WO2002078547A1 - Detecteur de carcinome mammaire - Google Patents
Detecteur de carcinome mammaire Download PDFInfo
- Publication number
- WO2002078547A1 WO2002078547A1 PCT/JP2002/002370 JP0202370W WO02078547A1 WO 2002078547 A1 WO2002078547 A1 WO 2002078547A1 JP 0202370 W JP0202370 W JP 0202370W WO 02078547 A1 WO02078547 A1 WO 02078547A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- breast
- light
- light source
- breast cancer
- pressing member
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4312—Breast evaluation or disorder diagnosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0041—Detection of breast cancer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0091—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for mammography
Definitions
- the present invention relates to a technology for non-invasively detecting breast cancer tissue in a living body using light.
- X-ray mammography is the most common non-invasive breast cancer detection device. This device detects breast cancer tissue by sandwiching the breast between two plates from above and below or from the left and right, and performing X-ray photography from the direction of the plate.
- Japanese Patent Application Laid-Open No. 5-223738 discloses a technique in which a laser light source irradiates a sample containing a fluorescent light source with excitation light, and the fluorescent image is obtained by an imaging means located at a position distant from the sample. .
- the present invention has been made to solve the above problems, and has as its object to provide a breast cancer detection device capable of safely and easily detecting breast cancer without causing pain to a subject. .
- the breast cancer detection device has a pressing surface pressed against the breast of the subject, and a translucent breast pressing that allows the breast pressed against the body to be observed from the opposite surface of the pressing surface.
- a member light source means for irradiating light of a predetermined wavelength to at least a part of the breast in a range where the pressing surface is pressed, and having sensitivity to light from the breast caused by light emitted from the light source means, Imaging means for acquiring an image of the breast via a breast pressing member, wherein breast cancer is detected from the image of the breast acquired by the imaging means.
- the breast cancer detection device Since the breast cancer detection device according to the present invention has such a configuration, it is possible to reduce the thickness of the breast in the direction perpendicular to the pressing surface by pressing the breast against the body with the breast pressing member. It is said.
- light of a predetermined wavelength is irradiated from the light source to the breast in the range where the pressing surface is pressed in a state where the breast is thin, it is possible to irradiate light to the deep part of the breast.
- light from the breast caused by the irradiation light for example, reflected light from breast cancer tissue, is acquired by the imaging means from the opposite side of the pressing surface of the breast pressing member, and breast cancer in the breast is detected from the image. Is done.
- a reference mark portion on which the nipple is located is provided on the pressing surface of the breast pressing member, and when the reference mark portion is superimposed on the image of the breast acquired by the imaging means, based on the reference mark portion, Know the exact location of the breast cancer.
- the light source means may be a ring-shaped light source arranged on the pressing surface side of the breast pressing member so as to surround the pressing surface. It does not become an obstacle when observing from the opposite side of the pressing surface.
- the light source means is a light source for irradiating light to the inside of the translucent member constituting the breast pressing member, so that the light from the light source means is irradiated from the contact surface with the pressing surface toward the breast. Then, it is possible to irradiate light to the breast in contact with the pressing surface.
- the light source means is a light source that emits light having a wavelength different from the absorption rate in the breast tissue and the absorption rate in the breast cancer tissue
- the imaging means is reflection, scattering, and diffusion light from at least one of the breast tissue and the breast cancer tissue.
- the light source means is a light source for irradiating light having a wavelength to excite the optical contrast agent having a property of selectively aggregating in breast cancer tissue, and the imaging means has sensitivity to the fluorescence wavelength of the optical contrast agent. If the system is configured to acquire a fluorescence image of the breast of the subject to which the contrast agent has been administered, an optical contrast agent is injected into the subject in advance, and the breast is irradiated with light having an excitation wavelength. A fluorescence image of the optical contrast agent aggregated on the breast cancer tissue is obtained by the imaging means.
- the breast pressing member may have a filter that selectively transmits light having a fluorescence wavelength of the optical contrast agent. In this case, a clearer fluorescent image is obtained by the imaging means.
