How does the use of iterative reconstruction impact image noise in CT compared to filtered back projection?

Which of the following algorithms is most commonly used in state-of-the-art computed tomography scanners to help reduce artifacts and patient dose?

Calculate the Pitch.  16 slice MDCT using a 5mm slice thickness, with a table feed of 80mm per rotation, and a matrix size of 1024×1024. 

The analog-to-digital converter (ADC) converts:

Which of the following is a process of applying a filter to an attenuation profile?

Attenuation of a beam of radiation depends on:

The process of converting the data from the attenuation profile to the matrix is known as:

The scanner gantry aperture is a measure of the:

A 29-yr-old woman is taking methotrexate to treat rheumatoid arthritis. Which information from the patient’s health history is important for the nurse to report to the health care provider related to the methotrexate?

When the nurse brings medications to a patient with rheumatoid arthritis, the patient refuses the prescribed methotrexate. The patient tells the nurse, “My arthritis isn’t that bad yet. The side effects of methotrexate are worse than the arthritis.” The most appropriate response by the nurse is