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Questions and Answers
What is the main difference between VMAT and normal IMRT?
What is the main difference between VMAT and normal IMRT?
- VMAT continuously rotates around the patient during beam delivery, while IMRT stops at a certain angle to deliver the modulated dose. (correct)
- VMAT is designed for tumors with specific shapes, while IMRT is for all types of tumors.
- VMAT uses a different type of radiation, while IMRT uses traditional radiation beams.
- VMAT delivers radiation in bursts, while IMRT delivers radiation continuously.
What is the role of medical physicists in VMAT treatment planning?
What is the role of medical physicists in VMAT treatment planning?
- They directly administer the VMAT treatment to the patient.
- They perform surgery to prepare the patient for VMAT treatment.
- They assign the upper limit of dose to the target volume and the lower limit of dose to OARs for treatment planning. (correct)
- They analyze the patient's response to VMAT after treatment.
Which computer algorithm is used in VMAT treatment planning to achieve the optimal beam plan based on assigned limits?
Which computer algorithm is used in VMAT treatment planning to achieve the optimal beam plan based on assigned limits?
- The Newton-Raphson algorithm
- The Gradient Descent algorithm
- The Genetic Algorithm
- The Monte Carlo algorithm (correct)
What is the purpose of inverse planning technique in VMAT treatment planning?
What is the purpose of inverse planning technique in VMAT treatment planning?
What is the primary site of origin for nasopharyngeal carcinoma (NPC)?
What is the primary site of origin for nasopharyngeal carcinoma (NPC)?
What is the initial presentation in many individuals with nasopharyngeal carcinoma (NPC)?
What is the initial presentation in many individuals with nasopharyngeal carcinoma (NPC)?
In nasopharyngeal carcinoma (NPC), where else can the tumour extend to, apart from the nasopharynx?
In nasopharyngeal carcinoma (NPC), where else can the tumour extend to, apart from the nasopharynx?
What is the role of CT simulation in the treatment planning process for nasopharyngeal carcinoma (NPC)?
What is the role of CT simulation in the treatment planning process for nasopharyngeal carcinoma (NPC)?
What is the purpose of immobilization devices in CT simulation for nasopharyngeal carcinoma (NPC) treatment planning?
What is the purpose of immobilization devices in CT simulation for nasopharyngeal carcinoma (NPC) treatment planning?
Which region is frequently involved in metastasis due to nasopharyngeal carcinoma (NPC)?
Which region is frequently involved in metastasis due to nasopharyngeal carcinoma (NPC)?
Which imaging modalities are used to diagnose small tumours in the nasopharynx?
Which imaging modalities are used to diagnose small tumours in the nasopharynx?
What does the TNM classification system consider in nasopharyngeal carcinoma cases?
What does the TNM classification system consider in nasopharyngeal carcinoma cases?
What is the most common symptom of nasopharyngeal carcinoma according to the text?
What is the most common symptom of nasopharyngeal carcinoma according to the text?
What is the treatment modality specifically mentioned as effective for nasopharyngeal carcinoma in the text?
What is the treatment modality specifically mentioned as effective for nasopharyngeal carcinoma in the text?
What is the role of the TNM system in cancer staging?
What is the role of the TNM system in cancer staging?
What type of radiotherapy is volumetric modulated arc therapy (VMAT)?
What type of radiotherapy is volumetric modulated arc therapy (VMAT)?
What is the tool used by doctors to describe the stage in nasopharyngeal carcinoma cases?
What is the tool used by doctors to describe the stage in nasopharyngeal carcinoma cases?
What does the T in TNM classification system stand for in nasopharyngeal carcinoma cases?
What does the T in TNM classification system stand for in nasopharyngeal carcinoma cases?
What is the purpose of inverse planning technique in VMAT treatment planning?
What is the purpose of inverse planning technique in VMAT treatment planning?
What does Node (N) describe in cancer staging according to TNM system?
What does Node (N) describe in cancer staging according to TNM system?
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