Transcript PACS - Montgomery College

PACS
Chapter 8
Picture Archiving and
Communication System
Anatomy of PACS
Figure 8-1
Digital acquisition
Display workstations
Storage devices
Electronic version of reading room
and the file room
Digital imaging and
communication in medicine
AKA: DICOM
Each modality and PACS
communicate via DICOM
3 fundamental parts of PACS
1-Image acquisition
US, CT,MRI, Nuc Med and finally
general radiography
Increased images per patient
promoted the use of extra stations
Many work station gave way to full
PACs systems
3 fundamental parts of PACS
2 Display workstation
Receives images from archive or from
various radiology modalities
PACs application software for image
manipulation (minor to more complex
techniques)
3 fundamental parts of PACS
Archive Servers
Electronic file room
Short term or long term storage
Controls the PACs workflow
Archive receives images before they
go to radiologist
Why is this something the radiographer
should be aware of?
COMPARE THE FILM
BASED WORK FLOW TO
WHAT YOU DO NOW
PACS ARCHITECTURE
Client/serverbased system
Advantages?
Disadvantages?
All images from all
modalities go to a
central archive
server
Images are then
sent to the reading
room
PACS ARCHITECTURE
DISTRIBUTED
SYSTEMS OR
STAND ALONE
Images sent to a
designated reading
station.
MRI to one station,
CT to another
Advantages?
Disadvantages?
PACS ARCHITECTURE
Web based system
Similar to
client/serve
application except
the application
software is web
based
Advantages?
Disadvantages?
DISPLAY WORKSTATIONS
Number of monitors required by
radiologists have reduced-why?
LCD to soon replace all CRT tubeswhy?
CT viewed on a 1K
CR/DR viewed on 2K
Mammo – 5K
Let’s review resolution
Reading stations
Radiologist
Physician Review
Can read report next to images
Tech QC station
What can be done here?
What should be confirmed here?
What is RIS?
FILE ROOM/IMAGE
MANAGEMENT STATIONS
For image management purposes
Look up examinations for other
physicians
Correct demographics before sent to
archive
FUNCTIONS
Navigation functions
Hanging protocols
Study Navigation
Image manipulation and
enhancement functions
What are these?
ROI= region of interest
Patient demographics can be
modified at the QC station, the
reading station and the file room
station
Why are there so many places
that one can modify patient info?
Refer to figure 8-1
ADVANCED FUNCTIONS
Stitching
Image post processing