TTD
MIXING IT UP
ANATOMY and PT Care
Equipment & Techniques
Patient safety and imaging
100

The kidney has a TTD of?

2300

100

This imaging technique provides 3D volumetric images of the patient while they are on the treatment table, allowing for precise verification of internal anatomy before delivering radiation.

Cone Beam Computed Tomography (CBCT)

100

This is the most common early skin reaction to radiation, appearing as redness or irritation in the treatment area.

erythema 

100

This term describes beams that are directed from opposite sides of the body.

parallel opposed fields

100

In radiation oncology, it is legally required to use____ patient-specific identifiers to verify a patient's identity before administering any treatment or procedure. This standard is mandated by The Joint Commission and is widely adopted across healthcare settings to ensure patient safety.

2

200

A TTD of 6500 belongs to which organ?

Bladder

200

This high-dose radiation technique is used to treat small, well-defined tumors in the body, often in 1–5 fractions.

SBRT 

200

This more severe skin reaction involves the breakdown of the skin with weeping or oozing, typically occurring in high-dose regions.

Moist Desquamation 

200

A wedge filter is used to do this to the radiation dose distribution.

What is shape or modify the dose

200

This component shapes the radiation beam and is located inside the gantry head.

collimator

300

A TTD of 5500 belongs to which part of the body?

Skin

Esophagus

Liver

300

This high-precision treatment is typically used to treat brain lesions in a single session.

SRS

300

In topographical anatomy, the term “inferior” means towards what?

Towards feet

300

This material is placed on the patient’s skin to bring the radiation dose closer to the surface.

Bolus

300

Before delivering radiation, these two communication systems must be checked to ensure the therapist can monitor and communicate with the patient throughout treatment.

audio and visual system

400

A TTD of 4500 belongs to which organ?

Brain

Retina

Larynx

Colon

400

SBRT requires this advanced motion management technique when treating tumors in areas like the lungs or liver.

Respiratory gating or motion tracking 

400

In topographical anatomy, the terms “contralateral" means

On the opposite side of the body.

400

This invisible point in space represents the intersection of the beams and is the central reference for treatment delivery.

Isocenter


400

ODI stands for...

optical distance indicator 

500

The spinal cord (20cm) has a TTD of what?

4700

500

This term refers to dividing the total prescribed radiation dose into multiple smaller doses delivered over several sessions.

Fractionation

500

In topographical anatomy, the term “ipsilateral” means

SAME SIDE OF THE BODY

500

These are the three main components of a linear accelerator that work together to generate, shape, and deliver radiation to the patient.

Drive stand, gantry, PSA

500

This type of imaging pair is taken at 90-degree angles to each other to help localize the treatment isocenter in three dimensions. light projected from collimator to represent the radiation field is...

orthogonal pair

M
e
n
u