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探讨经尿道钬激光联合锥型取石网(Stone cone)治疗输尿管上段结石的有效性和安全性。方法回顾性分析我院2018年4月~2019年6月经尿道输尿管镜治疗输尿管上段结石69例的临床资料,其中33例采用钬激光联合锥型取石网(观察组)，36例单用钬激光(对照组)。比较2组手术时间、结石逃逸率、清石率、输尿管损伤率、术后发热率和术后输尿管狭窄率。
Length and Geometric Patterns of the Greater Palatine Canal Observed in Cone Beam Computed Tomography
greater palatine canal
2014/11/6
The greater palatine canal is an important anatomical structure that is often utilized as a pathway for infiltration of local anesthesia to affect sensation and hemostasis. Increased awareness of the ...
Cone beam CT evaluation of the presence of anatomic accessory canals in the jaws
accessory canals CBCT
2014/11/6
To assess the prevalence, location and anatomical course of accessory canals of the jaws using cone beam CT. Methods: A retrospective analysis of 4200 successive cone beam CT scans, for patients of bo...
Facial Soft-Tissue Asymmetry in 3D Cone Beam Computed Tomography Images of Children with Surgically Corrected Unilateral Clefts
soft-tissue depth facial reconstruction cleft lip with or without cleft palate
2014/11/6
Cleft lip with or without cleft palate (CL/P) is a relatively common craniofacial malformation involving bony and soft-tissue disruptions of the nasolabial and dentoalveolar regions. The combination o...
Development of Three-dimensional FE Modeling System from the Limited Cone Beam CT Images for Orthodontic Tipping Tooth Movement
Three-dimensional FE model Orthodontic tooth movement Limited cone beam CT
2009/9/14
Previously, numerous three-dimensional finite element (FE) models of the dentoalveolar complex have been developed and stress analyses of orthodontic tooth movements were reported. Most of the models ...
An Approximate Cone Beam Reconstruction Algorithm for Gantry-Tilted CT Using Tangential Filtering
Gantry-Tilted CT Tangential Filtering
2009/9/8
FDK algorithm is a well-known 3D (three-dimensional) approximate algorithm for CT (computed tomography) image reconstruction and is also known to suffer from considerable artifacts when the scanning c...
Analysis of Cone-Beam Artifacts in off-Centered Circular CT for Four Reconstruction Methods
Cone-Beam Artifacts CT
2009/9/8
Cone-beam (CB) acquisition is increasingly used for truly three-dimensional X-ray computerized tomography (CT). However, tomographic reconstruction from data collected along a circular trajectory with...
FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW)
FDK Half-Scan FDKHSCW
2009/9/8
A cone beam circular half-scan scheme is becoming an attractive imaging method in cone beam CT since it improves the temporal resolution. Traditionally, the redundant data in the circular half-scan ra...
Extending Three-Dimensional Weighted Cone Beam Filtered Backprojection (CB-FBP) Algorithm for Image Reconstruction in Volumetric CT at Low Helical Pitches
CB-FBP Image Reconstruction
2009/9/8
A three-dimensional (3D) weighted helical cone beam filtered backprojection (CB-FBP) algorithm (namely, original 3D weighted helical CB-FBP algorithm) has already been proposed to reconstruct images f...
Using the backprojection filtration (BPF) and filtered backprojection (FBP) approaches, respectively, we prove that with cone-beam CT the interior problem can be exactly solved by analytic continuatio...
Cone-Beam Composite-Circling Scan and Exact Image Reconstruction for a Quasi-Short Object
Quasi-Short Object Cone-Beam Composite-Circling Scan
2009/9/4
Here we propose a cone-beam composite-circling mode to solve the quasi-short object problem, which is to reconstruct a short portion of a long object from longitudinally truncated cone-beam data invol...
An Efficient Estimation Method for Reducing the Axial Intensity Drop in Circular Cone-Beam CT
Estimation Method Circular Cone-Beam CT
2009/9/4
Reconstruction algorithms for circular cone-beam (CB) scans have been extensively studied in the literature. Since insufficient data are measured, an exact reconstruction is impossible for such a geom...
A Reconstruction Approach for Imaging in 3D Cone Beam Vector Field Tomography
Imaging 3D Cone Beam Vector Field Tomography
2009/9/4
3D cone beam vector field tomography (VFT) aims for reconstructing and visualizing the velocity field of a moving fluid by measuring line integrals of projections of the vector field. The data are obt...
Currently, 3D cone-beam CT image reconstruction speed is still a severe limitation for clinical application. The computational power of modern graphics processing units (GPUs) has been harnessed to pr...
3D Analytic Cone-Beam Reconstruction for Multiaxial CT Acquisitions
CT 3D Analytic Cone-Beam Reconstruction
2009/9/4
A conventional 3rd generation Computed Tomography (CT) system with a single circular source trajectory is limited in terms of longitudinal scan coverage since extending the scan coverage beyond 40R...