MEDICAL IMAGING VIEWER CACHING TECHNIQUES

• US 20160092446A1
• Filed: 09/29/2014
• Published: 03/31/2016
• Est. Priority Date: 09/29/2014
• Status: Abandoned Application

• Current Assignee: Vital Images Incorporated (Canon Inc.)
• Original Assignee: Vital Images Incorporated (Canon Inc.)
• Inventors: Nye, Jason
• Application Number:
  US14/500,027
• Publication Number:
  US 20160092446A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/51 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: G06T 3/00 Geometric image transformations in the plane of the image
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS
• CPC Class Codes: G16H 30/40 for processing medical images, e.g. editing

Abstract

Techniques for client-side caching of a medical image and server-side coordination of the client-side caching techniques are disclosed herein. User interaction in a client medical image display interface is coordinated with server conversion and processing operations. In one example, a server provides a unique key and display parameters to coordinate and specify client display operations. The unique key can be used to obtain a copy of the image from a local client-side cache, and the display parameters can be used to specify client-side transformation and rendering techniques to implement a requested image view. As a result of the client-side caching operations, resource utilization (including computational processing and network bandwidth) can be minimized, while user interactivity can be maximized.

Claims

1. A method for client-side caching of a medical image, performed by a client computing device having at least one processor and at least one memory, the method implemented by operations performed using the at least one processor and the at least one memory, with the operations comprising:

processing user interaction received in a medical image display interface on the client computing device, the user interaction selecting a display of a medical image within the medical image display interface;

receiving, from a server in response to selecting the display of the medical image, a unique identifier correlated to image data of the medical image; and

performing a lookup of image data for the medical image in a cache accessible to the client computing device, the lookup of the image data for the medical image being performed using the unique identifier of the medical image.

2. The method of claim 1, the operations comprising:

receiving, from the server in response to selecting the display of the medical image, a plurality of display parameters of the medical image for the display; and

displaying the image data for the medical image in the medical image display interface, the displaying of the image data implemented using the plurality of display parameters received from the server.

3. The method of claim 2, wherein the medical image display interface is provided within a browser executing on the client computing device using the processor and the memory, the browser in operable communication with the server via a network connection with the client computing device.

4. The method of claim 2, wherein the plurality of display parameters include parameters for a specific display output of the medical image in the medical image display interface, the parameters specifying image position, image size, image orientation, and image rotation.

5. The method of claim 4, wherein the user interaction selecting the display of the medical image indicates a change to the display of at least one particular medical image in a medical image series, the change to the display incorporating a change to:

the image position, the image size, the image orientation, or the image rotation, of the at least one particular medical image.

6. The method of claim 1, the operations comprising:

processing a cache miss from the lookup of the image data in the cache;

obtaining the image data from the server using the unique identifier; and

storing the image data in the cache.

7. The method of claim 1, the operations comprising:

processing a cache hit from the lookup of the image data in the cache; and

obtaining the image data from the cache using the unique identifier.

8. The method of claim 1, the operations comprising:

receiving, from the server in response to selecting the display of the medical image, a plurality of display parameters of the medical image for the display;

receiving, from the server in response to selecting the display of the medical image, image data for an intermediate medical image, the intermediate medical image being provided inline in a server response, wherein the intermediate medical image is a representation of the medical image, and wherein the unique identifier and a plurality of display parameters accompany the intermediate medical image in the server response;

displaying image data for the intermediate medical image in the medical image display interface according to at least one of the plurality of display parameters received from the server;

obtaining the image data for the medical image, in response to the performing the lookup of the medical image in the cache; and

displaying the image data for the medical image in the medical image display interface according to the plurality of display parameters received from the server, wherein the display of the image data for medical image replaces the display of the image data for the intermediate medical image.

9. The method of claim 1, the operations comprising:

transmitting, to the server in response to selecting the display of the medical image via a user interaction, user interface interaction information, the user interaction occurring on a first medical image in the medical image display interface; and

receiving, from the server in response to the user interface interaction information, a new image event indicating selecting a display of a second medical image, wherein the image data is used to fulfill a display of the second medical image;

wherein the first medical image and the second medical image are images within a plurality of images in a medical imaging series, the medical imaging series including a plurality of images from a radiology imaging procedure.

