Artificial Intelligence-Assisted Visual Sensing Technology under Duodenoscopy of Gallbladder Stones

Objective. This study is aimed at exploring the application effect of duodenoscopy assisted by visual sensing technology based on convolutional neural network (CNN) segmentation algorithm in the diagnosis and treatment of gallbladder stones, so as to provide safer and more effective treatment methods for patients with gallstones. Methods. 188 patients with gallstones and choledocholithiasis who were admitted to our hospital from January 2016 to April 2021 were selected as the research objects. Based on whether the patients were willing to use AI-assisted visual sensing technology during the treatment process, all patients were divided into two groups, namely, the AI group and the conventional group. Various surgical indicators of patients in two groups were compared. Results. The precision, recall, and mean intersection ratio of the M-Unet-based segmentation algorithm were 94.56%, 96.56%, and 98.92%, respectively. In the AI group, the operation time ( 2.74 ± 0.45 h ), postoperative drainage tube placement time ( 4.31 ± 1.15 d ), time required for recovery of gastrointestinal function ( 1.74 ± 0.54 d ), time required to get out of bed ( 1.14 ± 0.55 h ), and time spent in hospital ( 9.94 ± 1.45 d ) were all shorter compared with those in the conventional group, which were 3.21 ± 0.32 h , 12.14 ± 2.98 d , 2.89 ± 0.67 d , 2.09 ± 0.87 h , and 14.14 ± 1.15 h , showing statistical differences ( P < 0.05 ); the intraoperative blood loss ( 79.74 ± 6.45 mL ) and residual status of stones (0%) in the AI group were much lower than those in the conventional group ( P < 0.05 ). In addition, the incidence of complications (10.26%) and the indicators of postoperative gallbladder function of patients in the AI group were lower greatly than those in the conventional group ( P < 0.05 ). Conclusion. The visual sensing technology assisted by the CNN algorithm showed a good effect on image processing, and endoscopic technology can effectively improve the treatment effect of gallbladder stones combined with choledocholithiasis with the aid of this technology. Therefore, the conclusion in this study proved that visual sensing technology based on intelligent algorithms showed a good future in the medical field.

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Efficacy evaluation of three-dimensional printing assisted osteotomy guide plate in accurate osteotomy of adolescent cubitus varus deformity

Journal of Orthopaedic Surgery and Research ◽

10.1186/s13018-019-1403-7 ◽

2019 ◽

Vol 14 (1) ◽

Cited By ~ 3

Author(s):

Yuan-Wei Zhang ◽

Xin Xiao ◽

Wen-Cheng Gao ◽

Yan Xiao ◽

Su-Li Zhang ◽

...

Keyword(s):

3D Printing ◽

Blood Loss ◽

Three Dimensional ◽

Operation Time ◽

Varus Deformity ◽

Conventional Group ◽

Intraoperative Blood Loss ◽

Cubitus Varus ◽

Guide Plate ◽

Significant Difference

Abstract Background This present study is aimed to retrospectively assess the efficacy of three-dimensional (3D) printing assisted osteotomy guide plate in accurate osteotomy of adolescent cubitus varus deformity. Material and methods Twenty-five patients (15 males and 10 females) with the cubitus varus deformity from June 2014 to December 2017 were included in this study and were enrolled into the conventional group (n = 11) and 3D printing group (n = 14) according to the different surgical approaches. The operation time, intraoperative blood loss, osteotomy degrees, osteotomy end union time, and postoperative complications between the two groups were observed and recorded. Results Compared with the conventional group, the 3D printing group has the advantages of shorter operation time, less intraoperative blood loss, higher rate of excellent correction, and higher rate of the parents’ excellent satisfaction with appearance after deformity correction (P < 0.001, P < 0.001, P = 0.019, P = 0.023). Nevertheless, no significant difference was presented in postoperative carrying angle of the deformed side and total complication rate between the two groups (P = 0.626, P = 0.371). Conclusions The operation assisted by 3D printing osteotomy guide plate to correct the adolescent cubitus varus deformity is feasible and effective, which might be an optional approach to promote the accurate osteotomy and optimize the efficacy.

