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01.03.2016 | Interventional

Intraprocedural blood volume measurement using C-arm CT as a predictor for treatment response of malignant liver tumours undergoing repetitive transarterial chemoembolization (TACE)

verfasst von: Thomas J. Vogl, Patrik Schaefer, Thomas Lehnert, Nour-Eldin A. Nour-Eldin, Hanns Ackermann, Emmanuel Mbalisike, Renate Hammerstingl, Katrin Eichler, Stephan Zangos, Nagy N. N. Naguib

Erschienen in: European Radiology | Ausgabe 3/2016

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Abstract

Purpose

To evaluate feasibility of measuring parenchymal blood volume (PBV) of malignant hepatic tumours using C-arm CT, test the changes in PBV following repeated transarterial chemoembolization (TACE) and correlate these changes with the change in tumour size in MRI.

Methods

111 patients with liver malignancy were included. Patients underwent MRI and TACE in a 4- to 6-week interval. During intervention C-arm CT was performed. Images were post-processed to generate PBV maps. Blood volume data in C-arm CT and change in size in MRI were evaluated. The correlation between PBV and size was tested using Spearman rank test.

Results

Pre-interventional PBV maps showed a mean blood volume of 84.5 ml/1000 ml ± 62.0, follow-up PBV maps after multiple TACE demonstrated 61.1 ml/1000 ml ± 57.5. The change in PBV was statistically significant (p = 0.02). Patients with initial tumour blood volume >100 ml/1000 ml dropped 7.1 % in size and 47.2 % in blood volume; 50–100 ml/1000 ml dropped 4.6 % in size and 25.7 % in blood volume; and <50 ml/1000 ml decreased 2.8 % in size and increased 82.2 % in blood volume.

Conclusion

PBV measurement of malignant liver tumours using C-arm CT is feasible. Following TACE PBV decreased significantly. Patients with low initial PBV show low local response rates and further increase in blood volume, whereas high initial tumour PBV showed better response to TACE.

Key Points

• Parenchymal blood volume assessment of malignant hepatic lesions using C-arm CT is feasible.

• The parenchymal blood volume is reduced significantly following transarterial chemoembolization.

• Parenchymal blood volume can monitor the response of tumours after transarterial chemoembolization.

• Although not significant, high initial parenchymal blood volume yields better response to TACE.

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Titel: Intraprocedural blood volume measurement using C-arm CT as a predictor for treatment response of malignant liver tumours undergoing repetitive transarterial chemoembolization (TACE)
verfasst von: Thomas J. Vogl
Patrik Schaefer
Thomas Lehnert
Nour-Eldin A. Nour-Eldin
Hanns Ackermann
Emmanuel Mbalisike
Renate Hammerstingl
Katrin Eichler
Stephan Zangos
Nagy N. N. Naguib
Publikationsdatum: 01.03.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 3/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-3869-y

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Intraprocedural blood volume measurement using C-arm CT as a predictor for treatment response of malignant liver tumours undergoing repetitive transarterial chemoembolization (TACE)