The Consequences of Moving During an MRI or CT Scan: What You Need to Know

In medical imaging such as MRI and CT scans, maintaining stillness during the procedure is crucial for obtaining accurate diagnostic images. Moving during an MRI or CT scan can have significant consequences, ranging from suboptimal images to a complete waste of time and resources. Understanding these potential outcomes is important for both healthcare providers and patients.

Understanding the Impact of Movement

The best outcome when moving during an MRI or CT scan is a suboptimal yet still useful exam. However, the worst-case scenario involves a completely useless and wasted examination, which could lead to additional risks such as unnecessary radiation exposure and the need to repeat the scan. Unlike MRIs, which can be repeated with minimal drawbacks, a CT scan that needs to be redone would result in a doubled dose of radiation and contrast material. Both outcomes are undesirable, and it is crucial to understand how to avoid these issues.

Movement during an MRI or CT scan can result in non-diagnostic images with artifactual appearances. These appearances can mask or mimic true pathology, leading to misdiagnosis or missed conditions. Additionally, the need to repeat the scan results in a waste of time and resources, potentially causing further radiation exposure in the case of repeated CT scans.

Importance of Patient Stillness

Patients must maintain stillness to ensure the quality of the scan. Any movement within the imaging time can cause artifacts, leading to blurry images that may obscure normal anatomy or incorrectly represent pathology. While some movements, such as tremors or controlled breathing, are unavoidable, there are ways to mitigate discomfort and help maintain stillness.

Tips for Reducing Movement During Scans

To help prevent unnecessary movements during a scan, the following steps can be taken:

Comfort Measures: Use pillows and supports to improve comfort. For example, placing pillows under the lower legs can help support the patient's position, and positioning the spine in a more comfortable configuration can reduce discomfort. Proper positioning can also prevent artifacts due to positioning issues. Preparation and Explanation: Take the time to explain the scanning process, what the patient will see and hear, and provide them with practice for any required breathing instructions. This can help the patient feel more at ease and understand the process better. Equipment Adjustment: Ensure all IV lines, catheters, and other equipment are properly positioned to avoid snags or discomfort during the scan. If the patient is claustrophobic, provide them with relaxation techniques or medications to reduce anxiety. Clinician Assistance: If the patient finds it difficult to maintain a position or follow breathing instructions, inform the scan operator immediately. They can offer adjustments or compromises to improve the situation for the patient.

Final Considerations

By taking the time to properly prepare and position the patient, healthcare providers can significantly improve the quality of the scan and the patient's overall experience. Proper patient positioning is not only crucial for obtaining accurate diagnostic images but also for ensuring patient comfort and safety. Remember, the goal is to achieve diagnostic-quality images without causing unnecessary discomfort or risk.

Stay informed about best practices in patient positioning and movement management to ensure the most accurate and effective medical imaging results.