Application Of Three-dimensional Visualization Research Articles

Exploring the application and future outlook of Artificial intelligence in pancreatic cancer.

Pancreatic cancer, an exceptionally malignant tumor of the digestive system, presents a challenge due to its lack of typical early symptoms and highly invasive nature. The majority of pancreatic cancer patients are diagnosed when curative surgical resection is no longer possible, resulting in a poor overall prognosis. In recent years, the rapid progress of Artificial intelligence (AI) in the medical field has led to the extensive utilization of machine learning and deep learning as the prevailing approaches. Various models based on AI technology have been employed in the early screening, diagnosis, treatment, and prognostic prediction of pancreatic cancer patients. Furthermore, the development and application of three-dimensional visualization and augmented reality navigation techniques have also found their way into pancreatic cancer surgery. This article provides a concise summary of the current state of AI technology in pancreatic cancer and offers a promising outlook for its future applications.

Application of Ultrasound Virtual Reality in the Diagnosis and Treatment of Cardiovascular Diseases.

Cardiovascular disease is a common chronic disease in the medical field, which has a great impact on the health of Chinese residents (especially the elderly). At present, the effectiveness of the prevention and treatment of cardiovascular diseases in my country is not optimistic. Overall, the prevalence and mortality of CVD are still on the rise. The timely and effective detection and treatment of cardiovascular and cerebrovascular diseases are of great practical significance to improve the health of residents and to carry out prevention and treatment. This article aims to study the application of ultrasound-based virtual reality technology in the diagnosis and treatment of cardiovascular diseases to improve the efficiency and accuracy of the diagnosis of cardiovascular and cerebrovascular diseases by medical staff. The focus is on the application of feature attribute selection related algorithms and classification related algorithms in medical and health diagnosis systems, and a cardiovascular and cerebrovascular disease diagnosis system based on naive Bayes algorithm and improved genetic algorithm is designed and developed. The system builds a diagnostic model for cardiovascular and cerebrovascular diseases and diagnoses and displays the corresponding results based on the patient's examination data. This paper first puts forward the theoretical concepts of ultrasonic virtual reality technology, scientific computing visualization, genetic algorithm, naive Bayes algorithm, and surgery simulation system and describes them in detail. Then, we construct a three-dimensional ultrasonic virtual measurement system, from the collection and reconstruction of image data to the filtering and segmentation of image data, plus the application of three-dimensional visualization and virtual reality technology to construct a three-dimensional measurement system. The experimental results in this paper show that 10 isolated congenital heart disease models with atrial septal defect (ASD) established through the use of three-dimensional visualization and virtual reality technology measured the short diameter, long diameter, and area of the atrial septal defect in the left and right atria. Finally, a value of L less than 0.05 indicates that the statistics are meaningful, and a value of r generally greater than 0.9 indicates that the virtual measurement result is highly correlated with the real measurement result.

Advances in surgical treatment of ovarian cancer liver metastasis

Ovarian cancer (OC) is one of the most common gynecological malignancies with characteristics of insidious onset and liver is the most common solid metastatic organ. Surgical treatment for newly diagnosed advanced or recurrent ovarian cancer liver metastasis has become a research hotspot as good outcome of patients with liver metastasis from colorectal cancer or neuroendocrine tumor by surgical treatment. It was previously considered that such patients were advanced and unfavourable for surgical treatment. However, in recent years, with the advances in liver surgical techniques, the application of three-dimensional visualization and the rise of multidisciplinary diagnosis and treatment mode, the safety of surgery has been guaranteed and the prognosis has been improved. This article reviewed the advances in surgical treatment of ovarian cancer liver metastasis.

Research on 3D International River Visualization Simulation Based on Human-Computer Interaction

With the development of digitalization in various fields, the water conservancy field is gradually developing digital three-dimensional visualization research to promote the development of digital watershed construction. This paper deeply analyzes and discusses the theory and application of three-dimensional visualization of river water scenes and realizes an interactive visual simulation system based on virtual reality technology, which simulates simulation and operation management, which can greatly accelerate the data. The processing speed makes the huge data be effectively utilized to provide visual interaction means for numerical simulation and data analysis, improve the efficiency of numerical calculation, and realize human-computer interaction communication, so that people can observe the phenomena and laws that are difficult to observe by traditional methods. The rationality of the mathematical model is analyzed for effectiveness.

The Application of Three-Dimensional Visualization in Preoperative Evaluation of Portal Vein Invasion in Hilar Cholangiocarcinoma.

ObjectiveThis study aimed to investigate the use of three-dimensional visualization for preoperative evaluation of portal vein invasion in hilar cholangiocarcinoma (HCCA).MethodsThis recombination study for preoperative computerized tomography images was completed in 42 patients undergoing radical resection of HCCA combined with hepatectomy. Portal vein invasion with postoperative pathology was used as a gold standard to decide if the diagnosis was correct or not. We compared the sensitivity, specificity, positive predictive value, negative predictive value, and total correctness of radiologists and a three-dimensional (3D) visualization model for the assessment of tumor-caused portal vein invasion.ResultsThe findings for the estimation of portal vein invasion by radiologists based on CT images were as follows: sensitivity = 90.9%; specificity = 83.8%; positive predictive value = 66.7%; negative predictive value = 96.3%; and overall accuracy = 85.7%. The findings for estimation by the 3D visualization model were as follows: sensitivity = 90.9%; specificity = 96.8%; positive predictive value = 90.9%; negative predictive value = 96.8%; and overall accuracy = 90.5%.ConclusionThe positive predictive value of 3D visualization technology in the diagnosis of portal vein invasion is notably superior to that of subjective assessment by radiologists. This technique can thus play a significant role in preventing unnecessary resectioning of non-invaded portal veins and hepatectomy.

