Intracranial aneurysms treated with endovascular coils: detection of recurrences using unenhanced and contrast-enhanced transcranial color-coded duplex sonography - Turner, CL; Higgins, JN; Gholkar, A; Mendelow, AD; Molyneux, AJ; Kerr, RS; Chawda, S; Kirkpatrick, PJ (Stroke, 2005)