Computed Tomography Technologist Practice Exam 2025 - Free CT Technologist Practice Questions and Study Guide

A biphasic injection in medical imaging specifically refers to the use of two different flow rates during the administration of a contrast agent. This method is particularly useful in enhancing the imaging of vascular structures, as it allows the clinician to optimize the timing and distribution of the contrast medium within the body, leading to improved visualization of tissues and abnormalities.

By employing varying flow rates, the imaging technique can take advantage of the differential timing of contrast arrival in different vascular structures. This results in better contrast between tissues, which can be crucial for accurate diagnosis. For example, a rapid initial phase followed by a slower phase can help delineate the characteristics of both vascular and non-vascular structures.

Understanding this concept can aid in grasping how contrast agents function in medical imaging, especially in computed tomography (CT) scans, where timing and flow rate can significantly affect the quality of the resulting images.