Functional thermal imaging apparatus

• US 5,999,842 A
• Filed: 05/29/1997
• Issued: 12/07/1999
• Est. Priority Date: 05/29/1997
• Status: Expired due to Fees

• Current Assignee: Northrop Grumman Corporation
• Original Assignee: Computerized Thermanl Imaging Company
• Inventors: Parsons, Mark David, Harrison, Richard Alan
• Primary Examiner(s): Lateef, Marvin M.
• Assistant Examiner(s): SHAW, SHAWNA JEANNINE
• Application Number:
  US08/864,752
• Time in Patent Office: 922 Days
• Field of Search: 600/473, 600/474, 600/549, 600/407, 378/37, 250/339.04, 250/339.03
• US Class Current: 600/474
• CPC Class Codes: A61B 5/015 By temperature mapping of body part
• CPC Class Codes: A61B 5/4312 Breast evaluation or disorder diagnosis A61B5/0091 takes precedence

Abstract

A thermal imaging apparatus (10) includes a table (12) having an opening 48 through which a prone patient'"'"'s breast (24) can be suspended freely downward. The apparatus (10) further includes an air handling apparatus (14) which chills ambient air and directs the chilled air against the suspended breast (24), a thermal radiation sensor (16), and a mirror assembly (18, 20) which reflects thermal radiation from the suspended breast (24) to the sensor (16).

Claims

1. Apparatus comprising:

a table having an opening through which a prone patient'"'"'s breast can be suspended freely downward;

a thermal radiation sensor;

a mirror assembly configured to reflect thermal radiation from the suspended breast to said sensor, said mirror assembly defining a reflective surface area having an effectively conical configuration oriented to extend circumferentially around the suspended breast; and

an air handling system including an air conditioning unit operative to chill ambient air, said air handling system being operative to direct said chilled air against the suspended breast.

2. Apparatus as defined in claim 1 wherein said mirror assembly further defines a lower reflective surface area oriented to face vertically upward toward the suspended breast and also toward said effectively conical reflective surface area so as to reflect thermal radiation from the suspended breast and also from said effectively conical reflective surface area.

3. Apparatus as defined in claim 1 further comprising an output device operative to produce a thermal image, and a microprocessor responsive to output of said sensor so as to direct said output device to produce a thermal image representative of thermal radiation reflected from the suspended breast to said sensor by said mirror assembly.

4. Apparatus as defined in claim 1 wherein said table has first, second and third openings in a row extending across said table, said first and second openings respectively providing clearance for a patients'"'"' left and right breasts to be suspended freely downward when the patient is in a first prone position on said table, said second and third openings respectively providing clearance for the patient'"'"'s left and right breasts to be suspended freely downward when the patient is in a second, laterally shifted prone position on said table.

5. Apparatus comprising:

a table having an opening through which a prone patient'"'"'s breast can be suspended freely downward;

a thermal radiation sensor;

a mirror assembly configured to reflect thermal radiation from the suspended breast to said sensor, said mirror assembly including a mirror oriented to face horizontally inward toward a top, bottom or side portion of the suspended breast, and to be inclined vertically downward and horizontally outward from the suspended breast; and

an air handling system including an air conditioning unit operative to chill ambient air, said air handling system being operative to direct said chilled air against the suspended breast.

6. Apparatus as defined in claim 5 wherein said mirror assembly further includes a lower mirror oriented to face vertically upward toward the suspended breast and also toward said horizontally facing mirror so as to reflect thermal radiation from the suspended breast and also from said horizontally facing mirror.

7. Apparatus as defined in claim 5 further comprising an output device operative to produce a thermal image, and a microprocessor responsive to output of said sensor so as to direct said output device to produce a thermal image representative of thermal radiation reflected from the suspended breast to said sensor by said mirror assembly.

8. Apparatus as defined in claim 5 wherein said table has first, second and third openings in a row extending across said table, said first and second opening, respectively providing clearance for a patients'"'"' left and right breasts to be suspended freely downward when the patient is in a first prone position on said table, said second and third openings respectively providing clearance for the patient'"'"'s left and right breasts to be suspended freely downward when the patient is in a second, laterally shifted prone position on said table.

9. Apparatus comprising:

a table having first, second and third openings in a row extending across said table, said first and second openings respectively providing clearance for a patients'"'"' left and right breasts to be suspended freely downward when the patient is in a first prone position on said table, said second and third openings respectively providing clearance for the patient'"'"'s left and right breasts to be suspended freely downward when the patient is in a second, laterally shifted prone position on said table;

an air handling system operative to chill ambient air and to direct said chilled air beneath said openings in said table;

a sensor operative to sense temperatures induced by said chilled air on the surface of one of the patient'"'"'s breasts when said one breast is suspended freely downward through said second breast opening; and

a shield assembly configured to block said chilled air from affecting the temperature of the surface of the patient'"'"'s other breast when said other breast is suspended freely downward through either of said first and third breast openings.

10. Apparatus as defined in claim 9 further comprising a mirror assembly configured to reflect thermal radiation from said one breast to said sensor.

11. Apparatus as defined in claim 10 wherein said mirror assembly defines an upper reflective surface area having an effectively conical configuration oriented to extend circumferentially around said one breast.

12. Apparatus as defined in claim 11 wherein said mirror assembly further defines a lower reflective surface area oriented to face vertically upward toward said one breast and also toward said upper reflective surface area so as to reflect thermal radiation from said one breast and also from said upper reflective surface area.

13. Apparatus as defined in claim 12 wherein said table is a free standing structure including a table top and a frame upon which said mirror assembly, said air handling system, and said sensor are mounted beneath said table top.

14. Apparatus comprising:

a table having a pair of openings through which a prone patient'"'"'s breasts can be suspended freely downward;

a thermal radiation sensor;

an air handling system operative to chill ambient air and to direct said chilled air against the suspended breasts; and

a mirror assembly configured to reflect thermal radiation from the suspended breasts to said sensor,

said mirror assembly including a plurality of mirrors oriented to face horizontally inward toward the suspended breasts to reflect thermal radiation from top, bottom and side portions of the suspended breasts to said sensor, and to be inclined vertically downward and horizontally outward from the suspended breasts.

15. Apparatus as defined in claim 14 wherein said mirror assembly further includes a mirror oriented to face vertically upward toward the suspended breasts and also toward said horizontally facing mirrors so as to reflect thermal radiation from the suspended breasts and also from said horizontally facing mirrors.

16. Apparatus comprising:

a table having an opening through which a prone patient'"'"'s breast can be suspended freely downward;

an air handling system including an air conditioning unit operative to chill ambient air, said air handling system being operative to direct said chilled air against the suspended breast;

a sensor operative to sense temperatures induced on the surface of the suspended breast by said chilled air;

said opening being one of a pair of openings through which a prone patient'"'"'s breasts can be suspended freely downward; and

a breast enclosure structure configured to shield one of the suspended breasts from said chilled air.

17. Apparatus as defined in claim 16 wherein said opening is the second of three breast openings arranged in a row extending across said table and is thus located between first and third breast openings in said row, said breast enclosure structure being one of a pair of breast enclosure structures located beneath said first and third breast openings.

18. Apparatus as defined in claim 16 wherein said air conditioning unit is operative to chill said ambient air to a temperature within a range extending from about 50°

F. to about 55°

F.

19. Apparatus as defined in claim 16 wherein said sensor is operative to sense thermal radiation emitted by the suspended breast, said apparatus further comprising a mirror assembly configured to reflect said thermal radiation from the suspended breast to said sensor.