A Modeling System of 3-Dimensional Blood Vessel Configuration for CFD Analysis

2000 ◽  
pp. 43-46
Author(s):  
Makoto Misawa ◽  
Yusuke Kimura ◽  
Hao Liu ◽  
Takami Yamaguchi
Keyword(s):  
Blood Vessel ◽  
Cfd Analysis ◽  
3 Dimensional

scholarly journals Preoperative Evaluation of Blood Vessel Anatomy Using 3-Dimensional Computed Tomography for Laparoscopic Surgery of Transverse Colon Cancer

2019 ◽  
Vol 103 (1-2) ◽  
pp. 15-20
Author(s):  
Tetsuo Ishizaki ◽  
Kenji Katsumata ◽  
Masayuki Hisada ◽  
Masanobu Enomoto ◽  
Takaaki Matsudo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Blood Vessel ◽  
Transverse Colon ◽  
Resection Margin ◽  
Transverse Colon Cancer ◽  
3D Ct ◽  
3 Dimensional ◽  
Vessel Anatomy

This study describes the efficacy of the evaluation of blood vessel anatomy by 3-dimensional computed tomography (3D-CT) for laparoscopic surgery for transverse colon cancer (TCC). A total of 102 patients with TCC were examined by preoperative 3D-CT to clarify their blood vessel anatomy at Tokyo Medical University Hospital between January 2010 and December 2015, before undergoing laparoscopic surgery using the obtained 3D-CT data. Regarding blood vessel variation, the middle colic artery (MCA) was present in all patients (100%). The common duct type was observed in 89 patients (87.3%), and a type of branch separate from the superior mesenteric artery was observed in 13 patients (12.7%). The accessory MCA was present in 25 patients (24.5%). The middle colic vein was present in all patients (100%), and it drained into the following vessels: the superior mesenteric vein, gastrocolic trunk, first jejunal vein, and inferior mesenteric vein [67 (65.8%), 25 (24.5%) 8 (7.8%), and 2 (1.9%) patients, respectively]. Regarding the surgical outcome, the bleeding volume was 43 g, the operative time was 218 minutes, the number of harvested lymph nodes was 21, the proximal resection margin was 164 mm, the distal resection margin was 105 mm, and the length of postoperative hospital stay was 10 days. Although complicated variations and anomalies in the MCA and the contiguous veins were observed, preoperative 3D-CT will be useful for surgeons performing laparoscopic surgery on patients with TCC.

CFD Analysis of a Continuous Inkjet Print Head for Direct Write Fabrication

2007 ◽  
Author(s):  
Salil Desai ◽  
Michael Lovell
Keyword(s):  
Dimensional Space ◽  
Fluid Pressure ◽  
Harsh Environments ◽  
Drop Formation ◽  
Experimental Setup ◽  
Direct Write ◽  
Cfd Analysis ◽  
Cfd Model ◽  
3 Dimensional ◽  
Miniaturized Devices

This paper investigates the fluid generation mechanism in a modified Continuous Inkjet Print (CIJ) method. The CIJ technique is utilized to deposit a variety of conductive nano particulate materials for building miniaturized devices that can sustain harsh environments. These include devices and structures that can sustain high temperature and humidity applications. Given the complex drop formation mechanism a CFD model is developed that is further validated using an ultrahigh speed photography experimental setup. Various input parameters such as frequency, voltage and fluid pressure can be tuned using the model for different fluid types to obtain an optimal drop formation. These findings can be useful for the fabrication of freeform miniaturized devices in 3 dimensional space.

A precision modeling system of blood vessel 3-dimensional configration for CFD alalysis

2000 ◽  
Vol 2000.1 (0) ◽  
pp. 259-260
Author(s):  
Yusuke KIMURA ◽  
Daisuke UJIHARA ◽  
Takami YAMAGUCHI
Keyword(s):  
Blood Vessel ◽  
3 Dimensional

A Recognition Method of Lung Nodule Shadows in X-Ray CT Images Using 3D Object Models

2003 ◽  
Vol 03 (04) ◽  
pp. 533-545 ◽  
Author(s):  
Hotaka Takizawa ◽  
Kanae Shigemoto ◽  
Shinji Yamamoto ◽  
Tohru Matsumoto ◽  
Yukio Tateno ◽  
...  
Keyword(s):  
Blood Vessel ◽  
Lung Nodule ◽  
Ct Images ◽  
Recognition Method ◽  
X Ray ◽  
3D Object ◽  
3 Dimensional ◽  
Positive Ratio ◽  
False Positive Ratio ◽  
Object Models

In this paper, we describe a recognition method of lung nodule shadows in X-ray CT images using 3-dimensional nodule and blood vessel models. From these 3D object models, artificial CT images are generated as templates. The templates are then applied to input images which comprise of suspicious shadows. If any parameters of the suspicious shadow matches a nodule template rather than any blood vessel template, then it is determined to be abnormal. Otherwise, it is determined to be normal. By applying our new method to the actual lung CT images of 38 patients, the false positive ratio is reduced to 4.31 [shadow/patient] with the sensitivity exceeding 95%.

scholarly journals Evaluation of Seabed Stability and Scour Control Around Subsea Gravity Protection Structures

2010 ◽  
Author(s):  
Richard J. S. Whitehouse ◽  
Carlos Lam ◽  
Stephen Richardson ◽  
Peter Keel
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
North Sea ◽  
Cfd Analysis ◽  
Cfd Model ◽  
3 Dimensional ◽  
Computational Fluid Dynamics Cfd ◽  
The Uk ◽  
Study Application

Results from an advanced 3-dimensional Computational Fluid Dynamics (CFD) model have proven to form an effective basis on which to design stable and scour resistant subsea structures in areas of seabed which are prone to scouring. A case study application from the UK sector of the southern North Sea is presented to demonstrate the benefits of the CFD analysis.

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