Digitizing an Analog Radiography Teaching File Under Time Constraint: Trade-Offs in Efficiency and Image Quality

Autor: Aarti Sekhar, Adam B. Prater, Thomas W. Loehfelm, Tequam Debebe
Rok vydání: 2016
Předmět:
Time Factors
business.product_category
020205 medical informatics
Electronic teaching file
Image quality
Aperture
Computer science
Clinical Sciences
Libraries
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Radiology teaching files
Efficiency
02 engineering and technology
Digital
Article
Workflow
030218 nuclear medicine & medical imaging
03 medical and health sciences
File size
0302 clinical medicine
Computer graphics (images)
0202 electrical engineering
electronic engineering
information engineering
Humans
Radiology
Nuclear Medicine and imaging
Image resolution
Productivity
Digital camera
Radiological and Ultrasound Technology
Teaching
Photography
Libraries
Digital
Human-computer interaction
Shutter speed
Computer Science Applications
Radiography
Nuclear Medicine & Medical Imaging
Radiology Information Systems
Ethiopia
business
Film speed
Zdroj: Journal of digital imaging, vol 30, iss 1
ISSN: 1618-727X
0897-1889
DOI: 10.1007/s10278-016-9906-9
Popis: We digitized the radiography teaching file at Black Lion Hospital (Addis Ababa, Ethiopia) during a recent trip, using a standard digital camera and a fluorescent light box. Our goal was to photograph every radiograph in the existing library while optimizing the final image size to the maximum resolution of a high quality tablet computer, preserving the contrast resolution of the radiographs, and minimizing total library file size. A secondary important goal was to minimize the cost and time required to take and process the images. Three workers were able to efficiently remove the radiographs from their storage folders, hang them on the light box, operate the camera, catalog the image, and repack the radiographs back to the storage folder. Zoom, focal length, and film speed were fixed, while aperture and shutter speed were manually adjusted for each image, allowing for efficiency and flexibility in image acquisition. Keeping zoom and focal length fixed, which kept the view box at the same relative position in all of the images acquired during a single photography session, allowed unused space to be batch-cropped, saving considerable time in post-processing, at the expense of final image resolution. We present an analysis of the trade-offs in workflow efficiency and final image quality, and demonstrate that a few people with minimal equipment can efficiently digitize a teaching file library.
Databáze: OpenAIRE
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