Related Experiment Videos
Pulmonary sequestration: three dimensional dynamic contrast-enhanced MR angiography and MRI
1Department of Radiology, Xiehe Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022.
Journal of Tongji Medical University = Tong Ji Yi Ke Da Xue Xue Bao
|January 24, 2003
Summary
Three-dimensional contrast-enhanced MR angiography (CE MRA) effectively visualizes pulmonary sequestration's feeding and draining vessels. This MRI technique aids diagnosis and surgical planning, potentially replacing conventional angiography.
Area of Science:
- Radiology
- Medical Imaging
- Thoracic Surgery
Background:
- Pulmonary sequestration is a rare congenital lung malformation.
- Accurate pre-operative assessment of vascular supply and drainage is crucial for surgical planning.
Purpose of the Study:
- To evaluate the diagnostic utility of 3D contrast-enhanced MR angiography (CE MRA) and MRI for pulmonary sequestration.
- To assess the ability of CE MRA to delineate feeding and draining vessels.
Main Methods:
- Five patients with pulmonary sequestration underwent chest radiography, CT, and MRI.
- 3D fast imaging by steady state precession (FISP) with contrast medium was used for CE MRA.
- Maximum intensity projection (MIP) and multiplanar reconstruction (MPR) techniques were applied.
Main Results:
- Chest radiography showed opacity in the left lower lobe posterior basal segment.
- CT identified soft tissue mass and surrounding emphysema; supplying vessels seen in 2 cases.
- MRI showed hyperintense mass and supplying vessel origin in 3 cases.
- 3D CE MRA clearly depicted supplying and draining vessels, their courses, and branches.
Conclusions:
- 3D CE MRA, combined with plain MRI, accurately demonstrates the vascular supply and drainage of pulmonary sequestration.
- This non-invasive imaging approach aids in diagnosis and surgical planning.
- CE MRA may obviate the need for digital subtraction angiography (DSA).