Abstract This paper explains that Jerry N. Uelsmann, born in 1934, is one of the pioneers of using darkroom and digital computer techniques. The author points out that, when shooting, Uelsmann begins with an image, builds upon it through the shoot, and then builds upon it even more in the darkroom and on the computer, rather than let any predetermined vision set the course of his work. The paper concludes that, in its artistic development, digital technology likewise will build upon works such as Uelsmann.
Table of Contents
Art versus Science: a Theoretical Overview
Art and Science Today
Overview Jerry N. Uelsmann's Photographic Vision
The Digital Revolution
From the Paper "The transmission of photography has thus been changed because of digital use in the ability of images to be juxtaposed and fused, creating even more and newer ways of envisioning reality. Digital photography's use of cutting, melding, and blending, has enabled the creativity of new photographic minds and enabled the ease of transmitting the visions of artists into the photographic medium, beyond the page, beyond paint and physical clay. It has also emphasized the postmodern aesthetic of blending and the film-like jump cut of different visions. However, this aesthetic existed long before digital, the net, and even the post-structuralist movement, as is found in the photographic art of Jerry N. Uelsmann."
Tags: yosemite, darkroom, digital, yellowstone, process
Abstract This paper examines diagnostic x-ray imaging quality assurance (QA) and quality control (QC). It defines QA and QC for diagnostic x-ray imaging and then discusses how this occurs within all areas of a radiology department. Lastly, the paper discusses the growth of quality assurance in pediatric radiology. The paper contains tables and images.
Table of Contents:
Diagnostic X-Ray Imaging Quality Assurance (QA)
Diagnostic X-Ray Imaging Quality Control (QC)
Radiographic Unit Monitoring
Sensitometery and Darkroom Monitoring
Use of Technique Charts
Analysis of Repeat Rates
Continuing Education
Repeat Analysis
Timer Quality Control in Radiographic Equipment
Collimator Quality Control
Vertical Beam Alignment Quality Control
Collimation
Focal-spot Size
Fluoroscopy Quality Control
Automatic Exposure Systems
Tomography Quality Control
Ensuring QC in Conventional Radiographic Systems
Radiation Safety/QA Program
Test Frequency
Different Types of Tests and Duration
Growth of Quality Assurance in Pediatric Radiology
Exhibits
From the Paper "The various parameters to be checked under radiography are (i) assessment of the focal spot size which is the surface area of the anode which is bombarded by the electron beam. In case of radiography machine, it ranges from 0.1 to 1.2 mm or more than that. In case of mammo-machines the values are 0.3 to 0.6. The assessment of focal spot size is applied to get a X-ray image having the least blur. Small focal spot are likely to concentrate heat and emits load on focal spot areas. In case the quantity of heat emitted at the time of an individual exposure is more than the track capacity, the anode surface is liable to melt. Besides, the assessment of the focal spot size is necessary to compare it with the original focal spot size with that of the machine. Also spot size of any machine is stated on the top of the X-Ray tube. (Mukhtar, n. d.)"
