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CT and MRI Techniques for Imaging Around Orthopedic Hardware.

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Metal artifacts from orthopedic implants degrade CT and MRI scans. This review covers techniques to improve imaging quality around hardware, aiding in early detection of complications.

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Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Orthopedic implants significantly degrade image quality in computed tomography (CT) and magnetic resonance imaging (MRI).
  • The increasing prevalence of orthopedic implants necessitates effective artifact reduction strategies.
  • Metal artifacts pose a challenge for diagnosing postoperative complications.

Purpose of the Study:

  • To review major artifacts caused by orthopedic hardware in CT and MRI.
  • To present state-of-the-art solutions for mitigating metal artifacts.
  • To highlight the importance of optimizing imaging techniques for orthopedic hardware.

Main Methods:

  • Review of current literature on metal artifact reduction in CT and MRI.
  • Discussion of artifact sources from device selection to post-processing.
  • Exploration of advanced techniques like dual-energy CT, virtual monochromatic imaging (VMI), and metal artifact reduction sequences (MARS).

Main Results:

  • Image quality is influenced by all stages of image acquisition and post-processing.
  • Dual-energy CT with VMI and advanced MRI sequences show promise in reducing artifacts.
  • Effective artifact reduction allows for better visualization of tissues surrounding orthopedic implants.

Conclusions:

  • Optimizing imaging parameters and employing advanced technologies are crucial for managing metal artifacts.
  • Dedicated artifact reduction techniques improve diagnostic accuracy in orthopedic imaging.
  • Early detection of postoperative complications is enhanced through improved imaging quality around implants.