A Patient Is Treated on a 6-MV Machine at 100

question 38

Multiple Choice

A patient is treated on a 6-MV machine at 100 cm SSD.The collimator setting is 15 × 15.There is no blocking used for this treatment.The prescription states that a dose of 3000 cGy is to be delivered to a depth of 3 cm in 10 fractions using a posterior treatment field using the nonisocentric method of calculation.The patient central axis separation is 20 cm.What is the MU setting for the treatment? Reference dose rate (RDR) for a 15 cm equivalent square is 0.993 cGy/MU.

• A) 315
• B) 321
• C) 319
• D) 317

Understand the role of random assignment and experimental control in establishing causal relationships.

Identify the consequences of failing to control extraneous variables in experimental research.

Appreciate the importance of controlling for participant characteristics in experimental designs.

Recognize the significance of pretest-posttest designs in measuring the effect of interventions.

---

Definitions:

Challenge

A task or situation that requires someone to use their skills and abilities to overcome obstacles and achieve a goal.

Impression Management

The process of deliberately controlling or influencing the perceptions of others about oneself, typically to gain social or personal advantages.

Ingratiation

A social influence strategy used to make oneself more likable to others, often through flattery or by conforming to their opinions.

Voluntary Tasks

Activities or duties undertaken willingly without coercion, often beyond the required or expected norms.