# US 5,699,802 A · Mammography antenna arrangement for NMR examinations of a female breast > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,699,802 A - Document ID: US5699802A - Status: Granted - Kind: A - Application number: 08/536,950 - Filed: 1995-09-29 - Granted: 1997-12-23 - Earliest claimed: 1994-09-29 - Assignees: Siemens Aktiengesellschaft - Inventors: Wilhelm Duerr - Web page: https://patentgrep.com/patent/US5699802A ## CPC - G01R 33/422: of the radio frequency field - A61B 5/055: involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging - A61B 5/415: {the glands, e.g. tonsils, adenoids or thymus} - A61B 5/708: {Breast positioning means} - G01R 33/34046: {Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils} - G01R 33/3678: {involving quadrature drive or detection, e.g. a circularly polarized RF magnetic field} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract In a mammography antenna arrangement for magnetic resonance examinations of a female breast, a conductor arrangement forms a closed circuit and surrounds a receptacle opening for the female breast. The receptacle opening lies in a surface that is essentially horizontally directed. Two arcuate conductor segments have their ends connected to the conductor arrangement via electrical connecting locations and surround an examination space that is fashioned for the acceptance of the female breast. The two conductor segments are respectively arranged in vertical, planes, the two planes being perpendicular to one another. ## Claims ### Claim 1 A mammography antenna arrangement for conducting a magnetic resonance examination of a female breast comprising: first and second arcuate conductors, each arcuate conductor having ends and a zenith between said ends; a further conductor, said further conductor forming a closed circuit and defining a receptacle opening, said ends of said first and second arcuate conductors being electrically connected to said further conductor and adapted to receive a female breast when inserted in said receptacle opening, said first and second arcuate conductors being connected to said further conductor at respective junctions successively disposed along said further conductor with said arcuate conductors respectively disposed in different planes, said planes being disposed perpendicularly to each other, said arcuate conductors being identical and each lying symmetrical about a symmetry axis, said arcuate conductors, being connected to said further conductor with their respective symmetry axes coinciding; a plurality of capacitors connected in said further conductor with at least one capacitor disposed between each pair of successive junctions; a first signal terminal connected across a first of said capacitors; and a second signal terminal connected across a second of said capacitors, said first and second capacitors sharing a common one of said junctions and said first and second signal terminals being decoupled from each other. ### Claim 2 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said arcuate conductors are connected to said further conductor with said arcuate conductors overlapping at a location intersecting the coinciding symmetry axes. ### Claim 3 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said arcuate conductors comprise ribbon conductors. ### Claim 4 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said further conductor is at least partially circular. ### Claim 5 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said further conductor is at least partially disposed in a plane. ### Claim 6 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said further conductor and said arcuate conductors, in combination, form an examination space communicating with said receptacle opening matched to the anatomy of an average female breast. ### Claim 7 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said further conductor comprises a distended portion. ### Claim 8 (depends on 7) A mammography antenna arrangement as claimed in claim 7 wherein said arcuate conductors and said further conductor, in combination, form an examination space communicating with said receptacle opening, and wherein said distended portion of said further conductor is disposed laterally from said receptacle opening and facing away from said examination space. ### Claim 9 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said arcuate conductors and said further conductor, in combination, form an examination space communicating with said receptacle opening, and said mammography antenna arrangement further comprising a conductor loop disposed laterally from said receptacle opening and facing away from said examination space. ### Claim 10 (depends on 1) A mammography antenna arrangement as claimed in claim 1 wherein said further conductor, said arcuate conductors, said capacitors and said first and second signal terminals comprise a first antenna assembly, and said antenna arrangement further comprising a second antenna assembly, identical to said first antenna assembly and disposed next to said first antenna assembly, and a radio-frequency shield disposed between said first and second antenna assemblies. ### Claim 11 A mammography antenna arrangement for conducting a magnetic resonance examination of a female breast comprising: first and second arcuate conductors, each arcuate conductor having ends and a zenith between said ends; a further conductor, said further conductor forming a closed circuit and defining a receptacle opening, said ends of said first and second arcuate conductors being electrically connected to said further conductor and adapted to receive a female breast when inserted in said receptacle opening, said first and second arcuate conductors being connected to said further conductor at respective junctions successively disposed along said further conductor with said arcuate conductors respectively disposed in different planes, said planes being disposed perpendicularly to each other, said arcuate conductors being identical and each being symmetrical about a symmetry axis, said arcuate conductors being connected to said further conductor with their respective symmetry axes coinciding; a plurality of capacitors respectively connected in said first and second arcuate conductors, with at least one capacitor being connected in each arcuate conductor between a junction of that arcuate conductor with said further conductor and the zenith of that arcuate conductor; a first signal terminal connected across a first of said capacitors; and a second signal terminal connected across a second of said capacitors and said first and second signal terminals being decoupled from each other. ### Claim 12 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said arcuate conductors are connected to said further conductor with said arcuate conductors overlapping at a location intersecting the coinciding symmetry axes. ### Claim 13 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said arcuate conductors comprise ribbon conductors. ### Claim 14 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said further conductor is at least partially circular. ### Claim 15 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said further conductor is at least partially disposed in a plane. ### Claim 16 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said further conductor and said arcuate conductors, in combination, form an examination space communicating with said receptacle opening matched to the anatomy of an average female breast. ### Claim 17 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said further conductor comprises a distended portion. ### Claim 18 (depends on 17) A mammography antenna arrangement as claimed in claim 17 wherein said arcuate conductors and said further conductor, in combination, form an examination space communicating with said receptacle opening, and wherein said distended portion of said further conductor is disposed laterally from said receptacle opening and facing away from said examination space. ### Claim 19 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said arcuate conductors and said further conductor, in combination, form an examination space communicating with said receptacle opening, and said antenna arrangement further comprising a conductor loop disposed laterally from said receptacle opening and facing away from said examination space. ### Claim 20 (depends on 11) A mammography antenna arrangement as claimed in claim 11 wherein said further conductor, said arcuate conductors, said capacitors and said first and second signal terminals comprise a first antenna assembly, and said antenna arrangement further comprising a second antenna assembly, identical to said first antenna assembly and disposed next to said first antenna assembly, and a radio-frequency shield disposed between said first and second antenna assemblies.