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Hydrocephalus is difficult to detect clinically before delivery, although enlarged ventricles can be spotted on ultrasonography as early as 18-20 weeks gestation. [7] Since infants' skulls are not fully fused together at the cranial sutures yet, they have soft spots on their skulls known as open fontanelles . [ 8 ]
Ventriculomegaly is a brain condition that mainly occurs in the fetus when the lateral ventricles become dilated. The most common definition uses a width of the atrium of the lateral ventricle of greater than 10 mm. [1] This occurs in around 1% of pregnancies. [2]
Images showing an enlarged third ventricle along with a normally sized fourth ventricle (in a lateral view) is generally considered to be an indication of aqueductal stenosis, but this is still only presumption. [2] [3] CT scans are typically used after a shunt treatment in order to analyze ventricle size and determine if the device is working ...
Normal heart anatomy compared to d-TGA Echocardiography of a complex transposition with a ventricular septal defect and pulmonary stenosis. Abbreviations: LV and RV=left and right ventricle, PT=pulmonary trunk, VSD=ventricular septal defect, PS=pulmonary stenosis. Echocardiogram in transposition of the great arteries.
The preliminary diagnosis of PVL is often made using imaging technologies. In most hospitals, premature infants are examined with ultrasound soon after birth to check for brain damage. Severe white matter injury can be seen with a head ultrasound; however, the low sensitivity of this technology allows for some white matter damage to be missed.
It shows enhancement of meninges at the tentorium and in the parietal region, with evidence of dilated ventricles. Fluid-attenuated inversion recovery ( FLAIR ) is a magnetic resonance imaging sequence with an inversion recovery set to null fluids.
As the blood flows through the left atrium, it will move through the mitral valve into the left ventricle and will be pumped through the aorta into the body. The shunting of oxygenated blood from right to left atrium will supply blood high in oxygen and nutrient content to the upper extremities, including the critically important brain.