JP4693234B2 - Method and apparatus for acquiring and analyzing non-imaging data collected during ultrasonography - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention generally relates to the operation of ultrasound imaging systems. In particular, the present invention relates to a method for measuring productivity within a department performing ultrasonic inspection.
[0002]
[Prior art]
Ultrasound imaging systems are often required to produce images that are reliable and understandable on a required schedule and over a significant useful life. In order to operate properly, the system is regularly serviced by well-trained personnel who handle imaging problems, configure and calibrate the system, and regularly check the system and update the software. More recently, service delivery has been supplemented by service centers that can contact scanners at participating institutions without the need for intervention from agency personnel. Such centralized service provision aims to keep the ultrasound imaging system in proper operating condition without requiring the attention of a physician or radiologist, and may be totally transparent to the institution. Many.
[0003]
In some centralized service delivery systems, a computerized service center contacts the scanner over the network, checks the system configuration and operational status, collects data and generates reports, and others It is possible to perform useful service functions. Such contacts can be made periodically, such as during a “cleaning” of the system, during which various system performance data for a particular scanner is collected and stored along with historical data. The data can then be used to evaluate system performance, suggest or schedule visits by service personnel, and the like.
[0004]
In addition, currently available service systems are also capable of a certain degree of interaction between service centers and institutions. For example, interactive service systems are known that facilitate the exchange of critical information including system performance reporting, feedback on specific incidents requiring attention, system licenses, software, imaging protocol updates, and the like. In particular, a central service facility can exchange information about possible service problems with remotely located scanners and retrieve information or data log files from the scanners to service these scanners A platform has been developed.
[0005]
Within a department that has one or more ultrasound imaging systems operated by one or more system operators, it is important to use the available equipment effectively. If multiple technicians with different skill levels operate the same equipment, it may be desirable to monitor the operator's work during the ultrasound examination. Preferably, the central service facility can extract data from a remote ultrasound imaging system within the department, perform an analysis of the work characteristics of the ultrasound department, and then download the work report to the department manager at the remote equipment. I will. Alternatively, a field service technician visiting a remote site could extract the same data and generate the same report.
[0006]
[Problems to be solved by the invention]
It is an object of the present invention to provide a method and system for acquiring and analyzing data other than imaging collected during an ultrasound examination for the purpose of reporting work characteristics of the ultrasound department.
[0007]
[Means for solving the problems]
The present invention is directed to a method and system for acquiring and analyzing data other than images collected during an ultrasound examination for the purpose of reporting work characteristics of the ultrasound department. According to a preferred embodiment of the present invention, this tracks the user's keystrokes whenever the ultrasound imaging system is turned on, obtains keystroke data from the ultrasound system, and then uses this data for departmental Achieved by using for work analysis. As used herein, the term “keystroke” refers to the operation of the input device on the operator interface or on the ultrasound probe, the selection of menu items on the graphical user interface, and the action or probe to insert the probe. Includes lifting from the yoke.
[0008]
During the examination, the user of the ultrasound system presses a button and selects an item from a menu on the operator interface. These keystrokes activate functions on the ultrasound imaging system or change operating parameters. At the same time, codes representing keystrokes are stored in electronic storage. Along with this code, the date, time and value to be set or adjusted are also stored. This information is preferably stored in long-term storage so that many days worthy “keystroke logs” can be analyzed.
[0009]
As a result, data in electronic storage can be extracted for use in analyzing the use of an ultrasound imaging system. The analysis is done offline in a central service facility or other computing device at a remote location. Alternatively, the analysis may be performed on the ultrasound imaging system itself. In the latter case, the system controller may be programmed with keystroke analysis software.
[0010]
In accordance with the preferred embodiment of the present invention, keystroke data is classified, filtered, and then reported in a spreadsheet, diagram, or other format. In particular, the data is classified as extracted and (1) the number of tests performed by type, day, operator, associated physician, etc., (2) the test time by individual, collective or specific type Length, (3) comparison of individual operator productivity, (4) compatibility with departmental processes and procedures (helps to verify quality systems), and (5) main influences on departmental productivity. Productivity measurements, such as the determination of various factors. The present invention is not limited to these examples of productivity measurements that can be made.
