Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
The simulation process is the ____ step after _________ and _______________.
|
3rd, diagnosis, therapeutic decision
|
|
|
|
The simulation process can be ___________ or ___________.
|
Simple, complex
|
|
|
|
The simplicity or complexity of the simulation process depends on these three things
|
Type of cancer
extent of the tumor proximity to normal surrounding tissue |
|
|
|
what is the purpose of the simulator?
|
To assist the physician and members of the radiation therapy team in the treatment planning process
|
|
|
|
Conventional simulation is designed to simulate these three conditions, of the linear accelerator
|
Mechanical
geometrical optical |
|
|
|
Patient data is collected using CT images in what plane?
|
Transverse
|
|
|
|
What does the term DRR stand for
|
Digitally reconstructed radiographs
|
|
|
|
Doctor and dosimetrist can plan treatment without the patient being present using this
|
Virtual simulation
|
|
|
|
During this process side lasers and an overhead laser are used to triangulate three reference points on the patient
|
Conventional Simulation
|
|
|
|
For breast treatments leveling tattoos will be placed on the __________ and __________ of the affected breast
|
Sternum, lateral aspect
|
Biangulation
|
|
|
This setup is mostly used with breast treatments
|
Biangulation
|
sternum and lateral aspect
|
|
|
After the target volume has been determined the computer calculates the isocenter using these as reference points
|
Temporary markers
|
|
|
|
This is done after simulation is complete
|
Treatment planning
|
|
|
|
The geometric definition of the position and extent of the tumor or anatomic structures by reference of surface marks that can be used for treatment setup purposes.
|
Localization
|
|
|
|
A final check that each of the planned treatment beams does cover the tumor or target volume and does not irradiate critical normal structures
|
Verification
|
|
|
|
Refers to a material with high atomic number, used on the surface of the patient or appropriately placed in a body cavity.
|
Radiopaque marker
|
usually made of lead, copper, or solder wire
|
|
|
Involves the dimensions of a treatment field at the isocenter, which are represented by width x length
|
Field size
|
|
|
|
Indicates the gross palpable or visible tumor.
|
Gross Tumor Volume
|
|
|
|
Indicates the gross palpable or visible tumor ( GTV) and a surrounding volume of tissue that may contain subclinical or microscopic disease.
|
Clinical Target Volume (CTV)
|
|
|
|
Indicates the CTV plus margins for geometric uncertainties, such as patient motion, beam penumbra, and treatment setup differences
|
Planned Target volume (PTV)
|
|
|
|
Volume of tissue receiving a significant dose (e.g., >50%) of the specified target dose
|
Irradiated volume
|
|
|
|
The volume enclosed by the isodose surface selected as being appropriate to achieve the purpose of treatment (i.e., the volume enclosed by the prescription isodose surface).
|
Treated volume
|
|
