Digital Radiography And PACS

51 cards

Digital Radiography and pacs


 
  
Created Jul 16, 2012
by
coreybg

 

 
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1
earliest known calculating tool
 
abacus
2
blaise pascal
(june 1623- august 1662)
 
built a machanical calculator at the age of 16.
3
Gottfried Leibniz
 
worked on adding automatic multiplication adn division to pascals calculator.
4
charles babbage
 
concept of a programmalbe computer. "father of the computer"
5
charles babbage built
 
Difference engine
analytical engine

6
Herman Hollerith
 
machanism for machanical tabulation of punched card data.
7
Herman Hollerith
 
IBM in 1924
8
december 1943
 
Colossus. first operating computer.
9
1946
 
1st general electronic computer. university of penn.
10
ENIAC
 
electronic numerical integrator and calculator
11
1948 william shockey
 
developed Transistor
12
1951
 
UNIVAC, universal automatic computor
13
1st generation computers
 
operated by vacuum tubes
14
2nd Gen computers
 
based on individually packaged transistors
15
3rd Gen computers
 
Integrated Circuits
16
4th gen computers
 
Large scale integration
Very large-scale integration.
17
Digital Imaging
 
first used in Computed Tomography (CT)
18
Digital radiography
 
1980s, Fuji
19
Pixels
 
Each cell in the image matrix/grid
20
Image matrix
 
layout of cells in rows and colums
21
image matrix size
 
total pixles= (# of rows) ( # of columns)
22
Resolution
 
sharpness of image. more pixels=sharper image
23
Algorithms
 
mathematical formulas that tell system what image should be.
24
Digital imaging modalities
 
CT
Sonography
nuclear medicine
MRI
mammography
radiography
angiography
25
Cassettes consist of
 
2 intesifying screen speeds
Detail ("extremity") cassette: Screen speed=>100
Rare...
26
Detail intensifying screen
 
Extemities
slow speed(100)
Excellent recorded detail
Pt. receives more radiation (no)
27
What is Recorded Detail
 
ability to see sharply any small areas of the anatomy.
28
Earth intensifying screen
 
faster speed 400 or more
less patient dose
decreased recorded detail
thorax,abdomen,pelvis,skull,facial...
29
Digital Imaging: Two Methods
 
Computed Radiography (CR)
Digital radiography (DR)
30
remnant image produce Latent image
 
intracts with phosphor IP or the DR imaging plate
31
components of CR
 
imaging plates, ADC processor, Technology Worksation
32
Imaging plate layers
 
support
active layer of photostimulable phospohr
protective layer
33
PMT
photomultiplier tube
 
converts light signal to electrical signal
34
CR technologist Workstation
 
Monitor
35
CR is used where?
 
ICU ED or trauma center
OR
High volume clinic setting
portables
36
practical tips
 
Ip through erasure cycle if not used within 48 hours
to avoid latent image fading: precess...
37
DR'

direct digital radiography
 
flat panel of detectors, that are found in the imaging plate.
38
DR technologist workstation
 
x-ray tube
x-ray table
direct capture detector
39
Advantages of DR over CR
 
no cassettes
quicker processing time
dose reduction
40
Advantages of CR and DR
 
improvement of image quality
manipulation of image
less retakes
no loss of film
images...
41
what is PACS
 
Picture Archiving and Communication System

computers dedicated to storage retrieval...
42
picture
 
referring to radiographic images and radioogy reports
43
Archiving
 
refferring to film file storage
44
communications
 
referencing mutiple viewers of images and reports at virtually unlimited viewing sites called...
45
system
 
fostering the concept that a complex coordinated network makes it all possible.
46
DICOM
digital imaging communications in medicine
 
standard for handling, storing, printing, and transmitting information in medical imaging.
47
PACS data flow
 
organizations must have tight integration between their HIS/RIS, the various modalities, and...
48
HIS
hospital information system
 
used to register, admit, transfer, and discharge patients
49
RIS
radiology information system
 
schedule and track exams, view reports and images
50
comibination of PACS with CR or DR
 
Cost
less repeats due to film loss
more time efficient
51
CR and DR
 
improving patient care with PACS


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