Acute pulmonary embolism: role of helical CT scintigraphy in 164 patients with intermediate probability at VQ scintigraphy and normal results at duplex ultrasound of the legs - Ferretti, GR; Bosson, JL; Buffaz, PD; Ayanian, D; Pison, C; Blanc, F; Carpentier, F; carpentier, P; Coulomb, M. (Radiology, 1997)