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3D-CT Arteriography and 3D-CT Venography: The Separate Demonstration of Arterial-Phase and Venous-Phase on 3D-CT Angiography in a Single Procedure

Masato Matsumotoa, Namio Kodamaa, Jun Sakumaa, Sonomi Satoa, Masahiro Oinumaa, Yutaka Konnoa, Kyouichi Suzukia, Tatsuya Sasakia, Kenji Suzukib, Toshihiko Katakurab and Fumio Shishidob

a Department of Neurosurgery, Fukushima Medical University, Fukushima, Japan
b Department of Radiology, Fukushima Medical University, Fukushima, Japan



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  		FIG 1. Regions of interest at the internal carotid artery (ICA), in the cavernous sinus, and the sigmoid sinus (SS) are set on the axial image. The peak times for the ICA and SS, and the peak-to-peak time are analyzed on time-attenuation curves. ICA indicates internal carotid artery; SS, sigmoid sinus; A, arterial-phase scan for 3D-CT arteriography; V, venous-phase scan for 3D-CT venography



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  		FIG 2. 3D images produced by using MDCT.

A-F, 3D images of the intracranial arteries (A) and veins (B), and the bony structure (C), superior view, are separately demonstrated. 3D-CT arteriography (3D-CT image of arteries and bone) (D), 3D-CT venography (3D-CT image of veins and bone) (E), and fused 3D-CT image (F), superior views, showing the anatomic relationship between the intracranial arteries and veins.



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  		FIG 3. A 57-year-old woman with right internal carotid-ophthalmic artery aneurysm.

A, superior 3D-CT arteriography showing a right internal carotid arteryophthalmic artery aneurysm (black arrow) projecting medially.

B, The superior 3D-CT venography delineates the right cavernous sinus (red arrows).

C–D, The fused 3D-CT images of 3D-CT arteriography and 3D-CT venography, superior (C) and right lateral (D), demonstrates the anatomic relationship between the aneurysm (black arrow) and cavernous sinus (red arrows).

E: The right ophthalmic artery (arrows) is demonstrated on the 3D-CT arteriography with the bone of semitransparent visualization.



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  		FIG 4. A 55-year-old woman with petroclival meningioma.

A, Axial contrast-enhanced T1-weigted image reveals a mass at the right petroclival region.

B, 3D-CT angiography showing the tumor and its adjacent vessels.

C-D, The fused 3D-CT image (C) demonstrates encasement of the superior cerebellar artery (arrows) by the tumor, which was consistent with the surgical finding (D).

E-F, The fused 3D-CT image (F) clearly demonstrates the feeding artery arising from the meningohypohyseal artery which is not visualized on 3D-CT angiography (E).



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  		FIG 5. A 28-year-old woman with arteriovenous malformation in the left parietal lobe.

A, Sagittal T1-weighted image demonstrates an AVM in the parietal lobe and a hematoma in the splenium.

B, A left internal carotid artery angiogram, lateral view, reveals the AVM fed by anterior, middle and posterior cerebral arteries and drained into the vein of Galen.

C, 3D-CT angiography, superior view, showing a vascular malformation.

D-E, The 3D-CT arteriography (D) and 3D-CT venography (E), superior view, reveal the vessels on arterial-phase and venous-phase of the AVM, respectively.

F, The fused 3D-CT image, superior view, facilitates understanding of the anatomic relation of vascular structure between arterial-phase and venous-phase.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X