 1983-06-09 1994-03-16 フィ−ルド・グル−プ・ケミカルズ・ピ−ティ−ワイ・リミテッド Radiopaque agent
US5720939A (en) * 1985-08-15 1998-02-24 Nycomed Imaging As Method of contrast enhanced magnetic resonance imaging using magnetically responsive-particles
US5618514A (en) * 1983-12-21 1997-04-08 Nycomed Imaging As Diagnostic and contrast agent
US5746999A (en) * 1984-11-23 1998-05-05 Schering Aktiengesellschaft Magnetic particles for diagnostic purposes
PT81498B (en) * 1984-11-23 1987-12-30 Schering Ag METHOD FOR PREPARING COMPOSITIONS FOR DIAGNOSTICS CONTAINING MAGNETIC PARTICLES
AU605461B2 (en) * 1986-04-07 1991-01-17 Francois Dietlin New compositions usable in tomo-densitometry
US4770183A (en) * 1986-07-03 1988-09-13 Advanced Magnetics Incorporated Biologically degradable superparamagnetic particles for use as nuclear magnetic resonance imaging agents
GB9106686D0 (en) * 1991-03-28 1991-05-15 Hafslund Nycomed As Improvements in or relating to contrast agents
EP0597865B1 (en) * 1991-08-05 2001-07-25 Mallinckrodt Inc. Heavy metal clusters for use as imaging agents
GB9200388D0 (en) * 1992-01-09 1992-02-26 Nycomed As Improvements in or relating to contrast agents
JP2007511503A (en) * 2003-11-17 2007-05-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Contrast agent for medical imaging technology and use thereof
JP2006073991A (en) * 2004-08-02 2006-03-16 Sony Corp Electromagnetic wave suppressing material, electromagnetic wave suppressing device and electronic equipment
US9155646B2 (en) * 2006-04-27 2015-10-13 Brs Holdings, Llc Composite stent with bioremovable ceramic flakes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US970215A (en) * 1910-06-29 1910-09-13 Oscar Gros Preparation impermeable for roentgen rays.
FR750173A (en) * 1933-01-31 1933-08-05 Process for the preparation of aqueous suspensions of barium sulphate intended for chi-ray examinations and means for carrying out said process
GB657979A (en) * 1948-07-03 1951-10-03 Miles Lab Improvements in or relating to x-ray contrast mediums
US3592185A (en) * 1967-04-18 1971-07-13 Yeda Res & Dev Ferromagnetic contrast media and method of use

Also Published As

Publication number Publication date
DE2030690C3 (en) 1974-06-12
DE2065532B2 (en) 1976-07-01
DE2030690B2 (en) 1973-11-15
US3832457A (en) 1974-08-27
FR2053000A1 (en) 1971-04-16
DE2030690A1 (en) 1971-01-07
DE2065532A1 (en) 1974-05-16
FR2053000B1 (en) 1974-08-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee