# US 10,441,177 B2 · High definition thermal imaging for medical applications

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- Number: US 10,441,177 B2
- Document ID: US10441177B2
- Status: Granted
- Kind: B2
- Application number: 15/109,140
- Filed: 2015-08-07
- Published: 2016-11-03
- Granted: 2019-10-15
- Earliest claimed: 2014-10-30
- Assignees: BAE Systems Information and Electronic Systems Integration Inc.; Mark B. Lyles
- Applicants: BAE Systems Information and Electronic Systems Integration Inc.; Mark B. Lyles
- Inventors: John R. Franzini; Mark B. Lyles; Robert H. Murphy
- Web page: https://patentgrep.com/patent/US10441177B2

## CPC

- A61B 5/015: {By temperature mapping of body part}
- A61B 5/0077: {Devices for viewing the surface of the body, e.g. camera, magnifying lens}
- A61B 5/7203: {for noise prevention, reduction or removal}
- A61B 5/02042: {Determining blood loss or bleeding, e.g. during a surgical procedure}
- A61B 5/445: {Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore}
- A61B 5/4504: {Bones (A61B5/4547 takes precedence)}
- A61B 5/489: {Blood vessels}
- A61B 5/725: {using specific filters therefor, e.g. Kalman or adaptive filters (specific diagnostics methods using using bioelectric or biomagnetic signals A61B5/316)}
- A61B 2562/18: Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
- A61B 2576/00: Medical imaging apparatus involving image processing or analysis (A61B1/00009, A61B6/52 and A61B8/52 take precedence)
- G16H 30/40: for processing medical images, e.g. editing
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA

## Abstract

An apparatus for high resolution thermal imaging in medical applications has a single channel EMI shielded sensor, remote cable, and laptop controller with real time image processing software. The apparatus provides high resolution, real-time viewable infrared (IR) images with a variable focus distance adjustable from six inches to infinity. The present invention enables crisp, clear imagery of the thermal band for greater awareness of everything within the field of view. Various medical applications which would benefit from high resolution thermal imagery are presented.

## Claims

### Claim 1

A device for high definition thermal imaging and close focus viewing from 6 inches or more distance in medical applications, said apparatus comprising:
a single channel uncooled thermal sensor with low noise characteristics and EMI shielding;
a remote cable; and
a laptop controller with enhanced real time image processing software providing thermal image processing of an output of the uncooled thermal sensor to provide thermal scene information, wherein the thermal image processing includes a spatial bandpass filter and a scene based noise suppression system for removing low frequency spatial noise and high frequency spatial noise,
wherein the enhanced real time image processing software is used as an aid for at least one of:
detecting a presence of abdominal aortic aneurysms;
differentiating between burn classifications during burn treatments;
assisting Mohs surgery and dermatological skin treatments; and
detecting cardiovascular issues including at least one of: venal blockage, arterial blockage, frost bite, inflammation, infection, and sclerosis.

### Claim 2 (depends on 1)

The device of claim 1, wherein the enhanced real time image processing software further comprises an imperceptible amount of delay in a displayed image, wherein the imperceptible amount of delay is less than 0.1 seconds.

### Claim 3 (depends on 1)

The device of claim 1, wherein the enhanced real time image processing software is used to discern live tissue from dead tissue in an imaging of skin tags during plastic surgery.

### Claim 4 (depends on 1)

The device of claim 1, wherein the enhanced real time image processing software is used during brain tumor laser ablation treatment for thermal imaging of dead tissue.

### Claim 5 (depends on 1)

The device of claim 1, wherein the sensor is a 12 micron sensor.

### Claim 6 (depends on 1)

The device of claim 1, wherein the sensor has a pixel spacing from 10 microns to 17 microns.

### Claim 7 (depends on 1)

The device of claim 1, wherein said sensor has a housing including a pair of co-joined portions and EMI shielding placed between said co-joined portions.

### Claim 8 (depends on 7)

The device of claim 7, wherein said pair of co-joined portions further comprises an end, wherein the end has apertures there through and recesses surrounding said apertures, further comprising an electromagnetic interference reducing material in said apertures.

### Claim 9 (depends on 8)

The device of claim 8, wherein said apertures house connectors to said sensor through said end at a point at which electromagnetic interference reducing material is present.

### Claim 10 (depends on 1)

The device of claim 1, wherein the scene based noise suppression system further comprises a low-frequency spatial noise removal system.

### Claim 11 (depends on 1)

The device of claim 1, wherein the scene based noise suppression system further comprises a scene-based high-frequency spatial noise removal module.

### Claim 12 (depends on 1)

The device of claim 1, wherein the output of the uncooled thermal sensor is high resolution long wave IR.

### Claim 13 (depends on 1)

The device of claim 1, further comprising a pedestal subtraction unit and a thermal fusion image processing system.

### Claim 14

A method for providing a crisp, ultra-sharp, infrared image suitable for medical imaging in a hand carryable package comprising the steps of:
providing a portable, lightweight high-resolution infrared sensor;
providing a housing for the infrared sensor, wherein the housing is EMI shielded;
using a processor, displaying an infrared image on a display screen coupled to the sensor; and
executing post processing algorithms with the processor for processing an output of the infrared sensor to provide the displayed infrared image, further comprising thermal image processing to enhance thermal scene information, wherein the thermal image processing includes a spatial bandpass filter and a scene based noise suppression system for removing low frequency spatial noise and high frequency spatial noise.

### Claim 15 (depends on 14)

The method of claim 14, further including thermal fusion image processing and a system for keeping all parts of the displayed image out of saturation.