Connecting Radiology | Enabling collaboration and professional development
New techniques in CT angiography.
Lell MM, Anders K, Uder M, Klotz E, Ditt H, Vega-Higuera F, Boskamp T, Bautz WA, Tomandl BF.
Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, USA. michael.lell@idr.imed.uni-erlangen.de
Radiographics. 2006 Oct;26 Suppl 1:S45-62.
Computed tomographic (CT) angiography has been improved significantly with the introduction of four- to 64-section spiral CT scanners, which offer rapid acquisition of isotropic data sets. A variety of techniques have been proposed for postprocessing of the resulting images. The most widely used techniques are multiplanar reformation (MPR), thin-slab maximum intensity projection, and volume rendering. Sophisticated segmentation algorithms, vessel analysis tools based on a centerline approach, and automatic lumen boundary definition are emerging techniques; bone removal with thresholding or subtraction algorithms has been introduced. These techniques increasingly provide a quality of vessel analysis comparable to that achieved with intraarterial three-dimensional rotational angiography. Neurovascular applications for these various image postprocessing methods include steno-occlusive disease, dural sinus thrombosis, vascular malformations, and cerebral aneurysms. However, one should keep in mind the potential pitfalls of these techniques and always double-check the final results with source or MPR imaging. .(c) RSNA, 2006.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, USA. michael.lell@idr.imed.uni-erlangen.de
Radiographics. 2006 Oct;26 Suppl 1:S45-62.
Computed tomographic (CT) angiography has been improved significantly with the introduction of four- to 64-section spiral CT scanners, which offer rapid acquisition of isotropic data sets. A variety of techniques have been proposed for postprocessing of the resulting images. The most widely used techniques are multiplanar reformation (MPR), thin-slab maximum intensity projection, and volume rendering. Sophisticated segmentation algorithms, vessel analysis tools based on a centerline approach, and automatic lumen boundary definition are emerging techniques; bone removal with thresholding or subtraction algorithms has been introduced. These techniques increasingly provide a quality of vessel analysis comparable to that achieved with intraarterial three-dimensional rotational angiography. Neurovascular applications for these various image postprocessing methods include steno-occlusive disease, dural sinus thrombosis, vascular malformations, and cerebral aneurysms. However, one should keep in mind the potential pitfalls of these techniques and always double-check the final results with source or MPR imaging. .(c) RSNA, 2006.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Views: 15
© 2024 Created by radRounds Radiology Network.
Powered by
