Related Experiment Videos
Abnormal venous drainage in periventricular leukomalacia
1Department of Radiology, Ege University Hospital, Bornova, Izmir, Turkey.
Abstract:
Age-matched six control subjects and 14 selected paediatric patients with periventricular leukomalacia were prospectively studied by MR imaging, and MR angiography. MR angiograms were acquired utilizing either the three-dimensional phase-contrast (3D-PC) or the two-dimensional time-of-flight (2D-TOF) techniques, or both, in an axial slab centred to the centrum semiovale. Abnormal draining veins (slightly enlarged and long vessels with abnormal courses) were found in eight of 14 patients (57%). In five of these eight patients (62.5%) abnormal vessels were identified on conventional MR imaging (spin-echo, T2-weighted and flow sensitive images), while the 3D-PC or 2D-TOF angiograms demonstrated the abnormal vessels in all the patients (100%). Usually there was single abnormal vessel at the region of interest. These vessels should not be misinterpreted as arteriovenous malformations or venous malformations.
Insights
MR angiography identified abnormal draining veins in pediatric periventricular leukomalacia patients. These abnormal vessels were better visualized with MR angiography than conventional MRI, aiding accurate diagnosis.
Area of Science:
- Neuroradiology
- Pediatric Neurology
- Medical Imaging
Background:
- Periventricular leukomalacia (PVL) is a common white matter injury in premature infants.
- Abnormal venous drainage patterns can be associated with neurological conditions in children.
- Accurate identification of vascular abnormalities is crucial for diagnosis and management.
Purpose of the Study:
- To evaluate the utility of MR angiography in detecting abnormal draining veins in pediatric patients with periventricular leukomalacia.
- To compare the sensitivity of MR angiography techniques (3D-PC and 2D-TOF) versus conventional MRI for visualizing these abnormal vessels.
Main Methods:
- Prospective study of 14 pediatric patients with PVL and 6 age-matched controls.
- MR imaging and MR angiography were performed.
- MR angiograms acquired using 3D-phase-contrast (3D-PC) or 2D-time-of-flight (2D-TOF) techniques.
Main Results:
- Abnormal draining veins were identified in 57% of PVL patients.
- Conventional MRI detected these abnormal vessels in 62.5% of affected patients.
- MR angiography (3D-PC or 2D-TOF) visualized abnormal vessels in 100% of patients with these findings.
Conclusions:
- MR angiography is highly effective in demonstrating abnormal draining veins in pediatric PVL.
- These abnormal venous structures can be distinguished from arteriovenous or venous malformations.
- Enhanced visualization aids in accurate diagnosis and avoids misinterpretation of findings.