Health informatics

Question 1

What are the themes of health informatics?

Answer 1

IT
Clinical evidence
Clinical data
Clinical systems
Research
Translational bioinformatics

Question 2

What are the three network configurations?

Answer 2

Line
Star
Tree

Question 3

What are the layers of the open systems interconnect (OSI) model?

Answer 3

Clading
Physical layer
Link layer
Network layer
Transport layer
Session layer
Presentation layer
Applications layer
Applications programs

Question 4

What layer of the OSI are DICOM and HL7 in?

Answer 4

Applications layer

Question 5

What is included in the DICOM standard?

Answer 5

20 parts and 201 supplements
Pertains to field of medical informatics
Applies to networked and offline media environment
Data transfer and semantics
Specifies level of conformance

Question 6

What are the main DICOM terms?

Answer 6

Application entity
Message
Information object
Command
Service class
Service object pair class (SOP)
Data set
Attribute
Data element

Question 7

What can be in the data element?

Answer 7

Person name
Long string
Code string
Sequence of data elements
Date
Time
UID - SOP class UID

Question 8

What are the properties of data elements?

Answer 8

Building blocks of DICOM data streams
Variable length
May be nested
Written in hex format
Group and element number defined in Data Dictionary
Private tags can be used

Question 9

What are the 5 DICOM services?

Answer 9

Store
Query/retrieve
Modality worklist
Modality performed procedure step
Print

Question 10

What is the purpose for HL7?

Answer 10

Standards for exchange, integration, sharing, and retrieval of electronic health information

Question 11

Why can HL7 issue its own standards?

Answer 11

It is an ANSI-accredited standards development organisation

Question 12

What are the family of standards?

Answer 12

Primary standards - system integration
Foundational standards
Clinical and administrative domains
Functional models and profiles

Question 13

Where is HL7 focused?

Answer 13

USA

Question 14

What are the differences between HL7 v2 and HL7 3.x

Answer 14

HL7 v2: Test based, event driven messaging, uses delimiters

HL7 3.x: XML based object orientated syntax

Question 15

What is IHE and what is its purpose?

Answer 15

Integrating the Healthcare Enterprise
Initiative to coordinate use of established standards in healthcare organisations
Covers radiology and radiation oncology

Question 16

What profiles does the Radiation oncology domain have?

Answer 16

Treatment planning
Multimodality registration
Workflow

Question 17

What are included in the hospital episode statistics?

Answer 17

NHS data warehouse containing records of admissions, outpatients, A&E attendances
125 million records added per year
Annual summaries
Patient level data

Question 18

How are the hospital episode statistics found?

Answer 18

Derived from commissioning data sets supplied by providers

Question 19

What is included in the HES in-patient information?

Answer 19

Field list: admission, clinical, discharge
Procedure codes
Diagnosis codes