Patent Publication Number: US-2002001401-A1

Title: Medical system architecture with an apparatus for the acquisition and playback of current photographic images or image sequences

Description:
BACKGROUND OF THE INVENTION  
       [0001] 1. Field of the Invention  
       [0002] The present invention is directed to a medical system architecture of the type having a modality for the acquisition of examination images, with an apparatus allocated to the modality for processing the examination images, an apparatus for the transmission of the examination images that operates according to the DICOM method for data exchange between various applications, an apparatus for storing the examination images, and with further devices for post-processing the examination images.  
       [0003] 2. Description of the Prior Art  
       [0004] Medical system architectures are known from the book  Bildgebende Systeme für die medizinische Diagnostik , edited by H. Morneburg, 3 rd  Edition, 1995, pages 684 if, wherein image viewing locations and image processing locations, referred to as workstations, are connected to an image communication system for fetching patient data and images generated by modalities.  
       [0005] Monitoring cameras for monitoring the patient at or in a large-scale apparatus, for example an MR apparatus, are known. The image is displayed on an extra monitor.  
       [0006] German OS 198/ 02 572 discloses a medical system architecture wherein photographic images can be acquired and stored in common with the examination images. These can serve for the identification of the patient or for the documentation of medical, diagnosis-relevant documents, reports, graphics or optical images.  
       SUMMARY OF THE INVENTION  
       [0007] An object of the present invention is to provide a medical system architecture of the type initially described that enables a presentation of images that are registered with video and/or digital cameras on the console or backup console computer of a medical diagnosis or therapy apparatus. Such an apparatus can be an MR, CT, ultrasound, X-ray or angiography apparatus, nuclear camera, supervision monitor, diagnostics workstation or an irradiation device.  
       [0008] The object is inventively in a medical system architecture wherein cameras are connected to the devices for the processing and post-processing of the examination images, those devices having monitors and being fashioned such that current photographic images or image sequences (i.e., at least one still image) of the cameras can be mixed in next to the examination images in a separate window on the monitors.  
       [0009] Advantageously, the current photographic images or image sequences of the cameras can be reproduced on the monitor of a separately arranged device, so that a physician can observe an examining attendant. The camera can thereby be allocated to a first device whose images are reproduced on the monitor of a second device, so that the physician can give instructions to an MTRA (medical-Technical Radiology Assistant).  
       [0010] When the device for the transmission of the examination images is inventively fashioned such that is transmits the photographic images or image sequences of the cameras to viewing workstations connected to the device, a medical system architecture is obtained that has a device for video conference, an application for medical diagnosis and therapy devices as well as medical viewers and workstations.  
       [0011] Inventively, the cameras can be monitoring cameras that, for example, are pivotable, whereby the cameras can advantageously be digital cameras and/or video cameras.  
       [0012] The cameras of one device can be remotely controlled proceeding from a different device, so that, for example, a physician can observe an examining person in targeted fashion and give instructions for the execution of an examination. 
     
    
    