[0011]
According to a preferred embodiment of the present invention, the central service facility obtains keystroke data from one or more remotely located ultrasound imaging systems over a network. The system controller of the ultrasound imaging system is programmed to store encoded keystroke data whenever the system is turned on. The keystroke analysis server at the central service facility is programmed to retrieve stored keystroke data from one or more selected ultrasound imaging systems. The acquired keystroke data is then classified and filtered according to a keystroke analysis routine. If the contract or subscription terms with the remote equipment then require a report, a report appropriate for use by the service equipment or remote equipment can be generated.
[0012]
According to a preferred embodiment, the system comprises a central service facility connected to a number of remotely located ultrasound imaging systems via a network. Each imaging system comprises means for storing keystroke data, means for transmitting the keystroke data to the network towards the service facility, and means for receiving work analysis from the network. The service facility receives means for receiving keystroke data over the network, means for analyzing the keystroke data, means for generating a report of work analysis results, and sends the report to the network for the ultrasound imaging system. Means. Alternatively, the report can be sent to a management workstation at the remote facility instead of being sent to the ultrasound imaging system itself.
[0013]
According to another preferred embodiment of the present invention, keystroke analysis may be performed at a remote site and at a workstation that communicates with one or more ultrasound imaging systems via a local area network. . Alternatively, the workstation that performs the keystroke analysis may be a stand-alone workstation, where the keystroke data is stored on the disk in an ultrasound imaging system, and then the disk is Transported by physically transporting to a workstation.
[0014]
According to a preferred alternative embodiment, the system controller of the remote ultrasound imaging system can be programmed to analyze its own keystroke data. However, there is a limit to the available processing power and the ability to compare the results with those of other similarly placed systems.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
According to a preferred embodiment of the present invention, keystroke data is stored in electronic memory during operation of the ultrasound imaging system. Examples of “keystrokes” that are input to an ultrasound imaging system in accordance with a preferred embodiment are described with reference to FIGS.
[0016]
FIG. 1 shows an ultrasound imaging system having a plurality of interchangeable transducer probes. The system comprises a mobile main unit 10 that is transportable on a plurality of wheels 12. The main unit includes a housing 14, an operator panel 16 and a display monitor 18. The housing 14 has a plurality of ports (not shown) that can be used to couple a plurality of transducer probes 20 to a signal processing subsystem within the housing 14. Typically, each probe is designed to meet the requirements of a particular application. Transducers belong to four general categories: phased array, linear, convex, and specialized (ie, transducers designed for imaging-specific body parts).
[0017]
Each transducer probe is coupled to each port of the ultrasound imaging system via a coaxial cable 22 and a transducer connector 24. Transducer connectors are interchangeable in the sense that each connector can be plugged into any port. As shown in FIG. 1, a set of yokes 26 is provided to support each transducer when it is not in use. Each yoke is connected to a corresponding transducer connector. The transducer probe, coaxial cable, connector, and yoke form a transducer probe assembly. If the operator wishes to connect a different probe to the system, the entire probe assembly is removed and replaced with a new probe assembly.
[0018]
The structure of the integral yoke / transducer connector is shown in detail in FIG. Transducer probe 20 has an array (not shown) of transducer elements that transmit ultrasound in transmit mode and receive ultrasound echoes in receive mode from the anatomy being examined. The signal electrode of the transducer element is electrically connected to one end of each conductive wire (not shown) of the coaxial cable 22. The other end of the conductive wire of the coaxial cable 22 is electrically connected to a circuit in the connector box 30. The connector circuit is electrically connected to the port (not shown) into which it is plugged. The port is electrically connected to the transducer interface board (details are described below with reference to FIG. 3).
[0019]
The probe switch 32 is incorporated in an integral yoke / transducer connector. This probe switch serves as a means to tell the system when the probe 20 is lifted from the probe holder or yoke 26. The probe switch 32 provides a simple “on” and “off” passive response (single pole, single throw). The switch is closed when the probe is away from the yoke, and the switch is open when the probe is attached to the yoke. Each transition from an “on” state to an “off” state and each transition from an “off” state to an “on” state is referred to as a “keystroke” for purposes of the present invention. Each such transition is encoded and stored in electronic memory.
[0020]
The ultrasound imaging system uses the signal generated by the probe switch when determining the next transducer probe to be activated. In particular, a stack of probe identifiers having an order determined by the order in which normal transducers that have not been activated are connected to their respective holders and deviate from both states is maintained by the system controller, The controller cooperates with the transducer interface 34 shown in FIG. Up to four transducer probes can be connected to the imaging system via transducer connectors 24a-24d. When any one of the transducer connectors is plugged into a corresponding port in the imaging system, a probe presence signal is generated and stored in the probe presence register 36.
