Radiation Oncology Practice Standards Vocabulary

This set of vocabulary flashcards covers key organizations, professional roles, technical definitions, and procedural standards outlined in the 2022 Radiation Oncology Practice Standards (Part A: Fundamentals) for Australia and New Zealand.

Radiation Oncology Alliance (ROA)

The peak group in radiation oncology, formed in 2019 from the Tripartite Committee, representing radiation oncologists, radiation therapists, medical physicists, and radiation oncology nurses.

The Royal Australian and New Zealand College of Radiologists (RANZCR)

The professional body whose Faculty of Radiation Oncology (FRO) represents medical specialist radiation oncologists.

Australian Society of Medical Imaging and Radiation Therapy (ASMIRT)

The professional organization representing radiation therapists in Australia.

Australasian College of Physical Scientists and Engineers in Medicine (ACPSEM)

The professional body representing radiation oncology medical physicists (ROMPs).

Cancer Nurses Society of Australia (CNSA)

The organization representing radiation oncology nurses (RONs) within the Radiation Oncology Alliance.

Baume Inquiry

A 2002 report titled 'A Vision for Radiotherapy' by Professor Peter Baume that identified national safety and quality issues, leading to the development of practice standards.

Radiation Oncology Practice Standards (ROPS)

A set of 16 standards categorized into Facility Management, Treatment Planning and Delivery, and Safety and Quality Management to ensure best practice in radiation therapy.

Radiation Oncology Medical Physicist (ROMP)

A specialist qualified in medical physics to perform dosimetric calculations, measurements, and monitoring, typically listed on the ACPSEM register.

Acceptance Testing

The process of verifying that hardware and software operate according to performance specifications agreed between the vendor and the customer.

Commissioning

The process of acquiring all necessary data from a piece of equipment to make it clinically useable in a specific department, involving data acquisition, beam modelling, and verification.

Dosimetry

The measurement of absorbed dose in matter resulting from exposure to ionizing radiations.

Gray (Gy)

The unit of absorbed radiation dose equivalent to the deposition of $1\,\text{joule per kilogram}$ of material ($1\,J\,kg^{-1}$).

Monitor Units (MU)

A measure of linear accelerator output; commonly calibrated so that $100\,MU$ delivers an absorbed dose of $1\,Gy$ under reference conditions.

Ready-for-care

The point when a patient is clinically prepared to start radiation treatment, excluding phases of postoperative healing, chemotherapy recovery, or patient-requested delays.

Clinical Target Volume (CTV)

A clinical volume containing a demonstrable Gross Tumour Volume (GTV) and/or subclinical microscopic malignant disease.

Planning Target Volume (PTV)

A geometrical concept used for treatment planning that surrounds the CTV with margins to account for all relevant uncertainties.

Organs at Risk (OAR)

Healthy tissues or organs whose radiation sensitivity may significantly influence treatment planning and/or the prescribed dose.

In-vivo Dosimetry

The measurement of absorbed dose to the patient at the time of treatment to verify delivery against the planned dose.

Isocentre

A point at the intersection of the rotational axes of the treatment gantry, collimator, and couch.

SABR/SBRT

Stereotactic ablative radiation therapy or stereotactic body radiation therapy.

Stereotactic Radiosurgery (SRS)

A highly precise form of radiation therapy used primarily for brain tumors and other localized abnormalities.

Intensity Modulated Radiation Therapy (IMRT)

An external beam radiation delivery method that optimizes dose distribution by dividing fields into small segments of varying intensity.

Inverse Treatment Planning

A planning method where the clinician defines target and critical structure dose goals, and a computer designs the fields to achieve the distribution.

Dosimetric Intercomparison

Participation in external programs, such as those by the ACDS, to compare local radiation dose delivery against a reference dosimetry center.

Incident

Any error, near miss, or adverse event relating to patient care or the safety of patients, visitors, and staff.

Radiation Management Plan

A document defining the responsibilities and delegations of all persons involved with radiation exposures and safety management (referred to as a Radiation Safety Plan in NZ).

Multileaf Collimator (MLC)

A device consisting of movable leaves used to provide conformal shielding of organs at risk during treatment.

Quality Assurance (QA)

Planned and systematic activities implemented to provide confidence that an entity will fulfill requirements for quality.

Anthropomorphic Phantom

A structure that models the radiation absorption and scattering properties of human tissues, used for Level III dosimetric intercomparisons.

Telehealth

The use of information and communication technologies (ICTs) to deliver healthcare services and transmit health information over distances.