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

Thomas W Loehfelm, Adam B. Prater, Tequam Debebe, Aarti K. Sekhar

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)49-54
Number of pages6
JournalJournal of Digital Imaging
Volume30
Issue number1
DOIs
StatePublished - Feb 1 2017

Fingerprint

Radiography
Image quality
Libraries
Teaching
Lions
Handheld Computers
Light
Ethiopia
Workflow
Photography
Image acquisition
Digital cameras
Motion Pictures
Image resolution
Cameras
Costs and Cost Analysis
Equipment and Supplies
Processing
Costs

Keywords

  • Efficiency
  • Electronic teaching file
  • Human-computer interaction
  • Image quality
  • Productivity
  • Radiology teaching files
  • Teaching
  • Workflow

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Computer Science Applications

Cite this

Digitizing an Analog Radiography Teaching File Under Time Constraint : Trade-Offs in Efficiency and Image Quality. / Loehfelm, Thomas W; Prater, Adam B.; Debebe, Tequam; Sekhar, Aarti K.

In: Journal of Digital Imaging, Vol. 30, No. 1, 01.02.2017, p. 49-54.

Research output: Contribution to journalArticle

@article{4a4411645593413e98277971ec6e434f,
title = "Digitizing an Analog Radiography Teaching File Under Time Constraint: Trade-Offs in Efficiency and Image Quality",
abstract = "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.",
keywords = "Efficiency, Electronic teaching file, Human-computer interaction, Image quality, Productivity, Radiology teaching files, Teaching, Workflow",
author = "Loehfelm, {Thomas W} and Prater, {Adam B.} and Tequam Debebe and Sekhar, {Aarti K.}",
year = "2017",
month = "2",
day = "1",
doi = "10.1007/s10278-016-9906-9",
language = "English (US)",
volume = "30",
pages = "49--54",
journal = "Journal of Digital Imaging",
issn = "0897-1889",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - Digitizing an Analog Radiography Teaching File Under Time Constraint

T2 - Trade-Offs in Efficiency and Image Quality

AU - Loehfelm, Thomas W

AU - Prater, Adam B.

AU - Debebe, Tequam

AU - Sekhar, Aarti K.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - 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.

AB - 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.

KW - Efficiency

KW - Electronic teaching file

KW - Human-computer interaction

KW - Image quality

KW - Productivity

KW - Radiology teaching files

KW - Teaching

KW - Workflow

UR - http://www.scopus.com/inward/record.url?scp=84988384574&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988384574&partnerID=8YFLogxK

U2 - 10.1007/s10278-016-9906-9

DO - 10.1007/s10278-016-9906-9

M3 - Article

C2 - 27644957

AN - SCOPUS:84988384574

VL - 30

SP - 49

EP - 54

JO - Journal of Digital Imaging

JF - Journal of Digital Imaging

SN - 0897-1889

IS - 1

ER -