{
  "abstract": "Introduction Chronic low back pain is a major cause of disability worldwide. Periradicular therapy is effective when conservative treatments fail. Fluoroscopy and CT are standard guidance tools but involve radiation exposure. MRI-guided interventions offer high soft-tissue contrast and no radiation, making them increasingly attractive. Recent low-field MRI systems, such as the 0.55-T Magnetom Free.Max, with large bore sizes and real-time imaging, present new opportunities for safe and precise spinal interventions.Aim of Study This study aimed to evaluate the accuracy and feasibility of real-time 0.55-T MRI-guided lumbosacral periradicular injections. Results were compared to CT-guided procedures with and without a laser navigation system, assessing technical success, needle positioning quality, puncture time, and overall intervention duration in a controlled phantom model.Method Five radiologists with varying experience levels performed nine randomized PRTs each on a lumbar spine phantom under MRI, CT with laser, and conventional CT guidance. Accuracy was assessed by two senior neuroradiologists using a 5-point scale. Puncture and total procedure times were recorded. MRI procedures used real-time BEAT IRT TRUFI sequences; CT-guided procedures were conducted with identical technical parameters.Abstract A354 Figure 1Results All procedures were technically successful. Needle placement quality was high across all modalities, with MRI scoring slightly better. No significant difference in puncture times was noted, but MRI-guided procedures had longer total durations compared to CT-guided methods due to planning sequences.Abstract A354 Figure 2Conclusion Real-time MRI-guided lumbosacral PRT using a 0.55-T system is feasible and accurate. Low-field MRI offers a radiation-free, high-precision alternative for spinal interventions and has promising clinical potential with further workflow optimization.Conflict of Interest No",
  "authors": [
    {
      "affiliations": [
        "Department of Radiology, Neuroradiology and Nuclear Medicine, Johannes Wesling University Hospital, Ruhr University Bochum, Bochum, Germany"
      ],
      "name": "Saher Saeed"
    },
    {
      "affiliations": [
        "Department of Radiology, Neuroradiology and Nuclear Medicine, Johannes Wesling University Hospital, Ruhr University Bochum, Bochum, Germany"
      ],
      "name": "Christoph Moenninghoff"
    },
    {
      "affiliations": [
        "Department of Radiology, Neuroradiology and Nuclear Medicine, Johannes Wesling University Hospital, Ruhr University Bochum, Bochum, Germany"
      ],
      "name": "Jan Borggrefe"
    },
    {
      "affiliations": [
        "Department of Radiology, Neuroradiology and Nuclear Medicine, Johannes Wesling University Hospital, Ruhr University Bochum, Bochum, Germany"
      ],
      "name": "Jan Robert Kröger"
    }
  ],
  "title": "A354 Real-time MR-guided lumbosacral periradicular injection therapy using a 0.55 T MRI system: a phantom study",
  "uid": "6749a82f-dd4b-5f63-a24e-772e263ebe64"
}