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Different characteristics of infants diagnosed with congenital choledochal malformation prenatally or postnatally

Scientific Reports ◽

10.1038/s41598-020-79569-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Wei Chen ◽

Jia Geng ◽

Ya-lan Tan ◽

Lian Zhao ◽

Hui-hui Jia ◽

...

Keyword(s):

Histopathological Examination ◽

Fibrous Tissue ◽

Operation Time ◽

Normal Diet ◽

Treatment Regimens ◽

Total Length ◽

Time Required ◽

Different Characteristics ◽

Length Of Hospitalization ◽

Choledochal Malformation

AbstractThe general condition, clinical and pathological characteristics, and treatment regimens of patients prenatally and postnatally diagnosed with congenital choledochal malformation (CM) were analyzed in order to investigate the clinical significance of early diagnosis, treatment, and intervention in CM. We retrospectively analyzed 33 children who were admitted to the Children’s Hospital of Soochow University between 1 March 2010 and 31 May 2019, and their diagnosis of CM was confirmed by radiological, surgical and pathological findings. All the patients were under 36 months of age. The patients were divided into prenatally diagnosed and postnatally diagnosed groups. There were 16 and 17 CM patients in the prenatally and postnatally diagnosed groups, respectively, with a preponderance of females in both groups. Compared with the prenatally diagnosed group, the postnatally diagnosed group had a higher incidence of abdominal pain and vomiting (p < 0.05) and higher AST, GGT, and TB levels (p < 0.05). Although postoperative histopathological examination showed inflammation in both groups, congestion in the cyst walls and fibrous tissue hyperplasia were more significant in the postnatally diagnosed group (p < 0.05). In addition, operation time, length of time required to resume a normal diet after surgery, and total length of hospitalization differed between the 2 groups (p < 0.05), with the prenatally diagnosed group having a relatively longer operation time and taking longer to resume a normal diet after surgery. However, the total length of hospitalization in the prenatally diagnosed group was shorter than that in the postnatally diagnosed group. Compared with prenatally diagnosed CM patients, more symptoms, greater severity of symptoms, and more time to recovery after surgery were observed in postnatally diagnosed CM patients.

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SAR Image Segmentation Based on Maximum Variance Method and Morphology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.798-799.761 ◽

2013 ◽

Vol 798-799 ◽

pp. 761-764

Author(s):

Ming Xia Xiao

Keyword(s):

Image Segmentation ◽

Noise Suppression ◽

Operation Time ◽

Differential Method ◽

Good Effect ◽

Sar Image ◽

Variance Method ◽

Maximum Variance ◽

Sar Image Segmentation ◽

A New Technique

A new technique that combines maximum variance method and morphology was presented for Synthetic Aperture Radar (SAR) image segmentation in target detection. Firstly, using the first-order differential method to enhance the original image for highlighting edge details of the image; then using the maximum variance method to calculate the gray threshold and segment the image; lastly, the mathematical morphology was used to processing the segmented image, which could prominently improve the segmentation effects. Experiments show that this algorithm can obtain accurate segmentation results, and have a good effect on noise suppression, edge detail protection and operation time.

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Automated Damage Assessment and Structural Modeling of Bridges with Visual Sensing Technology

10.17760/d20410114 ◽

2021 ◽

Author(s):

Yujie Yan ◽

Jerome F. Hajjar

Keyword(s):

