4/5/2018. Current and future IT applications in the medical physics world From the start of computing to Information Technology as we know IT

Transcription

1 Objectives Current and future IT applications in the medical physics world From the start of computing to Information Technology as we know IT How did we get here? Understand the history of computers and networks Where is here? Understand network terminology Review systems in use today Understand basic network concepts that affect our day to day responsibilities Where are we going? What is the cloud, exactly? What does it mean for me? Disclosure CEO ZapIT! Medical Gottfried Wilhelm Leibniz Herman Hollerith J.V. Anastoff Blaise Pascal Charles Babbage Alan Turing David Packard Bill Hewlett 1

2 John Mauchly J Presper Eckert Grace Hopper Computer w/ Mouse Floppy Disk Blaise Pascal mechanical calculator First to be patented and sold commercially J.V. Atanasoff Clifford Berry Integrated Chip 1964 UNIX 1971 Ethernet Ada Lovelace Imagination Apple Computer VisiCalc & Apple LISA Wordstar Altair Computer TRS-80 IBM PC Windows & First Apple II dot.com HTML Mosaic Browser HPCCA Al Gore It is the Combining faculty. It brings together things, facts, ideas, conceptions in new, original, endless ever varying combinations.... It is that which penetrates into the unseen worlds around us, the worlds of Science 2

3 Ada Lovelace Analytic Engine Information Technology Storing act upon other things besides number, were objects found whose mutual fundamental relations could be expressed by those of the abstract science of operations Retrieving Transmitting Manipulating Data Through networks Networked Our World PACS High Capacity Lots of information DICOM Images Plans Treatment Records Documents Reliable Responsive Cost Effective 3

4 Our World Treatment process Open Systems Interconnection Model APPLICATION PRESENTATION SESSION TRANSPORT NETWORK DATA LINK PHYSICAL Physical Structure Transmission and reception of the raw bit stream over the physical medium Cables Hubs Application Data encoding Physical medium attachment Transmission technique (broadband, baseband) Electrical impulses 4

5 Physical Layer Risks Disruption of service Power interruption Disconnection Physical damage Outright theft Data Link Frames envelopes Error free transfer of data frames from one node to another over the physical layer NIC card Switch NIC card MAC address Logical Link Control (LLC) Data Link Layer Risks MAC address spoofing VLAN circumvention ARP cache poisoning Network Packets Letter Contains IP address Controls the operations of the subnet, deciding which physical path the data takes Routing Subnet traffic control Logical physical address mapping 5

6 Network Layer Risks IP Address Spoofing Network Routes Spoofing Transport TCP Host to host flow control Ensures that messages are delivered error free, in sequence, and with no losses or duplications Message segmentation Message acknowledgement Transport Layer Risks Network infiltration Network blocking Session Sync and send to ports Allows session establishment between processes running on different stations Maintenance and termination Session support Perform security, name recognition, logging, etc. 6

7 Session Layer Risks Password spoofing Authentication spoofing Brute force Presentation Syntax Layer (Translator of the network) Formats the data to be presented to the application layer. Character code transition Data conversion Data compression Data encryption Translation Presentation Layer Risks Unicode vulnerabilities Unexpected input Application End User Layer Program that opens what was sent or prepares what is to be sent Serves as the window for users and application processes to access the network services Resource sharing Remote file access Directory services Network management 7

8 Application Layer Risks Now and the future E mail Attachments Our World PACS Our World Treatment process 8

9 Cloud computing IT Management easier Disaster management easier Software versioning easier Storage not a problem Cost reduction Green computing Data more accessible Scalability Summary 9