Preliminary application of three-dimensional visualization in interventional treatment of Budd-Chiari syndrome

Objective To analyze the application of three-dimensional visualization in interventional treatment of Budd-Chiari syndrome (BCS) with the hepatic vein occlusion type. Methods A retrospective study was conducted on 15 patients with BCS of the hepatic vein occlusion type who were admitted to the Affiliated Hospital of Xuzhou Medical University from January 2017 to June 2018. The study included 8 males and 7 females with a mean age of (36.7±14.4) years. All patients were examined with MRI enhanced scanning and the original MRI data of the DICOM format were extracted. The digital data were then extracted and reconstructed by the Mimics software to obtain a three-dimensional visualization model. The hepatic vein was recanalized under the guidance of the three-dimensional visualization model. Results The three-dimensional visualization model was successfully constructed. Of all the 15 three-dimensional visualization models, right hepatic vein ostial stenosis occurred in 4 patients and occlusion in 11 patients. The middle hepatic vein and the left hepatic vein formed a common trunk in 15 patients, and ostial stenosis and occlusion of the common trunk occurred in 3 and 12 patients, respectively. Communicating branches between the right and middle hepatic veins occurred in 6 patients. Accessory hepatic veins occurred in 3 of 15 patients, and the accessory hepatic vein ostium was stenosed in 3 patients. Communicating branches between the accessory hepatic vein and the right hepatic vein occurred in 2 patients, and communicating branches between the accessory hepatic vein and the middle hepatic vein occurred in 1 patient. All patients were treated successfully with interventional treatment without any complications. One, 2, and 3 hepatic veins were recanalized in 7, 5 and 3 patients, respectively. Conclusion The three-dimensional visualization was valuable in displaying the location, pattern and collateral vessels of the hepatic veins in BCS patients with the hepatic vein occlusion type. It was helpful for accurate preoperative assessment and to make individualized interventional treatment plans. Key words: Budd-Chiari syndrome; Hepatic vein; Imaging, three-dimensional; Interventional treatment

Application of three-dimensional visualization in pancreatic tumor: a pilot study

Objective: To study the value of three-dimensional(3D) visualization in the diagnosis and surgical treatment for pancreatic tumor. Methods: From June to September 2016, 26 patients with pancreatic tumors in Jinling Hospital, Medical School of Nanjing University were involved. The study included 26 patients(8 females and 18 males) with mean age of (57±12)years (ranging from 23 to 77 years). And there were 20 malignant tumors and 6 benign tumors. All of them were examined with abdominal thin slice CT scanning and the CT images were imported into 3D visualization system for 3D visualization. The main elements examined by 3D visualization included tumor shape, size, and location; distribution and morphology of the peripancreatic lymph node; the relationships among neoplasms, organs and blood vessels. Results: Among the 26 patients, there were 21 cases with pancreatic cancer, of which 15 cases successfully underwent standard pancreatectomy. All patients were operated underwent accurate assessment. The 3D model demonstrated the origination and bifurcations of blood vessels, and the relationships among neoplasms, organs and blood vessels efficiently. The 3D technique could facilitate to evaluate response of neiadjuvant chemotherapy in the pancreatic cancer patients (n=5).3D reconstruction could detect the lymph-node metastases accurately (n=12) in patients with pancreatic cancer. 3D reconstruction were applied to evaluate the the size and range of tumor on 5 cases. Conclusions: 3D reconstruction allows stereoscopic identification of the spatial relationships between physiologic and pathologic structures.The 3D technique could facilitate to evaluate distribution and morphology of the peripancreatic lymph node, and to evaluate the relationships among neoplasms, organs and blood vessels.

Clinical application ofthree-dimensional visualization technology in middle pancreatectomy

：Objective To evaluatethe clinical effect of three-dimensional visualization technology in middle pancreatectomy(MP). Methods The original image data of 64-slices piral CT were obtained from 3 patientswith tumor in the neck or body of the pancreas. Data were impoted in the medical imageproceeding system (MIPS) which was designed by us. Then pancrea, pancreatic tumor,vascular system and other organs around the pancrease were three-dimensionallyreconstructed. By observing the spatial anatomical relationship between tumor andsurrounding organs or blood vessels, surgical approach was designed to guide operation.Results Using MIPS, the pancreas, tumos, surrounding organs and blood vessels in 3patients were three-dimensionally reconstructed successfully, and these 3D pictures couldclearly show the spatial anatomy of tumor and surrounding organs by visualizationtechniques. According to the results of three-dimensional reconstruction, two patientswere performed middle pancreatectomy successfully with open operation, and one patient wasperformed laparoscopic middle pancreatectomy successfully. No postoperative complicationssuch as bleeding, pancreatic leakage or diabetes were observed. ConclusionThree-dimensional reconstruction and visualization technology have great potential valuesfor designing individualized pancreatic surgery, and it can further expand to applicationfor other abdominal surgery.

Application of three-dimensional visulization in simulation of geographical landscape evolvement

The value of application of three-dimensional visualization and animation technique in dynamic simulation of geographical landscape formation is analyzed and, in particular, how to simulate the formation and evolvement of geographical landscape in temporal dimension is discussed thoroughly. Based on various modeling tools in 3DS MAX and original DEM data of the study area acquired from topographic map, real three-dimensional terrain model is generated by using the method of three-dimensional mesh approximation through DEM interpolating and surface modeling, which leads to the realization of the dynamic visualization and simulation of volcanic landscape, formation and evolvement. Furthermore, the dynamic three-dimensional visual virtual scenery of the formation and evolvement of the volcano in the Changbai Mountains of Jilin, China, is constructed. The applicability, potential, and corresponding technique of using 3DS MAX to dynamically simulate the formation of geographical landscape are expatiated.