OBJECTIVETo study the two-dimensional (2D) image segmentation, three-dimensional (3D) reconstruction and virtual surgery of cholecystectomy based on the 2D image data of the liver, biliary track and cholecystolithiasis obtained by 64-slice spiral CT.

METHODSThe image data of the liver, biliary track and cholecystolithiasis were obtained by 64-slice spiral CT scanning. Segmentation and automatic extraction of the images were performed using auto-adapting region growing algorithm. 3D reconstruction of the segmented data was carried out using MIMICS10.0 and self-designed software, and the data of the 3D model of the liver with the billiary tract were imported into FreeForm Modeling System for registration and smoothing. Virtual surgery of cholecystotomy for calculus removal and cholecystectomy were performed with Phantom.

RESULTSThe auto-adapting region growing algorithm allowed rapid image segmentation, and the 3D model of the liver based on the segmentation data clearly displayed vivid 3D structures of the liver. Virtual operations of cholecystectomy could be performed in the FreeForm Modeling System.

CONCLUSIONThe algorithm we proposed can correctly and rapidly complete image segmentation and 3D reconstruction of cholecystolithiasis from the data 64-slice spiral CT, and allows virtual operations on the gallbladder.

Cholecystectomy ; Cholecystolithiasis ; diagnostic imaging ; surgery ; Cholecystostomy ; Computer Simulation ; Computer-Assisted Instruction ; methods ; Humans ; Imaging, Three-Dimensional ; methods ; Surgery, Computer-Assisted ; methods ; Tomography, Spiral Computed ; User-Computer Interface

BACKGROUND: Bile cultures have been used to diagnose and predict the prognosis of acute cholecystitis (AC). As the standard treatment for AC has changed, the appropriate timing and clinical usefulness of bile cultures should be reevaluated. We analyzed the incidence of positive bile cultures in cholecystostomy and cholecystectomy, and attempted to see if a positive bile culture is related to the laboratory and imaging parameters and postoperative infections. METHODS: Included in the study were 86 patients with AC who underwent percutaneous cholecystostomy (PC) and then laparoscopic cholecystectomy (LC). We performed hematologic, biochemical, and radiological analyses at admission and bile cultures with each surgical procedure. The patients were followed for two months for postoperative infections. RESULTS: Bile cultures were positive in 40.7% of the patients at PC, significantly higher than at LC (12.8%). The group with positive cultures showed a higher median age and elevated levels of alkaline phosphatase (ALP) and total bilirubin (TB) than the group with negative cultures. Univariate analysis identified three preoperative factors as predictors of positive bile cultures: age (>55 yr), ALP (>100 IU/L) and TB (>1.2 mg/dL). Infectious complications after LC were mild and the incidence of postoperative infections was not different between the groups. CONCLUSIONS: The sensitivity of bile cultures is low for diagnosing AC, and the adequate timing of bile cultures is at PC, rather than LC. An old age and factors (ALP & TB) manifesting an advanced stage of bile stasis are associated with positive bile cultures. No correlation was found between positive bile cultures and postoperative infections.
Adult ; Aged ; Aged, 80 and over ; Bacterial Infections/*diagnosis ; Bile/*microbiology ; *Cholecystectomy, Laparoscopic/methods ; Cholecystitis, Acute/complications/*surgery ; *Cholecystostomy/methods ; Culture Techniques ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Postoperative Complications/*diagnosis ; Predictive Value of Tests

