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Date Published: 16/02/2023
Online Published: 16/02/2023
Abstract Views: 98
Views PDF: 34
DOI: https://doi.org/10.55046/vjrnm.48.757.2022
Issue
No. 02 (2022): English
Section
Scientific research
How to Cite
Mai Thị, N., Dam, . T. T., Nguyen , T. T. T., Nguyen , T. K., Nguyen , T. T., Nguyen , P. A., & Vu , D. L. (2023). THE LUNG POINT: AN ULTRASOUND FINDING IN THE DIAGNOSIS AND SEMI-QUANTIFICATION OF PNEUMOTHORAX AFTER CT-GUIDED TRANSTHORACIC BIOPSY. Vietnamese Journal of Radiology and Nuclear Medicine, 02. https://doi.org/10.55046/vjrnm.48.757.2022

THE LUNG POINT: AN ULTRASOUND FINDING IN THE DIAGNOSIS AND SEMI-QUANTIFICATION OF PNEUMOTHORAX AFTER CT-GUIDED TRANSTHORACIC BIOPSY

Ngọc Mai Thị1,, Dam Thuy Trang2, Nguyen Thi Thu Thao2, Nguyen Thi Khoi3, Nguyen Thanh Thuy4, Nguyen Phuong Anh4, Vu Dang Luu4
1 Bệnh Viện Bạch Mai
2 2Radiology Center, Bach Mai Hospital
3 Radiology Center, Bach Mai Hospital
4 Radiology Center - Bach Mai Hospital

Main Article Content

Abstract

This study focused on evaluating the diagnostic performance of the lung point (LP)- a lung ultrasound (LUS) sign in detecting and semi-quantifying pneumothorax (PTX), using computed tomography (CT) as the reference standard. The study included 150 patients who underwent CT-guided transthoracic biopsy (TTB) for lung lesions. Two radiologists blinded to the participant’s prior information performed LUS post-biopsy. The results showed that PTX was present on CT in 49/150 (32.3%) cases. The LP was positive in 36/150 (24%) patients, with a substantial agreement between the two radiologists (Cohen κ statistics = 0.8). The sensitivity and specificity of the LP were 73.5% (95%CI 66.5% to 80.5) and 100% (95%CI 97.6% to 100%), respectively. Moreover, the positive and negative predictive values were 100% (95%CI 97.6% to 100%) and 67.3% (95%CI 59.8% to 78.4%), respectively. In the semi-quantification of PTX, the location of LP was described in 36/49 (73.5%) patients. The sensitivity and specificity of this sign were 87.5% (95%CI 82.2% to 92.8%) and 96.4% (95%CI 92.4% to 98.9%), respectively. The positive and negative predictive values were 87.5% (95%CI 82.2% to 92.8%) and 96.4% (95%CI 92.4% to 98.9%), respectively. In conclusion, LP is a susceptible and specific LUS sign for diagnosing and semi-quantifying PTX.

Article Details

Keywords

lung point, lung ultrasound, pneumothorax, diagnostic performance, semi-quantification

References

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