INTRODUCTION It has been shown that a proper comparison of prenatal ultrasound and magnetic resonance imaging (MRI) is possible only in the case of a short interval between tests. However, it is worth noting that the reference test is a postnatal examination. The aim of our study was to evaluate the effect of time between prenatal MRI (pMRI) and postnatal examinations on the consistency of diagnoses. MATERIAL AND METHODS The prospective observational study was carried out between 2014 and 2017 at the Department of Obstetrics and Perinatology of Krakow University Hospital. In total, 60 patients with fetuses suspected of central nervous system (CNS) defects were included in the study group. PMRI examinations were conducted in the third trimester of pregnancy. RESULTS The median gestational age of pMRI was 35 weeks and median of the time interval between carrying out pre- and postnatal test was 34.5 days. In the group of nonconcordant diagnoses, the interval was longer. The analysis did not show a statistically significant relationship between consistency of diagnoses and timing of pMRI. The median time of pregnancy at which pMRI was performed was similar in both groups. A prolongation of the interval between examinations reduced the probability of consistency of diagnoses. CONCLUSIONS The number of inaccurate results increased with the prolongation of the interval between pre- and postnatal tests. KEY MESSAGE Prolongation of the interval between pre- and postnatal increases number of inaccurate results.

中文翻译：

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胎儿中枢神经系统的磁共振成像：产前和产后诊断之间的时间和一致性

引言 已经表明，产前超声和磁共振成像 (MRI) 的适当比较只有在测试间隔较短的情况下才有可能。但值得注意的是，参考测试是产后检查。我们研究的目的是评估产前 MRI (pMRI) 和产后检查之间的时间对诊断一致性的影响。材料与方法 前瞻性观察研究于 2014 年至 2017 年在克拉科夫大学医院产科和围产科进行。共有 60 名胎儿疑似中枢神经系统 (CNS) 缺陷的患者被纳入研究组。PMRI 检查在妊娠晚期进行。结果 pMRI 的中位胎龄为 35 周，进行产前和产后检查的中位时间间隔为 34.5 天。在不一致的诊断组中，间隔更长。该分析未显示诊断的一致性和 pMRI 的时间之间存在统计学上的显着关系。两组进行 pMRI 的中位妊娠时间相似。延长检查之间的间隔降低了诊断一致性的可能性。结论 不准确结果的数量随着产前和产后检查间隔的延长而增加。关键信息 产前和产后间隔的延长会增加不准确结果的数量。间隔更长。该分析未显示诊断的一致性和 pMRI 的时间之间存在统计学上的显着关系。两组进行 pMRI 的中位妊娠时间相似。延长检查之间的间隔降低了诊断一致性的可能性。结论 不准确结果的数量随着产前和产后检查间隔的延长而增加。关键信息 产前和产后间隔的延长会增加不准确结果的数量。间隔更长。该分析未显示诊断的一致性和 pMRI 的时间之间存在统计学上的显着关系。两组进行 pMRI 的中位妊娠时间相似。延长检查之间的间隔降低了诊断一致性的可能性。结论 不准确结果的数量随着产前和产后检查间隔的延长而增加。关键信息 产前和产后间隔的延长会增加不准确结果的数量。延长检查之间的间隔降低了诊断一致性的可能性。结论 不准确结果的数量随着产前和产后检查间隔的延长而增加。关键信息 产前和产后间隔的延长会增加不准确结果的数量。延长检查之间的间隔降低了诊断一致性的可能性。结论 不准确结果的数量随着产前和产后检查间隔的延长而增加。关键信息 产前和产后间隔的延长会增加不准确结果的数量。