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• Clinical Article •
The preliminary exploration of prenatal placenta increta using unenhanced MR imaging under multi-positions and mult-sequences
WANG Qiang  WANG Ya  HONG Xiao-chun  ZHANG Jian-fei  GONG Miao-miao  XIN Xiao-yan 

DOI:10.3969/j.issn.1674-8034.2015.05.011.


[Abstract] Objective: To summarize the effective scanning sequences of non enhanced MRI in the diagnosis of placenta accreta by performing multi-positional and multi-sequential non-enhanced MR scanning over 69 cases of prenatal placenta.Materials and Methods: A total of 69 suspicious cases with placenta previa by ultrasound and clinical symptoms were examined by 3.0 T magnetic resonance under 2 positions and 5 sequences. The image quality of different filling bladder state were compared and the imaging findings of placenta increta were analyzed. Preoperative imaging were compared with intraoperative observation and postoperative pathologic results. SPSS16.0 statistical software was used for statistical analysis.Result: The image quality of 69 cases could meet the demand of diagnosis. The preoperative diagnosis was consistent with pathology and postoperative diagnosis. The quality of imaging were improved by two positions and patient discomfort was reduced, the artifact and volume effect was reduced by bladder different filling state. Compared with postoperative pathologic results, the diagnosis sensitivity, specificity and accuracy of placenta increta under multi-positions and multi-sequences was respectively 96.7% (58/60), 77.8% (7/9) and 95.7% (66/69). The diagnosis sensitivity of penetrative placenta under combination of supine position and lateral position was 66.7% and was higher than that of the single supine position (33.7%).Conclusions: Different bladder filling state with position change can effectively reduce the artifact and volume effect and improve the imaging quality. The unenhanced MR scanning imaging under 2 positions and 5 sequences can provide abundant diagnostic information and treatment information for the placenta previa and provide a significant role in the clinical diagnosis and treatment.
[Keywords] Magnetic resonance imaging；Placenta previa；Placenta accreta

WANG Qiang Department of Radiology, Maternal and Child Health Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China

WANG Ya Department of Radiology, Maternal and Child Health Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China

HONG Xiao-chun Department of Radiology, Maternal and Child Health Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China

ZHANG Jian-fei Department of Radiology, Maternal and Child Health Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China

GONG Miao-miao Department of Radiology, Maternal and Child Health Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China

XIN Xiao-yan* Department of Radiology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China

*Correspondence to: Xin XY, E-mail: xinxy98@163.com

Conflicts of interest   None.

Received  2015-02-10
Accepted  2015-04-06
DOI: 10.3969/j.issn.1674-8034.2015.05.011
DOI:10.3969/j.issn.1674-8034.2015.05.011.

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