# US 2014/0198131 A1 · Method and device for imaging a region of interest

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- Number: US 2014/0198131 A1
- Document ID: US20140198131A1
- Status: Published application
- Kind: A1
- Application number: 14/122,776
- Filed: 2012-06-04
- Published: 2014-07-17
- Earliest claimed: 2011-06-02
- Assignees: The Research Foundation of State University of New York
- Inventors: Stephen Rudin; Daniel R. Bednarek
- Web page: https://patentgrep.com/patent/US20140198131A1

## CPC

- G09G 5/377: for mixing or overlaying two or more graphic patterns (G09G5/02, G09G5/397 take precedence)
- A61B 6/12: Arrangements for detecting or locating foreign bodies
- A61B 6/463: {characterised by displaying multiple images or images and diagnostic data on one display}
- A61B 6/487: {involving fluoroscopy}
- A61B 6/504: {for diagnosis of blood vessels, e.g. by angiography}
- A61B 6/5211: {involving processing of medical diagnostic data}
- G06T 5/50: using two or more images, e.g. averaging or subtraction
- G16H 50/20: for computer-aided diagnosis, e.g. based on medical expert systems
- A61B 6/469: {for selecting a region of interest [ROI]}
- G06T 2207/10121: Fluoroscopy
- G06T 2207/20221: Image fusion; Image merging
- G06T 2207/30041: Eye; Retina; Ophthalmic
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA

## Abstract

Methods and systems of displaying an image of an object are described. The displayed image is comprised of at least two parts that are displayed so as to present a unified image of the object. One part of the image is derived using a first temporal filter and the other part of the image is derived using a second temporal filter.

## Claims

### Claim 1

A method of displaying an image corresponding to a dynamic x-ray, comprising:
gathering a first image data set (“IDS”) that is representative of an x-ray of an object at a first time;
identifying a first portion of the first IDS and a second portion of the first IDS, wherein the first portion of the first IDS is representative of a first part of the object, and the second portion of the first IDS is representative of a second part of the object;
gathering a second IDS that is representative of an x-ray of the object at a second time;
identifying a first portion of the second IDS and a second portion of the second IDS, wherein the first portion of the second IDS is representative of the first part of the object, and the second portion of the second IDS is representative of the second part of the object;
applying a first filter using the first portion of the first IDS and the first portion of the second IDS, in order to produce a first display data set that is representative of the first part of the object;
applying a second filter using the second portion of the first IDS and the second portion of the second IDS, in order to produce a second display data set that is representative of the second part of the object;
displaying an image of the object, wherein a first part of the image depicting the first part of the object is displayed using the first display data set, and a second part of the image depicting the second part of the object is displayed using the second display data set.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first IDS includes pixel data, each pixel data representing radiation received at a specific pixel location on a receiver.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first IDS is gathered using a fluoroscopic x-ray system.

### Claim 4 (depends on 1)

The method of claim 1, wherein the second IDS is gathered using a fluoroscopic x-ray system.

### Claim 5 (depends on 1)

The method of claim 1, wherein the first portion of the first IDS and the first portion of the second IDS are selected to include a catheter tip.

### Claim 6 (depends on 1)

The method of claim 1, wherein the first portion of the first IDS and the second IDS is selected to include a treatment site.

### Claim 7 (depends on 1)

The method of claim 1, wherein the first filter is a temporal filter that:
multiplies data of the first IDS by a number α to produce a first output;
multiplies data of the second IDS by a number β to produce a second output; and
adds the first output to the second output to produce the first display data set.

### Claim 8 (depends on 7)

The method of claim 7, wherein the data of the first IDS include a plurality of pixel data, and each pixel data represents radiation received at a specific pixel location.

### Claim 9 (depends on 7)

The method of claim 7, wherein the first filter adds the first and second outputs by adding data of the first output that corresponds to data of the second output, wherein data of the first output that corresponds to data of the second output are derived from the same pixel location.

### Claim 10 (depends on 7)

The method of claim 7, wherein the second filter is a temporal filter that:
multiplies data of the first IDS by a number ψ, where ψ is different from α; to produce a third output;
multiplies data of the second IDS by a number ω to produce a fourth output; and
adds the third output to the fourth output to produce the second display data set.

