A new method of intracranial aneurysm modeling for stereolithography apparatus 3D printer: the “Wall-carving technique” using digital imaging and communications in medicine data

2021 ◽  
Author(s):  
Jun Haruma ◽  
Kenji Sugiu ◽  
Minori Hoshika ◽  
Masafumi Hiramatsu ◽  
Tomohito Hishikawa ◽  
...  
Keyword(s):  
Intracranial Aneurysm ◽  
Digital Imaging ◽  
New Method ◽  
3D Printer

scholarly journals Digital Imaging as a Possible Approach in Evaluation of Islet Yield

2003 ◽  
Vol 12 (2) ◽  
pp. 129-133 ◽  
Author(s):  
Peter Girman ◽  
Jan Kříž ◽  
Jozef Friedmanský ◽  
FrantišEk Saudek
Keyword(s):  
Image Analysis ◽  
Digital Image ◽  
Digital Imaging ◽  
Digital Image Analysis ◽  
Three Dimensional ◽  
Two Dimensions ◽  
New Method ◽  
Important Method ◽  
Three Dimensional Objects ◽  
Significant Difference

Digital image analysis (DIA) is a new method in assessment of islet amount, which is expected to provide reliable and consistent results. We compared this method with conventional counting of small numbers of rat islets. Islets were isolated from 8 pancreases and counted in 24 samples in duplicate, first routinely by sizing according to estimated diameters under a calibrated reticule and then by processing of islets pictures taken by camera. As presumed, no significant difference was found in absolute numbers of islets per sample between DIA and conventional assessment. Volumes of islets per sample measured by DIA were on average more than 10% higher than amounts evaluated conventionally, which was statistically significant. DIA has been shown to be an important method to remove operator bias and provide consistent results. Evaluation of only two dimensions of three-dimensional objects still represents a certain limitation of this technique. With lowering of computer prices the system could become easily available for islet laboratories.

scholarly journals One-stage operation for acute subdural hematoma due to ruptured intracranial aneurysm using the portable digital imaging system.

1998 ◽  
Vol 9 (5) ◽  
pp. 196-200 ◽  
Author(s):  
Takashi Arai ◽  
Takashi Ishihara ◽  
Kazuyoshi Hgashimoto ◽  
Masaaki Iwase ◽  
Takaya Tanaka ◽  
...  
Keyword(s):  
Intracranial Aneurysm ◽  
Subdural Hematoma ◽  
Digital Imaging ◽  
Imaging System ◽  
Acute Subdural Hematoma ◽  
One Stage ◽  
Ruptured Intracranial Aneurysm ◽  
Digital Imaging System

Objective scar assessment—A new method using standardized digital imaging and spectral modelling

Burns ◽  
2011 ◽  
Vol 37 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Ilkka S. Kaartinen ◽  
Petri O. Välisuo ◽  
Jarmo T. Alander ◽  
Hannu O. Kuokkanen
Keyword(s):  
Digital Imaging ◽  
New Method ◽  
Scar Assessment

scholarly journals A New Method for Generating Image Projections in DLP-type 3D Printer Systems

2017 ◽  
Vol 11 ◽  
pp. 490-500 ◽  
Author(s):  
Ulas Yaman ◽  
Melik Dolen ◽  
Ugur M. Dilberoglu ◽  
Bahar Gharehpapagh
Keyword(s):  
New Method ◽  
3D Printer ◽  
Image Projections

scholarly journals Development and investigation of device for processing polymer materials by 3D-printing method

2019 ◽  
Vol 5 (3-4) ◽  
pp. 25-32
Author(s):  
Petro Zozulia ◽  
◽  
Oleg Polishchuk ◽  
Nazar Kostyuk ◽  
Andriy Polishchuk ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
3D Printing ◽  
Polymer Materials ◽  
New Method ◽  
3D Printer ◽  
Current State ◽  
Main Components ◽  
Processing Polymer ◽  
Printing Method

The analysis of the current state of 3d industry and prospects for its future. In the work, calculations were made and graphs of dependence were obtained, which influence the work of the auger and the installation itself. A new method of printing parts with polymer granules is described and the principle of operation of the equipment used is described. The picture of the working installation with the main components and the method of its attachment on a 3D printer is presented. The heating modes of the extruder itself are simulated and a thermal diagram of the device is shown, which accurately displays the temperature distribution across the sections.

