scholarly journals Comparing short-time outcomes of three-dimensional and two-dimensional totally laparoscopic surgery for colon cancer using overlapped delta-shaped anastomosis

2019 ◽  
Vol Volume 12 ◽  
pp. 669-675 ◽  
Author(s):  
Hao Su ◽  
Weisen Jin ◽  
Peng Wang ◽  
Mandula Bao ◽  
Xuewei Wang ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Totally Laparoscopic ◽  
Short Time

scholarly journals Wavelet Transform in Vibration Analysis for Mechanical Fault Diagnosis

1996 ◽  
Vol 3 (1) ◽  
pp. 17-26 ◽  
Author(s):  
W.J. Wang
Keyword(s):  
Wavelet Transform ◽  
Time Scale ◽  
Vibration Analysis ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Vibration Signals ◽  
Time Frequency ◽  
Special Cases ◽  
Mechanical Faults ◽  
Short Time

The wavelet transform is introduced to indicate short-time fault effects in associated vibration signals. The time-frequency and time-scale representations are unified in a general form of a three-dimensional wavelet transform, from which two-dimensional transforms with different advantages are treated as special cases derived by fixing either the scale or frequency variable. The Gaussian enveloped oscillating wavelet is recommended to extract different sizes of features from the signal. It is shown that the time-frequency and time-scale distributions generated by the wavelet transform are effective in identifying mechanical faults.

Three-dimensional Computed Tomography for Analyzing the Vascular Anatomy in Laparoscopic Surgery for Right-sided Colon Cancer

2013 ◽  
Vol 23 (6) ◽  
pp. 536-539 ◽  
Author(s):  
Keitaro Hirai ◽  
Daisuke Yoshinari ◽  
Hiroomi Ogawa ◽  
Seshiru Nakazawa ◽  
Yoshiaki Takase ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Three Dimensional ◽  
Vascular Anatomy

Comparison of three-dimensional versus two-dimensional laparoscopic surgery for rectal cancer: a meta-analysis

2019 ◽  
Vol 34 (9) ◽  
pp. 1577-1583 ◽  
Author(s):  
Laiyuan Li ◽  
Xianhua Gao ◽  
Yinyin Guo ◽  
Yanxin Luo ◽  
Yang Luo ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Laparoscopic Surgery ◽  
Meta Analysis ◽  
Three Dimensional ◽  
Two Dimensional

scholarly journals Indocyanine green fluorescence imaging to assess bowel perfusion during totally laparoscopic surgery for colon cancer

2020 ◽  
Author(s):  
Hao Su ◽  
Hongliang Wu ◽  
Bao Mandula ◽  
Shou Luo ◽  
Xuewei Wang ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Indocyanine Green ◽  
Fluorescence Imaging ◽  
Operative Time ◽  
Green Fluorescence ◽  
Indocyanine Green Fluorescence ◽  
Indocyanine Green Fluorescence Imaging ◽  
Bowel Perfusion ◽  
Totally Laparoscopic

Abstract Aim: To retrospectively evaluate the feasibility and safety of intraoperative assessment of bowel perfusion in totally laparoscopic surgery for colon cancer using indocyanine green fluorescence imaging (IGFI).Methods: From October 2017 to June 2019, consecutive patients with colon cancer who underwent totally laparoscopic surgery were enrolled retrospectively and grouped into the IGFI group (n=84) and control group (n=105). In the IGFI group, indocyanine green (ICG) was injected intravenously, and the bowel perfusion was observed using a fluorescence camera system prior to and after completion of the anastomosis.Results: The two groups were demographically comparable. The IGFI group exhibited a significantly shorter operative time (p=0.0374) while intraoperative blood loss did not significantly differ among the groups (p=0.062). In the IGFI group, average time to perfusion fluorescence was 48.4±14.0 s after ICG injection, and four patients (4.8%) were required to choose a more proximal point of resection due to the lack of adequate fluorescence at the point previously selected. There were no differences in terms of pathological outcomes, postoperative recovery and the postoperative complication rates between the groups (p＞0.05). Conclusion: IGFI shows promise as a safe and feasible tool to assess bowel perfusion during a totally laparoscopic surgery for colon cancer and may reduce the operative time.

scholarly journals Indocyanine green fluorescence imaging to assess bowel perfusion during totally laparoscopic surgery for colon cancer

2020 ◽  
Author(s):  
Hao Su ◽  
Hongliang Wu ◽  
Bao Mandula ◽  
Shou Luo ◽  
Xuewei Wang ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Indocyanine Green ◽  
Fluorescence Imaging ◽  
Operative Time ◽  
Green Fluorescence ◽  
Indocyanine Green Fluorescence ◽  
Indocyanine Green Fluorescence Imaging ◽  
Bowel Perfusion ◽  
Totally Laparoscopic