BACKGROUND: Bile cultures have been used to diagnose and predict the prognosis of acute cholecystitis (AC). As the standard treatment for AC has changed, the appropriate timing and clinical usefulness of bile cultures should be reevaluated. We analyzed the incidence of positive bile cultures in cholecystostomy and cholecystectomy, and attempted to see if a positive bile culture is related to the laboratory and imaging parameters and postoperative infections. METHODS: Included in the study were 86 patients with AC who underwent percutaneous cholecystostomy (PC) and then laparoscopic cholecystectomy (LC). We performed hematologic, biochemical, and radiological analyses at admission and bile cultures with each surgical procedure. The patients were followed for two months for postoperative infections. RESULTS: Bile cultures were positive in 40.7% of the patients at PC, significantly higher than at LC (12.8%). The group with positive cultures showed a higher median age and elevated levels of alkaline phosphatase (ALP) and total bilirubin (TB) than the group with negative cultures. Univariate analysis identified three preoperative factors as predictors of positive bile cultures: age (>55 yr), ALP (>100 IU/L) and TB (>1.2 mg/dL). Infectious complications after LC were mild and the incidence of postoperative infections was not different between the groups. CONCLUSIONS: The sensitivity of bile cultures is low for diagnosing AC, and the adequate timing of bile cultures is at PC, rather than LC. An old age and factors (ALP & TB) manifesting an advanced stage of bile stasis are associated with positive bile cultures. No correlation was found between positive bile cultures and postoperative infections.
Adult ; Aged ; Aged, 80 and over ; Bacterial Infections/*diagnosis ; Bile/*microbiology ; *Cholecystectomy, Laparoscopic/methods ; Cholecystitis, Acute/complications/*surgery ; *Cholecystostomy/methods ; Culture Techniques ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Postoperative Complications/*diagnosis ; Predictive Value of Tests

Hepatobiliary interventional procedures are most important and commonly practiced procedures in Korea. These procedures comprise about 60~80% of procedures in interventional radiology. We can do percutaneous transhepatic biliary drainage(PTBD), percutaneous cholecystostomy in patients with bile duct and cystic duct obstruction. These procedures prevent high-risk operation and are performed on an emergency basis in some patients with bile infection. A residual biliary stone after operation can be removed with basket and shock wave without reoperation and multiple intrahepatic stones also can be removed through the PTBD tract without operation. Transarterial chemoembolization is a very effective method and has the widest range of indications in treatment of hepatocellular carcinoma(HCC). Also we can treat HCC percutaneously with local injection of absolute ethanol and radiofrequency ablation. Transjugular intrahepatic portosystemic shunt(TIPS) has replaced surgical shunt operation in variceal bleeding in liver cirrhosis. Resection of a large volume of liver is a very safe method after portal vein embolization of a lobe to be resected due to hypertrophy of the remaining lobes of the liver. Metallic stenting of kinking vessels always shows excellent results and we can employ this technique for hepatic vein and portal vein kinking after living-donor liver transplantation.
Bile ; Bile Ducts ; Catheter Ablation ; Cholecystostomy ; Cystic Duct ; Emergencies ; Esophageal and Gastric Varices ; Ethanol ; Hepatic Veins ; Humans ; Hypertrophy ; Korea ; Liver ; Liver Cirrhosis ; Liver Transplantation ; Methods ; Portal Vein ; Radiology, Interventional ; Reoperation ; Shock ; Stents

Twenty bilio-enteric anastomoses were performed or managed from May 1990 to December 1992. Recurrent pyogenic cholangitis (RPC) and pancreatic cancer were the commonest conditions which required drainage procedures. Roux-en-Y hepatico-jejunostomy (RHJ) was performed in 9 patients, 4 for RPC, one for pancreatic cancer, another for a cholangiocarcinoma, 2 following excision of choledochal cyst and one hepatico-jejunostomy was part of a Whipple reconstruction. Roux-en-Y side to side choledocho-jejunostomy (CDJ) was performed in one patient. Choledocho-duodenostomy (CDD) was performed in 6, 4 for obstructive jaundice due to choledocholithiasis, one for RPC and one in a choledochal cyst. One patient operated elsewhere presented with complications after a CDD. Palliative cholecysto-jejunostomy (CYJ) was carried out in 4 patients with pancreatic malignancy. All benign conditions were treated by hepatico-jejunostomy and choledocho-duodenostomy, while three patients with malignant conditions were treated by hepatico-jejunostomy. Permanent subcutaneous access loops were provided when recurrent problems were anticipated, 4 in RPC and one after subtotal resection of a cholangiocarcinoma. Based on this study, we found Roux-en-Y hepatico-jejunostomy a versatile drainage procedure, which was useful in both benign and malignant diseases.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Anastomosis, Roux-en-Y ; Anastomosis, Surgical ; methods ; Child ; Cholecystostomy ; Choledochostomy ; Common Bile Duct ; surgery ; Common Bile Duct Diseases ; surgery ; Female ; Follow-Up Studies ; Hepatic Duct, Common ; surgery ; Humans ; Intestine, Small ; surgery ; Male ; Middle Aged ; Pancreatic Neoplasms ; surgery ; Retrospective Studies ; Treatment Outcome