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Related Concept Videos

Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

354
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
354

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Does Overall Treatment Time Impact Toxicity and Clinical Outcomes After Magnetic Resonance Imaging-Guided Stereotactic Body Radiotherapy to the Prostate? An evaluation of the Multi-OutcoMe EvaluatioN of radiation Therapy Using the MR-Linac Repository.

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MRI-guided prostate adaptive radiotherapy - A systematic review.

A J McPartlin1, X A Li2, L E Kershaw1

  • 1The Christie NHS Foundation Trust and Manchester Cancer Research Centre, University of Manchester, Manchester Academic Health Sciences Centre, UK.

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology
|May 11, 2016
PubMed
Summary
This summary is machine-generated.

Radiotherapy dose escalation improves prostate cancer outcomes. Advanced techniques and precise image-guided radiotherapy (IGRT) are crucial for safe treatment intensification and minimizing toxicity.

Keywords:
Adaptive radiotherapyIGRTMR-LinacMRIProstate

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Area of Science:

  • Oncology
  • Radiation Oncology
  • Medical Physics

Background:

  • Dose escalated radiotherapy offers improved outcomes for prostate cancer patients.
  • Higher risk disease may benefit from further dose escalation beyond current external beam radiotherapy (EBRT) limits.
  • Conformal techniques like intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) enable treatment intensification while reducing normal tissue toxicity.

Purpose of the Study:

  • To review the impact of motion on daily prostate position and mitigation strategies for improving image-guided radiotherapy (IGRT).
  • To discuss the role of Magnetic Resonance Imaging (MRI) in generating data on prostate motion.
  • To explore the potential of MR-Linac technology for next-generation IGRT.

Main Methods:

  • Review of published studies on prostate motion and its influence on daily position.
  • Analysis of techniques for mitigating motion-related uncertainties in radiotherapy.
  • Discussion of MRI's contribution to understanding prostate motion and its application in IGRT.

Main Results:

  • Prostate motion significantly influences daily treatment target position, necessitating accurate IGRT.
  • Optimal planning and IGRT are essential for minimizing uncertainties and enabling safe dose escalation.
  • Advanced imaging, particularly MRI, plays a vital role in quantifying motion and guiding precise treatment delivery.

Conclusions:

  • Minimizing uncertainties in prostate position is critical for safe dose escalation in radiotherapy.
  • Image-guided radiotherapy (IGRT), enhanced by MRI, is key to precise treatment delivery, especially for hypofractionated stereotactic therapy.
  • The MR-Linac offers potential for advanced, next-generation IGRT, improving accuracy and safety in prostate cancer treatment.