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Statements

Subject Item
n2:RIV%2F00216208%3A11140%2F14%3A10210032%21RIV15-MSM-11140___
rdf:type
n10:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1016/j.ejrad.2013.12.004
dcterms:description
Purpose: To verify the technical feasibility of low contrast volume (40 mL) run-off CT angiography (run-off CTA) with the individual scan time optimization based on double-level test bolus technique. Materials and methods: A prospective study of 92 consecutive patients who underwent run-off CTA performed with 40 mL of contrast medium (injection rate of 6 mL/s) and optimized scan times on a second generation of dual-source CT. Individual optimized scan times were calculated from aortopopliteal transit times obtained on the basis of double-level test bolus technique - the single injection of 10 mL test bolus and dynamic acquisitions in two levels (abdominal aorta and popliteal arteries). Intraluminal attenuation (HU) was measured in 6 levels (aorta, iliac, femoral and popliteal arteries, middle and distal lower-legs) and subjective quality (3-point score) was assessed. Relations of image quality, test bolus parameters and arterial circulation involvement were analyzed. Results: High mean attenuation (HU) values (468; 437; 442; 440; 342; 274) and quality score in all monitored levels was achieved. In 91 patients (0.99) the sufficient diagnostic quality (score 1-2) in aorta, iliac and femoral arteries was determined. A total of 6 patients (0.07) were not evaluable in distal lower-legs. Only the weak indirect correlation of image quality and test-bolus parameters was proved in iliac, femoral and popliteal levels (r values: -0.263, -0.298 and -0.254). The statistically significant difference of the test-bolus parameters and image quality was proved in patients with occlusive and aneurysmal disease. Conclusion: We proved the technical feasibility and sufficient quality of run-off CTA with low volume of contrast medium and optimized scan time according to aortopopliteal transit time calculated from double-level test bolus. (C) 2013 Elsevier Ireland Ltd. All rights reserved. Purpose: To verify the technical feasibility of low contrast volume (40 mL) run-off CT angiography (run-off CTA) with the individual scan time optimization based on double-level test bolus technique. Materials and methods: A prospective study of 92 consecutive patients who underwent run-off CTA performed with 40 mL of contrast medium (injection rate of 6 mL/s) and optimized scan times on a second generation of dual-source CT. Individual optimized scan times were calculated from aortopopliteal transit times obtained on the basis of double-level test bolus technique - the single injection of 10 mL test bolus and dynamic acquisitions in two levels (abdominal aorta and popliteal arteries). Intraluminal attenuation (HU) was measured in 6 levels (aorta, iliac, femoral and popliteal arteries, middle and distal lower-legs) and subjective quality (3-point score) was assessed. Relations of image quality, test bolus parameters and arterial circulation involvement were analyzed. Results: High mean attenuation (HU) values (468; 437; 442; 440; 342; 274) and quality score in all monitored levels was achieved. In 91 patients (0.99) the sufficient diagnostic quality (score 1-2) in aorta, iliac and femoral arteries was determined. A total of 6 patients (0.07) were not evaluable in distal lower-legs. Only the weak indirect correlation of image quality and test-bolus parameters was proved in iliac, femoral and popliteal levels (r values: -0.263, -0.298 and -0.254). The statistically significant difference of the test-bolus parameters and image quality was proved in patients with occlusive and aneurysmal disease. Conclusion: We proved the technical feasibility and sufficient quality of run-off CTA with low volume of contrast medium and optimized scan time according to aortopopliteal transit time calculated from double-level test bolus. (C) 2013 Elsevier Ireland Ltd. All rights reserved.
dcterms:title
Low contrast volume run-off CT angiography with optimized scan time based on double-level test bolus technique - feasibility study Low contrast volume run-off CT angiography with optimized scan time based on double-level test bolus technique - feasibility study
skos:prefLabel
Low contrast volume run-off CT angiography with optimized scan time based on double-level test bolus technique - feasibility study Low contrast volume run-off CT angiography with optimized scan time based on double-level test bolus technique - feasibility study
skos:notation
RIV/00216208:11140/14:10210032!RIV15-MSM-11140___
n3:aktivita
n13:I
n3:aktivity
I
n3:cisloPeriodika
3
n3:dodaniDat
n6:2015
n3:domaciTvurceVysledku
n9:2185571 n9:7611390 n9:1440497
n3:druhVysledku
n15:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
26658
n3:idVysledku
RIV/00216208:11140/14:10210032
n3:jazykVysledku
n11:eng
n3:klicovaSlova
Peripheral vascular disease; Contrast medium; Test bolus; Run-off; CT angiography
n3:klicoveSlovo
n4:Run-off n4:Test%20bolus n4:Contrast%20medium n4:Peripheral%20vascular%20disease n4:CT%20angiography
n3:kodStatuVydavatele
IE - Irsko
n3:kontrolniKodProRIV
[243AA72E19BE]
n3:nazevZdroje
European Journal of Radiology
n3:obor
n18:FP
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
8
n3:rokUplatneniVysledku
n6:2014
n3:svazekPeriodika
83
n3:tvurceVysledku
Vendiš, Tomáš Baxa, Jan Flohr, Thomas Schmidt, Bernhard Moláček, Jiří Štěpánková, Lucie Ferda, Jiří Korporaal, Johannes G.
n3:wos
000331111000006
s:issn
0720-048X
s:numberOfPages
9
n14:doi
10.1016/j.ejrad.2013.12.004
n8:organizacniJednotka
11140