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- W2022378667 abstract "Objective Forensic practitioners are becoming more reliant on virtual models for identification, analysis, and evidence preservation. Image slice thickness can affect the quality of 3D reconstructions derived from medical images. Thinner slices result in higher quality models preserving critical anatomical details but can cause unnecessary wear on the scanner׳s tube. With limited standard imaging protocols and variation between technicians, it becomes essential to understand what level detail is lost with lower resolution scans. Materials and methods A series of cranial CT scans were acquired with a 0.625 mm slice thickness. The DICOM volumes were re-sliced into 1 mm, 1.25 mm, 3 mm, and 5 mm increments. The five different slice-thicknesses were imported into Mimics 17.0 for 3D reconstruction of the boney structures. Landmarks were placed to acquire standard cranial forensic measurements. These measurements were then compared among the five thicknesses. The 3D models were visually and numerically analyzed for overall differences in detail with 3-Matic 9.0. Results The greatest visual and numerical discrepancies were observed between 0.625 mm and 3–5 mm. Measurements along the axial plane were the most stable across slice-thicknesses. Vertical measurements showed the greatest range for inconsistency. Thinner, or air-filled sections of bone were obliterated with thicker slices. Conclusion Study shows that heads can be scanned safely at 1–1.25 mm so that critical detail for 3D modeling is preserved. With lower resolution models, there is a risk of losing data that can alter forensic findings." @default.
- W2022378667 created "2016-06-24" @default.
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- W2022378667 date "2014-04-01" @default.
- W2022378667 modified "2023-09-25" @default.
- W2022378667 title "2.13. It׳s all in the Details: The effect of CT slice thickness on 3D modeling for forensic analysis" @default.
- W2022378667 doi "https://doi.org/10.1016/j.jofri.2014.02.027" @default.
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