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Rubin DA. Dark Matter: Information from Scattered X-ray Photons May Contribute to Fracture Detection. Radiology 2024; 311:e240794. [PMID: 38805730 DOI: 10.1148/radiol.240794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Affiliation(s)
- David A Rubin
- From the Department of Radiology, NYU Grossman School of Medicine, 160 E 34th St, New York, NY 10016; All Pro Orthopedic Imaging Consultants, St Louis, Mo; and Radsource, Brentwood, Tenn
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Ledda RE, Silva M, McMichael N, Sartorio C, Branchi C, Milanese G, Nayak SM, Sverzellati N. The diagnostic value of grey-scale inversion technique in chest radiography. Radiol Med 2022; 127:294-304. [PMID: 35041136 PMCID: PMC8960630 DOI: 10.1007/s11547-022-01453-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/03/2022] [Indexed: 12/01/2022]
Abstract
Purpose We investigated whether the additional use of grey-scale inversion technique improves the interpretation of eight chest abnormalities, in terms of diagnostic performance and interobserver variability. Material and methods A total of 507 patients who underwent a chest computed tomography (CT) examination and a chest radiography (CXR) within 24 h were enrolled. CT was the standard of reference. Images were retrospectively reviewed for the presence of atelectasis, consolidation, interstitial abnormality, nodule, mass, pleural effusion, pneumothorax and rib fractures. Four CXR reading settings, involving 3 readers were organized: only standard; only inverted; standard followed by inverted; and inverted followed by standard. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy, assessed with the area under the curve (AUC), and their 95% confidence interval were calculated for each reader and setting. Interobserver agreement was tested by Cohen’s K test with quadratic weights (Kw) and its 95%CI.
Results CXR sensitivity % for any finding was 35.1 (95% CI: 33 to 37) for setting 1, 35.9 (95% CI: 33 to 37), for setting 2, 32.59 (95% CI: 30 to 34) for setting 3, and 35.56 (95% CI: 33 to 37) for setting 4; specificity % 93.78 (95% CI: 91 to 95), 93.92 (95% CI: 91 to 95), 94.43 (95% CI: 92 to 96), 93.86 (95% CI: 91 to 95); PPV % 56.22 (95% CI: 54.2 to 58.2), 56.49 (95% CI: 54.5 to 58.5), 57.15 (95% CI: 55 to 59), 56.75 (95% CI: 54 to 58); NPV % 85.66 (95% CI: 83 to 87), 85.74 (95% CI: 83 to 87), 85.29 (95% CI: 83 to 87), 85.73 (95% CI: 83 to 87); AUC values 0.64 (95% CI: 0.62 to 0.66), 0.65 (95% CI: 0.63 to 0.67), 0.64 (95% CI: 0.62 to 0.66), 0.65 (95% CI: 0.63 to 0.67); Kw values 0.42 (95% CI: 0.4 to 0.44), 0.40 (95% CI: 0.38 to 0.42), 0.42 (95% CI: 0.4 to 0.44), 0.41 (95% CI: 0.39 to 0.43) for settings 1, 2, 3 and 4, respectively.
Conclusions No significant advantages were observed in the use of grey-scale inversion technique neither over standard display mode nor in combination at the detection of eight chest abnormalities. Supplementary Information The online version contains supplementary material available at 10.1007/s11547-022-01453-0.
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Affiliation(s)
- Roberta Eufrasia Ledda
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy
| | - Mario Silva
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy
| | - Nicole McMichael
- Department of Radiology Diagnostics, Skåne University Hospital of Malmö, Malmö, Sweden
| | - Carlotta Sartorio
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy
| | - Cristina Branchi
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy
| | - Gianluca Milanese
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy.
| | - Sundeep M Nayak
- Department of Radiology, Kaiser Permanente Northern California, San Leandro, CA, USA
| | - Nicola Sverzellati
- Department of Medicine and Surgery, University of Parma, Scienze Radiologiche, University Hospital of Parma, Padiglione Barbieri, Via Gramsci 14, 43126, Parma, Italy
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Hatabu H, Madore B. Dark-Field Chest Radiography in the Detection of Emphysema. Radiology 2022; 303:128-129. [PMID: 35014909 DOI: 10.1148/radiol.212910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroto Hatabu
- From the Center for Pulmonary Functional Imaging (H.H.) and Department of Radiology (H.H., B.M.), Brigham and Women's Hospital and Harvard Medical School, 75 Francis St, Boston, MA 02115
| | - Bruno Madore
- From the Center for Pulmonary Functional Imaging (H.H.) and Department of Radiology (H.H., B.M.), Brigham and Women's Hospital and Harvard Medical School, 75 Francis St, Boston, MA 02115
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