Images made within the first 3 minutes after injection for excretory urography that demonstrate a hazy opacification to the entire kidney structure are referred to as:

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Following injection of the contrast agent for urography, the contrast agent mixes and circulates with the blood until it reaches the kidneys, which excrete it. As a component of urine, the contrast medium first opacifies the outer portion of the kidney as it fills the tiny vessels and glomeruli in the cortex and the collecting tubules in the medulla. This imparts a hazy opacification to the entire kidney structure, which quickly disappears with normal function. Images made within the first 3 minutes after injection to visualize this phase are referred to as nephrograms and are used in the evaluation of hypertensive patients.

Images Made Within the First 3 Minutes After Injection for Excretory