[0021]
As described above, each connector 24a-24 has a probe switch 32 (as shown in FIG. 2) to indicate whether the corresponding probe is coupled to the corresponding yoke. The resulting probe switch hook status signal is input to the system via the transducer connector pins. This pin is pulled high by a resistor on the transducer interface board 34. The transducer probe either keeps the pin floating or stops the pin to generate a signal indicating that the probe has been removed from its yoke. The resulting probe switch hook status signal is stored in the probe switch hook status register 38. In addition, each transducer type has a unique 8-bit probe ID code. The transducer connector has a respective pin for each bit of the probe ID code. These pins are pulled high by resistors on the transducer interface board 34. The transducer either keeps these pins floating or stops the pins to form a unique probe ID. The probe ID signal is stored in the probe ID register 40. The system controller 48 outputs a probe selection signal to the probe activation circuit 42 on the transducer interface board 34 in accordance with the contents of the registers 36, 38 and 40. In response to the probe selection signal, the probe activation circuit 42 activates the selected transducer probe.
[0022]
The transducer selection control program is stored in the system controller 48. The system controller periodically reads the contents of registers 36, 38 and 40, processes the retrieved information according to the stored algorithm, and selects the transducer to be activated. The probe selection signal transmitted to the probe activation circuit 42 indicates the selected transducer. The selected transducer is activated by the probe activation circuit 42 via the associated transducer connector. Radio frequency data from the transducer element array is then multiplexed from the transducer connector to a beaming circuit (not shown) via an RF data line 44 on the transducer interface board 34 under the control of the system controller. Is done.
[0023]
As is apparent from the above description, the system controller can detect which probe is activated at each moment during system operation. According to a preferred embodiment of the present invention, when the probe is activated (ie, when its probe switch transitions from an “on” state to an “off” state), and the ID code of the activated probe is electronically To be recorded. Thus, the system maintains an electronic history that proves which probes have been used by the system operator during the examination. Subsequent analysis of this electronic data can reveal whether the system operator used the appropriate probe for a particular test and the length of time each probe was activated.
[0024]
According to a preferred embodiment of the present invention, the system controller begins recording keystroke data as soon as the system is powered on. Power is turned on by raising switch 8 on the system console. While powered on, the system controller records each probe activation (as previously described) and any other operator-controlled actions during the test. Another operator control is on the control panel 16, which is shown in detail in FIG.
[0025]
To begin a new patient exam, the system operator presses the new patient (NP) button 114 on the control panel. A new patient menu is displayed on the monitor 18. Type the letter Y to confirm that the patient is new. Next, the operator presses the return button 116. The trackball 118 is then used to select the appropriate examination category from the list of examination categories displayed on the new patient menu. Selection is made by pressing Set (either by pressing button 120 on the control panel or clicking on the virtual Set button displayed on the new patient menu). The selected inspection category determines presets, available applications, and worksheets. The system operator then fills in the appropriate patient data. Alternatively, for a DICOM user, the worklist schedule can be displayed by pressing the ROI Size (ROI size) input device 122. Using the trackball 118, a patient is selected and then the user presses Set. A new patient menu with data is displayed. The user exits by pressing Exit (either by pressing button 124 on the control panel or clicking on the virtual Exit button displayed on the new patient menu). The user then selects the desired application. Manipulating the image preset softkey 126 on the control panel selects, modifies, creates, archives, or displays system or user presets. The user then selects the desired probe and begins scanning.
[0026]
All of the above keystrokes are time stamped and encoded by the system controller, and the encoded keystroke data is stored in electronic memory. As shown in FIG. 4, the control panel has a softkey display 128 and associated controls and displays different menus as functions of the application being used. Pressing the code key 130 plus a letter activates the system function. When the DICOM End Exam button 132 is pressed, a DICOM job is transmitted to a remotely located device when the inspection is completed. The Auto Optimize button 134 optimizes the image in B mode, color flow mode and Doppler mode. When the Zoom button 136 is pressed, the image is enlarged. When the Freez button 138 is activated, the image is frozen / released.
[0027]
Although the function of each and every key on the control panel is not described herein for the sake of saving, it should be understood that each keystroke is recorded according to the method of the preferred embodiment. These keystrokes activate functions on the ultrasound imaging system and change operating parameters. At the same time, codes representing keystrokes are stored in electronic storage. Along with this code, the date, time and value to be set or adjusted are also stored. This information may or may not be stored throughout the system power cycle, but long-term storage is preferred.