- the light source means is a light source for irradiating light having a wavelength for exciting the optical contrast agent having a property of selectively aggregating to breast cancer tissue, and the imaging means has sensitivity to the excitation light wavelength of the optical contrast agent; It may be configured to acquire an excitation light image of the breast of the subject to which the optical contrast agent has been administered.
- a photocontrast agent is injected into the subject in advance, and then the breast is irradiated with light at the excitation wavelength.
- Excitation light applied to the breast excites and fluoresces aggregated optical contrast agents in breast cancer tissue, but is reflected, scattered, and diffused in healthy breast tissue. Since the reflected, scattered, and diffused light among the light due to the excitation light has the same wavelength as the excitation light, it is obtained as an excitation light image by an imaging unit having sensitivity to the excitation light wavelength. Then, the excitation light image portion is detected as healthy breast tissue, and the missing portion of the excitation light image is detected as breast cancer tissue.
- the breast pressing member may include a filter that selectively blocks light having a fluorescence wavelength of the optical contrast agent. In this case, a clearer excitation light image is acquired by the imaging means.
- the breast pressing member may include a reflecting unit that selectively reflects light having a wavelength emitted from the light source unit from the pressing surface to the breast side of the subject. In this case, when light is irradiated from the light source means to the breast pressing member, the light selectively reflected by the reflecting means is irradiated to the breast from the pressing surface, so that the part of the breast in contact with the pressing surface is exposed. It is possible to irradiate light.
- FIG. 1 is a schematic configuration diagram of an embodiment according to the present invention.
- FIG. 2 is a cross-sectional view of the breast pressing member according to the first embodiment in a breast side surface direction.
- FIG. 3 is a breast side front view of the breast pressing member according to the first embodiment.
- FIG. 4 is an excitation and fluorescence characteristic diagram of the optical contrast agent used in the second to fourth embodiments.
- FIG. 5 is a cross-sectional view of the breast pressing member according to the second embodiment in the side direction of the breast.
- FIG. 6 is a cross-sectional view of a breast pressing member according to a fourth embodiment in a breast side direction.
- FIG. 7 is a cross-sectional view of a breast pressing member provided with a light source according to the first modification in the breast side direction
- FIG. 8 is a front view of the breast pressing member provided with the light source according to the first modification.
- FIG. 9 is a cross-sectional view in the breast side direction of a breast pressing member having a light source according to the second modification.
- C FIG. 10 is a front view of the breast pressing member having the light source according to the second modification.
- FIG. 1 is a schematic configuration diagram showing a breast cancer detection device according to the first embodiment of the present invention.
- the breast pressing member 1 has a disk shape.
- Fig. 2 shows a view from the side of the breast
- Fig. 3 shows a view from the breast side.
- a depression is provided on the pressing surface 4 as a reference mark portion 5, and by inserting a nipple into the depression, the relative positional relationship between the breast and the breast pressing member 1 is always the same.
- the imaging means 3 is a CCD camera, which is located on the opposite side of the breast with respect to the breast pressing member 1 and is arranged so as to be able to image the breast via the breast pressing member 1.
- the image obtained by the imaging means 3 is displayed on a monitor or the like or recorded as data.
- the light source means 2 in which laser diodes are arranged in a ring shape is arranged at a position surrounding the periphery of the breast.
- the light emitted from the light source 2 to the breast has a wavelength that is more easily absorbed by the breast tissue than by the breast cancer tissue.
- the wavelength of the irradiation light used in the present embodiment is preferably in the range of 600 nm to 1 ⁇ considering the effects of scattering and diffusion in the breast, but the absorption rate in the breast cancer tissue and the absorption in the breast cancer tissue are suitable. Any wavelength may be used as long as the wavelengths have different rates.
- the reflected light, the scattered light, and the diffused light of only the breast cancer tissue from the breast are acquired by the imaging means 3 via the translucent breast pressing member 1. Then, the acquired image is displayed on a monitor or the like, so that breast cancer is detected. Where breast cancer is detected In this case, the position, size, and the like of the breast cancer are measured based on the reference mark portion 5 of the pressing surface 4 superimposed on the acquired image.