A New Method of Mapping and Counting Micropipes in SiC Wafers

2006 ◽  
Vol 527-529 ◽  
pp. 447-450
Author(s):  
Jian Wei Wan ◽  
Seung Ho Park ◽  
Gil Yong Chung ◽  
E.P. Carlson ◽  
Mark J. Loboda
Keyword(s):  
Light Scattering ◽  
High Resolution ◽  
Digital Imaging ◽  
Laser Light ◽  
Laser Light Scattering ◽  
New Method ◽  
Non Destructive ◽  
Koh Etching ◽  
Good Agreement

Micropipes are considered to be a major device killer in SiC wafers. Developing a method to count and map micropipes efficiently and accurately has been a challenging task to date. In this work, a new method based on KOH etching and full wafer, high resolution digital imaging is developed to map and count micropipes in both conductive and semi-insulating SiC wafers. This method is also compared with a non-destructive method based on laser light scattering and a good agreement between the two methods is demonstrated.

Digitising Cuneiform Tablets

2005 ◽  
Author(s):  
Carlo Vandecasteele ◽  
Luc Van Gool ◽  
Karel Van Lerberghe ◽  
Johan Van Rompay ◽  
Patrick Wambacq
Keyword(s):  
Image Processing ◽  
Digital Imaging ◽  
Middle Eastern ◽  
New Method ◽  
Image Processing Algorithm ◽  
Field Methods ◽  
The Third ◽  
Enhancement Method ◽  
Pottery Sherds

In 1850, ‘Assyriology’, or the science of reading and interpreting cuneiform, was created. During this period, historians travelled to the Middle East and spent years copying cuneiform tablets. Now, at the beginning of the third millennium AD, not much has changed. Historians still rely on epigraphy which employs the copying of inscriptions and texts by hand. This method is highly subjective, tedious and time-consuming. As Middle Eastern antiquities departments do not allow the export of these tablets, historians and scholars are faced with the challenge of producing more efficient field methods. This chapter discusses a new method of recording the information taken from cuneiform tablets using digitizing. Digital imaging uses a camera wherein the picture captured is linked to a laptop which runs an image processing algorithm program to obtain the desired results. An enhancement method is then applied to improve the quality of the image. Digitizing cuneiform tablets provides historians a working document with legibility of 90 to 95 per cent. Aside from its relatively efficiency, digital imaging can also allow for the registering of various tablets in one excavation season and can be employed in the digital registration of all sealings such as pottery sherds, and fingerprints on clay vessels.

Evaluation of Occult Breast Cancer with Automated Breast Volume Sonography (ABVS)

2017 ◽  
pp. 109-117
Author(s):  
M. P. Efremova ◽  
V. E. Gazhonova ◽  
E. M. Bachurina
Keyword(s):  
Breast Cancer ◽  
Digital Imaging ◽  
Clinical Case ◽  
Dense Breast ◽  
New Method ◽  
Glandular Tissue ◽  
Breast Volume ◽  
High Quality ◽  
Occult Breast Cancer ◽  
X Ray

A new method of automatic breast volume ultrasonography (ABVS) brings out new possibilities for the evaluation of occult breast cancer, missed on X-ray mammography due to dense breast glandular tissue. This is primarily due to the opportunity to assess the 3D format of whole breast by one scan with evaluation of a typical for malignancy spicularity or retraction phenomenon, high quality digital imaging technologies that enhance the visualization of retroareolar area, opportunity to work with the image on the working station, in the absence of the patient, the possibility of obtaining comparable scans and use them to monitor pathological formations. We present our own clinical case of occult breast cancer in a patient with a dense glandular background, demonstrating the possibilities of automatic volume sonography.

Analysis of 3-d molecular distribution with the digital imaging microscope

1988 ◽  
Vol 46 ◽  
pp. 40-41
Author(s):  
W.A. Carrington ◽  
F.S. Fay ◽  
K.E. Fogarty ◽  
L. Lifshitz
Keyword(s):  
Image Restoration ◽  
Digital Imaging ◽  
Fluorescent Dyes ◽  
Optical Axis ◽  
Computer Hardware ◽  
Computer Algorithms ◽  
Low Contrast ◽  
Specific Proteins ◽  
Effective Use ◽  
Single Living Cells

Advances in digital imaging microscopy and in the synthesis of fluorescent dyes allow the determination of 3D distribution of specific proteins, ions, GNA or DNA in single living cells. Effective use of this technology requires a combination of optical and computer hardware and software for image restoration, feature extraction and computer graphics.The digital imaging microscope consists of a conventional epifluorescence microscope with computer controlled focus, excitation and emission wavelength and duration of excitation. Images are recorded with a cooled (-80°C) CCD. 3D images are obtained as a series of optical sections at .25 - .5 μm intervals.A conventional microscope has substantial blurring along its optical axis. Out of focus contributions to a single optical section cause low contrast and flare; details are poorly resolved along the optical axis. We have developed new computer algorithms for reversing these distortions. These image restoration techniques and scanning confocal microscopes yield significantly better images; the results from the two are comparable.

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