Experimental Model for Shear Stress Measurement in Vascular Circulation by Micro Particle Image Velocimetry
スポンサーリンク
概要
- 論文の詳細を見る
The present study investigated the basic architectonics of a micro particle image velocimetry (PIV) system and measured shear stress in a model of hepatic microcirculation for the purpose of understanding mechanical stress in small-for-size graft liver transplantation. The flow velocity was measured using a micro PIV system in a straight confluence, with bifurcation channels of the hepatic sinusoid model made of a clear acrylics that was 300μm in width and 100μm in height. In the micro PIV system, two strobes as a light source illuminated an object from underneath, and its visual flow images were recorded into a computer using a high-resolution CCD camera. The flow visualization was performed by adding distilled water to proper nylon tracer particles of 1μm in diameter (specific gravity: 1.02). The experimental velocity profile measured by this micro PIV system was in good accordance with both the results obtained using the three-dimensional Navier-Strokes equations on a square tube and Hagen-Poiseulle equations on a circular tube, which confirmed the suitability of this measurement system. The flow velocity after both confluence and branching in the model of hepatic circulation very rapidly became similar to that of the straight flow. The wall shear stress was calculated using an equation of τ=μヤu/dy, based on the measured mean velocity distribution. The measurement data of shear stress in the straight flow was accurate with an error of 6%. This micro PIV system had sufficient reliability for measuring the shear stress in hepatic microcirculation and serve as a new instrument for understanding pathological conditions in hepatic microcirculation in small-for-size liver transplantation.
- 新潟大学の論文
著者
-
Hatakeyama K
Division Of Digestive And General Surgery Niigata University Graduate School Of Medical And Dental S
-
MARUYAMA Satoshi
Digestive and General Surgery, Graduate School of Medical and Dental Sciences, Niigata University
-
OHTA Tamaki
Department of Pathology
-
Sato Yoshinobu
Division Of Digestive And General Surgery Department Of Surgery Niigata University Graduate School O
-
Fujisawa Nobuyuki
Department Of Mechanical And Production Engineering Niigata University
-
Sato Y
Niigata Univ. School Of Medicine Jpn
-
Hatakeyama K
Division Of Digestive And General Surgery Department Of Surgery Niigata University Graduate School O
-
Hatakeyama K
Niigata Univ. Niigata Jpn
-
Hatakeyama Katsuyoshi
Division Of Digestive And General Surgery Graduate School Of Medical And Dental Sciences Niigata Uni
-
Hatakeyama Katsuyoshi
Division Of Digestive And General Surgery Department Of Regenerative And Transplant Medicine Graduat
-
Sato Yoshinobu
Division Of Digestive And General Surgery Graduate School Of Medical And Dental Sciences Niigata Uni
-
Hatakeyama Katsuyoshi
The First Department Of Surgery Niigata University School Of Medicine
-
Hatakeyama Katsuyoshi
Division Of Digestive And General Surgery Department Of Regeneration And Transplant Medicine Niigata
関連論文
- Accurate Thickness Measurement of Two Adjacent Sheet Structures in CT Images(Advanced Image Technology)
- A novel automatic liver surface registration method using spherical harmonics (パターン認識・メディア理解)
- A novel automatic liver surface registration method using spherical harmonics (画像工学)
- A novel automatic liver surface registration method using spherical harmonics (医用画像)
- Multiscale vessel tracking and quantification from isotropic CT volume data(Joint Session 2)
- A New Strategy for Lung Cancer Treatment : Impact of Real-Time Navigation on Thoracoscopic Surgery
- The Protective Role of Kupffer Cells in the Ischemia-Reperfused Rat Liver
- The Role of Kupffer Cells in Liver Regeneration
- Immunolocalization of Aquaporin-8 in Rat Digestive Organs and Testis
- Immunolocalization of Aquaporin-9 in Rat Hepatocytes and Leydig Cells
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (パターン認識・メディア理解)
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (画像工学)
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (医用画像)
- A rule based technique for liver segmentation in CT data (医用画像)
- Automated Determination of the Liver Boundary in CT Data Based on Anatomical Knowledge and Level Set Method
- Automated visualization of femoral and acetabular cartilages in MR images of the hip (医用画像)