- the wavelength of the irradiation light is a wavelength that is more easily absorbed by the breast cancer tissue than the breast tissue, and even when the reflected, scattered, or diffused light from the breast tissue is acquired by the imaging unit 3, the region where the irradiation light is absorbed is detected. As a result, the presence, location, size, etc. of breast cancer are also confirmed.
- an optical contrast agent (Cardio Green) having excitation and fluorescence characteristics as shown in FIG. 4 is used.
- the present optical contrast agent is excited by light having a wavelength of about 805 nm,
- FIG. 5 shows a view of the breast pressing member 1 from the side of the breast. Except that the opposite surface of the pressing surface 4 is covered with the filter 6 that transmits only the light of the fluorescence wavelength of the optical contrast agent (around 8335 nm), the breast pressing member 1 of the first embodiment is the same as that of the first embodiment. Is the same.
- the optical contrast agent when the optical contrast agent is injected into the subject to selectively aggregate the breast cancer tissue, and the breast is irradiated with excitation light having a central wavelength of 805, the optical contrast agent in the breast cancer tissue becomes approximately 835 nm. Fluoresce at a wavelength of The fluorescence of the optical contrast agent is acquired by the imaging means 3 having sensitivity to the fluorescence wavelength via the breast pressing member 1. The fluorescent image is observed with a monitor or the like, and the presence, location, size, etc. of breast cancer is confirmed.
- the arrangement of the breast pressing member 1, the light source device 2, and the imaging device 3 is the same as in the first and second embodiments.
- This embodiment is different from the second embodiment in that the imaging device 3 has sensitivity to the excitation light wavelength, and the filter 6 of the breast pressing member 1 blocks only the fluorescence wavelength of the optical contrast agent.
- the subject is previously injected with the same optical contrast agent as in the second embodiment, and then the light source
- the light of the wavelength (805 nm) that excites the optical contrast agent from step 2 is applied to the breast.
- the breast cancer tissue to which the optical contrast agent is aggregated emits light of a fluorescence wavelength (835 nm), and healthy breast tissue emits reflected, scattered, and diffused light of the same wavelength as the excitation light.
- the fluorescence is blocked by the filter 6 of the breast pressing member 1, and the imaging device 3 is sensitive to the light of the excitation wavelength, so that the imaging device 3 obtains an excitation light image caused by reflection, scattering, and diffused light. .
- the excitation light image is confirmed on a monitor or the like, and the excitation light image portion is detected as healthy breast tissue, and the missing portion of the excitation light image is detected as breast cancer tissue.
- FIG 4 shows a fourth embodiment of the breast cancer detection device according to the present invention.
- the arrangement of the breast pressing member 1 and the imaging device 3 with respect to the breast is the same as in the first to third embodiments.
- This embodiment also uses the same optical contrast agent as in the second and third embodiments.
- FIG. 6 shows a view from the side of the breast of the breast pressing member 1 constituting the breast cancer detection device of the present embodiment. As shown in the figure, the surface opposite to the pressing surface 4 is covered with the reflection film 7.
- the reflection film 7 has a property of reflecting light having an excitation wavelength (805 nm) of the optical contrast agent and transmitting light having a fluorescence wavelength (835 nm).
- the excitation light from the light source 2 is applied to the inside of the breast pressing member 1, and reflected on the pressing surface 4 via the reflective film 7. That is, the excitation light is applied to the breast via the pressing surface 4.
- the excitation light applied to the breast excites the optical contrast agent that has aggregated in the breast cancer tissue of the subject and causes it to fluoresce. Only the fluorescence is acquired by the imaging means 3 via the reflective film, and is displayed on a monitor or the like, and the presence, location, size, and the like of the breast cancer are confirmed.
- the light source 2 may be attached to the breast pressing member 1.