Finite Element ◽

Damage Assessment ◽

Laser Scanning ◽

Sensor Data ◽

Structural Elements ◽

Visual Sensor ◽

Bridge Inspection ◽

Visual Sensing ◽

Sensing Technology ◽

Laser Scanners

Recent advances in visual sensing technology have gained much attention in the field of bridge inspection and management. Coupled with advanced robotic systems, state-of-the-art visual sensors can be used to obtain accurate documentation of bridges without the need for any special equipment or traffic closure. The captured visual sensor data can be post-processed to gather meaningful information for the bridge structures and hence to support bridge inspection and management. However, state-of-the-practice data postprocessing approaches require substantial manual operations, which can be time-consuming and expensive. The main objective of this study is to develop methods and algorithms to automate the post-processing of the visual sensor data towards the extraction of three main categories of information: 1) object information such as object identity, shapes, and spatial relationships - a novel heuristic-based method is proposed to automate the detection and recognition of main structural elements of steel girder bridges in both terrestrial and unmanned aerial vehicle (UAV)-based laser scanning data. Domain knowledge on the geometric and topological constraints of the structural elements is modeled and utilized as heuristics to guide the search as well as to reject erroneous detection results. 2) structural damage information, such as damage locations and quantities - to support the assessment of damage associated with small deformations, an advanced crack assessment method is proposed to enable automated detection and quantification of concrete cracks in critical structural elements based on UAV-based visual sensor data. In terms of damage associated with large deformations, based on the surface normal-based method proposed in Guldur et al. (2014), a new algorithm is developed to enhance the robustness of damage assessment for structural elements with curved surfaces. 3) three-dimensional volumetric models - the object information extracted from the laser scanning data is exploited to create a complete geometric representation for each structural element. In addition, mesh generation algorithms are developed to automatically convert the geometric representations into conformal all-hexahedron finite element meshes, which can be finally assembled to create a finite element model of the entire bridge. To validate the effectiveness of the developed methods and algorithms, several field data collections have been conducted to collect both the visual sensor data and the physical measurements from experimental specimens and in-service bridges. The data were collected using both terrestrial laser scanners combined with images, and laser scanners and cameras mounted to unmanned aerial vehicles.

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Rotordynamic Performance Measurements and Predictions of a Rotor Supported on Multilayer Gas Foil Journal Bearings for Microturbomachinery

Volume 7B: Structures and Dynamics ◽

10.1115/gt2016-56283 ◽

2016 ◽

Author(s):

Jongsung Lee ◽

Young Min Kim ◽

Moon Sung Park ◽

Tae Ho Kim ◽

Kyoung Ku Ha ◽

...

Keyword(s):

Damping Ratio ◽

Operation Time ◽

Journal Bearings ◽

Displacement Sensor ◽

Radial Clearance ◽

Performance Measurements ◽

Displacement Sensors ◽

Model Predictions ◽

Type C ◽

Time Required

This paper presents rotordynamic performance measurements of multilayer gas foil journal bearings (GFJBs) supporting the rotor of oil-free microturbomachinery, and a comparison with the model predictions. A series of rotor coast-down tests from 60 krpm were conducted to compare the rotordynamic performances of three previously developed multilayer GFJBs: types A, B, and C. During the tests, two sets of orthogonally positioned displacement sensors recorded the horizontal and vertical rotor motions, and an axially positioned displacement sensor measured the thrust of the runner axial motion. The test results revealed that the type C GFJBs have a superior rotordynamic capability over the other types. The additional coast-down tests from 100 krpm for the type C showed that the synchronous motions of the rotor are dominant at up to ∼50 krpm, but that large amplitudes of subsynchronous motion associated with the natural frequency of a rotor-GFJB system occur above this speed. Thermal transient response measurements were conducted using four k-type thermocouples at increasing rotor speeds of 20 to 100 krpm with increments of 10 krpm. The operation time required to establish steady-state temperatures was approximately 25 min for each speed. For most of the speeds tested, the front GFJB near the rotor impeller end showed the lowest temperatures, and both the rear GFJB near the thrust runner end and the permanent magnet (PM) motor showed the highest temperatures. The GFTB showed the lowest temperature at low speeds of below 50 krpm, and the highest temperature at the top speed of 100 krpm owing to the increasing axial load caused by the impeller force. The measured impeller pressure and motor output power increased nonlinearly with the increasing rotor speed and fits best with the second-order and third-order polynomial equations, respectively. The measured axial displacement revealed that the rotor moved axially up to ∼ 270 μm toward the impeller side as the speed increased to 100 krpm. Further experiments using a decrease in radial clearance of 30 μm demonstrated a suppression of the large amplitude of the subsynchronous rotor motion to a certain degree. In addition, the onset speed of the subsynchronous motions increased to 80 krpm for the type C GFJBs with the decrease in the radial clearance. Rotordynamic model predictions with the predicted GFJB stiffness and damping coefficients were benchmarked against the test data. The predicted natural frequencies, onset speed of instability (OSI) where the damping ratio became negative, and synchronous rotor response versus speed agreed reasonably with the measured whirl frequencies of the subsynchronous motions, the onset speed of subsynchronous motions (OSS), and the filtered synchronous rotor motion versus speed, respectively. The predictions also showed that the OSI increased from 50 krpm to 80 krpm with a decrease in the radial clearance, thus validating the present rotordynamic model.

