Bài báo khoa học Tập 67 Số 5 25/05/2026

VAI TRÒ CỦA CỘNG HƯỞNG TỪ CHUỖI XUNG T1-WEIGHTED DUAL ECHO TRONG ĐÁNH GIÁ GAN NHIỄM MỠ Ở BỆNH NHÂN ĐƯỢC CHẨN ĐOÁN BẰNG SIÊU ÂM

Hà Thùy Dung1,2, Nguyễn Phương Lan1,2, Hoàng Đình Âu1,2,3,4,5,6
1 National Geriatric Hospital
2 Bệnh viện Lão Khoa Trung ương
3 Hanoi Medical University Hospital
4 Hanoi Medical University
5 Bệnh viện Đại học Y Hà Nội
6 Trường Đại học Y Hà Nội
DOI: 10.52163/yhc.v67i5.5164
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Từ khóa
Hepatic steatosis, magnetic resonance imaging, Dual Echo, HFF, ultrasound.
Tóm tắt

Objective: To evaluate the role of T1-weighted dual-echo magnetic resonance imaging (MRI) in the assessment of hepatic steatosis in patients previously diagnosed by ultrasound.

Subjects and methods: A retrospective cross-sectional study was conducted on patients diagnosed with hepatic steatosis on ultrasound who subsequently underwent abdominal MRI with dual-echo sequences (In-phase and Opposed-phase) at the National Geriatric Hospital from May 2025 to February 2026. Hepatic fat fraction (HFF) was calculated based on signal intensity differences between in-phase and opposed-phase images. A threshold of HFF ≥ 5% was used to define hepatic steatosis.

Results: A total of 17 patients were included, with a mean age of 61.6 ± 10.8 years. Among patients diagnosed with hepatic steatosis on ultrasound, 58.8% met the MRI threshold for hepatic steatosis, while 41.2% did not. The mean HFF of the entire cohort was 8.79%. HFF values were relatively evenly distributed across liver segments, with no statistically significant differences (p > 0.05).

Conclusion: Dual-echo MRI may provide additional quantitative information on hepatic fat content in patients diagnosed with hepatic steatosis by ultrasound. However, the observed discrepancy between the two modalities suggests that results should be interpreted with caution. Further studies with larger sample sizes and reference standards are required to establish the diagnostic value of this technique.

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