- FIG. 7 is a view of Modification Example 1 from the direction of the breast side
- FIG. 8 is a view from the side of the breast.
- the breast of Modification 2 Fig. 9 shows a view from the side
- Fig. 10 shows a view from the breast.
- the operation is the same as when the breast pressing member 1 and the light source 2 are separated.
- the breast pressing member 1 is not limited to a disk shape, and may be an elliptical disk or a square disk.
- the material thereof may be transparent or colored as long as it is transmissive to light from the light source or the breast.
- the reference mark section 5 is not limited to the depression, and may be any as long as the reference position can be specified. It is desirable that the shape of the pressing surface 4 takes into account the shape and deformation of the breast, such as a flat surface or a curved surface. May be just the breast.
- the light source means may be a light emitting diode
- the imaging means may be an image intensifier (II).
- This invention can be utilized for the apparatus which detects the breast cancer tissue in a living body.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60232228T DE60232228D1 (de) | 2001-03-14 | 2002-03-13 | Mammakarzinomdetektor |
EP02705140A EP1369086B1 (en) | 2001-03-14 | 2002-03-13 | Breast carcinoma detector |
US10/471,015 US7725170B2 (en) | 2001-03-14 | 2002-03-13 | Breast carcinoma detector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001072510A JP4781548B2 (ja) | 2001-03-14 | 2001-03-14 | 乳がん検出装置 |
JP2001-72510 | 2001-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002078547A1 true WO2002078547A1 (fr) | 2002-10-10 |
Family
ID=18930080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/002370 WO2002078547A1 (fr) | 2001-03-14 | 2002-03-13 | Detecteur de carcinome mammaire |
Country Status (5)
Country | Link |
---|---|
US (1) | US7725170B2 (ja) |
EP (1) | EP1369086B1 (ja) |
JP (1) | JP4781548B2 (ja) |
DE (1) | DE60232228D1 (ja) |
WO (1) | WO2002078547A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008029354A2 (en) | 2006-09-07 | 2008-03-13 | Koninklijke Philips Electronics N.V. | Optical tomography measurement using an adapted brim for the receiving volume |
US20100067011A1 (en) * | 2006-11-02 | 2010-03-18 | Koninklijke Philips Electronics N.V. | Ambient light reduction for optical tomography |
EP2523596A4 (en) * | 2010-01-14 | 2015-02-25 | Univ California | DEVICES, SYSTEMS AND METHODS FOR DETECTING AND REDUCING OR PREVENTING THE ENTRY OF INFLAMMATORY MEDIATORS IN LACTIFIED CONDUITS |
JP5848590B2 (ja) * | 2011-12-02 | 2016-01-27 | 浜松ホトニクス株式会社 | 乳房撮像装置 |
JPWO2017047553A1 (ja) | 2015-09-18 | 2018-09-27 | 独立行政法人労働者健康安全機構 | 撮像方法、撮像装置、撮像システム、手術支援システム、及び制御プログラム |
US11882944B1 (en) | 2021-02-12 | 2024-01-30 | Rion Hilliard | Diaper changing device |
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2001
- 2001-03-14 JP JP2001072510A patent/JP4781548B2/ja not_active Expired - Lifetime
-
2002
- 2002-03-13 WO PCT/JP2002/002370 patent/WO2002078547A1/ja active Application Filing
- 2002-03-13 US US10/471,015 patent/US7725170B2/en not_active Expired - Fee Related
- 2002-03-13 DE DE60232228T patent/DE60232228D1/de not_active Expired - Lifetime
- 2002-03-13 EP EP02705140A patent/EP1369086B1/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US7725170B2 (en) | 2010-05-25 |
DE60232228D1 (de) | 2009-06-18 |
US20040097810A1 (en) | 2004-05-20 |
EP1369086B1 (en) | 2009-05-06 |
EP1369086A4 (en) | 2006-09-06 |
EP1369086A1 (en) | 2003-12-10 |
JP2002272745A (ja) | 2002-09-24 |
JP4781548B2 (ja) | 2011-09-28 |
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