BACKGROUND: Liver volumetry is a critical component of safe hepatic surgery, in order to minimize the risk of postoperative liver failure. Liver volumes can be calculated routinely using the time-consuming gold standard method of manual volumetry. The current work sought to evaluate an alternative automatic technique based on a novel 3D virtual planning software, and to compare it to the manual technique. METHODS: A prospective study of patients undergoing liver resection was conducted. Every patient had a pre and 2-day postoperative CT-scan. For each patient, total, remnant and resected volumes were calculated manually and automatically. Planes of resection were verified by a hepatobiliary surgeon and compared with postoperative volumes. Paired t-tests and correlation coefficients were calculated. RESULTS: A major hepatectomy was carried out in 36/43 patients. The automatic TLV (1,759 mL) and the manual TLV (1,832 mL) were significantly different (p < 0.001), but extremely highly correlated (r = 0.989). The percentages of preoperative RLV (manual 58.5%, automatic 58.9%) were similar, with an excellent correlation of 0.917. The preoperative RLV were matched with the 2-day postoperative RLV showing a significant difference (p = 0.0301). The resected volumes using both techniques (871 and 832 mL) were compared with the resected specimen volume (670 mL), showing a significant difference (p < 0.001) but a high degree of correlation (r = 0.874). CONCLUSION: The 3D virtual surgical planning software is accurate and reliable in determining the total liver and future remnant liver volumes. This technique demonstrates a good correlation with the manual technique. Future work will be required to confirm these findings and to evaluate the clinical value of the three-dimensional planning platform.
BACKGROUND: Liver volumetry is a critical component of safe hepatic surgery, in order to minimize the risk of postoperative liver failure. Liver volumes can be calculated routinely using the time-consuming gold standard method of manual volumetry. The current work sought to evaluate an alternative automatic technique based on a novel 3D virtual planning software, and to compare it to the manual technique. METHODS: A prospective study of patients undergoing liver resection was conducted. Every patient had a pre and 2-day postoperative CT-scan. For each patient, total, remnant and resected volumes were calculated manually and automatically. Planes of resection were verified by a hepatobiliary surgeon and compared with postoperative volumes. Paired t-tests and correlation coefficients were calculated. RESULTS: A major hepatectomy was carried out in 36/43 patients. The automatic TLV (1,759 mL) and the manual TLV (1,832 mL) were significantly different (p < 0.001), but extremely highly correlated (r = 0.989). The percentages of preoperative RLV (manual 58.5%, automatic 58.9%) were similar, with an excellent correlation of 0.917. The preoperative RLV were matched with the 2-day postoperative RLV showing a significant difference (p = 0.0301). The resected volumes using both techniques (871 and 832 mL) were compared with the resected specimen volume (670 mL), showing a significant difference (p < 0.001) but a high degree of correlation (r = 0.874). CONCLUSION: The 3D virtual surgical planning software is accurate and reliable in determining the total liver and future remnant liver volumes. This technique demonstrates a good correlation with the manual technique. Future work will be required to confirm these findings and to evaluate the clinical value of the three-dimensional planning platform.
Authors: J N Vauthey; A Chaoui; K A Do; M M Bilimoria; M J Fenstermacher; C Charnsangavej; M Hicks; G Alsfasser; G Lauwers; I F Hawkins; J Caridi Journal: Surgery Date: 2000-05 Impact factor: 3.982
Authors: L Soler; H Delingette; G Malandain; J Montagnat; N Ayache; C Koehl; O Dourthe; B Malassagne; M Smith; D Mutter; J Marescaux Journal: Comput Aided Surg Date: 2001
Authors: S Satou; Y Sugawara; S Tamura; Y Kishi; J Kaneko; Y Matsui; N Kokudo; M Makuuchi Journal: Transplant Proc Date: 2007 Jan-Feb Impact factor: 1.066
Authors: H G Rau; R Schauer; T Helmberger; N Holzknecht; B von Rückmann; L Meyer; E Buttler; M Kessler; G Zahlmann; D Schuhmann; F W Schildberg Journal: Langenbecks Arch Surg Date: 2000-04 Impact factor: 3.445
Authors: Jean-Nicolas Vauthey; Eddie K Abdalla; Dorota A Doherty; Philippe Gertsch; Marc J Fenstermacher; Evelyne M Loyer; Jan Lerut; Roland Materne; Xuemei Wang; Arthur Encarnacion; Delise Herron; Christian Mathey; Giovanni Ferrari; Chuslip Charnsangavej; Kim-Anh Do; Alban Denys Journal: Liver Transpl Date: 2002-03 Impact factor: 5.799