Andrea Giovagnoni, Presenter: Nothing to Disclose

Letizia Ottaviani, Abstract Co-Author: Nothing to Disclose

Anna Mensą, Abstract Co-Author: Nothing to Disclose

Roberta Bartolucci, Abstract Co-Author: Nothing to Disclose

Enrico Paci MD, Abstract Co-Author: Nothing to Disclose

Luca Salvolini, Abstract Co-Author: Nothing to Disclose

To evaluate the role covered by the MRA and MDTC in the study of the arterial disease of the lower limbs, considering the DSA as gold standard.

30 patients with peripheral arterial occlusive have been observed: 20 were at Fontaine stage II and 10 at stage III. They were subjected to the following studies: MDTC (Lightspeed Plus GE 8 ch, coll 2,5 mm, int.recon 1,25 mm, 120 ml iodate contrast agent, flow rate 3,5 ml/sec, mono-biphasic injection, smart prep); MRA (GE Cvi 1,5T), Slew rate 150 T/m/s, FSPGR coronal 3D, 3 steps,body coil, Gd 0,2 mmol/Kg,smart prep) and DSA. MDTC and MRA images were post processed using MIP/VR(MDTC) and MIP/VR(MRA). Two readers independently interpreted the images of 570 arterial segments (19 segments each patient) concerning the absence/presence of atherosclerotic lesions : normal 99%.The result of image interpretation were evaluated for strength of agreement by using k statistics.

The agreement in the identification of normal segments ,of stenosis and occlusions was in MRA/DSA k = 0,84, in MDTC/DSA k = 0,88 and in MRA/MDTC k= 0,9. In 22 patients (73%) the evaluation of severe, critical stenosis was better achieved with MRA/MDTC than with DSA.

MRA and MDTC appear valid non-invasive methods which could replace DSA especially in severe occlusion peripheral disease.

Giovagnoni, A, Ottaviani, L, Mensą, A, Bartolucci, R, Paci, E, Salvolini, L, A Prospective Cross-over Study of Group of Patients with Peripheral Arterial Disease between Peripheral MRA, MDTC, and DSA.  Radiological Society of North America 2005 Scientific Assembly and Annual Meeting, November 27 - December 2, 2005 ,Chicago IL. http://archive.rsna.org/2005/4412463.html