[0028]
Referring to FIG. 5, each ultrasound imaging system 2 includes a data acquisition and signal processing unit 46 that transmits an ultrasound signal to a target object, acquires the resulting signal, and regenerates a useful image. Process the signal for composition. The system includes a system controller 48 that regulates the operation of the unit 46, processes the acquired signals, reconstructs images, and displays them on the display monitor 18. The system controller preferably comprises a central processing unit 47 and an associated system memory (electronic storage) 49. The system controller 48 controls the unit 46 to acquire data and processes the received signals according to software stored in the system memory and according to various command inputs by the system operator via the control panel 16. However, it may include a keyboard, mouse, trackball and various other input devices as previously described with reference to FIG. The system controller is programmed to encode each keystroke and store the encoded keystroke data in electronic storage 49. The ultrasound imaging system 2 also includes an output interface 51 to output keystroke data to a disk or serial communication line. This extracts keystroke data in the electronic storage 49 and can be used to analyze the usage of the ultrasound imaging system. This analysis can occur offline in a central service facility or another computing device at a remote location. Alternatively, the analysis is performed on the ultrasound imaging system itself. In the latter case, the system controller 48 must be programmed with keystroke analysis software.
[0029]
In accordance with a preferred embodiment of the present invention, keystroke data is classified, filtered, and then reported in a spreadsheet, diagram, or other format. Specifically, when data is extracted, (1) the number of tests performed per type, day, operator, associated physician, etc., (2) the test time for individual, collective, or specific types Length, (3) comparison of individual operator productivity, (3) compatibility with departmental processes and procedures (helps to verify quality systems), and (5) main influences on departmental productivity. Productivity measurements, such as the determination of various factors. The ability to determine the number of examinations and / or calculate the length of the examination time allows an ultrasound imaging service to be provided to the user on a cost per examination or cost basis per minute basis.
[0030]
In order to achieve the above, processing / analysis tools are required. According to a preferred embodiment of the present invention, the keystroke time stamp log generated by the ultrasound imaging system is stored in machine readable binary form. In order to make data available to human decision makers, processing / analysis tools preferably provide four types of functions: data acquisition, data transformation, data aggregation and data mining. Optionally, data acquisition and data aggregation can be eliminated if the system controller of the ultrasound imaging system itself can perform keystroke analysis on its own keystroke data.
[0031]
According to a preferred embodiment, keystroke data is recorded and stored on the hard disk of the ultrasound imaging system as a normal part of the system operating software. The data acquisition step includes transferring and processing the data from the ultrasound imaging system to another computing platform (eg, a remote personal computer or a keystroke analysis server at a central service facility). This step can be performed using a network (eg, Internet, intranet, and private network) or using a sneaker net diskette swap.
[0032]
Keystroke data is stored in the ultrasound imaging system in machine readable form. Each keystroke has its physical characteristics (which button was pressed, when it was pressed, the direction in which it was pressed (up, down, on, off, etc.), and logical characteristics (when the button was pressed) In the first step of data conversion, the physical characteristics are stripped off, leaving only the keystroke time stamp and meaning, in the second step (as far as the operator is concerned). The data is converted to a human readable form, typically in the form of an ASCII text document, each document being turned off when the ultrasound imaging system is turned on. Represents a single session of the ultrasound imaging system.
[0033]
The data aggregation step includes the step of combining all data from the respective files collected in the data acquisition process and the data conversion process. Data from multiple examinations, multiple sessions, multiple operators and multiple institutions are aggregated into a single database. From this point on, the data mining tool can be used to classify and compare the data.
[0034]
The data mining step uses statistical tools to collect data, group it, find relationships, and display the results. Grouping tools such as histograms, relational test tools such as T tests, and data characterization tools such as means, deviations and normality tests are all used. Tool usage varies from project to project, depending on the mechanism being tested for any particular situation.
[0035]
In one example, a customer has a “best” technician and wants to know what makes that technician “best”. Analysis of keystroke data from the imaging system used by the technician shows that he / she is actually the fastest and most consistent system user. Furthermore, this analysis shows that this technician has processed a large number of tests. When this data is correlated with probe usage, it is discovered that it is the “best” technician only for personnel who have used a particular probe for the type of examination being investigated. This leads the customer to change the policy so that all users use the same probe.
