Applications of FIESTA and SSFSE sequences in magnetic resonance imaging of placenta increta(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2019年第12期
- Page:
- 1444-1448
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Applications of FIESTA and SSFSE sequences in magnetic resonance imaging of placenta increta
- Author(s):
- YANG Jingquan; GAO Mingyong; ZHOU Xinhan; HE Xiaohong; MA Jincheng
- MR Room, Department of Medical Imaging, the First People’s Hospital of Foshan City, Foshan 528000, China
- Keywords:
- Keywords: fast imaging employing steady-state acquisition; single-shot fast spin-echo; placenta increta; magnetic resonance
- PACS:
- R816.91
- DOI:
- DOI:10.3969/j.issn.1005-202X.2019.12.015
- Abstract:
- Abstract: Objective To compare the application value of fast imaging employing steady-state acquisition (FIESTA) and single-shot fast spin-echo (SSFSE) sequences of magnetic resonance imaging in placenta increta for providing a reference for the selection of prenatal diagnostic sequence of placenta increta. Methods Thirty-five patients with placenta increta who were admitted to the First People’s Hospital of Foshan City from January to December 2018 were selected as subjects. The patients were examined for placenta increta with FIESTA and SSFSE sequences. The image quality, direct and indirect signs and the diagnostic value were compared between two kinds of sequences. Results The contour and boundary between the placenta and the uterus as well as image signal-to-noise ratio obtained by FIESTA sequence were better than those obtained by SSFSE sequence (P<0.05). The detection rates of the direct signs of the implanted, adhesive and penetrating types by FIESTA sequence were higher than those obtained by SSFSE sequence, but only the difference in the detection rate of implanted type was statistically significant (P<0.05). However, FIESTA sequence was inferior to SSFSE sequence in the detections of indirect signs inside the placenta such as low signals, uneven signals of the parenchyma and the thickening and increased vascular shadows, but the statistical difference was only found in the detection rate of low signals inside the placenta (P<0.05). With the results of surgical pathological examination as the golden standard, the sensitivities, specificities and accuracy rates of FIESTA sequence combined with SSFSE sequence were higher than single sequence for the detection of implanted, adhesive and penetrating types of placenta increta. Conclusion The placenta and uterus in patients with placenta increta can be clearly displayed by FIESTA sequence, and the image quality is excellent. FIESTA and SSFSE sequences have their own advantages in the detection of direct and indirect signs. The combination of two sequences can effectively improve the diagnostic value for placenta increta.
Last Update: 2019-12-26