Imaging and RT Planning
This type of 4DCT is where you collect images in a specific breathing phase, not throughout the entire range of motion like in retrospective 4DCT.
What is prospective 4DCT?
Modern electronic portal imaging systems use this type of element in their detectors, typically amorphous.
What is Silicon?
Batho, who studied in Vancouver, invented this correction method by using the ratio of TPR or TMRs and this physical property in its correction factor.
What is (entrance or exit) density?
These red, blue or green emitting devices are typically mounted on walls or a ceiling and to provide a patient-accessible frame of reference.
What are (external) lasers?
This type of treatment unit, invented by Dr Rock Mackie, is engineered to deliver IMRT using a fan-beam photon beam.
What is a Tomotherapy unit?
This is a mathematically constructed 3D image consisting of the maximally observed CT number observed in the 4DCT dataset in a specific image coordinate.
What is a Maximum Intensity Projection?
The first "C" in CBCT.
Often coupled with ice cream.
What is cone? (Cone beam CT)
The dose to material is the dose to water multiplied by the ratio of water/material of this physical property.
What is stopping power (of the material)?
These large, often perforated, sheets of material used to immobilization the patients' head during radiation treatments.
What are thermoplastic masks? (vendor names would be acceptable, such as 'aquaplast').
When you are correcting for a set-up discrepancy, you typically either shift the couch or this.
What is the patient?
This type of imaging modality uses the differences in radio-frequency processions of protons throughout the body to create contrast.
What is Magnetic Resonance Imaging?
Megavoltage CBCT offers an advantage over kilovoltage CBCT as it can help reduce artifacts from objects having this physical property.
What are high density or metallic objects?
It is the 'P' in CPE.
What is particle? (Charged particle equilibrium).
When performing field-matching, it is the plane where two adjacent fields meet.
Or where two railroads cross.
What is a junction?
The medical physicist who has a PTV recipe named after him.
Who is Van Herk (formula)?
This effect is when crystals vibrate at ultrasonic frequencies when subjected to an oscillating electric field.
(Pierre Curie and his brother discovered this.)
What is piezoelectric effect?
The "S" in SGRT.
No, not stereotactic.
What is surface? (Surface guided RT)
It is what AAA, a commercialized inhomogeneity correction algorithm, stands for.
Analytic Anisotripic Algorithm
The number of degrees of freedom a robotic couch can move.
What is six?
There is respiratory, cardiac, and this kind of involuntary motion of internal organs.
What is peristaltic (or gastro-intenstinal) motion?
In PET images, its what SUV stands for
(not simply useless value, nor sports utility vehicle).
What is Specific Uptake Value?
A brand of EM fiducial tracking system, or a style of Afro-Caribbean music that originated in Trinidad and Tobago.
What is Calypso?
What CC stands for.
Or destruction of your ice cream eating apparatus.
What is collapsed cone.
In human breast treatments, the deep inspiration breath hold technique primarily helps to reduce this type of (major organ) risk.
What is cardiac toxicity?
The first (and only?) Medical Physicist to win a Nobel Prize.
Her daughter won one as well.
Who is Marie Curie?