| KOK, Madeleine, Jakub TUREK, Casper MIHL, Sebastian D. REINARTZ, Robin F. GOHMANN, Estelle C. NIJSSEN, Suzanne KATS, Vincent G. van OMMEN, Bas L.J.H. KIETSELAER, Joachim E. WILDBERGER a Marco DAS. Low contrast media volume in pre-TAVI CT examinations. European Radiology. New York: Springer, 2016, roč. 26, č. 8, s. 2426-2435. ISSN 0938-7994. Dostupné z: https://dx.doi.org/10.1007/s00330-015-4080-x. |
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@article{1322862,
author = {Kok, Madeleine and Turek, Jakub and Mihl, Casper and Reinartz, Sebastian D. and Gohmann, Robin F. and Nijssen, Estelle C. and Kats, Suzanne and Ommen, Vincent G. van and Kietselaer, Bas L.J.H. and Wildberger, Joachim E. and Das, Marco},
article_location = {New York},
article_number = {8},
doi = {http://dx.doi.org/10.1007/s00330-015-4080-x},
keywords = {Transcatheter aortic valve implantation; Multi detector-row CT; Contrast media; Diagnostic imaging; Contrast induced nephropathy},
language = {eng},
issn = {0938-7994},
journal = {European Radiology},
title = {Low contrast media volume in pre-TAVI CT examinations},
volume = {26},
year = {2016}
}
TY - JOUR
ID - 1322862
AU - Kok, Madeleine - Turek, Jakub - Mihl, Casper - Reinartz, Sebastian D. - Gohmann, Robin F. - Nijssen, Estelle C. - Kats, Suzanne - Ommen, Vincent G. van - Kietselaer, Bas L.J.H. - Wildberger, Joachim E. - Das, Marco
PY - 2016
TI - Low contrast media volume in pre-TAVI CT examinations
JF - European Radiology
VL - 26
IS - 8
SP - 2426-2435
EP - 2426-2435
PB - Springer
SN - 09387994
KW - Transcatheter aortic valve implantation
KW - Multi detector-row CT
KW - Contrast media
KW - Diagnostic imaging
KW - Contrast induced nephropathy
N2 - To evaluate image quality using reduced contrast media (CM) volume in pre-TAVI assessment. Forty-seven consecutive patients referred for pre-TAVI examination were evaluated. Patients were divided into two groups: group 1 BMI < 28 kg/m(2) (n = 29); and group 2 BMI > 28 kg/m(2) (n = 18). Patients received a combined scan protocol: retrospective ECG-gated helical CTA of the aortic root (80kVp) followed by a high-pitch spiral CTA (group 1: 70 kV; group 2: 80 kVp) from aortic arch to femoral arteries. All patients received one bolus of CM (300 mgI/ml): group 1: volume = 40 ml; flow rate = 3 ml/s, group 2: volume = 53 ml; flow rate = 4 ml/s. Attenuation values (HU) and contrast-to-noise ratio (CNR) were measured at the levels of the aortic root (helical) and peripheral arteries (high-pitch). Diagnostic image quality was considered sufficient at attenuation values > 250HU and CNR > 10. Diagnostic image quality for TAVI measurements was obtained in 46 patients. Mean attenuation values and CNR (HU +/- SD) at the aortic root (helical) were: group 1: 381 +/- 65HU and 13 +/- 8; group 2: 442 +/- 68HU and 10 +/- 5. At the peripheral arteries (high-pitch), mean values were: group 1: 430 +/- 117HU and 11 +/- 6; group 2: 389 +/- 102HU and 13 +/- 6. CM volume can be substantially reduced using low kVp protocols, while maintaining sufficient image quality for the evaluation of aortic root and peripheral access sites. Image quality could be maintained using low kVp scan protocols. Low kVp protocols reduce contrast media volume by 34-67 %. Less contrast media volume lowers the risk of contrast-induced nephropathy.
ER -
KOK, Madeleine, Jakub TUREK, Casper MIHL, Sebastian D. REINARTZ, Robin F. GOHMANN, Estelle C. NIJSSEN, Suzanne KATS, Vincent G. van OMMEN, Bas L.J.H. KIETSELAER, Joachim E. WILDBERGER a Marco DAS. Low contrast media volume in pre-TAVI CT examinations. \textit{European Radiology}. New York: Springer, 2016, roč.~26, č.~8, s.~2426-2435. ISSN~0938-7994. Dostupné z: https://dx.doi.org/10.1007/s00330-015-4080-x.
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