Examination marker and examination marker set
An examination marker for use in diagnostic imaging using microwaves. The examination marker includes a marker main body to be attached to an examination target. The marker main body is capable of displaying, on the marker main body, an index for use in scanning the examination target marker and is deformable following the shape of the examination target. The marker main body has a relative permittivity of 10 or less to microwaves at a frequency of 1 GHz.
1 . An examination marker for use in diagnostic imaging using microwaves, wherein
the examination marker comprises a marker main body to be attached to a human breast,
the marker main body configured to display an index on the marker main body for use in scanning the human breast and to deform following a shape of the human breast,
the marker consists of (a) a non-conductive base film that has a front surface and includes a scanned part that is to be scanned with a probe to obtain a signal for use in image diagnosis and a peripheral part that surrounds the scanned part, as seen from a viewpoint facing the front surface; (b) a verification part that is positioned at the peripheral part and consists of a conductive resin composition, (c) a coordinate grid,
the base film has a relative permittivity of 10 or less to microwaves at a frequency of 1 GHz,
the base film has a thickness of 5 to 300 μm; and
a microwave transmittance of the verification part is lower than a microwave transmittance of the base film.
2 . The examination marker of claim 1 , wherein
the base film has a tensile elongation at break of 130% or more and a 100% elongation tensile strength of 4N/cm or less.
3 . The examination marker of claim 1 , wherein
the marker main body has a moisture permeability according to JIS Z 0208-1976 of 750 g/m 2 day or more at a temperature of 40° C. and a relative humidity of 90%.
4 . The examination marker of claim 1 , wherein
the coordinate grid includes a plurality of grid lines that extends along a first direction in which the examination target is to be scanned and a plurality of grid lines that is aligned along a second direction orthogonal to the first direction, and
the plurality of grid lines includes a first grid line having a first color and a second grid line having a second color different from the first color, and
the first grid line and the second grid line are alternately aligned along the second direction.
5 . The examination marker of claim 1 ,
the coordinate grid includes a plurality of grid lines that extends along a first direction in which the examination target is to be scanned and is aligned along a second direction orthogonal to the first direction, and
the plurality of grid lines has the same color.
6 . The examination marker of claim 1 , further comprising a marker indicating predetermined coordinates in the coordinate grid.
7 . The examination marker of claim 1 , wherein
the verification part is a print layer, and
the print layer is made of a cured body of the conductive resin composition that is transparent.
8 . The examination marker of claim 1 , wherein
the verification part includes a first print layer and a second print layer that covers the first print layer as seen from a viewpoint facing the front surface,
the first print layer is a cured body of the colored conductive resin composition, and
the second print layer is a cured body of a non-conductive resin composition that has a color capable of concealing the first print layer.
9 . The examination marker of claim 1 , wherein
the verification part includes a first print layer and a pair of second print layers,
in a thickness direction of the first print layer, the pair of second print layers sandwiches the first print layer,
the first print layer is a cured body of the colored conductive resin composition,
the second print layers are cured bodies of a non-conductive resin composition, and
the second print layers are capable of concealing the first print layer.
10 . The examination marker of claim 1 , wherein
as seen from a viewpoint facing the front surface, the base film has a square shape,
the peripheral part has an annular shape including an edge of the base film, and
the verification part is positioned at a corner of the base film.
11 . An examination marker set, comprising:
the examination marker of claim 1 ; and
an auxiliary marker that is positioned between the examination marker and an examination target during diagnostic imaging using microwaves and is pressed by the examination marker toward the examination target, wherein
the verification part includes a first verification part,
the auxiliary marker includes:
a non-conductive marker main body;
a protective film that is laminated on the marker main body so as to be peelable from the marker main body; and
a second verification part that is positioned on the protective film and includes a conductive resin composition, wherein
a microwave transmittance of the second verification part is lower than a microwave transmittance of a laminated body of the marker main body and the protective film.
12 . The examination marker of claim 1 , wherein the base film has a tensile elongation at break of 130% or more and a 100% elongation tensile strength of 4N/cm or less and the marker main body has a moisture permeability according to JIS Z 0208-1976 of 750 g/m 2 day or more at a temperature of 40° C. and a relative humidity of 90%.
13 . The examination marker of claim 1 , wherein the base film has a tensile elongation at break of 130% or more and a 100% elongation tensile strength of 4N/cm or less and wherein as seen from a viewpoint facing the front surface, the base film has a square shape,
the peripheral part has an annular shape including an edge of the base film, and
the verification part is positioned at a corner of the base film.
14 . The examination marker of claim 1 , wherein the marker main body has a moisture permeability according to JIS Z 0208-1976 of 750 g/m 2 day or more at a temperature of 40° C. and a relative humidity of 90% and wherein as seen from a viewpoint facing the front surface, the base film has a square shape,
the peripheral part has an annular shape including an edge of the base film, and
the verification part is positioned at a corner of the base film.
15 . The examination marker of claim 1 , wherein the base film has a tensile elongation at break of 130% or more and a 100% elongation tensile strength of 4N/cm or less, the marker main body has a moisture permeability according to JIS Z 0208-1976 of 750 g/m 2 day or more at a temperature of 40° C. and a relative humidity of 90% and wherein as seen from a viewpoint facing the front surface, the base film has a square shape,
the peripheral part has an annular shape including an edge of the base film, and
the verification part is positioned at a corner of the base film.
16 . An examination marker for use in diagnostic imaging using microwaves, wherein
the examination marker comprises a marker main body to be attached to a human breast,
the marker main body configured to display an index on the marker main body for use in scanning the human breast and to deform following a shape of the human breast,
the marker consists of (a) a non-conductive base film that has a front surface and includes a scanned part that is to be scanned with a probe to obtain a signal for use in image diagnosis and a peripheral part that surrounds the scanned part, as seen from a viewpoint facing the front surface; (b) a verification part that is positioned at the peripheral part and consists of a conductive resin composition, (c) a coordinate grid and (d) an adhesive layer,
the base film has a relative permittivity of 10 or less to microwaves at a frequency of 1 GHz,
the base film has a thickness of 5 to 300 μm; and
a microwave transmittance of the verification part is lower than a microwave transmittance of the base film.