[0036]
According to another feature of the present invention, the examination time can be calculated based on, for example, a time stamp associated with turning the ultrasound imaging system on and off. This calculation is preferably done at a central service facility with billing capabilities. Invoices relating to the use of the system are automatically downloaded to the remote facility's accounting department after regular invoicing intervals or after each inspection.
[0037]
According to a preferred embodiment of the present invention, the central service facility obtains keystroke data from one or more remotely located ultrasound imaging systems over a network. The system controller of the ultrasound imaging system is programmed to store encoded keystroke data whenever the system is turned on. The keystroke analysis server at the central service facility is programmed to retrieve stored keystroke data at a specified time from one or more selected ultrasound imaging systems. The acquired keystroke data is then classified and filtered according to a keystroke analysis routine. If the contract or subscription terms with the remote facility then requires a report, a report suitable for use by the service facility or remote facility can be generated, for example, in the form of a spreadsheet or diagram.
[0038]
Referring to FIG. 6, a service system for providing a centralized service to a plurality of ultrasound imaging systems 2 located at different remote locations is shown. The imaging system receives service from the centralized service facility 4 via the network 52. Network 52 may be the Internet, an intranet, a local area network, or any other network. Preferably, the central service facility 4 can extract keystroke data from each ultrasound imaging system via the network 52. In addition, the service facility 4 preferably includes a processing system, which is programmed with keystroke analysis software to analyze keystroke data and automatically generate department work reports. Alternatively, the service facility has a workstation programmed with keystroke analysis software so that service personnel can analyze the keystroke data and produce appropriate reports and diagrams.
[0039]
If multiple ultrasound imaging systems are provided in a single facility or location, these may be coupled to a management station (not shown). The management station may be directly linked to a controller for various imaging systems. The management system may include a computer workstation or personal computer that is coupled to the system controller in an intranet configuration, a file sharing configuration, a client / server arrangement, or any other suitable arrangement. Such a management station will typically include a monitor for displaying system operating parameters, analyzing system usage, and exchanging service requests and data between remote and central service facilities. . Alternatively, the management station may be programmed with keystroke analysis software.
[0040]
Each communication module 50 may be linked to the service facility 4 via a remote access network 52. Any suitable network connection can be utilized for this purpose. Preferred network configurations include both proprietary or dedicated networks and open networks such as the Internet. Data is exchanged between the ultrasound imaging system 2 and the central service facility 4 in any suitable format, such as according to the Internet Protocol (IP), Transmission Control Protocol (TCP), or other known protocols. In addition, some of the data may be transmitted or formatted via a markup language such as Hypertext Markup Language (HTML) or other standard language. Preferred interface and communication components are described in more detail below.
[0041]
Within service facility 4, messages, service requests and data are received by communication components as generally indicated by reference numeral 54. Component 54 transmits service data (eg, keystroke data) to a service center processing system, generally designated by reference numeral 56 in FIG. The processing system 56 manages the reception, processing and transmission of service data directed to and received from the service facility. In general, the processing system 56 includes one or more computers and dedicated hardware or software servers for processing various service requests and receiving and transmitting service data, as described in further detail below. There is a case. The service facility 4 also includes a series of operator workstations 58 that are serviced by service engineers that process service requests and provide offline and online services to the diagnostic system in response to service requests. Has been. The processing system 56 may also be linked to a database system or other processing system 60 at the service facility 4 or at a location remote from the service facility 4. Such a database and processing system includes extensive database information regarding operating parameters, service history, etc., especially for both subscription scanners and an expanded population of diagnostic devices. As described below, such a database is used to service a specific diagnostic system, to track such service delivery, and to derive comparison data to a specific system or group of systems. May be used to serve or generate department work reports.
[0042]
Within each ultrasound imaging system 2, a uniform service platform 62 shown in FIG. 7 is provided. Platform 62 was adapted to configure and transmit service requests between remote systems and service equipment, transmit and receive service data, establish network connections, and manage financial or subscriber configuration. Includes hardware, firmware, and software components. Preferably, platform 62 is integrated into the system controller of the imaging system. These platforms provide a uniform graphical user interface for each imaging system. This platform allows service equipment to interface directly to individual scanner control circuits and scanner memory devices, images, logs (eg, keystroke data), and the like necessary to perform requested or subscribed services Allows access to various files. If a management station is provided, a similar uniform platform is preferably loaded on the management station to facilitate a direct interface between the management station and the service facility.
