# US 10,307,123 B2 · Tomosynthesis views from cone beam computed tomography data

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- Number: US 10,307,123 B2
- Document ID: US10307123B2
- Status: Granted
- Kind: B2
- Application number: 15/350,470
- Filed: 2016-11-14
- Published: 2017-05-25
- Granted: 2019-06-04
- Earliest claimed: 2015-11-25
- Assignees: Carestream Health, Inc.
- Applicants: Carestream Health, Inc.
- Inventors: Nathan J. Packard; John Yorkston; Richard A. Simon; Levon O. Vogelsang; Robert A. Senn
- Web page: https://patentgrep.com/patent/US10307123B2

## CPC

- A61B 6/463: {characterised by displaying multiple images or images and diagnostic data on one display}
- A61B 6/025: {Tomosynthesis}
- A61B 6/032: {Transmission computed tomography [CT]}
- A61B 6/035: {Mechanical aspects of CT}
- A61B 6/04: Positioning of patients; Tiltable beds or the like
- A61B 6/4085: {Cone-beams}
- A61B 6/4441: {the rigid structure being a C-arm or U-arm}
- A61B 6/465: {adapted to display user selection data, e.g. graphical user interface, icons or menus}
- A61B 6/466: {adapted to display 3D data}
- A61B 6/467: {characterised by special input means}
- A61B 6/505: {for diagnosis of bone}
- A61B 6/5205: {involving processing of raw data to produce diagnostic data}
- A61B 6/5223: {generating planar views from image data, e.g. extracting a coronal view from a 3D image}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An imaging method, accesses cone beam computed tomography (CBCT) data and displays, on a display monitor, at least one view of the CBCT data. The method provides an interface for a user to indicate a tomosynthesis reconstruction plane on the displayed view of the CBCT data; and displays a tomosynthesis image on the display monitor according to the indicated tomosynthesis reconstruction plane.

## Claims

### Claim 1

An imaging method, comprising:
accessing cone beam computed tomography (CBCT) data;
displaying, on a display monitor, at least one view of the CBCT data;
providing an interface for a user to indicate a tomosynthesis reconstruction plane on the displayed at least one view of the CBCT data;
using the CBCT data, generating a tomosynthesis image according to the tomosynthesis reconstruction plane indicated using the interface; and
displaying the generated tomosynthesis image on the display monitor.

### Claim 2 (depends on 1)

The imaging method of claim 1, further comprising simultaneously displaying the CBCT data and the tomosynthesis image on the display monitor.

### Claim 3 (depends on 1)

The imaging method of claim 1 wherein displaying the at least one view of the CBCT data comprises displaying an axial view of the CBCT data.

### Claim 4 (depends on 3)

The imaging method of claim 3 further comprising displaying a volume view of the CBCT data.

### Claim 5 (depends on 1)

The imaging method of claim 1 further comprising an interface which allows re-positioning of a center of rotation for the tomosynthesis reconstruction plane.

### Claim 6 (depends on 1)

The imaging method of claim 1 further comprising providing an interface which allows adjusting of slice thickness for the tomosynthesis reconstruction plane.

### Claim 7 (depends on 1)

The imaging method of claim 1 further comprising providing an interface which allows adjusting of the angle of tomosynthesis display.

### Claim 8 (depends on 1)

The imaging method of claim 1 further comprising displaying a projection image corresponding to the indicated tomosynthesis reconstruction plane.

### Claim 9

A method, comprising:
using an interface displayed on a display, selecting a plane of tomosynthesis reconstruction of a subject from reconstructed cone beam computed tomography (CBCT) data;
using the CBCT data, generating a tomosynthesis image according to the selected plane of tomosynthesis reconstruction; and
displaying, storing, or transmitting the generated tomosynthesis image.

### Claim 10 (depends on 9)

The method of claim 9 wherein selecting the plane is accomplished by selecting according to a 3D surface rendering.

### Claim 11 (depends on 9)

The method of claim 9 wherein selecting the plane is accomplished by selecting from an orthogonal slice or from an oblique slice.

### Claim 12 (depends on 9)

The method of claim 9 wherein selecting the plane is accomplished by selecting from 2D projections used to generate the cone beam computed tomography data.

### Claim 13 (depends on 9)

The method of claim 9 further comprising:
using the interface, selecting a rotation axis of a tomosynthesis viewing plane.

### Claim 14 (depends on 9)

The method of claim 9 further comprising:
using the interface, selecting a slice thickness, a desired direction of a reconstruction plane, or an angular range around the selected direction.

### Claim 15 (depends on 9)

The method of claim 9 further comprising generating tomosynthesis planes at oblique angles from images acquired using a plurality of x-ray sources.

### Claim 16 (depends on 9)

The method of claim 9 further comprising providing a viewing interface for instructing the displayed projection data to select the tomosynthesis reconstruction plane.

### Claim 17 (depends on 9)

The method of claim 9 further comprising synchronizing a plurality of presentations to provide a complementary view of the same tomosynthesis reconstruction plane.

### Claim 18 (depends on 9)

The method of claim 9 further comprising providing a viewing interface for selecting metal or high contrast objects for inspection.

### Claim 19 (depends on 9)

The method of claim 9 further comprising identifying a high contrast object and configuring a viewing interface to inspect the high contrast object.

### Claim 20

An imaging method, comprising:
acquiring CBCT volume data of a subject;
displaying, on a display, a cross-sectional rendering of the CBCT volume;
in response to a viewer instruction:
(i) positioning a center of rotation for a tomosynthesis plane on the displayed image; and
(ii) specifying a rotation angle of the tomosynthesis plane relative to the displayed image;
using the CBCT volume data, generating a tomosynthesis image according to the specified tomosynthesis plane; and
displaying, transmitting, or storing the generated tomosynthesis image.