Related Experiment Videos
MR angiography in pediatric neurological disorders
B C Lee1, T S Park, B A Kaufman
1Department of Radiology, St. Louis Children's Hospital, Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis 63110, USA.
Pediatric Radiology
|January 1, 1995
Summary
MR angiography (MRA) and MR venography (MRV) effectively evaluate pediatric neurological vascular disorders, showing intracranial vessels better than MRI. MRV is preferred for venous thrombosis, while MRA aids in detecting arterial narrowing.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Pediatric neurological disorders often involve complex vascular abnormalities.
- Accurate imaging of intracranial vasculature is crucial for diagnosis and management.
- Time-of-flight MR angiography (MRA) and MR venography (MRV) are advanced non-invasive imaging techniques.
Purpose of the Study:
- To evaluate the utility of 3D and 2D time-of-flight MR angiography (MRA) and MR venography (MRV) in diagnosing pediatric neurological disorders.
- To compare MRA and MRV findings with conventional cerebral angiography and standard MRI.
- To assess the subjective value of MRA in surgical planning for pediatric vascular lesions.
Main Methods:
- Utilized 3D and 2D time-of-flight MR angiography (MRA) and MR venography (MRV) techniques.
- Compared MRA and MRV results with conventional cerebral angiography in 30 cases.
- Subjectively evaluated the role of MRA in surgical planning.
- Compared MRA/MRV with standard Magnetic Resonance Imaging (MRI).
Main Results:
- Intracranial vessels were consistently better visualized with MRA than with standard MRI.
- MRA and MRV proved highly useful for vascular distortions in congenital brain malformations and intracranial tumors.
- MRA detected arterial narrowing but tended to overestimate stenosis compared to conventional angiography.
- MRV was the preferred method for evaluating dural sinus thrombosis, cerebral venous thrombosis, and compression.
- MRA demonstrated limited accuracy in assessing tumor vascularity, small artery lesions, arteritis, and preoperative planning for vascular malformations/aneurysms.
Conclusions:
- MR angiography (MRA) and MR venography (MRV) are valuable tools for pediatric neurological vascular assessment, offering superior intracranial vessel visualization over MRI.
- MRV is the technique of choice for evaluating venous pathologies, while MRA aids in identifying arterial narrowing.
- MRA has limitations in precise stenosis quantification, tumor vascularity assessment, and surgical planning for specific vascular lesions.