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Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging

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Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging. / Bannas, Peter; Roldán-Alzate, Alejandro; Johnson, Kevin M; Woods, Michael A; Ozkan, Orhan; Motosugi, Utaroh; Wieben, Oliver; Reeder, Scott B; Kramer, Harald.

In: RADIOLOGY, Vol. 281, No. 2, 11.2016, p. 574-582.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Bannas, P, Roldán-Alzate, A, Johnson, KM, Woods, MA, Ozkan, O, Motosugi, U, Wieben, O, Reeder, SB & Kramer, H 2016, 'Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging', RADIOLOGY, vol. 281, no. 2, pp. 574-582. https://doi.org/10.1148/radiol.2016152247

APA

Bannas, P., Roldán-Alzate, A., Johnson, K. M., Woods, M. A., Ozkan, O., Motosugi, U., Wieben, O., Reeder, S. B., & Kramer, H. (2016). Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging. RADIOLOGY, 281(2), 574-582. https://doi.org/10.1148/radiol.2016152247

Vancouver

Bannas P, Roldán-Alzate A, Johnson KM, Woods MA, Ozkan O, Motosugi U et al. Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging. RADIOLOGY. 2016 Nov;281(2):574-582. https://doi.org/10.1148/radiol.2016152247

Bibtex

@article{908bd8f884144177a2b113a1b63e1189,
title = "Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging",
abstract = "Purpose To demonstrate the feasibility of four-dimensional (4D)-flow magnetic resonance (MR) imaging for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after transjugular intrahepatic portosystemic shunt (TIPS) placement. Materials and Methods The institutional review board approved this prospective Health Insurance Portability and Accountability Act compliant study with written informed consent. Four-dimensional-flow MR imaging was performed in seven patients with portal hypertension and refractory ascites before and 2 and 12 weeks after TIPS placement by using a time-resolved three-dimensional radial phase-contrast acquisition. Flow and peak velocity measurements were obtained in the superior mesenteric vein (SMV), splenic vein (SV), portal vein (PV), and the TIPS. Flow volumes and peak velocities in each vessel, as well as the ratio of in-stent to PV flow, were compared before and after TIPS placement by using analysis of variance. Results Flow volumes significantly increased in the SMV (0.24 L/min; 95% confidence interval [CI]: 0.07, 0.41), SV (0.31 L/min; 95% CI: 0.07, 0.54), and PV (0.88 L/min; 95% CI: 0.06, 1.70) after TIPS placement (all P < .05), with no significant difference between the first and second post-TIPS placement acquisitions (all P > .11). Ascites resolved in six of seven patients. In those with resolved ascites, the TIPS-to-PV flow ratio was 0.8 ± 0.2 and 0.9 ± 0.2 at the two post-TIPS time points, respectively, while the observed ratios were 4.6 and 4.3 in the patient with refractory ascites at the two post-TIPS time points, respectively. In this patient, 4D-flow MR imaging demonstrated arterio-portal-venous shunting, with draining into the TIPS. Conclusion Four-dimensional-flow MR imaging is feasible for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after TIPS placement. ({\textcopyright}) RSNA, 2016 Online supplemental material is available for this article.",
author = "Peter Bannas and Alejandro Rold{\'a}n-Alzate and Johnson, {Kevin M} and Woods, {Michael A} and Orhan Ozkan and Utaroh Motosugi and Oliver Wieben and Reeder, {Scott B} and Harald Kramer",
year = "2016",
month = nov,
doi = "10.1148/radiol.2016152247",
language = "English",
volume = "281",
pages = "574--582",
journal = "RADIOLOGY",
issn = "0033-8419",
publisher = "Radiological Society of North America Inc.",
number = "2",

}

RIS

TY - JOUR

T1 - Longitudinal Monitoring of Hepatic Blood Flow before and after TIPS by Using 4D-Flow MR Imaging

