MRI —
Training activity: 14

Details

Set up and optimise methods for T₁, T₂ and T₂* mapping in a specified clinical context, comparing the suitability of different possible methods

Type

Developmental training activity (DTA)

Evidence requirements

Evidence the activity has been undertaken by the trainee​.

Reflection on the activity at one or more time points after the event including learning from the activity and/or areas of the trainees practice for development.

An action plan to implement learning and/or to address skills or knowledge gaps identified.

Considerations

• Pulse sequences and imaging parameters
• Relaxation processes
• Signal models and fitting
• Optimisation of imaging parameters for clinically relevant range of T₁/T₂/T₂* values
• Image analysis and associated software
• Experimental errors and uncertainties

Reflective practice guidance

The guidance below is provided to support reflection at different time points, providing you with questions to aid you to reflect for this training activity. They are provided for guidance and should not be considered as a mandatory checklist. Trainees should not be expected to provide answers to each of the guidance questions listed.

Before action

• Are there specific clinical contexts or methods for T1, T2, and T2 mapping that you should focus on?
• What do you need to know before embarking on the activity? What is your understanding of T1, T2, and T2 relaxation times and their clinical significance?
• What are different MRI methods for mapping these parameters? What factors influence the accuracy and precision of these methods?
• Consider the specific insights you hope to gain from engaging with the activity. How are T1, T2, and T2 maps generated?
• What are the strengths and limitations of different mapping techniques? How does the clinical context influence the choice of mapping method?
• Think about what you already know about the task / activity. Are you familiar with the basic principles of T1, T2, and T2 contrast in MRI?
• Discuss the training activity with your training officer to gain clarity of understanding. What is the specified clinical context for this activity? Which T1, T2, and T2 mapping methods should you investigate and compare?
• Consider possible challenges you might face during the activity, and think about how you might handle them. How will you set up and optimise the different mapping methods on the scanner?
• How will you objectively compare their suitability for the given clinical context? How will you address potential sources of error in the mapping process?
• Identify how you feel about embarking on this training activity. Are you interested in quantitative MRI techniques? What are your initial thoughts on the challenges of setting up and optimising these methods?

In action

• Pay attention to your actions.
  • How are you approaching the setup and optimisation of T1, T2, and T2 mapping methods for the specified clinical context?
  • What different methods are you considering?
  • What decisions are you making regarding the choice of mapping sequences, acquisition parameters, and image analysis techniques?
  • How are you comparing the suitability of different methods?
  • What aspects of T1, T2, and T2 relaxation mechanisms and mapping techniques feel intuitive, and what requires more conscious application of theoretical knowledge and practical considerations?
• How effective are your actions in setting up and optimising different mapping methods and comparing their performance in the given clinical context?
  • What challenges are you facing during this process (e.g., selecting appropriate sequences, optimising parameters for accurate quantification, dealing with motion or other artefacts)?
  • What can you learn about the strengths and limitations of different T1, T2, and T2 mapping techniques in a clinical setting?
  • How does this activity connect to your understanding of MR relaxation times and their clinical significance for tissue characterisation?
• Are there alternative mapping methods or optimisation strategies you should be considering?
  • What support or guidance might you need in this moment, such as advice on sequence selection or image analysis from experienced colleagues or literature?
  • Are you ensuring your comparison of methods focuses on factors relevant to clinical utility and accuracy?

On action

• What were the different methods you explored for T1, T2, and T2 mapping?
  • How did you approach the process of setting up and optimising each method?
  • What were the key differences you observed in the results and suitability of the different methods for the specified clinical context?
• What did you learn about the principles and practical implementation of quantitative MRI techniques like T1, T2, and T2 mapping?
  • Did you gain a better understanding of the strengths and limitations of different mapping methods?
  • What did you learn about the factors that influence the accuracy and reliability of these quantitative measurements?
• How will this knowledge inform your use and interpretation of quantitative MRI data in clinical practice?
  • What specific mapping techniques will you investigate further for different clinical applications?
  • How might you contribute to the development and validation of quantitative MRI protocols in your department?

Beyond action

• Have you subsequently used or encountered T1, T2, or T2 mapping in other clinical contexts, and reflected on the advantages and limitations of the methods employed?
• Have you compared the image quality and quantitative results obtained from different mapping techniques for similar clinical questions, either in practice or through literature review?
• Have you discussed the clinical utility and technical challenges of various MRI mapping methods with colleagues or in relevant professional forums?
• How has this activity enhanced your understanding of the principles and practical considerations of quantitative MRI mapping techniques?
• Has this experience improved your ability to select and optimise appropriate T1, T2, or T2 mapping methods for specific clinical applications, considering factors like accuracy and scan time?
• How has the learning from this training activities influenced your approach to processing and interpreting quantitative MRI data for tissue characterisation?
• How will your expertise in MRI mapping support your ability to implement and evaluate new quantitative MRI techniques or applications within your department?
• What clear actions for continued development in your knowledge of advanced quantitative MRI methods, image analysis techniques, or the clinical significance of tissue relaxation times have you identified?
• How might this experience contribute to your ability to educate other healthcare professionals on the principles and clinical utility of MRI mapping techniques?

Relevant learning outcomes

#	Outcome
# 1	Outcome Use MRI equipment safely to obtain images.
# 2	Outcome Model signals and perform image reconstruction.
# 5	Outcome Optimise sequence parameters for specific clinical needs.