ArticlePractical radiation oncology
Distortion inherent to magnetic resonance imaging can lead to geometric miss in radiosurgery planning.
Article in Practical radiation oncology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.
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Who cites it
49 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Quality requirements for MRI simulation in cranial stereotactic radiotherapy: a guideline from the German Taskforce "Imaging in Stereotactic Radiotherapy".Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2024Guideline
- Image-Based Identification and Localisation of Changes in Intraoperative Brain Tumour Resection.Journal of imaging informatics in medicine · 2026Article
- Dosimetric and spatial impact of high-resolution SPACE MRI on target delineation for glomus tumor radiosurgery: a retrospective cohort study.Journal of neuro-oncology · 2026Article
- MICAFlow: Fast and robust MRI preprocessing bridging research neuroimaging and clinical practice.Imaging neuroscience (Cambridge, Mass.) · 2026Article
- Characterizing geometrical distortions in MRI for radiotherapy: Evaluating MR-SIM protocols and dose accuracy in stereotactic radiosurgery using AAPM TG-284 criteria.Journal of applied clinical medical physics · 2025Article
- Optimizing MRI Protocols for Brain Radiosurgery: The Role of Sequence and Contrast Agent Timing.Investigative radiology · 2025Article
- A self-gated 4D-MRI sequence for internal target volume delineation in liver: Phantom and pre-clinical validation.Journal of applied clinical medical physics · 2025Article
- MRI distortion correction is associated with improved local control in stereotactic radiotherapy for brain metastases.Scientific reports · 2025Article
- Use of a virtual phantom to assess the capability of a treatment planning system to perform magnetic resonance image distortion correction.Physical and engineering sciences in medicine · 2025Article
- Virtual phantom methodology for assessment of MRI distortion correction in high-precision stereotactic radiosurgery treatment planning.Frontiers in oncology · 2025Article
- Article
- Evaluating stereotactic accuracy with patient-specific MRI distortion corrections for frame-based radiosurgery.Journal of applied clinical medical physics · 2024Article
- CNN-based multi-modal radiomics analysis of pseudo-CT utilization in MRI-only brain stereotactic radiotherapy: a feasibility study.BMC cancer · 2024Article
- Impact of magnetic resonance imaging-related geometric distortion of dose distribution in fractionated stereotactic radiotherapy in patients with brain metastases.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2024Article
- Assessing the impact of distortion correction on Gamma Knife radiosurgery for multiple metastasis: Volumetric and dosimetric analysis.Brain & spine · 2024Article
- Relationship between imaging parameters and distortion in magnetic resonance images for gamma knife treatment planning.Journal of applied clinical medical physics · 2023Article
- Comprehensive MR imaging QA of 0.35 T MR-Linac using a multi-purpose large FOV phantom: A single-institution experience.Journal of applied clinical medical physics · 2023Article
- Assessment of MRI image distortion based on 6 consecutive years of annual QAs and measurements on 14 MRI scanners used for radiation therapy.Journal of applied clinical medical physics · 2023Article
- System-dependent image distortion related to gantry positions of a 0.35 T MRgRT: Characterization and the corresponding correction.Journal of applied clinical medical physics · 2023Article
- Characterizing geometric distortions of 3D sequences in clinical head MRI.Magma (New York, N.Y.) · 2022Article
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16 authors.
Funding
Abstract
purposeAnatomic distortion is present in all magnetic resonance imaging (MRI) data because of nonlinearity of gradient fields; it measures up to several millimeters. We evaluated the potential for uncorrected MRI to lead to geometric miss of the target volume in stereotactic radiosurgery (SRS). METHODS AND MATERIALS: Twenty-eight SRS cases were studied retrospectively. MRI scans were corrected for gradient nonlinearity distortion in 3 dimensions, and gross tumor volumes (GTVs) were contoured. The manufacturer-specified distortion field was then reapplied to GTV masks to allow measurement of GTV displacement in uncorrected images. The uncorrected GTV was used for SRS planning, and the dose received by the true (corrected) GTV was measured.
resultsMedian displacement of the GTV resulting from gradient distortion was 1.2 mm (interquartile range, 0.1-2.3 mm), with a minimum of 0 mm and a maximum of 3.9 mm. Eight of the 28 cases met a priori criteria for "geometric miss."
conclusionsAlthough MRI distortion is often subtle on visual inspection, there is a significant clinical impact of this distortion on SRS planning. Distortion-corrected MRI should uniformly be used for intracranial radiosurgery planning because uncorrected MRI can lead to potential geometric miss.
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