Vista Imaging Vista Routing 用户手册

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Routing User Guide 
Troubleshooting Routing 
for that workstation. Images not found in local storage will be retrieved from their 
originating site. 
How the RC Column is Populated 
The RC (Remote Cache) column in VistARad's exam lists is populated with a 
destination-specific indicator when a routed exam is received by a destination. The same 
indicator is removed from the RC column when the routing software deletes the local 
copy of the exam. 
The addition or removal of the indicator is dependent on a specific "representative image" 
in the routed exam. A "representative image" is the last image processed by an Image 
Gateway for a given exam. Typically, the representative image is also the last image in an 
exam's clinical sequence. 
Image Gateways process images in the order that they are received from a modality. 
Some modalities may send images to Image Gateways in an order other than the expected 
clinical sequence. If this occurs, and if such an exam is routed, the RC column may be 
populated before transmission of all the exam's images has completed. A user opening 
such an exam may experience a delay while part of the exam is retrieved from the 
sending site. 
Preventing Transmission of Duplicate Exams 
For Imaging destinations, the transmission processor will check the destination to see if 
the image to be routed is already present. If a duplicate of the image is found, the 
transmission processor removes the redundant entry from the transmission queue, and 
moves on to the next entry in the queue. 
For DICOM destinations, image management and duplicate checking is the responsibility 
of the destination system. 
April 2006 
VistA Imaging V. 3.0, Patch 18 
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