### Claim 11 (depends on 1)

The method of claim 1, wherein the first filter is a recursive filter that:
derives a first output using data of the first IDS;
multiplies the first output by a number α;
multiplies data of the second IDS by a number β, where β equals 1−α, to produce a second output; and
adds the first output to the second output to produce the first display data set.

### Claim 12 (depends on 11)

The method of claim 11, wherein the data of the first IDS include a plurality of pixel data, and each pixel data represents radiation received at a specific pixel location.

### Claim 13 (depends on 11)

The method of claim 11, wherein the first filter adds the first and second outputs by adding data of the first output that corresponds to data of the second output, wherein data of the first output that corresponds to data of the second output are derived from the same pixel location.

### Claim 14 (depends on 11)

The method of claim 11, wherein the second filter is a recursive filter that:
derives a third output using data of the first IDS;
multiplies the third output by a number ψ, where ψ is different from α;
multiplies data of the second IDS by a number ω, where ω equals 1−ψ, to produce a fourth output and
adds the third output to the fourth output to produce the second display data set.

### Claim 15

A system for displaying an image corresponding to a dynamic x-ray, comprising:
a monitor; and
a microprocessor programmed to:
gather a first image data set (“IDS”) that is representative of an x-ray of an object at a first time;
identify a first portion of the first IDS and a second portion of the first IDS, wherein the first portion of the first IDS is representative of a first part of the object, and the second portion of the first IDS is representative of a second part of the object;
gather a second IDS that is representative of an x-ray of the object at a second time;
identify a first portion of the second IDS and a second portion of the second IDS, wherein the first portion of the second IDS is representative of the first part of the object, and the second portion of the second IDS is representative of the second part of the object;
apply a first filter using the first portion of the first IDS and the first portion of the second IDS, in order to produce a first display data set that is representative of the first part of the object;
apply a second filter using the second portion of the first IDS and the second portion of the second IDS, in order to produce a second display data set that is representative of the second part of the object;
display via the monitor an image of the object, wherein a first part of the image depicting the first part of the object is displayed using the first display data set, and a second part of the image depicting the second part of the object is displayed using the second display data set.

### Claim 16 (depends on 15)

The system of claim 15, wherein the first IDS includes a plurality of pixel data, and each pixel data represents radiation received at a specific pixel location on a receiver.

### Claim 17 (depends on 15)

The system of claim 15, wherein the first IDS is gathered using a fluoroscopic x-ray system.

### Claim 18 (depends on 15)

The system of claim 15, wherein the second IDS is gathered using a fluoroscopic x-ray system.

### Claim 19 (depends on 15)

The system of claim 15, wherein the first filter is a temporal filter that:
multiplies data of the first IDS by a number α, to produce a first output;
multiplies data of the second IDS by a number β, to produce a second output; and
adds the first output to the second output to produce the first display data set.

### Claim 20 (depends on 19)

The system of claim 19, wherein the data of the first IDS include a plurality of pixel data, and each pixel data represents radiation received at a specific pixel location.

### Claim 21 (depends on 19)

The system of claim 19, wherein the first filter adds the first and second outputs by adding data of the first output that corresponds to data of the second output, wherein data of the first output that corresponds to data of the second output are derived from the same pixel location.

### Claim 22 (depends on 19)

The system of claim 19, wherein the second filter is a temporal filter that:
multiplies data of the first IDS by a number ψ, where ψ is different from α, to produce a third output;
multiplies data of the second IDS by a number ω, to produce a fourth output; and
adds the third output to the fourth output to produce the second display data set.

### Claim 23 (depends on 15)

The system of claim 15, wherein the first filter is a recursive filter that:
derives a first output using data of the first IDS;
multiplies the first output by a number α;
multiplies data of the second IDS by a number β, where β equals 1−α, to produce a second output; and
adds the first output to the second output to produce the first display data set.

### Claim 24 (depends on 23)

The system of claim 23, wherein the data of the first IDS include a plurality of pixel data, each pixel data represents radiation received at a specific pixel location.

### Claim 25 (depends on 23)

The system of claim 23, wherein the data of the first IDS that corresponds to the data of the second IDS have the same pixel location.

### Claim 26 (depends on 23)

The system of claim 23, wherein the second filter is a recursive filter that:
derives a third output using data of the first IDS;
multiplies the third output by a number ψ, where ψ is different from α;
multiplies data of the second IDS by a number ω, where ω equals 1−ψ, to produce a fourth output; and
adds the third output to the fourth output to produce the second display data set.