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Two-Port Laparoscopic Common Bile Duct Exploration with T-tube Choledochostomy for Management of Choledocholithiasis: An Initial Clinical Report

The American Surgeon ◽

10.1177/000313481107700416 ◽

2011 ◽

Vol 77 (4) ◽

pp. 422-425

Author(s):

Ding-Ping Sun ◽

Wen-Ching Wang ◽

Kuo-Chang Wen ◽

Kai-Yuan Lin ◽

Yi-Feng Lin ◽

...

Keyword(s):

Bile Duct ◽

Common Bile Duct ◽

Standard Procedure ◽

Abdominal Cavity ◽

Operation Time ◽

Common Bile Duct Exploration ◽

Tube Placement ◽

Clinical Report ◽

T Tube ◽

Cbd Stones

Laparoscopic common bile duct exploration (LCBDE) is generally performed using a four- or five-port technique. We report a unique technique of two-port transcholedochal LCBDE with T-tube placement. Twelve consecutive patients with common bile duct (CBD) stones underwent LCBDE through two entry ports, one homemade single port (Uen port) inserted in a 2-cm umbilical wound and one 5-mm subxiphoid trocar port. With the assistance of a 1.2-mm needle that was inserted through a right lower intercostal space into the abdominal cavity to facilitate the operation, two-port dome-down laparoscopic cholecystectomy, choledochotomy, choledochoscopic removal of ductal caculi, and T-tube choldochostomy were performed with conventional methods using standard laparoscopic instruments along with manually operated angled shafts. After completion of the operation, the T-tube catheter was brought out through the subxiphoid trocar wound. All operations were completed successfully without the need of additional ports. There was no complication and no residual stones. Mean operation time was 120 minutes (range, 90 to 150 minutes), and mean postoperative hospital stay was 3.5 days (range, 3 to 4 days). Scarless wound healing was achieved except one T-tube scar. Two-port transumbilical LCBDE with T-tube choledochostomy is a feasible, safe, and effective technique that allows one-scar abdominal surgery for treatment of CBD stones. Further studies and the development of better instruments are necessary before this can be recommended as a standard procedure.

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Optimization of the Operation Time Required for Data Gathering Requirement in Extended-Reach Drilling Well by the Use of Open Hole Tractor in the United Arab Emirates

10.2118/188680-ms ◽

2017 ◽

Cited By ~ 2

Author(s):

Takahiro Toki ◽

Mhammed Benygzer ◽

Khalid Ahmed Al Wahedi ◽

Atul Kumar Anurag ◽

Rudrap Pratap Narayan Singh ◽

...

