Diagnostic value of small field of view DWI-MRI in assessing benign and malignant pulmonary nodules
10.3969/j.issn.1672-8270.2025.07.006
- VernacularTitle:小视野弥散加权MRI在肺结节良恶性评估中的诊断价值研究
- Author:
Yanlei XU
1
;
Jie ZHOU
1
;
Hai XU
1
;
Aiping CHEN
1
;
Ruilei YU
1
Author Information
1. 南京医科大学第一附属医院放射科 南京 210029
- Publication Type:Journal Article
- Keywords:
Pulmonary nodule;
Diffusion weighted imaging(DWI);
Magnetic resonance imaging(MRI);
Small field of view
- From:
China Medical Equipment
2025;22(7):30-34
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the diagnostic value of small field of view ZooMit diffusion weighted imaging(Z-DWI)sequence of magnetic resonance imaging(MRI)in assessing benign and malignant pulmonary nodules.Methods:A total of 60 patients with pulmonary nodules who underwent MR examination at the First Affiliated Hospital with Nanjing Medical University from January 2021 to December 2022 were prospectively collected.All patients underwent conventional DWI(C-DWI)and Z-DWI.The signal to noise ratio(SNR),contrast to noise ratio(CNR),and apparent diffusion coefficient(ADC)of them were measured and analyzed.Two physicians with more than 8 years of experience in diagnosing pulmonary nodules implemented subjective scores for the image quality.Then,the ADC values of benign and malignant nodules between two kinds of images were compared.Results:The scores of Z-DWI images quality in terms of artifact,display of anatomical detail,lesion clarity,and image distortion were respectively(3.53±0.52),(3.27±0.70),(2.87±0.64),and(2.93±0.71),which were all higher than those of C-DWI images,and the differences were statistically significant(t=-4.68,-3.56,-2.44,-2.87,P<0.05).The SNR and CNR values of Z-DWI sequence were respectively(123.4±39.9)and(124.9±24.7),all of which were higher than those of C-DWI sequence,and the differences were statistically significant(t=-8.63,-7.09,P<0.05).The ADC values of C-DWI images of benign and malignant nodules were respectively(1.53±0.27)and(1.09±0.22),and the difference of that between them were statistically significant(t=9.88,P<0.001).The ADC values of Z-DWI images of benign and malignant nodules were respectively(1.39±0.18)and(0.99±0.19),and the difference of that between them was statistically significant(t=7.30,P<0.001).The ADC values of benign and malignant nodules of C-DWI images were higher than those of Z-DWI images,and the differences were statistically significant(t=3.40,2.13,P<0.05).Conclusion:Z-DWI can improve the image quality of benign and malignant pulmonary nodules,which has important clinically diagnostic significance in assessing the benign and malignant natures of pulmonary nodules.
