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Purpose Immunonutrition has been used to prevent the complications after colorectal elective surgery. This systematic review aimed to analyze and assess the effect of immunonutrition on colorectal cancer patients who received elective surgery. Methods Three electronic databases (Medline, Embase, Cochrane) were used to search the latent studies which investigated the effects of enteral immunonutrition...
Due to the lack of surgical planning, the needle-insertion path planning still depends on the surgeon's operation experience and the reconstructed 3D operation environment in the robot-assisted liver tumor coagulation therapy system. So, the study of the surgical planning strategy is an important task to reduce the surgeon workload and improve the therapy efficiency and quality. To this end, according...
According to the real practice of hospital outpatient operating rooms, the problem of process and capacity planning is analyzed by considering the rule of balancing and increasing the resource utilization; based on queuing theory, this paper brings out the outpatient operating room process upswing plan and establishes simulation models; then, this paper puts forward the total cost objective function...
This paper proposed a needle insertion robotic surgery system for hepatic microwave coagulation of liver tumors. The system could compensate the influence caused by the patient's respiratory motion. The system includes a needle insertion robot, a surgical planning subsystem, a magnetic tracking device and a stereo vision system. In order to meet the fundamental requirement of the system, inserting...
This paper proposed a needle insertion robotic system for ultrasound guided hepatic microwave coagulation. The system includes a needle insertion robot, a pose tracking device and a surgical planning subsystem composed of pre-operative module and intra-operative module. One unique contribution of the system is real-time prediction of the microwave thermal field distribution generated by the needle's...
The goal of this paper is to develop a needle insertion robotic system for ultrasound-guided minimally invasive surgery, which is composed of a robot, a surgical planning subsystem and a pose tracking device. In the surgery procedure, the target coordinate should be transformed from one coordinate frame to another coordinate frame through point-based registration. The point-based registration using...
The goal of this paper is to develop a needle insertion robotic system for ultrasound-guided minimally invasive surgery, which is composed of a robot, a surgical planning subsystem and a pose tracking device. The system plays roles of assisting surgeon for inserting needle to the centre of target tumor leading to efficient tumor destruction. Compared to the conventional 2D ultrasound guided therapy,...
This paper proposed a needle insertion robotic system for ultrasound-guided hepatic microwave coagulation therapy, which is composed of a needle insertion robot, a surgical planning subsystem and a pose tracking device. The most important specification of the system is system accuracy. Firstly, the robotic system is introduced. Then, the 3D ultrasound planning subsystem is calibrated according to...
Ultrasound images have been employed in guiding clinical interventional therapy procedures for liver tumor. However, segmenting liver tumor in the ultrasound images presents a unique challenge because of the low-contrast objects in the noisy image. Snakes, or active contours have had limited success in such noisy and complex image. In this paper, an adaptive level set method is proposed, which combines...
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