In-stent restenosis and multislice computed tomography: is the method ready to start?
We present two patients revascularized by coronary stents and evaluated by multislice computed tomography (CT). In first patient, angio-CT (16 slices/rotation scanner) detected a high-grade restenosis on the distal part of a drug-eluting stent; conventional coronary angiography confirmed the diagnosis. In second patient, angio-CT (64 slices/rotation) showed a tissue proliferation, non-flow-limiting, in the proximal part of a bare metal stent; conventional angiography confirmed the diagnosis. Blooming effects and partial volume averaging still limit the widespread application of this method. New scanners and the use of a special convolution kernel are likely to improve the accuracy of CT angiography in patients with stents.
Martuscelli
Eugenio
E
Department of Internal Medicine, Division of Cardiology, University of Rome (Tor Vergata), Rome, Italy. e.martuscelli@libero.it
Razzini
Cinzia
C
D'Eliseo
Alessia
A
Di Luozzo
Marco
M
Mauro
Borzi
B
Romeo
Francesco
F
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects*; D003287:Contrast Media; D017023:Coronary Angiography / Q000379:methods*; D023903:Coronary Restenosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D015607:Stents / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
D003287:Contrast Media