A Radiograph of a Parietoacanthial (Waters Method) Projection Reveals That

question 24

Multiple Choice

A radiograph of a parietoacanthial (Waters method) projection reveals that the petrous ridges are superimposed over the lower 30% of the maxillary sinuses.What specific positioning error (if any) led to this radiographic finding?

• A)Insufficient extension of skull and neck
• B)Excessive extension of skull and neck
• C)Excessive CR angulation
• D)No error exists; accept the initial radiograph.

Identify appropriate training evaluation approaches to determine program effectiveness.

Know the historical trends in the frequency of organizational evaluations.

Understand the focus of the COMA model in training evaluations.

Apply Kirkpatrick's model to calculate return on investment for training programs.

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