MRI and CT Imaging Fusion in Radiation Oncology
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Questions and Answers

Which imaging technique is known for its superior spatial localization compared to MRI?

  • Computed Tomography (CT) (correct)
  • Single Photon Emission Computed Tomography (SPECT)
  • Ultrasonography
  • Positron Emission Tomography (PET)

What is one of the advantages of MR-Guided Radiation Therapy (MRgRT) over traditional CT-based treatment planning?

  • Inability to track tumor movement during treatment
  • Limited sensitivity in matching tumor tissue
  • Improved position verification through direct tumor tissue matching (correct)
  • Dependency on bony anatomy for position verification

What does Radiomics aim to achieve through the computerized extraction of data from images?

  • Measurement of tumor size only
  • Decrease in machine learning integration
  • Improved treatment response measurement
  • Exploration of tumor heterogeneity and habitats (correct)

Why is daily evaluation of contours important in the context of advanced treatment techniques?

<p>To ensure radiation dose consistency (B)</p> Signup and view all the answers

What is the main focus of functional techniques in assessing early treatment response?

<p>Revealing alterations in tissue microstructure vs. macrostructure (C)</p> Signup and view all the answers

What is a key advantage of CT-based planning in radiotherapy?

<p>Multiple contrasts for functional information (A)</p> Signup and view all the answers

Why is MRI preferred for the visualization of certain tumors in radiotherapy planning?

<p>Higher contrast resolution compared to CT (C)</p> Signup and view all the answers

What advantage does Dynamic Contrast Enhanced (DCE) MRI offer in radiotherapy planning?

<p>Blood oxygen level-dependent imaging (B)</p> Signup and view all the answers

What challenge is faced when using MRI in the radiation therapy treatment position?

<p>Geographical accuracy for beam arrangement (A)</p> Signup and view all the answers

What advantage does MR-Simulation offer in the context of radiation therapy?

<p>Eliminates the need for image registration (C)</p> Signup and view all the answers

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