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Diagnostic accuracy of classical radiological measurements for basilar invagination of type B at MRI.
Eur Spine J. 2019 02; 28(2):345-352.ES

Abstract

OBJECTIVE

To evaluate the diagnostic accuracy of classical measurements for basilar invagination (BI) of type B at MRI.

METHODS

This study used head MRIs from 31 participants with BI type B and 96 controls. The radiological criterion for BI was the odontoid process invagination using the obex as reference. It based on the independent prospective reading of two neuroradiologists. Concordance between the two neuroradiologists was analysed through the KAPPA index, and the discrepancy was resolved in a consensus meeting. A third examiner measured in two occasions (double blind) the distance of the odontoid apex to Chamberlain's line (DOCL) and McGregor's line (DOMG), clivus canal angle (CCA), Welcker's basal angle (WBA), and Boogaard's angle (BOA). Intra-examiner reproducibility of the measurements was evaluated with the intraclass correlation coefficient and the diagnostic accuracy by ROC curve. All analyses were at 95% confidence interval.

RESULTS

Agreement between the two neuroradiologists was statistically relevant (KAPPA = .91; P = .0001). The intra-examiner reproducibilities were .98 (DOCL), .97 (DOMG), .96 (CCA), .94 (WBA), and .95 (BOA) (P < .05). The areas under the ROC curve were .963 (DOCL), .940 (DOMG), .880 (CCA), .867 (WBA), and .951 (BOA) (P < .05). The cut-off criteria were ≥ 7 mm (DOCL), ≥ 8 mm (DOMG), ≤ 145° (CCA), ≥ 142° (WBA), and ≥ 136° (BOA). The diagnostic accuracies were .904 (DOCL), .870 (DOMG), .844 (CCA), .810 (WBA), and .899 (BOA).

CONCLUSION

The DOCL and BOA presented the highest diagnostic accuracy for BI type B. These slides can be retrieved under Electronic Supplementary Material.

Authors+Show Affiliations

Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, University City, Recife, PE, CEP: 50670-901, Brazil. josejailson64@gmail.com.Department of Morphology, Federal University of Paraíba, João Pessoa, Brazil.Diagnostic imaging, Internal Medicine, Federal University of Paraíba, João Pessoa, Brazil.Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, University City, Recife, PE, CEP: 50670-901, Brazil. Neurology and Neurosurgery Unit, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil. Internal Medicine Department, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil.Diagnostic imaging, Internal Medicine, Federal University of Paraíba, João Pessoa, Brazil.Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, University City, Recife, PE, CEP: 50670-901, Brazil. Internal Medicine Department, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil. Telehealth Unit, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30498960

Citation

Nascimento, José J C., et al. "Diagnostic Accuracy of Classical Radiological Measurements for Basilar Invagination of Type B at MRI." European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, vol. 28, no. 2, 2019, pp. 345-352.
Nascimento JJC, Neto EJS, Mello-Junior CF, et al. Diagnostic accuracy of classical radiological measurements for basilar invagination of type B at MRI. Eur Spine J. 2019;28(2):345-352.
Nascimento, J. J. C., Neto, E. J. S., Mello-Junior, C. F., Valença, M. M., Araújo-Neto, S. A., & Diniz, P. R. B. (2019). Diagnostic accuracy of classical radiological measurements for basilar invagination of type B at MRI. European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 28(2), 345-352. https://doi.org/10.1007/s00586-018-5841-4
Nascimento JJC, et al. Diagnostic Accuracy of Classical Radiological Measurements for Basilar Invagination of Type B at MRI. Eur Spine J. 2019;28(2):345-352. PubMed PMID: 30498960.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diagnostic accuracy of classical radiological measurements for basilar invagination of type B at MRI. AU - Nascimento,José J C, AU - Neto,Eulâmpio J S, AU - Mello-Junior,Carlos F, AU - Valença,Marcelo M, AU - Araújo-Neto,Severino A, AU - Diniz,Paula R B, Y1 - 2018/11/29/ PY - 2018/08/17/received PY - 2018/11/25/accepted PY - 2018/12/1/pubmed PY - 2020/7/4/medline PY - 2018/12/1/entrez KW - Basilar invagination KW - Boogaard’s angle KW - Chamberlain line KW - Diagnostic accuracy KW - Roc curve SP - 345 EP - 352 JF - European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society JO - Eur Spine J VL - 28 IS - 2 N2 - OBJECTIVE: To evaluate the diagnostic accuracy of classical measurements for basilar invagination (BI) of type B at MRI. METHODS: This study used head MRIs from 31 participants with BI type B and 96 controls. The radiological criterion for BI was the odontoid process invagination using the obex as reference. It based on the independent prospective reading of two neuroradiologists. Concordance between the two neuroradiologists was analysed through the KAPPA index, and the discrepancy was resolved in a consensus meeting. A third examiner measured in two occasions (double blind) the distance of the odontoid apex to Chamberlain's line (DOCL) and McGregor's line (DOMG), clivus canal angle (CCA), Welcker's basal angle (WBA), and Boogaard's angle (BOA). Intra-examiner reproducibility of the measurements was evaluated with the intraclass correlation coefficient and the diagnostic accuracy by ROC curve. All analyses were at 95% confidence interval. RESULTS: Agreement between the two neuroradiologists was statistically relevant (KAPPA = .91; P = .0001). The intra-examiner reproducibilities were .98 (DOCL), .97 (DOMG), .96 (CCA), .94 (WBA), and .95 (BOA) (P < .05). The areas under the ROC curve were .963 (DOCL), .940 (DOMG), .880 (CCA), .867 (WBA), and .951 (BOA) (P < .05). The cut-off criteria were ≥ 7 mm (DOCL), ≥ 8 mm (DOMG), ≤ 145° (CCA), ≥ 142° (WBA), and ≥ 136° (BOA). The diagnostic accuracies were .904 (DOCL), .870 (DOMG), .844 (CCA), .810 (WBA), and .899 (BOA). CONCLUSION: The DOCL and BOA presented the highest diagnostic accuracy for BI type B. These slides can be retrieved under Electronic Supplementary Material. SN - 1432-0932 UR - https://www.unboundmedicine.com/medline/citation/30498960/Diagnostic_accuracy_of_classical_radiological_measurements_for_basilar_invagination_of_type_B_at_MRI_ L2 - https://doi.org/10.1007/s00586-018-5841-4 DB - PRIME DP - Unbound Medicine ER -