Peer-reviewed veterinary case report
Reducing metal artifacts in dog knee MRI after surgery
By Kim, Sojin et al.·Published in Journal of veterinary science·2026·College of Veterinary Medicine, South Korea·View original on PubMed →
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Original publication title: Use of MAVRIC-SL for metal artifact reduction in postoperative canine stifle MRI.
- Species:
- dog
Plain-English summary
A group of dogs that had surgery to fix a torn cranial cruciate ligament (CCL) were given special MRI scans to check how well the surgery worked. These scans used a technique called MAVRIC-SL, which helps reduce blurriness caused by the metal implants used in the surgery. The results showed that MAVRIC-SL provided clearer images, making it easier to see the cartilage and bones around the knee joint compared to standard MRI techniques. This means that using MAVRIC-SL can help veterinarians better assess the condition of dogs after CCL surgery.
People also search for: dog knee surgery recovery · CCL tear treatment in dogs · MRI for dog with metal implants
Abstract
IMPORTANCE: Cranial cruciate ligament rupture (CCLR) is a common cause of pelvic limb lameness in dogs. Surgical correction using metallic implants is commonly performed; however, using postoperative magnetic resonance imaging (MRI) for evaluation is limited owing to susceptibility artifacts. OBJECTIVE: This study aimed to determine whether a multiacquisition variable-resonance image combination-selective (MAVRIC-SL) sequence, which reduces susceptibility artifacts, is useful for postoperative evaluation. METHODS: MRI was performed on four dogs that underwent CCLR correction using metallic implants. Imaging was performed with MAVRIC-SL and two-dimensional fast spin echo (2D-FSE) sequences, including proton density (PD), PD fat-suppressed (F/S), and T2-weighted F/S. The artifact area for each sequence was quantitatively analyzed. A four-level qualitative image analysis was performed to assess image artifacts, cartilage delineation, and visualization of the cranial cruciate ligament and bone. RESULTS: The artifact area was significantly reduced with MAVRIC-SL than with 2D-FSE, regardless of the metal materials used. In addition, the amount of artifact, cartilage delineation, and visualization of the bone were significantly improved with MAVRIC-SL compared with 2D-FSE. CONCLUSIONS AND RELEVANCE: In this preliminary study, the MAVRIC-SL sequence improves postoperative MRI evaluation by reducing susceptibility artifacts in dogs with CCLR treated with metallic implants.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/41947681/