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MRI and CT Imaging Fusion in Radiation Oncology

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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?

To ensure radiation dose consistency Signup and view all the answers

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

Revealing alterations in tissue microstructure vs. macrostructure Signup and view all the answers

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

Multiple contrasts for functional information Signup and view all the answers

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

Higher contrast resolution compared to CT Signup and view all the answers

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

Blood oxygen level-dependent imaging Signup and view all the answers

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

Geographical accuracy for beam arrangement Signup and view all the answers

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

Eliminates the need for image registration Signup and view all the answers