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Published on: February 18, 2012
Brain lesions in preterm infants: initial diagnosis and follow-up
1Department of Radiology, Medical School, University of Ioannina, 45110 Ioannina, Greece. margyrop@cc.uoi.gr
Insights
Imaging techniques like cranial ultrasound and MRI help diagnose and monitor brain development issues in premature infants, improving prognosis for various disabilities.
Area of Science:
- Neonatal neurology
- Pediatric neuroimaging
Background:
- Premature birth survivors often experience diverse neurological disabilities, impacting motor, sensory, and cognitive functions.
- Understanding the underlying brain abnormalities is crucial for predicting outcomes.
Purpose of the Study:
- To review the application of neuroimaging techniques in evaluating brain development and pathology in preterm infants.
- To highlight the diagnostic and prognostic value of different imaging modalities.
Main Methods:
- Cranial ultrasonography (US) with color Doppler for initial diagnosis of common neonatal brain injuries.
- Magnetic Resonance Imaging (MRI) for assessing brain maturation and detailed pathological evaluation.
- Advanced MRI techniques like diffusion tensor imaging (DTI) and magnetization transfer (MT) for in-depth analysis.
Main Results:
- Cranial US is effective for diagnosing intraventricular hemorrhage, parenchymal infarcts, and periventricular leukomalacia.
- MRI provides essential follow-up data on brain maturation and structural abnormalities.
- Advanced MRI techniques offer detailed anatomical and functional insights for prognostication.
Conclusions:
- Neuroimaging plays a vital role in the comprehensive assessment of preterm infants' brain health.
- A combination of imaging methods aids in early diagnosis, monitoring, and predicting the long-term neurological outcomes.
Abstract:
Children surviving premature birth present with a wide spectrum of motor, sensory and cognitive disabilities, ranging from slight motor deficits, school difficulties and behavioural problems to cerebral palsy and mental retardation. The anatomic and functional substrate of these problems can be investigated using a variety of imaging techniques. Cranial US coupled with colour Doppler is a well-established method for the initial diagnosis of intraventricular haemorrhage, parenchymal haemorrhagic infarct and periventricular leukomalacia. MRI is useful for the follow-up study of brain maturation. Conventional T1- and T2-weighted sequences, magnetization transfer and diffusion tensor imaging coupled with sophisticated tools of tissue segmentation and analysis at a voxel level offer substantial anatomic and functional information on pathological conditions that define the prognosis of preterm infants.
