Can advanced edge enhancement software improve image quality to visualise tubes, catheters and wires in digital chest radiographs?

Kristensen, S.V.; Outzen, Claus Bjørn; Grau, L.M.; Larsen, T.R.; Bidstrup, M.; Egeskjold, M.V.; Knude, J.A.; Juhl, Dorte; Precht, Helle

doi:10.1016/j.radi.2022.10.012

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Our study relied on QCT software to segment vertebral bodies into 9 zones and then calculated the mean vBMD of different regions, which may explain the common wedge and biconcave deformity of the vertebral body from the perspective of cancellous vBMD. However, the ability of bone to resist deformity and/or fracture is known as bone strength and depends not just on BMD but also on bone quality, which relates to such factors as bone architecture, turnover, mineralization, and cellularity (21). Structures (such as muscles, ligaments, and adnexal bones of the spinal posterior column) designed to resist OVD were also not considered.…”

Section: Discussionmentioning

confidence: 99%

Quantitative assessment of zonal trabecular volumetric bone mineral density in middle-aged and elderly women using quantitative computed tomography

Yang¹,

Liu²,

Liu³

et al. 2023

Quant Imaging Med Surg

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Background: To explore the feasibility of the 9 zonal trabecular volumetric bone mineral density (trabecular vBMD) method in the first lumbar vertebral body (L1) and to assess the zonal trabecular vBMD distribution of L1 in women aged 50-80 years.Methods: A total of 578 women patients underwent a quantitative computed tomography (CT) scan of the L1 vertebra, and these patients were categorized into 3 age subgroups with 10-year intervals. L1 was segmented into 9 zones, based on which, L1 was then divided into 6 regions [i.e., vBMD-anterior (vBMD-A), vBMD-medial (vBMD-M), and vBMD-posterior (vBMD-P) from the ventral to the dorsal side, vBMDupper (vBMD-U), vBMD-medial (vBMD-M'), and vBMD-lower (vBMD-L) from the head to the foot].Independent samples t-test, intraclass correlation coefficient (ICC), and one-way analysis of variance (ANOVA) were used for statistical analyses.Results: There were no significant differences of the 9 zonal vBMDs measured by the 2 analysts (P≥0.638), and ICCs were all greater than or equal to 0.990. There was significant difference of global vBMD among the 3 age groups (P<0.001), and so as to the 9 zonal vBMDs among the 3 age groups (P<0.001). Age was negatively correlated with global vBMD and the 9 zonal vBMDs (P<0.001). There were significant differences among vBMD-A, vBMD-M, and vBMD-P (P<0.001), and vBMD-A and vBMD-M were both lower than vBMD-P. There were significant differences among vBMD-U, vBMD-M', and vBMD-L (P<0.001), and vBMD-U and vBMD-L were both lower than vBMD-M'. Conclusions:The 9 zonal trabecular vBMD method of L1 is stable and feasible, and the 9 zonal trabecular vBMD method may quantitatively explain osteoporotic vertebral deformity from the perspective of vBMD in middle-aged and elderly women.

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Section: Discussionmentioning

confidence: 99%

Quantitative assessment of zonal trabecular volumetric bone mineral density in middle-aged and elderly women using quantitative computed tomography

Yang¹,

Liu²,

Liu³

et al. 2023

Quant Imaging Med Surg

View full text Add to dashboard Cite

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Value of projectional imaging relative to cross-sectional imaging to assess catheter tip position in the superior vena cava: Evaluation of reader variability

Gullo,

Rotzinger,

Frossard

et al. 2024

British Journal of Radiology

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Objectives The assessment of correct positioning of central venous catheters (CVC) is of major concern to avoid complications. Vascular access associations have established the cavo-atrial junction (CAJ) as the most appropriate CVC tip location. Among the different chest X-ray (CXR) landmarks proposed for assessing tip position relative to the CAJ, only the pericardial reflection lies in the same plane as the vascular structures assessed. Although extensively used, CXR has been criticized for its difficulty in estimating catheter tip location. We aimed to evaluate the observer variability to determine tip positioning on CXR. CT imaging was used as a gold standard for tip identification. Material and Methods 107 CT scans of patients wearing port access catheter devices realized at the XXX University Hospital between January and December 2021 were retrospectively analyzed. Distance from tip to cavo-atrial junction (DCAJ) was measured on topogram projectional imaging (PJ) and axial cross-sectional imaging (CS) by 2 × 2 observers (within and between evaluations). Observational statistics were reported using a paired t-test, repeatability coefficients (RC), and the intraclass correlation coefficient (ICC), and they were displayed comprehensively using Bland-Altman plots. Results All ICC were >0.9, indicating excellent reliability. The mean difference between observers comparing CS and PJ was 0.13 ± 0.80 cm (P = 0.10) with outer 95% confidence limits of 1.92 cm and −2.17 cm and an RC of 1.79 cm. Conclusion CXR tip-position reading remains an accurate method for determining CVC localization. However, the assessment variability on CXR is plus or minus 2 cm and should be considered. Advances in knowledge Chest X-ray (CXR) for the assessment of tip position is subject to intra-individual and inter-individual variation. On CT, the variability is solely linked to determining the cavoatrial junction (CAJ) and represented about 1 cm. On CXR, there is a twofold challenge: the correct determination of the CAJ and the accurate identification of the catheter tip, leading to a greater variability of 2 cm. In clinical practice, while considering the 3 cm anatomical zone around the CAJ acceptable, operators should be aware of the 2 cm variability resulting from CXR assessment. To account for this variability and avoid the risk of positioning the tip beyond 3 cm from the CAJ (theoretically up to plus or minus 5 cm away from the CAJ), operators should reduce the CXR-based acceptable zone to 1 cm around the CAJ. This change may impact up to thirty percent of procedures.

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Can advanced edge enhancement software improve image quality to visualise tubes, catheters and wires in digital chest radiographs?

Cited by 2 publications

References 18 publications

Quantitative assessment of zonal trabecular volumetric bone mineral density in middle-aged and elderly women using quantitative computed tomography

Quantitative assessment of zonal trabecular volumetric bone mineral density in middle-aged and elderly women using quantitative computed tomography

Value of projectional imaging relative to cross-sectional imaging to assess catheter tip position in the superior vena cava: Evaluation of reader variability

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