Final answer:
CT phantoms are used to evaluate the performance and accuracy of a CT scanner. They mimic the human body and contain materials with known properties to test and calibrate the imaging capabilities of the scanner.
Step-by-step explanation:
The CT phantom pictured below is used to evaluate the performance and accuracy of a CT scanner. CT phantoms are physical objects that mimic the human body and contain various materials with known properties. They are used to test and calibrate the imaging capabilities of the scanner, such as resolution, contrast, and noise.
CT phantoms are often made of materials like acrylic, water, or gelatin, and may include inserts with different densities or shapes to simulate different structures or abnormalities in the body. By scanning the phantom and comparing the resulting images to the known properties of the phantom, radiologists and technicians can assess the quality and reliability of the CT scanner.
In addition to evaluating scanner performance, CT phantoms can also be used for training and education purposes. They provide a realistic and controlled environment for medical professionals to practice interpreting CT images and identifying various anatomical structures and pathologies.