Abstract
Objectives
To study feasibility and validity of a new software application for intraprocedural assessment of perfusion during chemoembolisation of melanoma metastases.
Methodology
In a prospective phase-II trial, ten melanoma patients with liver-only metastases underwent chemoembolisation with doxorubicin-eluting beads (DEBDOX-TACE). Tumour perfusion was evaluated immediately before and after treatment at cone beam computer tomography (CBCT) using a new software application. For control and comparison, patients underwent perfusion measurement via contrast-enhanced multidetector CT (MDCT) before and after treatment.
Results
CBCT showed 94.7 % reduction in perfusion in metastases after DEBDOX-TACE, whereas MDCT showed 96.8 %. Reduction in perfusion after treatment was statistically significant (p < 0.01) for both methods. The additional time needed for data acquisition during treatment was 5 min per case or less; the post-processing data analysis was 10 min or less. Perfusion imaging was associated with additional contrast agent and patient exposure to radiation (dose-length product [DLP]): 18 ml and 394 mGy*cm in CBCT and 100 ml and 446 mGy*cm in MDCT, respectively.
Conclusions
Reduction in perfusion of melanoma metastases after DEBDOX-TACE can be reliably assessed during the intervention via perfusion software at CBCT. Data acquisition and analysis require additional time but can be easily performed during the treatment.
Key Points
• Tumour perfusion of melanoma metastases can be assessed at cone beam CT.
• The software shows a significant decrease of tumour perfusion after DEBDOX-TACE.
• Data acquisition and analysis require an acceptable additional time during the procedure.
• CBCT requires less radiation exposure and contrast for perfusion study than MSCT.
• This software can monitor the course of DEBDOX-TACE in melanoma metastases.
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Abbreviations
- (c)TACE:
-
(conventional) Transarterial chemoembolisation
- CBCT:
-
Cone beam computed tomography (synonym: C-arm CT)
- DEB:
-
Drug-eluting beads
- DOX:
-
Doxorubicin
- HPI:
-
Hepatic Perfusion Index
- MDCT:
-
Multidetector computed tomography (synonym Multislice-CT)
- MM:
-
Malignant melanoma
- PBV:
-
Parenchymal blood volume
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Funding
This study has received funding by Siemens Healthlineers Germany; drug-eluting beads were provided by BTG Biocompatibles UK.
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The scientific guarantor of this publication is Philippe L Pereira.
Conflict of interest
The authors of this manuscript declare relationships with the following companies: A grant was received for cooperation on Interventional Oncology with Siemens Medical Solutions, which provides software and hardware for this study. PLP has received honoraria from BTG for advisory boards and conferences.
Statistics and biometry
One of the authors (KK) has significant statistical expertise.
Informed consent
Written informed consent was obtained from all subjects (patients) in this study.
Methodology
• prospective
• case-control study
• performed at one institution
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Pereira, P.L., Krüger, K., Hohenstein, E. et al. Intraprocedural 3D perfusion measurement during chemoembolisation with doxorubicin-eluting beads in liver metastases of malignant melanoma. Eur Radiol 28, 1456–1464 (2018). https://doi.org/10.1007/s00330-017-5099-y
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DOI: https://doi.org/10.1007/s00330-017-5099-y