Keyword(s):

United Arab Emirates ◽

Data Gathering ◽

Operation Time ◽

Open Hole ◽

Time Required ◽

Extended Reach Drilling

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Efficacy and safety of a novel personalized navigation template in proximal femoral corrective osteotomy for the treatment of DDH

10.21203/rs.3.rs-28526/v2 ◽

2020 ◽

Author(s):

qiang shi ◽

Deyi Sun

Keyword(s):

Radiation Exposure ◽

Corrective Osteotomy ◽

Operation Time ◽

Conventional Group ◽

The Novel ◽

Efficacy And Safety ◽

Reduce Radiation Exposure ◽

Surgical Methods ◽

Significant Difference ◽

Navigation Template

Abstract Background: This present study is aimed to retrospectively evaluate the efficacy and safety of a novel personalized navigation template in proximal femoral corrective osteotomy for the treatment of DDH.Methods: Twenty-nine consecutive patients with DDH who underwent proximal femoral corrective osteotomy were evaluated between August 2013 and June 2017. Based on the different surgical methods, they were divided into the conventional group (n = 14) and navigation template group (n = 15). The osteotomy degrees, radiation exposure, and operation time were compared between the two groups.Results: No major complications relating to osteotomy surgery such as redislocation or avascular necrosis occurred in the navigation template group, which had more accurate osteotomy degrees, less radiation exposure, and shorter operation time when compared with the conventional group (P<0.05). Moreover, there was significant difference according to the McKay criteria between the two groups (P=0.0362).Conclusions: The novel personalized navigation template in proximal femoral corrective osteotomy is effective and safe, which could improve the femoral osteotomy accuracy, reduce radiation exposure, and shorten operation time.

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Analysis of the Effect of Dynamic Hip Screw and Anatomical Locking Plate

Advanced Emergency Medicine ◽

10.18686/aem.v4i4.4 ◽

2015 ◽

Vol 4 (4) ◽

pp. 11

Author(s):

Rong Ren ◽

Ying Ren ◽

Junhua Ji

Keyword(s):

Locking Plate ◽

Operation Time ◽

The Elderly ◽

Healing Time ◽

Dynamic Hip Screw ◽

Intertrochanteric Fractures ◽

Successful Operation ◽

Postoperative Drainage ◽

Hip Screw ◽

Intertrochanteric Femur Fracture

Objective: To analyze the effects of dynamic hip screw (DHS) and anatomical locking plate in the treatment of intertrochanteric fractures in elderly patients. Method: 56 cases of intertrochanteric femur fracture from March 2009 to October 2011 were treated by surgical treatment. The cases were divided into A and B groups with A group treated with DHS and B group with anatomical locking plates. Results: Treatments of the two groups were successful. Operation time, bleeding volume, postoperative drainage, hospitalization time and fracture healing time of B group were significantly less than that of A group (p < 0.05). The incidence of postoperative complications in B group was significantly less than that in the A group (p < 0.05). The excellent and good ratings of B group was 93.1% and 66.7% for the A group. The fine rating of B group was higher than that of A group (p < 0.05). Conclusion: Anatomical locking plate internal fixation for the treatment of intertrochanteric fractures in the elderly has certain advantages.

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Roof Snow Removal Device Based on Visual Sensing Technology

E3S Web of Conferences ◽

10.1051/e3sconf/202123304010 ◽

2021 ◽

Vol 233 ◽

pp. 04010

Author(s):

Zhiyang Zhang

Keyword(s):

Economic Development ◽

Adverse Impact ◽

Functional Modules ◽

Efficient Removal ◽

Snow Removal ◽

Visual Sensing ◽

Sensing Technology ◽

Removal Technology ◽

Fully Automatic ◽

Automatic Removal

Based on the analysis of the current situation of roof snow removal technology at home and abroad, this paper proposes a fully automatic roof snow removal device based on visual sensing technology. This product is composed of five functional modules: cutting snow removal module, frozen snow assisting removal module, pulley block anti-drop module, worm gear transmission module, and crawler movement module. Through the cooperation of various mechanisms, the efficient removal of snow on the roof is realized. Automatic removal can effectively reduce the adverse impact of snow on the roof on residents’ lives and economic development.

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