- Automated Segmentation of Acetabular Cartilage in MR images of the Hip(Joint Session 1)
- Analyses of p53 Overexpression, Aberrant β-Catenin Expression, Microsatellite Instability, and K-ras Mutation in Intrahepatic Cholangiocarcinoma with and without Hepatolithiasis
- Present status and perspectives of bioartificial kidneys
- Noninvasive method using multidetector CT for calculating the relative blood supply ratio of duplicated renal arteries in renal donors
- Gastric Tube Interposition for Corrosive Esophagitis Associated with Pyloric Stenosis
- Gastrojejunostomy as Induction Treatment for S-1-based Chemotherapy in Patients with Incurable Gastric Cancer
- Postoperative reorganization of gastric pacemaker activity in patients after an extended period following distal gastrectomy
- mRNA Expression of Vascular Endothelial Growth Factor-C and -D in Esophageal Squamous Cell Carcinoma
- Clinical Significance of VEGF and dThdPase Expressions in Squamous Cell Carcinoma of the Esophagus
- PIV Measurement of Velocity Field in a Spray Combustor
- Clinicopathologic characteristics of clinically relevant cytomegalovirus infection in inflammatory bowel disease
- Toxic megacolon associated with cytomegalovirus infection in ulcerative colitis
- Multiple-sectioning Study to Establish a Standardized Immunohistochemical Method for Detecting Isolated Tumor Cells in Lymph Nodes of Patients with Colorectal Cancer
- Celiac axis stenosis in pancreaticoduodenectomy
- Afferent Loop Obstruction : A Case Report
- Spontaneous Esophageal Rupture Successfully Treated by Conservative Therapy : Report of Two Cases
- Definition and Histogenesis of Ovarian-type Stroma in Mucinous Cystic Neoplasms of the Pancreas
- MUC1, MUC2, and MUC5AC Mucin Core Protein Expression in Ulcerative Colitis-associated Colorectal Carcinoma
- Right hepatectomy for pyogenic liver abscesses with true multiloculation
- The respiratory motion analysis of the rib using 3-D images
- Sustained response to interferon-α plus ribavirin therapy for chronic hepatitis C is closely associated with increased dynamism of intrahepatic natural killer and natural killer T cells
- Expression of heme oxygenase-1 in rat ontogeny
- Model-based Measurement of the Articular Cartilage Thickness in the Hip Joint
- Intrahepatic Cholangiocarcinoma Arising 34 Years After Excision of a Type IV-A Congenital Choledochal Cyst : Report of a Case
- Splenic-intrahepatic left portal shunt in an adult patient with extrahepatic portal vein obstruction without recurrence after pancreaticoduodenectomy
- VSY-4-3 Video-Assisted Living Donor Hemihepatectomy through a 12-cm Laparotomy in LRLT
- Management of Major Portosystemic Shunting in Small-for-Size Adult Living-Related Donor Liver Transplantation with a Left-Sided Graft Liver
- 5-Fluorouracil cardiotoxicity induced by alpha-fluoro-beta-alanine
- Increased risk of cholelithiasis after esophagectomy
- Hemangiopericytoma Arising in the Greater Omentum : Report of a Case
- Successful Resection of Metachronous Liver Metastasis from α-Fetoprotein-Producing Gastric Cancer: Report of a Case
- Ischemic Stricture of the Rectosigmoid Colon Caused by Division of the Superior Rectal Artery Below Sudeck's Point During Sigmoidectomy: Report of a Case
- Hepatocellular Carcinoma Associated with Precirrhotic Primary Biliary Cirrhosis Successfully Treated by a Right Hepatic Lobectomy : Report of a Case
- Simultaneous development of Crohn's disease and myelodysplastic syndrome progressing to acute myelocytic leukemia in a patient with a normal karyotype
- Conservative Management of Idiopathic Pneumoperitoneum Masquerading as Peritonitis : Report of a Case
- Blunt Pancreatic Trauma with Main Pancreatic Duct Disruption Managed Successfully with Total Parenteral Nutrition : Report of a Case
- SUCCESSFUL ENDOSCOPIC THERAPY OF SUPERFICIAL ESOPHAGEAL CANCER ON VARICES IN A PATIENT WITH ALCOHOLIC LIVER CIRRHOSIS
- Local differences in electrogastrographic indices associated with total gastrectomy, total colectomy, distal gastrectomy and colonic replacement
- Automatic teeth recognition in multi-slice CT images (医用画像)
- Overexpression of p53 Protein in Hepatocellular Carcinoma : ItsDefinition and Correlation with Viral Infection
- The D4Mit12 locus on mouse chromosome 4 provides susceptibility to both γ-ray-induced and N-methyl-N nitrosourea-induced thymic lymphomas
