Reduced field-of-view diffusion-weighted imaging (DWI) in patients with gastric cancer: Comparison with conventional DWI techniques at 3.0T: A preliminary study
| Autor: | Yuan-Fei Lu, Jian-Zhong Sun, Ri-Sheng Yu, Ying Zhou, Jie-Yu Chen, Jin-Song Cai, Haiyan Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Wilcoxon signed-rank test Image quality retrospective study Lesion 03 medical and health sciences 0302 clinical medicine Cohen's kappa Quality Improvement Study medicine Effective diffusion coefficient Humans magnetic resonance imaging 030212 general & internal medicine cardiovascular diseases Aged Retrospective Studies stomach neoplasms medicine.diagnostic_test business.industry Cancer Magnetic resonance imaging General Medicine Middle Aged medicine.disease Diffusion Magnetic Resonance Imaging 030220 oncology & carcinogenesis Female medicine.symptom Nuclear medicine business Diffusion MRI Research Article |
| Zdroj: | Medicine |
| ISSN: | 1536-5964 |
| Popis: | To evaluate the qualitative image quality and quantitative apparent diffusion coefficient (ADC) value of reduced field-of view (rFOV) and full field-of-view (fFOV) diffusion-weighted imaging (DWI) sequences at 3.0 T in patients with gastric cancer. Fifty-three patients (37 males, 16 females; mean age, 63.3 ± 10.3 years) with 60 lesions with gastric cancer who underwent magnetic resonance (MR) scans, including both rFOV-DWI and fFOV-DWI, were retrospectively analyzed. Two observers subjectively evaluated image quality for both the fFOV-DWI and rFOV-DWI sequences regarding the anatomic details, distortion, lesion conspicuity, artifacts, and overall image quality. The mean ADC values of gastric cancer were calculated. The Wilcoxon test and paired samples t test were used. Interobserver agreement was assessed using kappa statistics. The mean scores based on the 2 observers demonstrated significant differences in image quality in terms of anatomic details, distortion, lesion conspicuity, artifacts and overall image quality at both b values between rFOV-DWI and fFOV-DWI (P |
| Databáze: | OpenAIRE |
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