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- W3120349181 abstract "Abstract Background Hepatectomy, living donor liver transplantations and other major hepatic interventions rely on precise calculation of the total, remnant and graft liver volume. However, liver volume might differ between the pre- and intraoperative situation. To model liver volume changes and develop and validate such pre- and intraoperative assistance systems, exact information about the influence of lung ventilation and intraoperative surgical state on liver volume is essential. Methods This study assessed the effects of respiratory phase, pneumoperitoneum for laparoscopy, and laparotomy on liver volume in a live porcine model. Nine CT scans were conducted per pig ( N = 10), each for all possible combinations of the three operative (native, pneumoperitoneum and laparotomy) and respiratory states (expiration, middle inspiration and deep inspiration). Manual segmentations of the liver were generated and converted to a mesh model, and the corresponding liver volumes were calculated. Results With pneumoperitoneum the liver volume decreased on average by 13.2% (112.7 ml ± 63.8 ml, p < 0.0001) and after laparotomy by 7.3% (62.0 ml ± 65.7 ml, p = 0.0001) compared to native state. From expiration to middle inspiration the liver volume increased on average by 4.1% (31.1 ml ± 55.8 ml, p = 0.166) and from expiration to deep inspiration by 7.2% (54.7 ml ± 51.8 ml, p = 0.007). Conclusions Considerable changes in liver volume change were caused by pneumoperitoneum, laparotomy and respiration. These findings provide knowledge for the refinement of available preoperative simulation and operation planning and help to adjust preoperative imaging parameters to best suit the intraoperative situation." @default.
- W3120349181 created "2021-01-18" @default.
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- W3120349181 date "2021-01-04" @default.
- W3120349181 modified "2023-10-06" @default.
- W3120349181 title "Effects of laparoscopy, laparotomy, and respiratory phase on liver volume in a live porcine model for liver resection" @default.
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- W3120349181 doi "https://doi.org/10.1007/s00464-020-08220-0" @default.
- W3120349181 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8599330" @default.
- W3120349181 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33398570" @default.
- W3120349181 hasPublicationYear "2021" @default.
- W3120349181 type Work @default.