13. The machine-readable medium of claim 9, the medium including instructions that cause the machine to perform operations that handle a cache miss from the lookup of the image data in the image data cache, by obtaining the image data from the server using the unique identifier, and storing the image data in the image data cache.

14. The machine-readable medium of claim 9, the medium including instructions that cause the machine to perform operations that handle a cache hit from the lookup of the image data in the image data cache, by obtaining the image data from the image data cache using the unique identifier.

10. At least non-transitory machine-readable medium, the machine-readable medium including instructions, which when executed by a machine having a hardware processor, causes the machine to perform operations that:

provide, to a server in communication with the machine, information for a user interaction to result in a change to a medical image display;

obtain, from a server in response to the information for the user interaction, a unique identifier correlated to image data for a medical image, wherein the image data is used to effect the change to the medical image display;

retrieve the image data for the medical image from an image data cache, wherein the retrieval of the image data is performed with use of the unique identifier; and

display at least a portion of the medical image using the image data retrieved from the image data cache.

11. The machine-readable medium of claim 10, the medium including instructions that cause the machine to perform operations that:

obtain, from the server in response to the information for the user interaction, a plurality of display characteristics of the medical image, the plurality of display characteristics designated to implement the change to the medical image display;

wherein the display of the at least a portion of the medical image is performed according to the plurality of display characteristics.

12. The machine-readable medium of claim 11, wherein the plurality of display characteristics are provided from server-specified parameters for user-visible display characteristics in a web browser display interface, the server-specified parameters including values corresponding to image position, image size, image orientation, and image rotation.

15. A medical imaging viewer system, comprising:

at least one processor and at least one memory; and

a display module implemented in connection with the processor and the memory, the display module adapted to output a medical image display interface, with the display module configured to;

receive user interaction in the medical image display interface, the user interaction specifying a change to a medical image within the medical image display interface; and

display image data for the medical image in the medical image display interface, the display of the image data occurring according to a plurality of display parameters received from a server;

a caching module implemented in connection with the processor and the memory, the caching module configured to;

perform a lookup of the image data for the medical image in a cache data store accessible to the medical imaging viewer system, the lookup of the image data for the medical image being performed based on a unique identifier of the medical image received from the server.

16. The system of claim 15, wherein the plurality of display parameters received from the server include parameters for display in the medical image display interface, the parameters including image position, image size, image orientation, and image rotation, and wherein the change to the medical image display interface includes a change of the display of a single medical image in a medical image series, the change of the display incorporating a change to:

the image position, the image size, the image orientation, or the image rotation, of the single medical image.

17. The system of claim 15, wherein the caching module is configured to process a cache hit and a cache miss for the image data, the cache miss resulting in a communication to an image processing server for retrieval of the image data, and the cache hit resulting in a retrieval of the image data from the cache data store, wherein the cache miss further results in storage of the image data in the cache data store in response to the retrieval of the image data from the image processing server.

18. The system of claim 17, wherein the caching module is configured to manage image data entries in the cache data store, and wherein the caching module is further configured to purge image data entries in the cache data store based at least in part on frequency of use.

19. The system of claim 15, the system further comprising:

a scripting module implemented in connection with the processor and the memory, the scripting module configured to perform a request to the cache data store for the image data in response to the user interaction received in the medical image display interface; and

a canvas module implemented in connection with the processor and the memory, the canvas module configured to provide a canvas for rendering output of the image data in a browser, the canvas module configured to redraw the image data based upon image rendering parameters.

20. The system of claim 15, the system further comprising an interaction module implemented in connection with the processor and the memory, the interaction module configured to detect the user interaction received in the medical image display interface, the interaction module further configured to provide information on the user interaction to the server, wherein the server provides the plurality of display parameters and the unique identifier of the medical image in response to the information on the user interaction.

21. The system of claim 15, wherein the medical imaging viewer system is further in communication with an imaging processing system, the imaging processing system comprising a conversion module and a display tracking module, the conversion module configured to convert images to a format for display in a browser at the medical imaging viewer system, the display tracking module configured to determine and track the plurality of display parameters for the image data.

22. The system of claim 21, wherein the imaging processing system is further in communication with a medical imaging system comprising a storage module and a data module, the storage module configured to store binary data for a plurality of medical images of a medical imaging series, and the data module configured to process real-time requests for medical images received from the imaging processing system, the real-time requests originating from the user interaction in the medical image display interface.