A Patient Is to Be Treated with a Pelvic Field

question 24

Multiple Choice

A patient is to be treated with a pelvic field on a linear accelerator.The patient is quite obese and the port films show that the field shifts superiorly and inferiorly on a daily basis.What bony landmark may measurements be taken from to stabilize this treatment portal?

• A) Umbilicus
• B) Anterior superior iliac spine (ASIS)
• C) Pubic symphysis
• D) Patella

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Definitions:

Disclosed Principal

A disclosed principal is a party whose identity is known by all involved parties at the time a transaction is entered into with an agent.

Undisclosed Principal

is a party in a contractual agreement whose existence and identity are not revealed to the third party at the time of contract formation, often in agency relationships.

Express Authorization

Directly stated or clearly indicated authority given for an action or procedure.

Principal's Intention

In a contractual agreement, it refers to the primary party's goal or objective intended through the contract.