     DESCRIPTION OF THE DRAWINGS  
     [0013]FIG. 1 shows an example of a system architecture of a medical image communication network.  
     [0014]FIG. 2 is a schematic illustration of a part of the inventive system architecture. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0015] As an example, FIG. 1 shows the system architecture of a medical image communication network. The modalities  1  through  4  serve for the acquisition of medical images. As image-generating systems, these can be, for example, a CT unit  1  for computed tomography, an MR unit  2  for magnetic resonance, a DSA unit  3  for digital subtraction angiography and an X-ray unit  4  for digital radiography. Operator consoles  5  through  8  of the respective modalities or workstations are connected to these modalities  1  through  4 , allowing the acquired medical images to be processed and locally stored. Patient data belonging to the images also can be entered.  
     [0016] The operator consoles  5  through  8  are connected to an image communication network  9  in the form of a LAN/WAN backbone for the distribution of the generated images and for communication. Thus, for example, the images generated in the modalities  1  through  4  and the images further-processed in the operator consoles  5  through  8  can be stored in a central image storage and image archiving system  10 , or can be forwarded to other workstations.  
     [0017] Further viewing stations  11  in the form of diagnostics consoles that have local image memories are connected to the image communication network  9 . Such a viewing workstation  11 , for example, is a very fast mini-computer employing one or more fast processors. The images that have been acquired and deposited in the image archiving system  10  can be subsequently fetched for diagnosis at the viewing workstations  11  and deposited in its local image memory, from which the images are immediately available to the diagnostician working at the viewing workstation.  
     [0018] Servers  12 , for example, patient data servers (PDS), file servers, program servers and/or EPR (Electronic Patient Record) servers also are connected to the image communication network  9 . The image and data exchange via the image communication network  9  ensues according to the DICOM (Digital Imaging and Communications in Medicine) standard, which is an industry standard for the transmission of images and other medical information between computers, so that a digital communication between diagnosis and therapy installations of different manufacturers is possible. A network interface  13  via which the internal image communication network  9  is connected to a global data network, for example the World Wide Web, can be connected to the image communication network  9 , so that the standardized data can be exchanged with different networks worldwide.  
     [0019]FIG. 2 schematically shows a part of the inventive system architecture of the medical image communication network with the CT unit  1  for computer tomography as an exemplary modality. A pivotable camera, for example a video camera  14 , is arranged in the examination room, this camera  14  being connected to a console computer  15  of the operator console  5 . A window  18  for the playback of the photographic images or image sequences registered with the video camera  14  is provided on the picture screen  17  of a monitor  16  of the operator console  5 . The console computer  15  is connected to the image communication network  9  via LAN/WAN terminal  19 .  
     [0020] Each viewing workstation  11 , which has a computer  21  and a monitor  22 , also is connected to the image communication network  9  via a LAN/WAN terminal  20 . A window  24  for the playback of photographic images or image sequences that, for example, can likewise be registered by the video camera  14 , is provided on the picture screen  23  of the monitor  22 . A video camera  25 , for example, is also connected to the computer  21  of the viewing workstation  11 . A physician can make the findings registered therewith available for a video conference with, for example, a specialist at another viewing workstation  11 . Instead of video cameras  14  and  25 , digital still picture cameras with which photographic still pictures can be continuously made alternatively can be utilized.  
     [0021] As a result of the inventive fashioning of the system architecture with video and/or digital cameras  14  and  25 , arbitrary images or image sequences that proceed beyond the diagnostic images generated by the modalities that are currently exclusively displayed can be presented on the console or backup console computer of the medical diagnosis and/or therapy devices. Ultrasound devices, nuclear cameras, supervision monitors, irradiation devices or the like also can be provided instead of the illustrated modalities  1 - 4 .  
     [0022] As a result of the connection of cameras to the console and/or backup console computer, as well as of the installation of video conferencing software, images as still pictures or image sequence from the immediate surroundings of the device can be viewed as “digital video sequences” on the console picture screen. When the computer is networked, video images and/or sequences from everywhere else in the network also can be transmitted to the console computer and played thereat.  
     [0023] As a result of the combination of the technology of the video conference with the medical applications and display technologies on the computer consoles of medical devices, the possibility is provided of playing back images registered with video and/or digital cameras on the console or backup console computer of a medical diagnosis or therapy device. The integration of the video conferencing application simplifies and facilitates the workflow of the medical workstation realized at the device, for example in macro-functions, validation routines, monitoring functions and online consulting options.  
     [0024] Applied examples of such examinations or findings with an inventive video camera can be:  
     [0025] a) For monitoring the patient at and/or in the modality  1  through  4 , the image of the monitoring camera is not—as is currently standard—played back on an extra monitor but in the video conferencing window  18  on the console computer.  
     [0026] b) For supervising and/or assisting the medical-technical radiology assistant (MTRA), a physician who is not in the proximity of the device sees the operation of the device at his diagnosis workstation. He or she can instruct the MRTA about how the device is to be operated in order to achieve optimum results.  
     [0027] c) Given an on-call radiology from at home, the physician is on call at home, for example on the weekend or during the night. Via a remote access and without a time delay, he or she can assist the MTRA in the initial diagnosis of, for example, an emergency patient.  
     [0028] d) The inventive apparatus also can be advantageously utilized in tele-radiology, diagnosis and/or therapy in prisons or in military deployments. The physician is seated at a viewing workstation  11  connected via network while an MTRA undertakes the medical application at said places under the supervision of the physician.  
     [0029] e) In a specialist discussion or consultation, two physicians—via two respective diagnosis consoles of viewing workstations  11 —discuss a case online, whereby they can see each other in the video conferencing window as a result of the video cameras  25 . At the same time, however, the video camera  14  can also be directed onto the patient of other details of the case. Diagnostic images or the like can even be synchronously processed visible at both sides via shared applications.  
     [0030] Although modifications and changes may be suggested by those skilled in the art, it is the intention of the inventor to embody within the patent warranted hereon all changes and modifications as reasonably and properly come within the scope of his contribution to the art.