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| http://dx.doi.org/10.1038/s41433-018-0237-6 | DOI Listing |
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Deep Learning-Based Automated Optical Inspection System for the Additive Manufacturing of Diamond Tools.
3D Print Addit Manuf
December 2024
Key Laboratory of Intelligent Manufacturing Technology (Shantou University), Ministry of Education, Shantou, China.
Cutting tools with orderly arranged diamond grits using additive manufacturing show better sharpness and longer service life than traditional diamond tools. A retractable needle jig with vacuum negative pressure was used to absorb and place grits in an orderly arranged manner. However, needle hole wear after a long service time could not promise complete grit adsorption forever.
View Article and Find Full Text PDFDevelopment of subgingival calculus detector utilizing optical fiber: Verification of its potential for clinical application.
PLoS One
December 2024
Division of Preventive Dentistry, Department of Community Social Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan.
The removal of subgingival deposits, especially calculus, plays a crucial role in basic periodontal therapy. However, manual detection methods affect accuracy owing to the operator's skill. To avoid this uncertainty, we have developed a calculus detection device named "Sensor probe" and evaluated its ability to detect calculus for future clinical applications.
View Article and Find Full Text PDFWe describe a new type of spectropolarimeter in which light is separated to simultaneously measure six spectra carrying polarimetric information on a 2D CMOS camera. The polarization separation along one of the camera axes was obtained using a novel prism, and the spectral dispersion along the other camera axis was obtained using an imaging spectrometer. An ideal version of the six-fold separating prism is first described, in which polarimetric separation is performed along the canonical polarization states used to define the Stokes vector, and it can be explained without any math.
View Article and Find Full Text PDFEfficacy of additional lateral pinhole and SPECT/CT imaging in dual-phase Tc-99m MIBI parathyroid scintigraphy for localising parathyroid pathologies in patients with primary hyperparathyroidism: a single-institution experience.
Nucl Med Commun
January 2025
Departments of Nuclear Medicine.
Purpose: Parathyroid imaging with dual-phase technetium-99m methoxyisobutrylizonitrile (Tc-99m MIBI) scintigraphy serves as an important prerequisite for the identification of hyperfunctioning parathyroid gland(s) in patients with primary hyperparathyroidism (PHPT) for a successful targeted parathyroidectomy. This study aimed to evaluate the clinical value of additional lateral imaging and single-photon emission computed tomography/computed tomography (SPECT/CT) versus conventional planar imaging for locating parathyroid pathologies in patients with PHPT.
Materials And Methods: A retrospective review was performed on 105 patients who underwent dual-phase Tc-99m MIBI scintigraphy and were surgically treated by parathyroidectomy.
Background: Patient-specific instruments (PSIs) were reported to improve implant position and rotation accuracy in total knee arthroplasty (TKA), among other benefits. Most PSIs used in TKA were commercial products from implant manufacturers, which could be time-consuming and could potentially affect accuracy as they relied on engineer's decision. This study aimed to present the radiological outcomes of PSI produced by the 3D printing facility at our hospital, with direct involvement of the surgeon in its design.
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