# US 8,788,292 B2 · System and method of remote reporting of radiation dose usage in image acquisition

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- Number: US 8,788,292 B2
- Document ID: US8788292B2
- Status: Granted
- Kind: B2
- Application number: 13/874,198
- Filed: 2013-04-30
- Published: 2013-09-19
- Granted: 2014-07-22
- Earliest claimed: 2009-03-20
- Assignees: General Electric Company
- Applicants: General Electric Company
- Inventors: Guillaume Bourdeaux; Jennifer Esposito; David Ysseldyke; Barry Belanger
- Web page: https://patentgrep.com/patent/US8788292B2

## CPC

- G16H 40/63: for local operation
- A61B 6/00: Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment (instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161)
- A61B 6/107: {Protection against radiation, e.g. shielding}
- A61B 6/542: {involving control of exposure}
- A61B 6/544: {dependent on patient size}
- A61B 6/56: {Details of data transmission or power supply, e.g. use of slip rings}
- A61B 6/588: {Setting distance between source unit and detector unit}
- G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A system and method to manage direction of an ionizing radiation toward an exposed subject is provided. The system can perform receiving a request from a customer to establish an internet connection to communicate between a remote office and the system directing the ionizing radiation toward the exposed subject; automatically communicating a status information and individual dose data associated with an event where direction of ionizing radiation that exceeds a threshold; automatically creating and communicating a report via the internet connection to the customer. The report can include an indication of the event where direction of ionizing radiation exceeds the threshold and a comparison of the individual radiation dose data and an individual status operation of system at time of the event relative to a benchmark defined by radiation dose data and status information acquired from a population of other systems.

## Claims

### Claim 1

A non-transitory computer readable medium including a plurality of program instructions for execution by a processor to perform the steps of:
receiving a request from a customer to establish communication between a workstation and a system directing ionizing radiation toward an exposed subject of an examination;
automatically communicating a status information and individual dose data associated with an event where direction of the ionizing radiation exceeds a total radiation dose threshold, wherein the individual dose data comprises a measure of total radiation dose; and
automatically creating and communicating a report to the customer, the report including an indication of the event where direction of the ionizing radiation exceeds the total radiation dose threshold, wherein the report also includes a graphical representation comprising:
a cumulative dose incident map depicting a measure of cumulative radiation dose directed to the exposed subject and having at least two axes that correspond to a geometry of the system directing the ionizing radiation toward the subject, wherein the at least two axes of the cumulative dose incident map comprise a graphic illustration of a horizontal axis to represent varied positions of a gantry in support of a source of the ionizing radiation with respect to a left/right anterior oblique (LAO/RAO) position of the exposed subject and a graphic illustration of a vertical axis that represents a cranial and caudal position of the gantry; and
a graphic representation of a first distribution of radiation dose to the exposed subject relative to the at least two axes, wherein the graphic representation comprises a second distribution of a number of events with the system directing the ionizing radiation where the ionizing radiation directed to the exposed subject exceeds the total radiation dose threshold, and wherein the graphic representation comprises a third distribution of radiation dose to the exposed subject relative to a variance in source to image distance (SID) of the system directing the ionizing radiation.

### Claim 2 (depends on 1)

The non-transitory computer readable medium of claim 1, wherein the report comprises a comparison of the individual radiation dose data and an individual status operation of the system directing the ionizing radiation at time of the event relative to a benchmark defined by radiation dose data and status information acquired from a population of other systems that direct ionizing radiation.

### Claim 3 (depends on 2)

The computer non-transitory readable medium of claim 2, wherein the comparison of data from the system directing the ionizing radiation-relative to data of one or more of the population of other systems that direct ionizing radiation-further is associated with each of the following: a duration of a protocol employing the direction of ionizing radiation per a distribution of types of protocols, a frequency of performance of different protocols relative to one another and an associated distribution of radiation dose directed to the exposed subject, the radiation dose, duration of exposure to the ionizing radiation, product of the radiation dose multiplied by an area of the beam of ionizing radiation directed to the exposed subject, and distribution of radiation dose relative to a type of image acquisition mode.

### Claim 4 (depends on 2)

The non-transitory computer readable medium of claim 2, wherein the comparison of data from the system directing the ionizing radiation-relative to data of one or more of the population of other systems that direct ionizing radiation further is associated each of the following: a distribution of a number of events with the system directing the ionizing radiation where the measure of total radiation dose directed to the exposed subject exceeds the total radiation dose threshold, a distribution of radiation dose directed to the exposed subject relative to a variance in the source to image distance (SID), a distribution of SID for the system directing the ionizing radiation relative to the benchmark, an auto exposure preference, a frame rate of image acquisition, a calculated value of an equivalent exposed subject thickness that produces the same average radiation attenuation, and a point in time of the examination when the radiation dose exceeded the radiation dose threshold.

### Claim 5 (depends on 2)

The non-transitory computer readable medium of claim 2, further comprising the steps of: calculating an individual trend in a history of the individual radiation dose acquired from the system directing the ionizing radiation; and comparing the individual trend relative to a population trend calculated from a history of population radiation dose data acquired from the population of other systems that direct ionizing radiation for a selected time frame as received from the user.

### Claim 6 (depends on 1)

The non-transitory computer readable medium of claim 1, wherein the cumulative dose incident map is associated with the examination of interest where the measure of total radiation dose exceeded the total radiation dose threshold, and wherein the cumulative dose incident map depicts the measure of cumulative radiation dose directed to the exposed subject during the examination relative to the tracked position or angulation of the radiation source and detector of the imaging system, wherein the tracked position or angulation of the radiation source and detector can be correlated to the tracked position or angulation of the gantry in support of the radiation source or detector.