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Everything you need to know about Computed Tomography (CT) & CT Scanning

CT Techniques and Principles, Including Mpr and 3D: Foreign Bodies Imaging Pearls - Educational Tools | CT Scanning | CT Imaging | CT Scan Protocols - CTisus
Imaging Pearls ❯ CT Techniques and Principles, including MPR and 3D ❯ Foreign Bodies

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  • “Traumatic wounds and lacerations are a common reason for patients to present to emergency departments, with retained foreign bodies (FBs) accounting for 7%-15% of cases, particularly those involving the extremities. These retained materials result in a granulomatous tissue response known as an FB reaction, a pathologic attempt to isolate the FB from the host. The most common FB materials are glass, metal, and wood, but other compositions can also be found, such as plastic and animal-derived materials. Clinical history, physical examination, and wound exploration are essential in investigation of retained material but are not sufficient to exclude an FB, and additional investigation is required. Imaging evaluation is a useful tool to help depict and locate an FB, assess possible complications, and guide removal.”
    Carneiro BC et al.  Multimodality Imaging of Foreign Bodies: New Insights into Old Challenges.
    Carneiro BC et al.  
    Radiographics. 2020 Nov-Dec;40(7):1965-1986.
  • “Surgical sponges retained after laparotomy represent a diagnostic problem if they cannot be identified by radiopaque markers on standard radiographs. We report on 9 patients from different hospitals with an abdominal gossypiboma 7 days to 21 years after the surgical procedure. Plain radiographs may suggest the diagnosis if a textile foreign body is calcified, that is, is equipped with radiopaque marker, or when a characteristic "whirl-like" pattern is present. CT and US are necessary procedures in chronic cases, since the lesion may mimic a mass; US shows specific echogenic areas with acoustic shadow; CT usually reveals a hypodense mass with a thick peripheral rim.”
    Retained surgical gauzes: acute and chronic CT and US findings.
    Liessi G et al.  
    Eur J Radiol. 1989 Aug;9(3):182-6. PMID: 2680489.
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