Diagnostic accuracy of 64-slice CT in the assessment of coronary stents.
In: La Radiologia medica, Jg. 112 (2007-06-01), Heft 4, S. 526-37
Online
academicJournal
Zugriff:
Purpose: The purpose of this study was to assess the diagnostic accuracy of 64-slice computed tomography (64-CT) coronary angiography in the detection of coronary in-stent restenosis.
Materials and Methods: Ninety-five patients (72 men and 23 women, mean age 58+/-8 years) with previous percutaneous coronary intervention with stenting and suspected restenosis underwent 64-CT (Sensation 64, Siemens). The mean time between stent deployment and 64-CT was 6.1+/-4.2 months. The scan parameters were: slices 32 x 2, individual detector width 0.6 mm, rotation time 0.33 s, feed 3.84 mm/rotation, 120 kV, 900 mAs. After the intravenous administration of iodinated contrast material (Iomeprol 400 mgI/ml, Iomeron, Bracco) and a bolus chaser (40 ml of saline), the scan was completed in <12 s. All coronary segments with a stent were assessed on 64-CT by two observers in consensus and judged as: patent, with intimal hyperplasia (lumen reduction of <50%), with in-stent restenosis (> or =50%), or with in-stent occlusion (100%). The consensus reading was compared with conventional coronary angiography.
Results: Four patients were excluded because of insufficient image quality. In the remaining 91, we assessed 102 stents (31 RCA; 10 LM; 54 LAD; 7 CX). In 14 (13.7%) stents, in-stent restenosis (n=8) or in-stent occlusion (n=6) was found. Intimal hyperplasia was detected in 11 (10.8%) stents. The sensitivity and negative predictive value of 64-CT for in-stent occlusion were 100% and 100%, respectively, whereas for all stenoses, >50% they were 92.9% and 98.7%, respectively.
Conclusions: We found that 64-CT has a high diagnostic accuracy for the detection of in-stent restenosis in a selected patient population.
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Diagnostic accuracy of 64-slice CT in the assessment of coronary stents.
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Autor/in / Beteiligte Person: | Cademartiri, F ; Palumbo, A ; Maffei, E ; La Grutta, L ; Runza, G ; Pugliese, F ; Midiri, M ; Mollet, NR ; Meijboom, WB ; Menozzi, A ; Vignali, L ; Reverberi, C ; Ardissino, D ; Krestin, GP |
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Zeitschrift: | La Radiologia medica, Jg. 112 (2007-06-01), Heft 4, S. 526-37 |
Veröffentlichung: | Milan : Springer Milan ; <i>Original Publication</i>: Torino [etc.] Minerva medica., 2007 |
Medientyp: | academicJournal |
ISSN: | 0033-8362 (print) |
DOI: | 10.1007/s11547-007-0159-z |
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