Multimode, multispectral imaging system

• US 6,009,340 A
• Filed: 03/16/1998
• Issued: 12/28/1999
• Est. Priority Date: 03/16/1998
• Status: Expired due to Term

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Corporation
• Inventors: Hsia, Yukun
• Primary Examiner(s): Lateef, Marvin M.
• Assistant Examiner(s): Imam, Ali M.
• Application Number:
  US09/039,968
• Time in Patent Office: 652 Days
• Field of Search: 600/473, 600/474, 600/476, 364/413, 364/414, 364/115, 382/6, 382/22, 358/113
• US Class Current: 600/407
• CPC Class Codes: A61B 1/046 for infrared imaging
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons

Abstract

A multispectral imaging system for generating imagery from a broad range of electromagnetic radiation. In a preferred embodiment, the system comprises an image processor unit having a plurality of dedicated inputs formed thereon, each of which connectable to a respective one of a plurality of sensors wherein each sensor is designed to detect wavelengths emanating from a specific spectral region. The image processor unit receives data from a respective sensor, processes such data, and generates an output that is fed to a multimedia controller and computer, the latter being designed to either digitally store, display or provide a printout of the imaging data. In a preferred embodiment, the multimedia controller computer is further designed to transfer such imagery data to a variety of data links to users interfacing with the imaging system. The system may further be modified to accommodate endoscopic sensors for use in procedures related thereto.

Claims

1. A multispectral imaging apparatus for non-invasive monitoring of a body organ in vivo comprising:

a) a plurality of radiation sensor devices for detecting radiation from a scene of said body organ wherein each respective sensor detects a range of wavelengths falling within a spectral band selected from the group consisting of ultraviolet, visible, near infrared, midwave infrared, and longwave infrared radiation and generating a signal corresponding thereto;

b) an image processor unit having a plurality of dedicated input ports formed thereon for connecting with respective ones of said sensors, said image processor unit being operable to simultaneously receive data from at least two of said sensors from at least two dissimilar spectral bands wherein at least one of the spectral band is ultraviolet, and process said signals generated by said sensors and convert said signals to imagery data related to said scene of said organ;

c) a multimedia controller electrically connected to the image processor unit for receiving said imagery data therefrom and displaying an image of said scene.

2. The apparatus from claim 1 wherein said sensor responsive to ultraviolet radiation is responsive to wavelengths ranging from 250 to 400 nanometers.

3. The apparatus from claim 1 wherein said sensor responsive to midwave infrared sensor is responsive to wavelengths ranging from 3 to 5 micrometers.

4. The apparatus from claim 1 wherein said sensor responsive to longwave infrared sensor is responsive to wavelengths ranging from 8 to 12 micrometers.

5. The apparatus from claim 1 wherein said system includes a sensor responsive to visible and near infrared radiation having wavelengths ranging from 400 nanometers to 1 micrometer.

6. The apparatus of claim 1 wherein said multimedia controller is further operable to store and retrieve said imagery data received from said image processor unit.

7. The apparatus of claim 1 further comprising:

d) a printer connectable to said multimedia controller for printing imagery data related to said scene of said organ.

8. A method for non-invasively generating images of a scene of a body organ in vivo comprising the steps:

a) detecting radiation reflected from said scene of said body organ by at least two of a plurality of sensors wherein one of said sensors is designed to detect ultraviolet radiation and the respective other sensor is designed to detect a wavelength falling within a specific spectral band selected from the group consisting of visible, near infrared, midwave infrared, and longwave infrared radiation;

b) generating first and second signals corresponding to said reflected radiation detected by at least two of said plurality of sensors;

c) fusing said first and second signals to produce a resultant signal;

d) processing and converting said resultant signal to medical image data related to said scene of said organ; and

e) generating a visual image of said scene of said organ from medical image data.

9. Method of claim 8 wherein in step a), said sensors are provided to detect radiation falling within ultraviolet, visible and near infrared, midwave infrared, and longwave infrared spectral regions.

10. Method of claim 9 wherein in step a), said ultraviolet spectral region ranges from 250 to 400 nanometers, said visible and near infrared spectral region ranges from 400 nanometers to 1 micrometer, said midwave infrared spectral region ranges from 3 to 5 micrometers and said longwave infrared spectral region ranges from 8 to 12 micrometers.

11. The method of claim 8 wherein in step d), said imagery data received from step c) is stored into a memory.

12. The method of claim 8 wherein in step d), said imagery data is printed out via a printer.