AU - Bannas, Peter

AU - Roldán-Alzate, Alejandro

AU - Johnson, Kevin M

AU - Woods, Michael A

AU - Ozkan, Orhan

AU - Motosugi, Utaroh

AU - Wieben, Oliver

AU - Reeder, Scott B

AU - Kramer, Harald

PY - 2016/11

Y1 - 2016/11

N2 - Purpose To demonstrate the feasibility of four-dimensional (4D)-flow magnetic resonance (MR) imaging for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after transjugular intrahepatic portosystemic shunt (TIPS) placement. Materials and Methods The institutional review board approved this prospective Health Insurance Portability and Accountability Act compliant study with written informed consent. Four-dimensional-flow MR imaging was performed in seven patients with portal hypertension and refractory ascites before and 2 and 12 weeks after TIPS placement by using a time-resolved three-dimensional radial phase-contrast acquisition. Flow and peak velocity measurements were obtained in the superior mesenteric vein (SMV), splenic vein (SV), portal vein (PV), and the TIPS. Flow volumes and peak velocities in each vessel, as well as the ratio of in-stent to PV flow, were compared before and after TIPS placement by using analysis of variance. Results Flow volumes significantly increased in the SMV (0.24 L/min; 95% confidence interval [CI]: 0.07, 0.41), SV (0.31 L/min; 95% CI: 0.07, 0.54), and PV (0.88 L/min; 95% CI: 0.06, 1.70) after TIPS placement (all P < .05), with no significant difference between the first and second post-TIPS placement acquisitions (all P > .11). Ascites resolved in six of seven patients. In those with resolved ascites, the TIPS-to-PV flow ratio was 0.8 ± 0.2 and 0.9 ± 0.2 at the two post-TIPS time points, respectively, while the observed ratios were 4.6 and 4.3 in the patient with refractory ascites at the two post-TIPS time points, respectively. In this patient, 4D-flow MR imaging demonstrated arterio-portal-venous shunting, with draining into the TIPS. Conclusion Four-dimensional-flow MR imaging is feasible for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after TIPS placement. (©) RSNA, 2016 Online supplemental material is available for this article.

AB - Purpose To demonstrate the feasibility of four-dimensional (4D)-flow magnetic resonance (MR) imaging for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after transjugular intrahepatic portosystemic shunt (TIPS) placement. Materials and Methods The institutional review board approved this prospective Health Insurance Portability and Accountability Act compliant study with written informed consent. Four-dimensional-flow MR imaging was performed in seven patients with portal hypertension and refractory ascites before and 2 and 12 weeks after TIPS placement by using a time-resolved three-dimensional radial phase-contrast acquisition. Flow and peak velocity measurements were obtained in the superior mesenteric vein (SMV), splenic vein (SV), portal vein (PV), and the TIPS. Flow volumes and peak velocities in each vessel, as well as the ratio of in-stent to PV flow, were compared before and after TIPS placement by using analysis of variance. Results Flow volumes significantly increased in the SMV (0.24 L/min; 95% confidence interval [CI]: 0.07, 0.41), SV (0.31 L/min; 95% CI: 0.07, 0.54), and PV (0.88 L/min; 95% CI: 0.06, 1.70) after TIPS placement (all P < .05), with no significant difference between the first and second post-TIPS placement acquisitions (all P > .11). Ascites resolved in six of seven patients. In those with resolved ascites, the TIPS-to-PV flow ratio was 0.8 ± 0.2 and 0.9 ± 0.2 at the two post-TIPS time points, respectively, while the observed ratios were 4.6 and 4.3 in the patient with refractory ascites at the two post-TIPS time points, respectively. In this patient, 4D-flow MR imaging demonstrated arterio-portal-venous shunting, with draining into the TIPS. Conclusion Four-dimensional-flow MR imaging is feasible for noninvasive longitudinal hemodynamic monitoring of hepatic blood flow before and after TIPS placement. (©) RSNA, 2016 Online supplemental material is available for this article.

U2 - 10.1148/radiol.2016152247

DO - 10.1148/radiol.2016152247

M3 - SCORING: Journal article

C2 - 27171019

VL - 281

SP - 574

EP - 582

JO - RADIOLOGY

JF - RADIOLOGY

SN - 0033-8419

IS - 2

ER -