# US 9,438,869 B2 · Image projector system for a scanning room

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- Number: US 9,438,869 B2
- Document ID: US9438869B2
- Status: Granted
- Kind: B2
- Application number: 13/883,781
- Filed: 2011-10-17
- Published: 2013-09-12
- Granted: 2016-09-06
- Earliest claimed: 2010-11-17
- Assignees: Koninklijke Philips N.V.
- Applicants: Murray Fulton Gillies; Wilhelmus Daniel Hyacintus Van Groningen; Gijs Antonius Franciscus Van Elswijk; Jurgen Vogt
- Inventors: Murray Fulton Gillies; Wilhelmus Daniel Hyacintus Van Groningen; Gijs Antonius Franciscus Van Elswijk; Jurgen Vogt
- Web page: https://patentgrep.com/patent/US9438869B2

## CPC

- H04N 9/31: Projection devices for colour picture display {, e.g. using electronic spatial light modulators [ESLM]}
- A61B 5/0046: {Arrangements of imaging apparatus in a room, e.g. room provided with shielding or for improved access to apparatus}
- A61B 5/704: {Tables}
- A61B 5/742: {using visual displays (displays for heart-related electrical signals, e.g. ECG, A61B5/339)}
- G01R 33/28: Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R 33/288: {Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)

## Abstract

The invention relates to a method and a system for reducing anxiety of patients before and during e.g. MR scanning examinations. The method is based on displaying images on walls (106,107) of the scanner room (100) so that when the patient enters the scanner room, then an image is displayed on a wall visible to the patient, e.g. a wall adjacent to the entry door (103). When the patient is laying on the table (102) of the scanner (101) the projection of images is switched to another wall by reflecting the projected images using e.g. a mirror which is moved into the light rays emitted by an image projector.

## Claims

### Claim 1

An image projection system for use in a scanner room during a patient examination, comprising:
an image projector disposed in the scanner room for projecting images; a reflector disposed in the scanner room and configured to, in a first mode, project the images onto a first room surface and, in a second mode, project the images onto a second room surface, where the first and second room surfaces are non-coincident;
a controller configured to switch between the first and second modes based on patient location; and
a surveillance system including a camera and configured to detect clinical personnel in the scanner room and in response to detecting clinical personnel, at least one of:
switching on a spot light at a detected location of clinical personnel,
adjusting a sound level of music,
activating a disinfector,
lowering light level or shuttering the image projector,
muting or switching off the image projector,
blocking an area of or decreasing an intensity of the projected images at the location the clinical personnel is detected, and
creating a silhouette image of the clinical personnel in the projected images.

### Claim 2 (depends on 1)

The image projection system according to claim 1, further comprising a viewing device with one or two reflectors arranged to change the viewing path from a path between the patient and the first room surface to a path between the patient and the second room surface.

### Claim 3 (depends on 1)

The image projection system according to claim 1, where the first surface is a surface adjacent to a patient entry of the scanner room and where the second surface is a surface visible to a patient lying on a table of a scanner of the scanner room.

### Claim 4 (depends on 1)

The image projection system according to claim 1, further including;
a detector configured to detect when the patient is located in a scanning position.

### Claim 5 (depends on 1)

The image projection system according to claim 1, where the image projector is configured to generate a border around the images.

### Claim 6 (depends on 1)

The image projection system according to claim 1, where the reflector is further switchable into a third mode were the images are projected into a third surface which provides the patient entry to the scanner room.

### Claim 7 (depends on 1)

The image projection system according to claim 1, comprising a patient monitor configured to detect physiological parameters of the patient, the controller being configured to generate or modify image information supplied to the image projector.

### Claim 8

An image projection system for use in a scanner room for patient examination, where an image projector is installed in the scanner room for projecting an image onto a surface of the room, the image projection system comprising:
a reflector unit comprising a reflector, where the reflector is positioned relative to the image projector so that in a first mode of the reflector unit the miage is projected onto a first room surface, and in a second mode of the reflector unit the image is projected onto a second room surface, where the first and second room surfaces are non-coincident, and where a change from the first to the second mode is dependent on an input signal,
a signal generator for generating the input signal indicative of a location of the patient, wherein the image projector is switchable between projecting 2D images and 3D images so that 2D images are projected when the reflector unit is in the first mode and 3D images are projected when the reflector is in the second mode, where projection of 3D images comprises projection of mutually displaced first and second images which are coded so that the first and second images are viewable by the respective left and right eye of the patient.

### Claim 9

An image projection system for use in a scanner room for patient examination, where an image projector is installed in the scanner room for projecting an image onto a surface of the room, the image projection system comprising:
a reflector unit comprising a reflector, where the reflector is positioned relative, to the image projector so that in a first mode of the reflector unit the image is projected onto a first room surface, and in a second mode of the reflector unit the image is projected onto a second room surface, where the first and second room surfaces are non-coincident, and where a change from the first to the second mode is dependent on an input signal,
a signal generator for generating the input signal indicative of a location of the patient,
further comprising a viewing device with one or two reflectors arranged to change the viewing path from a path between the patient and the first room surface to a path between the patient and the second room surface, wherein the viewing devices comprises coded viewing elements for the respective left and right eye of the patient to enable viewing of the respective first and second images.

### Claim 10

An image projection system for use in a scanner room for patient examination, where an image projector is installed in the scanner room for projecting an image onto a surface of the room, the image projection system comprising:
a reflector unit comprising a reflector, where the reflector is positioned relative to the image projector so that in a first mode of the reflector unit the image is projected onto a first room surface, and in a second mode of the reflector unit the image is projected onto a second room surface, where the first and second room surfaces are non-coincident, and where a change from the first to the second mode is dependent on an input signal,
a signal generator for generating the input signal indicative of a location of the patient, further comprising a surveillance system with a camera, where the surveillance system has image processing capabilities for detecting the presence of clinical personnel, and in dependence of a detected presence of clinical personnel changing a condition of the scanner room.