Which factors affect patient dose during fluoroscopy?

The correct choice reflects the understanding that several factors contribute to the patient's radiation dose during fluoroscopy.

Distance between the patient and the input phosphor is a fundamental principle in radiation exposure. As the distance increases, the amount of radiation reaching the patient decreases according to the inverse square law. Therefore, the closer the patient is to the input phosphor, the higher the dose they receive.

The amount of magnification during fluoroscopy also plays a significant role in patient dose. When images are magnified, additional x-ray exposure is often required to produce a sufficiently detailed image, which can consequently increase the dose.

Tissue density is another crucial factor impacting dose. Denser tissues will absorb more radiation than less dense tissues, leading to variations in the amount of radiation that penetrates through or is scattered from different types of tissues within the body.

All these factors—distance, magnification, and tissue density—interrelate and influence the overall radiation dose received by the patient during fluoroscopic procedures, making the comprehensive answer the most accurate choice. Understanding these elements is essential for minimizing patient exposure and ensuring safe practices in fluoroscopy.