Flexible right sized honing technology for fast engine finishing

The paper discusses a flexible honing technology by describing the new prototype machine with its specificity. Three original methods produced by the flexible honing prototype have been studied. A path combines the two contemporary methods of industrial honing: the helical slide honing at 135 ° at the bottom of the cylinder and the conventional honing at 45 ° on the upper part. This method of honing shows the effectiveness of specific motion tracking to remove traces of inversions. Circular trajectories with large radii can be traveled quickly without consuming too much energy. The high cutting speed promotes the removal of material thus saving time. Finally, the multi-circle paths can get original textures thus proving the feasibility of all patterns

IMPROVING RADIOTHERAPY WORKFLOW: EVALUATION AND IMPLEMENTATION OF DEEP LEARNING AUTO-SEGMENTATION IN A MULTI-USER ENVIRONMENT, AND DEVELOPMENT OF AUTOMATIC CONTOUR QUALITY ASSURANCE SYSTEM

Radiotherapy is a frequently used therapeutic modality for cancer patients. Accurately contouring of tumors and organs at risk (OARs) is critical for developing optimal treatment plans in radiotherapy, especially after the implementation of Intensity-modulated radiation therapy (IMRT) and Stereotactic Body Radiation Therapy (SBRT). The manual contouring process is time-consuming and suffers from inter-observer variations. However, manual contouring is often hindered by laborious clinical duties, leading to reduced effectiveness, and increased segmentation errors due to fatigue. Additionally, online adaptive radiation therapy(ART), which has been shown to benefit patient outcomes, places higher demands on contouring and quality assurance (QA) speed. Recently, deep learning auto-segmentation (DLAS) has emerged as an accurate tool for contouring in many anatomical sites. However, DLAS\u27s black-box nature has limited its widespread clinical implementation. Robust evaluations are required prior to the clinical implementation. In this thesis, we present our comprehensive validation approach for assessing the clinical acceptability of DLAS contours in the male pelvis region for automated prostate treatment planning. We then evaluated the DLAS model\u27s capacity for continuous improvement and generalizability and successfully adopted it in a multi-user environment. Additionally, we provided an implementation workflow for this software that can be used by other clinical users. Manual reviewing contour is a time-consuming process that is prone to errors and omissions, leading to dosimetric uncertainties and lower quality of radiation treatment. To assist with the manual contour review process, an automated contouring QA tool is necessary. We proposed a machine learning-based methodology for an automated contour quality assurance system that detects errors in manual contouring, using the precise DLAS contour as a reference. Moreover, we established a knowledge-based contour QA system that can localize and categorize contour errors for improved accuracy and efficiency. Overall, this dissertation provides a more comprehensive understanding of DLAS in a clinical multi-user environment, which will improve the quality and safety of the radiotherapy workflow

Stereotactic body radiotherapy for treatment of liver metastasis

В данной работе было изучено методологию планирования VMAT. Роль предварительной обработки топометрии, планирования лечения, планов контроля качества, и доставки лечения пяти пациентам с метастазами в печени в Томском Областном Онкологическом Центре.In this work was study the planning methodology of VMAT. the role of pre-treatment topometry, treatment planning, quality control plans, and delivery of treatment to five patients with liver metastases in the Tomsk Regional Oncology Center

Stereotactic body radiotherapy for treatment of liver metastasis

В данной работе было изучено методологию планирования VMAT. Роль предварительной обработки топометрии, планирования лечения, планов контроля качества, и доставки лечения пяти пациентам с метастазами в печени в Томском Областном Онкологическом Центре.In this work was study the planning methodology of VMAT. the role of pre-treatment topometry, treatment planning, quality control plans, and delivery of treatment to five patients with liver metastases in the Tomsk Regional Oncology Center