This paper outlines methods to perform basic spatial operations on 2D digital images that have been mapped into an equivalent set of digital projections. The digital projections are generated using the Discrete Radon Transform (DRT). Each digital projection is similar to an oriented straight-line integral of the Radon transform and the set of digital projections resembles the sinogram from clas...

1. Effect of reconstruction filter on image in dental cone beam computed tomography Yuuki Houno 2. Characteristics of image in dual-energy computed tomography(CT) imaging Dae Hong Kim 3. Verification of lateral biological dose distribution with microdosimetric kinetic model in carbon-ion radiotherapy Mikoto Tamura 4. The imparct of secondary particles on in-beam PET imaging for dose verificatio...

During the past decade, major progress has been made in the evolution of technology directed toward the accurate measurement of regional myocardial perfusion in patients. The deficiencies of some of the older methods (thermodilution and gas clearance) are better appreciated and improved approaches (Doppler catheters, positron-emission tomography, and digital subtraction angiography) have been d...

one of the most common and important therapeutic tools used by physicians is prescription. the use of digital systems in the health field has many benefits and significant impacts on the health system. one of these systems is digital prescription. in this article, first, we will review the existing infrastructure and work done in this area, and then with a new perspective on health issues, we w...

OBJECTIVES The aim of the present study was to compare the accuracy of intraoral digital periapical radiography and cone beam computed tomography in the detection of periapical radiolucencies in endodontically treated teeth. MATERIAL AND METHODS Radiographic images (cone beam computed tomography [CBCT] scans and digital periapical radiography [PR] images) from 60 patients, achieved from Septe...

OBJECTIVE To determine the features of earthquake-related pelvic crush fractures versus non-earthquake fractures with digital radiography and multidetector row computed tomography. METHODS One hundred and sixty-seven survivors with pelvic crush fractures in the 2008 Sichuan earthquake were entered in our study as the earthquake-related group (139 underwent digital radiography, 28 underwent mu...

BACKGROUND Renal arteriovenous malformation is an aberrant vascular connection between the renal artery and vein. Acquired renal arteriovenous malformation (arteriovenous fistulae) accounts for approximately 70% of renal arteriovenous abnormalities. Congenital renal arteriovenous malformation, relatively rare, can result in significant hematuria which may require arterial embolization or nephre...