Bittner DO, Klinghammer L, Schuhbaeck A, Hell MM, Muschiol G, Gauss S, Lell M, Uder M, Hoffmann U, Achenbach S, Marwan M, Arnold M (2016)
Publication Type: Journal article
Publication year: 2016
Book Volume: 26
Pages Range: 4497-4504
Journal Issue: 12
DOI: 10.1007/s00330-016-4320-8
Chronic renal failure is common in patients referred for transcatheter aortic valve implantation (TAVI). CT angiography is recommended and provides crucial information prior to TAVI. We evaluated the feasibility of a reduced contrast volume protocol for pre-procedural CT imaging.Forty consecutive patients were examined with prospectively ECG-triggered high-pitch spiral acquisition using a novel third-generation dual-source CT system; 38 ml contrast agent was used. Image quality was graded on a visual scale (1-4). Contrast attenuation was measured at the level of the aortic root and at the iliac bifurcation.Mean patient age was 82 ± 6 years (23 males; 58 %). Mean attenuation/average image quality was 285 ± 60 HU/1.5 at the aortic annulus compared to 289 ± 74 HU/1.8 at the iliac bifurcation (p = 0.77/p = 0.29). Mean estimated effective radiation dose was 2.9 ± 0.3 mSv. A repeat acquisition was necessary in one patient due to image quality. Out of the 35 patients who underwent TAVI, 31 (89 %) patients had no or mild aortic regurgitation. Thirty-two (91 %) patients were discharged successfully.Pre-procedural CTA with a total of 38 ml contrast volume is feasible and clinically useful, using third-generation dual-source CT, allowing comprehensive imaging for procedural success.o Reduction of contrast agent volume is crucial in patients with chronic renal failure. o Novel third-generation computed tomography helps to reduce contrast agent volume. o Pre-procedural CT allows comprehensive imaging for procedural success before heart valve implantation. o A low-contrast CT protocol is feasible for pre-procedural TAVI planning.
APA:
Bittner, D.O., Klinghammer, L., Schuhbaeck, A., Hell, M.M., Muschiol, G., Gauss, S.,... Arnold, M. (2016). Contrast volume reduction using third generation dual source computed tomography for the evaluation of patients prior to transcatheter aortic valve implantation. European Radiology, 26(12), 4497-4504. https://doi.org/10.1007/s00330-016-4320-8
MLA:
Bittner, Daniel O., et al. "Contrast volume reduction using third generation dual source computed tomography for the evaluation of patients prior to transcatheter aortic valve implantation." European Radiology 26.12 (2016): 4497-4504.
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