I's

Question 1

interstitial pulmonary pattern

Answer 1

A radiographic appearance caused by increased amount of tissue, fluid, or cellular material in the non-air-containing lung parenchyma. Increased opacity is within the lung, but not involving vessels, bronchi, or alveoli. This is the least specific lung pattern and a frequently overused term. Rarely is a true iterstitial lung pattern visible on radiographs without some degree of alveolar filling.

Question 2

intramembranous ossification

Answer 2

Refers to (1) formation of bone in sheets of connective tissue (e.g., bones of the skull) and (2) method by which most bones heal.

Question 3

ionic iodinated contrast media

Answer 3

Positive contrast agents that are hyperosmolar (hypertonic), rapidly absorbed, quickly diluted, and can be irritating to tissues.

Question 4

ipsilateral

Answer 4

On or pertaining to the same side.

Question 5

irregular

Answer 5

A descriptive term that refers only to the shape of a structure or lesion (irregular should not be confused with ill-defined). Irregular does not define cause, activity, or aggressiveness of a lesion.