[0043]
FIG. 7 shows various functional components including a uniform service platform 62 within each remote imaging system 2. This uniform service platform is used to facilitate the transmission of keystroke data from the remote system to the central service facility over the network and the downloading of department work reports from the service facility to the remote facility. The uniform platform resides as software stored within the web server 64. Web server 64 facilitates data exchange between the imaging system and the service facility, allowing a series of web pages 68 and 70 to be displayed via web browser 66. Preferably, the server 64 and browser 66 support HTTP applications, and the browser supports Java applications. The main web page 68 is preferably a markup language page such as an HTML page displayed for the system user on the display subsystem monitor 18. The main web page 68 is preferably accessible from the normal action page, in which the user configures a test request or displays the result of the test, such as via an icon on the screen. Through the main web page 68, a series of additional web pages 70 are accessible. Such web pages allow service requests and requests for access to software applications to be configured and sent to the central service facility, facilitating the exchange of other messages, reports, software, protocols, etc. Web server 64 communicates with the network via modem 76. The connectivity service module 72 provides an interface with the web server 64. A point-to-point protocol (PPP) module 74 is also provided for transmitting Internet Protocol (IP) packets over a telecommunications connection. Those skilled in the art will appreciate that a variety of other network protocols and components can be used to facilitate data exchange over the network.
[0044]
FIG. 8 illustrates exemplary functional components for a central service facility 4 capable of analyzing keystroke data of an ultrasound imaging system in accordance with the preferred embodiment disclosed above. The service facility 4 includes a modem rack comprising a plurality of modems 98 coupled to the router 100 and coordinates data communication with the service facility. A so-called “front office” HTTP service server 80 receives and directs incoming transactions to and outgoing transactions from the facility. Server 80 is coupled to other components of the facility through firewall 82 for system security. This firewall prevents unauthorized access to the service facility in a manner commonly known in the art. In addition, operator workstation 58 is coupled to the port manager to process service requests and send messages and reports in response to such requests. An automated service unit 84 may also be included in the service facility to automatically respond to certain service requests or sweep a diagnostic system subscribed for keystroke data. The automated service unit 84 may operate independently of the interactive service component comprising the processing system 56 or may operate in concert.
[0045]
After the firewall 82, a so-called “back office” HTTP application server 86 coordinates processing such as service requests, keystroke analysis, message submission, report reporting, software forwarding, and the like. Other servers may be coupled to the HTTP application server 86, such as a service analysis server 88 configured to process specific types of service requests. In the illustrated embodiment, the processing system 56 includes a license server 90 coupled to the license database 92 to store, update, and verify the status of the ultrasound imaging system service subscription. The processing of service requests, messaging, and report reporting is coordinated by a scheduler module 94 coupled to the HTTP server 86. Scheduler module 94 coordinates the operation of other servers with processing systems, such as report server 102, keystroke analysis server 104, message server 106, and software download server 108. Those skilled in the art will see that the servers 102, 104, 106 and 108 are coupled to a memory device (not shown) to address, keystroke data log file, billing file, message and report file, application. It will be understood that data such as software is stored. The software server 108 is coupled to the storage device 110 via one or more data channels, the storage device 110 includes a software package that can be transmitted, and the software package can be transmitted directly to the diagnostic system or diagnostics. It can be accessed by the system or supplied on a pay or purchase basis per use. Report server 102 and message server 106 are further coupled to delivery processing module 112, which receives the outgoing message, confirms correct connectivity with the remote system, and messages to the remote facility over the network. And is configured to coordinate the sending of reports.
[0046]
In accordance with a preferred embodiment of the present invention, keystroke analysis server 104 receives keystroke data from a remote imaging system via scheduler module 94. The keystroke analysis server then performs the data acquisition, data conversion, data aggregation, and data mining steps described above. Based on the results of the keystroke analysis, an appropriate department work report is generated by the report server 102 and downloaded via the delivery processing module 112 to a remote ultrasound imaging system or remote facility management office. Further, the report server may be programmed with a billing function to generate a bill based on the use of the ultrasound imaging system as determined by the keystroke analysis server. Alternatively, keystroke analysis and departmental work reports or bill generation can be controlled by service personnel interacting with workstations at the service facility.
[0047]
Such functional circuitry can be configured as hardware, firmware, or software on any suitable computer platform. For example, the functional circuitry of the imaging system can be programmed as appropriate code in a personal computer or workstation, or can be fully integrated or added to the system scanner. The functional circuit of the service facility includes an additional personal computer or workstation in addition to the main frame computer, in which one or more servers, schedulers, etc. may be configured. Note that the web server 64 included in the uniform platform shown in FIG. 7 includes unique system identification data to supplement information input by the user. The unique system identification data is automatically sent to the service center along with the keystroke data log file so that if there is a type of report that the remote facility is authorized to receive, that type is serviced. Allows equipment to determine.
