What are reconstruction artefacts generally caused by?

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Reconstruction artefacts in MRI are mainly caused by factors related to the data acquisition and the processing of that data, specifically in how the signals are received and interpreted. Extraneous RF interference refers to unwanted signals that can disrupt the intended radiofrequency signals during an MRI scan. This interference can lead to distortions in the final images, causing artefacts that can mimic or obscure actual anatomical structures.

The presence of these artefacts can significantly impact the diagnostic quality of the images produced, as they may lead to misinterpretation of the results. Understanding the causes of these artefacts helps in troubleshooting and improving the MRI imaging process, ensuring that images are as clear and accurate as possible for subsequent diagnoses.

Other factors related to reconstruction artefacts, like timing errors in RF pulse delivery or incorrect patient positioning, can also lead to image quality issues, but they do not directly relate to the broad category of interference during the data acquisition phase. Proper training and equipment calibration are essential to minimize these issues in MRI practices.

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