Abstract Aim: To retrospectively evaluate the feasibility and safety of intraoperative assessment of bowel perfusion in totally laparoscopic surgery for colon cancer using indocyanine green fluorescence imaging (IGFI). Methods: From October 2017 to June 2019, consecutive patients with colon cancer who underwent totally laparoscopic surgery were enrolled retrospectively and grouped into the IGFI group (n=84) and control group (n=105). In the IGFI group, indocyanine green (ICG) was injected intravenously, and the bowel perfusion was observed using a fluorescence camera system prior to and after completion of the anastomosis. Results: The two groups were demographically comparable. The IGFI group exhibited a significantly shorter operative time (p=0.0374) while intraoperative blood loss did not significantly differ among the groups (p=0.062). In the IGFI group, average time to perfusion fluorescence was 48.4±14.0 s after ICG injection, and four patients (4.8%) were required to choose a more proximal point of resection due to the lack of adequate fluorescence at the point previously selected. There were no differences in terms of pathological outcomes, postoperative recovery and the postoperative complication rates between the groups (p＞0.05). Conclusion: IGFI shows promise as a safe and feasible tool to assess bowel perfusion during a totally laparoscopic surgery for colon cancer and may reduce the operative time.

Clinical outcomes of three-dimensional versus two-dimensional laparoscopic surgery for gastric cancer: A single center, prospective, randomized trial—An interim report.

2016 ◽  
Vol 34 (4_suppl) ◽  
pp. 53-53 ◽  
Author(s):  
Jian-Xian Lin ◽  
Changming Huang ◽  
Chaohui Zheng ◽  
Ping Li ◽  
Jianwei Xie ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Laparoscopic Surgery ◽  
Laparoscopic Gastrectomy ◽  
Three Dimensional ◽  
Operation Time ◽  
Phase Iii ◽  
Two Dimensional ◽  
Efficacy And Safety ◽  
Single Center ◽  
3D Laparoscopic Gastrectomy

53 Background: Laparoscopic surgery is more challenging compared with open surgery, in part because surgeons must operate in three-dimensional (3D) space through a two-dimensional (2D) projection on a monitor, which results in loss of depth perception. To counter this problem, 3D imaging for laparoscopic was developed. However, there is limited evidence regarding its efficacy and safety. We therefore conducted a phase III, single center, prospective, randomized study to validate the efficacy and safety of 3D laparoscopic gastrectomy for gastric cancer compared with 2D laparoscopic surgery. Methods: The eligible criteria were pathologically-proven adenocarcinoma, 18 to 75 years of age, no history of other malignant tumor, chemotherapy, or radiotherapy, and clinical stage T1-4aN0-3M0 with R0 resection. The primary end point was to determine whether there is a difference in operation time between the two groups. The morbidity and mortality were compared to evaluate the safety of this trial. Results: A total of 196 patients were randomized (97 cases in 3D Group; 99 cases in 2D Group) between January 1, 2015 and August 31, 2015. There were no significant differences between the two groups in clinicopathological characteristics. The mean number of retrieved lymph nodes was similar in the 3D and 2D groups (35.6±14.1 vs. 36.1±13.5 per case). The operation time was similar in 3D and 2D groups (183.6±34.1 vs. 180.0±37.2 min). The blood loss in 3D Group was 59.6±45.6 ml, which was less than that in 2D Group (69.9±62.4 ml) without statistically different. There were no significant differences in times to resumption of activities, first flatus, resumption of soft diet, and post-operative stay between the two groups (P > 0.05, respectively). The morbidity of the 3D and 2D groups were 21.6% (21/97) and 17.1% (17/99), respectively (P = 0.428). There was no patient died during the postoperative stay in both groups. Conclusions: 3D laparoscopic gastrectomy is a safe and feasible procedure for gastric cancer. However, compared with 2D group, there was no so much benefit from 3D laparoscopic gastrectomy for gastric cancer. Clinical trial information: NCT02327481.

scholarly journals Three-dimensional Versus Two-dimensional Laparoscopic Surgery for Colorectal Cancer: Systematic Review and Meta-analysis

In Vivo ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 11-21 ◽  
Author(s):  
GEORGE PANTALOS ◽  
DIMITRIOS PATSOURAS ◽  
ELEFTHERIOS SPARTALIS ◽  
DIMITRIOS DIMITROULIS ◽  
GERASIMOS TSOUROUFLIS ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Systematic Review ◽  
Laparoscopic Surgery ◽  
Meta Analysis ◽  
Three Dimensional ◽  
Two Dimensional
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