Computed Tomography Technologist Practice Exam

Helical imaging, also known as spiral imaging, utilizes a continuous movement of the CT scanner as it rotates around the patient. This technique results in the acquisition of overlapping images while maintaining a consistent and low radiation dose. By continuously spiraling around the patient during the scan, helical imaging optimizes the data collection process and improves the quality of the images produced.

The overlaps in imaging allow for better reconstruction of the data, leading to enhanced detail and clarity in the scanned areas. Additionally, this method contrasts sharply with other imaging types, as traditional 2D imaging may require multiple separate images to be captured, which can lead to higher doses of radiation due to increased exposure time.

Though digital imaging refers to the use of digital technology to capture and manage images, it does not specifically address the overlapping characteristics or the relationship to patient dose. Furthermore, while spiral and helical imaging are often used interchangeably, the question prompts for a specific technique that embodies the characteristics of obtaining overlapping images while avoiding increased radiation exposure, which is precisely what helical imaging achieves.