[0048]
In accordance with a further aspect of the present invention, the service facility can sweep a selected set of ultrasound imaging systems with respect to keystroke data stored in an electronic memory within the system controller. As used herein, the term “sweep” generally refers to an “upload” scenario or a “download” scenario, such as through a network connection, depending on the data used to service the system and the nature of its usage. Refers to the process of the connected system component that identifies the desired data and transmits the data. Such sweeps either occur on a regularly scheduled basis, occur at a desired time (eg, off-peak usage time), or occur on demand by a system user or system application There is a possibility.
[0049]
According to an alternative preferred embodiment, the keystroke analysis algorithm disclosed herein can be embedded in the system controller of a remote ultrasound imaging system. However, the available processing power and the ability to compare keystroke analysis results with those of other systems are limited.
[0050]
Although the present invention has been described herein with reference to preferred embodiments, various modifications can be made by those skilled in the art without departing from the scope of the invention, and elements of the invention can be replaced by equivalents. Will be understood. In addition, many modifications may be made to adapt a particular situation to the teachings of the invention without departing from the essential scope thereof. Accordingly, the invention is not limited to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention encompasses all embodiments falling within the scope of the appended claims. It is intended to include.
[0051]
As used in the claims, the term "keystroke" refers to the operation of the input device on the operator interface or on the ultrasound probe, the selection of menu items on the graphical user interface, the act of plugging into the probe or the probe This includes the act of pulling out the yoke from the yoke.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating a front view of an ultrasound imaging system having a plurality of interchangeable probe assemblies.
FIG. 2 is a block diagram of a transducer interface that allows the transducer probe to interface to an ultrasound imaging system.
FIG. 3 is a conceptual diagram of a known integral yoke / transducer connector used in the system shown in FIG.
FIG. 4 is a schematic diagram showing a typical control panel of a conventional ultrasonic imaging system.
FIG. 5 is a configuration diagram showing an ultrasonic imaging system in which keystroke data is stored in an electronic memory.
FIG. 6 is a schematic representation of a plurality of remotely located ultrasound imaging systems coupled to a central service facility via a network connection to provide centralized analysis of keystroke data.
7 is a block diagram of certain functional components within an ultrasound imaging system of the type shown in FIG. 1 to facilitate interactive, centralized service provisioning of the ultrasound imaging system.
FIG. 8 is a block diagram of certain functional components of an example central service facility for providing interactive, centralized services to a plurality of remotely located medical diagnostic systems.
[Explanation of symbols]
2 Ultrasonic imaging system
4 service facilities
8 switches
10 Mobile main unit
12 wheels
14 Housing
16 Control panel
18 Display monitor
20 Transducer probe
22 Coaxial cable
24a Transducer connector
24b Transducer connector
24c transducer connector
24d transducer connector
26 York

Claims (41)

Keystroke data including the encoded physical characteristics, encoded logical characteristics and encoded time stamp for each different keystroke input by the system operator when powered on Storing electronically in machine-readable form;
Stripping the encoded physical property from the keystroke data;
Method for analyzing use of an ultrasound imaging system including the steps of obtaining information about the work mines the keystroke data after said stripping step.  The method of claim 1, further comprising converting the keystroke data to a human readable form.  The method of claim 1, wherein the mining step includes grouping the keystroke data.  The method of claim 1, wherein the mining step includes testing a relationship in the keystroke data.  The method of claim 1, wherein the mining step includes characterizing the keystroke data.  The method of claim 1, wherein the electronic storage step is performed in an ultrasound imaging system and further comprising the step of transferring the keystroke data from the ultrasound imaging system to an external computing platform.  The method of claim 6, wherein the transferring step is performed via a network.  The method of claim 7, wherein the stripping and mining steps are performed at a central service facility.  7. The method of claim 6, wherein the transferring step includes transferring the keystroke data from the hard disk to a movable disk.  The method of claim 1, further comprising collecting keystroke data from a number of log files. A system comprising a central service facility connected to a number of remotely located ultrasound imaging systems via a network, each of said ultrasound imaging systems comprising:
Means for entering keystrokes;
Keystroke data including the encoded physical characteristics, encoded logical characteristics and encoded time stamp for each different keystroke input by the system operator when powered on Means for electronic storage in machine-readable form;
