Why is consistency an advantage of a medical expert system?

A medical expert system applies the same rules at the end of a long shift as at the start, so its advice does not vary with tiredness or workload in the way human judgement can.

State one thing a clinician can observe that a medical expert system cannot.

A medical expert system works only from the facts entered, so it misses the patient's appearance, manner and unspoken concerns that a clinician takes in directly.

Why is a medical expert system normally used to support a clinician rather than to replace one?

A medical expert system offers advice within the limits of its rules, and the clinician remains responsible for the diagnosis and for the treatment actually given.

CCEA A-Level Digital Technology 2650

Systems Analysis and Development Approaches

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Artificial Intelligence, Expert Systems and Robotics

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Artificial Intelligence, Expert Systems and Robotics

Expert systems in medicine, fault diagnosis and insurance

3 things to know
A2 Unit 1

Overview

How an expert system is used in medical diagnosis, why a medical expert system needs continual maintenance and one kind of fault a diagnostic expert system handles badly.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Key term

Describe how an expert system is used in medical diagnosis.

Key term

Explain one benefit of a medical expert system to a clinic with no specialist on site.

Key term

How does a medical expert system help with rare conditions?

Questions from this subtopic

Each one with the model answer underneath.

1
Describe how an expert system is used in medical diagnosis.
Model answer
A medical expert system asks about symptoms, patient history and test results, matches the answers against rules gathered from clinicians and returns a ranked list of possible conditions with the further tests that would separate them.
2
Explain one benefit of a medical expert system to a clinic with no specialist on site.
Model answer
A medical expert system puts specialist knowledge where no specialist is available, so a rural clinic can assess a patient against a consultant's rules before deciding whether a referral is needed.
3
Why is consistency an advantage of a medical expert system?
Model answer
A medical expert system applies the same rules at the end of a long shift as at the start, so its advice does not vary with tiredness or workload in the way human judgement can.
4
How does a medical expert system help with rare conditions?
Model answer
A medical expert system considers every condition in its knowledge base that fits the symptoms, including a rare one that a clinician might not have seen for years and would not think of.
5
State one thing a clinician can observe that a medical expert system cannot.
Model answer
A medical expert system works only from the facts entered, so it misses the patient's appearance, manner and unspoken concerns that a clinician takes in directly.
6
Why is a medical expert system normally used to support a clinician rather than to replace one?
Model answer
A medical expert system offers advice within the limits of its rules, and the clinician remains responsible for the diagnosis and for the treatment actually given.

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