- Successful Inokuchi Shunt Operation for Early Gastric Cancer andConcomitant Esophagogastric Varices: A Case Report
- The Majority of Lymphocytes in the Bone Marrow, Thymus and Extrathymic T Cells in the Liver Are Generated In Situ from Their Own Preexisting Precursors
- 3D Imaging of Intraductal Spread of Breast Cancer and Its Clinical Application for Navigation Surgery
- Orientation Space Filtering for Multiple Orientation Line Segmentation
- 完全直腸脱として発見されたS状結腸癌の1例
- Ischemic Colitis Arising in Watershed Areas of the Colonic Blood Supply: A Report of Two Cases
- Management of patients with pregnancy-associated gastric cancer in Japan : a mini-review
- Role of Heme Oxygenase-1 and Kupffer Cells in the Production of Bilirubin in the Rat Liver
- Early Gastric Cancer Manifested as Brain Metastasis: Report of a Case
- Bile Peritonitis Due to a Spontaneous Perforation of the Common Bile Duct : Report of a Case
- 1 Proliferation index as a cellular marker of metastatic potential and prognosis in colorectal carcinomas
- Gastric Submucosal Hematoma and Mucosal Rupture with Ehlers-Danlos Syndrome : A Case Report
- A Single-stage Operation for Abdominal Aortic Aneurysm with Concomitant Colorectal Carcinoma
- Hyperthyroidism in Association with Ulcerative Colitis : A Case Report
- Motor and electrogastrographic activity of the gastric tube formed after esophagectomy
- Villous tumor of the rectum that started secreting watery fluid after colectomy
- Electrogastrographic activity in patients who received proximal gastrectomy plus jejunal interposition or total gastrectomy plus jejunal interposition
- Spectral analysis of colonic intraluminal pressure in patients who received a colonic replacement following radical esophagectomy
- Accuracy of feature-based 2D/3D registration for analyzing normal knee kinematics using X-ray fluoroscopy and CT images
- Immunohistochemical staining for P1 and P2 promoter-driven hepatocyte nuclear factor-4α may complement mucin phenotype of differentiated-type early gastric carcinoma
- Bowel Perforation Caused by Silicone Drains : A Report of Two Cases
- Dynamics of Aquaporin 1 and Aquaporin 8 in the Pancreas : An Experimental Study with a Caerulein-induced Pancreatitis Model
- Participation of NK1.1^+ T Cells in the Rejection of Ipr αβT Cells When Bone Marrow Cells of Ipr Mice Are Transplanted into B6 Mice
- Key Factors Influencing Bowel Function After Ileal W-Pouch Anal Anastomosis : A Spectral Analysis of W-Pouch Motor Activity
- Clinicopathological analysis of CD133^+ and NCAM^+ human hepatic stem/progenitor cells in damaged livers and hepatocellular carcinomas
- Topographical Electrogastrograms After Radical Esophagectomy with Colonic Replacement
- Omental Delivery of Prostaglandin E_1 Effectively Increases Portal Venous Blood Flow in 66% - Hepatectomized Rats
- Enhancement of Portal Blood Flow by Ursodesoxycholic Acid in Partially Hepatectomized Rats
- Interstitial pneumonia arising in a patient treated with oxaliplatin, 5-fluorouracil, and, leucovorin (FOLFOX)
- Successful treatment of gallbladder carcinoma producing alpha-fetoprotein with segmental adenomyomatosis
- Sympathetic Control of Portal Circulation under Partial Hepatectomy in Rats
- Allelic Losses in Mouse Skin Tumors Induced by γ-Irradiation of p53 Heterozygotes
- Prior Administration of Prostaglandin E_1 Enhances the Indocyanine Green Disappearance Rate Associated with Liver Ischemia in Rats
- Experimental Model for Shear Stress Measurement in Vascular Circulation by Micro Particle Image Velocimetry
- Measurement of Aerodynamic Noise and Unsteady Flow Field around a Symmetrical Airfoil
- Visualization and Color Image Processing of Flow Mixing in an Air Conditioning Unit for Automobiles
- Diagnosis of ischemic small bowel disease by measurement of serum intestinal fatty acid-binding protein in patients with acute abdomen : a multicenter, observer-blinded validation study
- Detection of Multiple Orientation Edge Using Orientation Space Filtering
- Chronic Superior Mesenteric Venous Thrombosis Revealed by Diabetic Ketonuria and Bacteremia
- Centrifugal instability of turbulent boundary layers along concave surfaces.
- Sclerosing encapsulating peritonitis in two patients with liver cirrhosis
- Japanese case of Budd-Chiari syndrome due to hepatic vein thrombosis successfully treated with liver transplantation
- Successful laparoscopic division of a patent ductus venosus : report of a case