Three dimensional versus two dimensional imaging for laparoscopic cholecystectomy.
BACKGROUND
The benefits and harms of three dimensional imaging versus traditional two dimensional imaging for laparoscopic cholecystectomy are not known.


OBJECTIVE
To assess the benefits and harms of use of three dimensional systems versus two dimensional systems during laparoscopic cholecystectomy.


METHODS
We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, MEDLINE, EMBASE, and Science Citation Index Expanded until October 2010 for randomised clinical trials.


METHODS
Only randomised clinical trials, irrespective of language, blinding, or publication status were considered for the review.


METHODS
Two authors independently identified trials and independently extracted data. We intended to calculate the risk ratio (RR), mean difference (MD), or standardised mean difference (SMD) with 95% confidence intervals (CI) using both the fixed-effect and the random-effects models with RevMan 5 based on intention-to-treat analysis.


RESULTS
One trial randomised 60 patients to three dimensional laparoscopic cholecystectomy (n = 30) versus standard two dimensional laparoscopic cholecystectomy (n = 30). This trial was of high risk of bias. There were no post-operative complications or conversion to open cholecystectomy in either group. There was no significant difference in the operating time (MD -1.00 minute; 95% CI -17.77 to 15.77) or number of errors between the two groups.


CONCLUSIONS
Currently, there is no evidence that three dimensional image is superior to two dimensional image in laparoscopic cholecystectomy.
Department of Surgery, Royal Free Campus, UCL Medical School, 9th Floor, Royal Free Hospital, Pond Street, London, UK, NW3 2QG.
Kurinchi Selvan
KS
Gurusamy
Samir
S
Sahay
Brian R
BR
Davidson
D017081:Cholecystectomy, Laparoscopic / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000009:adverse effects / Q000379:methods*; D016032:Randomized Controlled Trials as Topic