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AJNR - American Journal of Neuroradiology

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Creation of Four Experimental Aneurysms with Different Hemodynamics in One Dog

Yong Sam Shin^a, Yasunari Niimi^a, Yoshikazu Yoshino^a, Joon K. Song^a, Michael Silane^a and Alejandro Berenstein^a

^a From the Center for Endovascular Surgery, Beth Israel Hyman-Newman Institute for Neurology and Neurosurgery, Roosevelt Hospital, Continuum Health Care Partners, New York, NY

View larger version (19K): [in a new window]   FIG 1. Schematic of the four aneurysms surgically created in one dog. A indicates arterial-stump aneurysm; B, bifurcation aneurysm; C, side-wall aneurysm; and D, small branch-artery aneurysm. CTA indicates cranial thyroid artery; SCA, subclavian artery; and VA, vertebral artery.

View larger version (115K): [in a new window]   FIG 2. Digital subtraction angiogram shows the innominate artery. Left CCA is ligated proximally and divided just above the proximal ligature. Stump of the left CCA is shown as an aneurysmal pouch (asterisk).

View larger version (100K): [in a new window]   FIG 3. Bifurcation aneurysm is created by using a venous pouch of external jugular vein after a partial end-to-side anastomosis of the left CCA to the proximal part of the arteriotomy of the right CCA. Side-wall aneurysm is created by using a venous pouch of the external jugular vein with slight oblique orientation, and a small branch-artery aneurysm is created by using a venous pouch of the anterior facial vein at the junction of the CCA and cranial thyroid artery (asterisk). A, Intraoperative view. B, Digital subtraction image.