A contrast agent (or contrast medium) is a substance used to increase the contrast of structures or fluids within the body in medical imaging contrast agents absorb or alter external electromagnetism or ultrasound, which is different from radiopharmaceuticals, which emit radiation themselves.
Contrast occurs when two elements are different the greater the difference, the greater the contrast the key to working with contrast is to make sure the differences are obvious four common methods of creating contrast are by using differences in size, value, color, and type.
The contrast between a campaign of cromwell's and one of turenne's is far more than remarkable, and the observation of a military critic who maintains that cromwell's art of war was two centuries in advance of its time, finds universal acceptance. The word contrast conveys a stark difference in the degree to which two otherwise similar objects possess an attribute dark, depressing books and bonobos are too dissimilar to be in contrast, whereas the former do contrast with light hearted, trivial books.
Definition, usage and a list of contrast examples in literature contrast is a rhetorical device through which writers identify differences between two subjects, places, persons, things or ideas. What kinds of contrast are available there are three broad kinds of contrast available: iv, po, and pr (rectal) iv contrast is either gadolinium for mri or iodinated contrast for ct po contrast for all er and inpatient ct scans is dilute iodinated contrast (same agent used for iv contrast in ct. Consider these examples, noticing the language that is used to ask for the comparison/contrast and whether the comparison/contrast is only one part of a larger assignment: choose a particular idea or theme, such as romantic love, death, or nature, and consider how it is treated in two romantic poems.
The two poems i am comparing are two scavengers in a truck, two beautiful people in a mercedes', written by lawrence ferlinghetti, which shows the contrast between rich and poor in san francisco, and nothings changed', written by tatamkhulu afrika. : to set off in contrast: compare or appraise in respect to differences contrast european and american manners contrast the two major characters of the novel — often used with to or with contrasting the painter with her contemporaries.
In, two ways of seeing a river, the author, mark twain, described his idea of the mississippi river from two angles or two perspectives and used comparison and contrast to illustrate his pointshe first began by using a metaphor in his opening words he compared to mississippi river to a language which he had already mastered however, he said that upon his mastery of the river, he lost. Point-by-point contrast – in this type of contrast, writers deal with a series of features of two subjects, and then present their contrast, discussing all points successively subject-by-subject contrast – in this type of contrast, a writer first discusses one subject thoroughly, and then moves on to another.
In composition, contrast is a rhetorical strategy and method of organization in which a writer identifies the differences between two people, places, ideas, or things on the sentence level, one type of contrast is antithesisin paragraphs and essays, contrast is generally considered an aspect of comparison words and phrases that often signal a contrast include but, however, yet, in contrast. In composition, contrast is a rhetorical strategy in which a writer identifies the differences between two people, places, ideas, or things here are some examples contrast composition and rhetoric.