The Application of Use Case Modeling in Designing Medical Imaging Information Systems

Table 2

Dimensions of the model with the use case function of radiologist analysis.

Key dimensions of use case modeling	Use case function of radiologist analysis
Actor	Mammogram analyst
Preconditions	User-authentication
Nonfunctional requirements	CAD software interface requirements
Flow of events	(1) as per selection of the mammogram analyst to; (2) link to the appropriate extension point below
Extension points	(1) View mammogram and patient details; (2) Annotate mammograms and patient details; (2.1) Diagnose study; > (2.2) Diagnose series; > (2.3) Annotate image; > (2.4) Request CAD; > (2.5) Link annotations; > (2.6) Request CAD in mammogram region; (3) Execute radiological queries; > (3.1) Formulate radiological query; > (3.2) Refine radiological query
Alternative flows	(1) Unsuccessful User authentication; (2) CAD interface error; (3) Invalid query selections
Postconditions	(1) Mammogram image annotated; (2) Patient details changed; (3) Results of query execution (grid)