DCE-MRI of the liver: reconstruction of the arterial input function using a low dose pre-bolus contrast injection

To assess the quality of the arterial input function (AIF) reconstructed using a dedicated pre-bolus low-dose contrast material injection imaged with a high temporal resolution and the resulting estimated liver perfusion parameters. In this IRB-approved prospective study, 24 DCE-MRI examinations wer...

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Veröffentlicht in:PloS one 2014-12, Vol.9 (12), p.e115667-e115667
Hauptverfasser: Jajamovich, Guido H, Calcagno, Claudia, Dyvorne, Hadrien A, Rusinek, Henry, Taouli, Bachir
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Calcagno, Claudia
Dyvorne, Hadrien A
Rusinek, Henry
Taouli, Bachir
description To assess the quality of the arterial input function (AIF) reconstructed using a dedicated pre-bolus low-dose contrast material injection imaged with a high temporal resolution and the resulting estimated liver perfusion parameters. In this IRB-approved prospective study, 24 DCE-MRI examinations were performed in 21 patients with liver disease (M/F 17/4, mean age 56 y). The examination consisted of 1.3 mL and 0.05 mmol/kg of gadobenate dimeglumine for pre-bolus and main bolus acquisitions, respectively. The concentration-curve of the abdominal aorta in the pre-bolus acquisition was used to reconstruct the AIF. AIF quality and shape parameters obtained with pre-bolus and main bolus acquisitions and the resulting estimated hepatic perfusion parameters obtained with a dual-input single compartment model were compared between the 2 methods. Test-retest reproducibility of perfusion parameters were assessed in three patients. The quality of the pre-bolus AIF curve was significantly better than that of main bolus AIF. Shape parameters peak concentration, area under the time activity curve of gadolinium contrast at 60 s and upslope of pre-bolus AIF were all significantly higher, while full width at half maximum was significantly lower than shape parameters of main bolus AIF. Improved liver perfusion parameter reproducibility was observed using pre-bolus acquisition [coefficient of variation (CV) of 4.2%-38.7% for pre-bolus vs. 12.1-71.4% for main bolus] with the exception of distribution volume (CV of 23.6% for pre-bolus vs. 15.8% for main bolus). The CVs between pre-bolus and main bolus for the perfusion parameters were lower than 14%. The AIF reconstructed with pre-bolus low dose contrast injection displays better quality and shape parameters and enables improved liver perfusion parameter reproducibility, although the resulting liver perfusion parameters demonstrated no clinically significant differences between pre-bolus and main bolus acquisitions.
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In this IRB-approved prospective study, 24 DCE-MRI examinations were performed in 21 patients with liver disease (M/F 17/4, mean age 56 y). The examination consisted of 1.3 mL and 0.05 mmol/kg of gadobenate dimeglumine for pre-bolus and main bolus acquisitions, respectively. The concentration-curve of the abdominal aorta in the pre-bolus acquisition was used to reconstruct the AIF. AIF quality and shape parameters obtained with pre-bolus and main bolus acquisitions and the resulting estimated hepatic perfusion parameters obtained with a dual-input single compartment model were compared between the 2 methods. Test-retest reproducibility of perfusion parameters were assessed in three patients. The quality of the pre-bolus AIF curve was significantly better than that of main bolus AIF. Shape parameters peak concentration, area under the time activity curve of gadolinium contrast at 60 s and upslope of pre-bolus AIF were all significantly higher, while full width at half maximum was significantly lower than shape parameters of main bolus AIF. Improved liver perfusion parameter reproducibility was observed using pre-bolus acquisition [coefficient of variation (CV) of 4.2%-38.7% for pre-bolus vs. 12.1-71.4% for main bolus] with the exception of distribution volume (CV of 23.6% for pre-bolus vs. 15.8% for main bolus). The CVs between pre-bolus and main bolus for the perfusion parameters were lower than 14%. The AIF reconstructed with pre-bolus low dose contrast injection displays better quality and shape parameters and enables improved liver perfusion parameter reproducibility, although the resulting liver perfusion parameters demonstrated no clinically significant differences between pre-bolus and main bolus acquisitions.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25546176</pmid><doi>10.1371/journal.pone.0115667</doi><oa>free_for_read</oa></addata></record>
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subjects Abdomen
Adult
Aged
Aorta
Biology and Life Sciences
Coefficient of variation
Contrast media
Contrast Media - administration & dosage
Coronary vessels
Drug delivery systems
Drug dosages
Female
Gadolinium
Hepatitis - diagnosis
Humans
Injection
Liver
Liver - blood supply
Liver - physiology
Liver diseases
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Medicine
Medicine and Health Sciences
Meglumine - administration & dosage
Meglumine - analogs & derivatives
Middle Aged
NMR
Nuclear magnetic resonance
Organometallic Compounds - administration & dosage
Parameter estimation
Patients
Perfusion
Quality assessment
Reproducibility
Temporal resolution
Test procedures
Veins & arteries
title DCE-MRI of the liver: reconstruction of the arterial input function using a low dose pre-bolus contrast injection
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