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目的观察不同核磁共振成像方式对早产儿颅脑损伤的诊断结果,探讨有效诊断早产儿颅脑损伤的核磁共振成像方式。方法对453例早产儿进行核磁共振成像检查,观察不同成像方式对颅脑损伤的检出结果。结果 453例早产儿核磁共振成像检查诊断为颅脑损伤者共287例,占63.35%,其中出血性颅脑损伤132例,缺血性颅脑损伤108例,脑出血合并缺血47例;共检出病灶596个,其中缺血性病灶305个、出血性病灶291个。T1WI、T2WI、DWI检出的早产儿缺血性颅脑损伤病灶数分别为168、128、305个,3种方式的检出率比较有统计学差异(χ2=6.002,P<0.05)。T1WI、T2WI、DWI、SWI检出的早产儿颅脑出血性病灶数分别为139、101、216、291个,四种方式的检出率比较有统计学差异(χ2=22.981,P<0.01)。结论不同的核磁共振成像方式对早产儿颅脑损伤病灶的检出情况有差异,其中DWI对缺血性颅脑损伤的检出率最高,而SWI对出血性颅脑损伤的检出率最高,DWI和SWI的联合应用可以提高早产儿颅脑损伤的检出率。
Objective To observe the diagnostic value of different magnetic resonance imaging (MRI) modalities for craniocerebral injury in preterm infants and to explore the methods of magnetic resonance imaging for the effective diagnosis of craniocerebral injury in preterm infants. Methods A total of 453 preterm infants were examined by magnetic resonance imaging (MRI). The detection results of different imaging modalities on craniocerebral injury were observed. Results A total of 287 cases of craniocerebral injury were diagnosed in 453 preterm infants with 63.35% of them, including 132 cases of hemorrhagic craniocerebral injury, 108 cases of ischemic craniocerebral injury and 47 cases of cerebral hemorrhage with ischemia 596 lesions were detected, including 305 ischemic lesions and 291 hemorrhagic lesions. The number of ischemic craniocerebral lesions in preterm infants detected by T1WI, T2WI and DWI was 168, 128 and 305, respectively. The detection rates of the three methods were statistically different (χ2 = 6.002, P <0.05). The detection rates of cerebral hemorrhagic lesions in preterm infants with T1WI, T2WI, DWI and SWI were 139,101,216,291, respectively. The detection rates of the four methods were statistically different (χ2 = 22.981, P <0.01) . Conclusions Different MRI methods have different detection of brain lesions in preterm infants. DWI has the highest detection rate of ischemic brain injury and SWI has the highest detection rate of hemorrhagic head injury, The combination of DWI and SWI can improve the detection rate of traumatic brain injury in premature infants.