Comparison between US and MRI in the prenatal assessment of lung malformations

Abstract

In our series, no clear superiority of MRI over US in the prenatal evaluation of CLA was demonstrated, but US better demonstrated systemic feeding vessels and MRI cysts and normal lung adjacent to the lesion.

Unusual signal intensity of congenital pulmonary airway malformation on fetal magnetic resonance imaging

“…In addition, the high density of other cells in the adenomatoid malformation component, with or without regression, might have caused low signal intensity. Although Beydon et al [10] recently concluded that there is no clear superiority of MRI over US in the prenatal evaluation of congenital lung abnormalities, MRI probably reflects the pathological features, as in our case.…”

Going With the Flow: An Aid in Detecting and Differentiating Bronchopulmonary Sequestrations and Hybrid Lesions

“…Ultrasound performed statistically better than MRI in identifying systemic feeding arteries in bronchopulmonary sequestrations and hybrid lesions; however, systemic feeding arteries could be identified by MRI in slightly more than two‐thirds of cases. Difficulty identifying systemic feeding arteries by MRI has previously been reported, and the improved ability of US to identify systemic feeding arteries is most likely due to the modality's greater spatial resolution. The extent to which even mild fetal motion degrades ultrafast MRI is also suspected to contribute to the decreased ability in MRI detection of systemic feeding arteries.…”

“…The ability to prenatally identify systemic feeding arteries in cases of bronchopulmonary sequestrations is established 2,4,5 ; however, we demonstrate the relatively high degree to which systemic feeding arteries can be identified in cases of bronchopulmonary sequestrations and hybrid lesions. It has been suggested that prenatal imaging cannot typically distinguish between intralobar and extralobar sequestrations, 10,11 and only 2 previous reports described the identification of draining veins in bronchopulmonary sequestrations. 7,8 Our data, however, demonstrate that both systemic feeding arteries and draining veins can be routinely identified.…”

Significance of lung anomalies in fetuses affected by tetralogy of Fallot with absent pulmonary valve syndrome

“…20 On the other hand, it is also recognised that lung segments or lobes with airtrapping appear overinflated and hyperechogenic on prenatal ultrasound, as documented in congenital lobar emphysema, and congenital high airway obstruction syndromefor instance, the radiological presentation of congenital lobar emphysema has been well depicted by several authors both prenatally and postnatally. [21][22][23] The affected zones are hyperechogenic on the secondtrimester fetal ultrasound and then hyperlucent on postnatal CT scan. By analogy, it seems reasonable to think that lung regions of air trapping visible after birth could already be identified during fetal life.…”