Means for transmitting the keystroke data to the network towards the service facility,
The service facilities are:
Means for receiving the keystroke data via the network;
Means for stripping the encoded physical property from the keystroke data;
System comprising means for obtaining information about the work mines the keystroke data after the peeling.  The system of claim 11, wherein the mining means includes a software tool for classifying the keystroke data.  The system of claim 11, wherein the mining means includes a software tool for filtering the keystroke data.  The system of claim 11, wherein the mining means includes a software tool for characterizing the keystroke data.  The system of claim 11, wherein the mining means includes a software tool for determining an examination length based on the keystroke data.  The system of claim 11 further comprising means for collecting keystroke data from a number of log files. A system comprising a data processor connected to an ultrasound imaging system via a network, the ultrasound imaging system comprising:
Means for entering keystrokes;
Keystroke data including the encoded physical characteristics, encoded logical characteristics and encoded time stamp for each different keystroke input by the system operator when powered on Means for electronic storage in machine-readable form;
Means for transmitting the keystroke data to the data processor towards the data processor,
The data processor is
Receiving the keystroke data via the network;
Stripping the encoded physical property from the keystroke data;
Programming systems appear to perform the steps of obtaining information about the work mines the keystroke data after the peeling.  The system of claim 17, wherein the mining step includes grouping the keystroke data.  The system of claim 17, wherein the mining step includes a step for testing a relationship in the keystroke data.  The system of claim 17, wherein the mining step includes characterizing the keystroke data.  The system of claim 17, wherein the mining step includes determining an examination length based on the keystroke data.  18. The system of claim 17, further comprising a probe and a yoke over which the probe can hook, and wherein the means for inputting the keystroke includes a switch that is activated when the probe is removed from the yoke.  The system of claim 17, wherein the means for inputting the keystroke includes a power on switch.  The system of claim 17, wherein the means for inputting keystrokes includes an input button on a control panel.  The system of claim 17, wherein the means for inputting keystrokes includes virtual buttons on a graphical interface.  18. The system of claim 17, further comprising a probe, and the means for inputting the keystroke includes a switch on the probe. A system comprising a data processor connected to an ultrasound imaging system via a network, the ultrasound imaging system comprising:
An operator interface for entering keystrokes;
Means for encoding the keystrokes to form encoded keystroke data;
An electronic memory for storing the encoded keystroke data;
Means for transmitting the keystroke data to the data processor towards the data processor,
The data processor is
Receiving the keystroke data via the network;
Analyzing the keystroke data to obtain information about the operation , and
The encoded keystroke data includes a time stamp and an identifier for each keystroke .  28. The system of claim 27, further comprising means for generating a departmental work analysis report based on the results of the analysis step.  28. The system of claim 27, further comprising means for generating a bill for use of an ultrasound imaging system based on the results of the analyzing step.  28. The system of claim 27, wherein the analyzing step includes grouping the keystroke data.  28. The system of claim 27, wherein the analyzing step includes testing a relationship in the keystroke data.  28. The system of claim 27, wherein the analyzing step includes the step of characterizing the keystroke data.  28. The system of claim 27, wherein the analyzing step includes determining an examination length based on the keystroke data. Encoding keystrokes and forming encoded keystroke data;
Look including the step of analyzing the keystroke data in order to obtain information about the work,
The method of analyzing use of an ultrasound imaging system, wherein the keystroke data includes a time stamp and an identifier for each keystroke . 35. The method of claim 34 , further comprising generating a departmental work analysis report based on a result of the analyzing step. 35. The method of claim 34 , wherein the analyzing step includes grouping the keystroke data. 35. The method of claim 34 , wherein the analyzing step includes testing a relationship in the keystroke data. 35. The method of claim 34 , wherein the analyzing step includes the step of characterizing the keystroke data. 35. The method of claim 34 , wherein the analyzing step includes determining an examination length based on the keystroke data. An operator interface for entering keystrokes;
Means for encoding the keystroke and forming encoded keystroke data;
An electronic memory for storing the encoded keystroke data;
A data processor programmed to analyze the keystroke data to obtain information about work ;
Ultrasound imaging system that includes the key stroke data, a time stamp and an identifier for each keystroke. 41. The system of claim 40 , further comprising means for generating a departmental work analysis report based on the results of the analysis of the keystroke data.

Images