Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey

Yechiam Ostchega, L. Rodney Long, Gin Hua Goh, Rosemarie Hirsch, Loralie D. Ma, William W. Scott, Wayne Johnson, George R. Thoma

Research output: Contribution to journalArticle

Abstract

In the third National Health and Nutrition Examination Survey (NHANES III) conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention, radiographs of the hands and knees were taken of participants 60 years and older as part of the study of arthritis and musculoskeletal conditions. The purpose of the study was to decide the digitizing resolution to be used for these radiographs. A set of wrist and hand radiographs (N = 49) was graded by two radiologists for degree of bone erosions and served as a "gold standard." The radiographs were then digitized at three resolution levels; low-resolution 150 μm (2001 × 1634 × 12 bit matrix); intermediate-resolution 100 μm (3000 × 2400 × 12 bit matrix); and high-resolution 50 μm (4900 × 3000 × 12 bit matrix). A comparison of the digital images versus the gold standard reading was made at the three resolutions by two radiologists. Kappa statistics suggested fair (K > .4) to excellent (K > .75) agreement between the gold standard and the images at all levels. Intraclass correlation coefficient suggested high agreement between readers (ICC > .5), with minimal individual reader effect. Variance component estimates showed that the major contribution (78-83%) to scoring came from variability in the images themselves, not from the readers. The 100 μm resolution was selected over the 150 and 50 μm on the basis of practical considerations such as storage requirements, display time, and easier manipulation of the digital images by the readers.

Original languageEnglish (US)
Pages (from-to)116-120
Number of pages5
JournalJournal of Digital Imaging
Volume11
Issue number3
StatePublished - Aug 1998
Externally publishedYes

Fingerprint

Nutrition Surveys
Analog to digital conversion
Nutrition
Wrist
Hand
Health
Statistics
National Center for Health Statistics (U.S.)
Disease control
Centers for Disease Control and Prevention (U.S.)
Arthritis
Reading
Erosion
Knee
Bone
Display devices
Bone and Bones
Radiologists

Keywords

  • Digital resolution
  • Hand
  • NHANES III
  • Radiograph

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Ostchega, Y., Long, L. R., Goh, G. H., Hirsch, R., Ma, L. D., Scott, W. W., ... Thoma, G. R. (1998). Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey. Journal of Digital Imaging, 11(3), 116-120.

Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey. / Ostchega, Yechiam; Long, L. Rodney; Goh, Gin Hua; Hirsch, Rosemarie; Ma, Loralie D.; Scott, William W.; Johnson, Wayne; Thoma, George R.

In: Journal of Digital Imaging, Vol. 11, No. 3, 08.1998, p. 116-120.

Research output: Contribution to journalArticle

Ostchega, Y, Long, LR, Goh, GH, Hirsch, R, Ma, LD, Scott, WW, Johnson, W & Thoma, GR 1998, 'Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey', Journal of Digital Imaging, vol. 11, no. 3, pp. 116-120.
Ostchega, Yechiam ; Long, L. Rodney ; Goh, Gin Hua ; Hirsch, Rosemarie ; Ma, Loralie D. ; Scott, William W. ; Johnson, Wayne ; Thoma, George R. / Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey. In: Journal of Digital Imaging. 1998 ; Vol. 11, No. 3. pp. 116-120.
@article{16cb036a6a2448b3a7ed05fb844506c8,
title = "Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey",
abstract = "In the third National Health and Nutrition Examination Survey (NHANES III) conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention, radiographs of the hands and knees were taken of participants 60 years and older as part of the study of arthritis and musculoskeletal conditions. The purpose of the study was to decide the digitizing resolution to be used for these radiographs. A set of wrist and hand radiographs (N = 49) was graded by two radiologists for degree of bone erosions and served as a {"}gold standard.{"} The radiographs were then digitized at three resolution levels; low-resolution 150 μm (2001 × 1634 × 12 bit matrix); intermediate-resolution 100 μm (3000 × 2400 × 12 bit matrix); and high-resolution 50 μm (4900 × 3000 × 12 bit matrix). A comparison of the digital images versus the gold standard reading was made at the three resolutions by two radiologists. Kappa statistics suggested fair (K > .4) to excellent (K > .75) agreement between the gold standard and the images at all levels. Intraclass correlation coefficient suggested high agreement between readers (ICC > .5), with minimal individual reader effect. Variance component estimates showed that the major contribution (78-83{\%}) to scoring came from variability in the images themselves, not from the readers. The 100 μm resolution was selected over the 150 and 50 μm on the basis of practical considerations such as storage requirements, display time, and easier manipulation of the digital images by the readers.",
keywords = "Digital resolution, Hand, NHANES III, Radiograph",
author = "Yechiam Ostchega and Long, {L. Rodney} and Goh, {Gin Hua} and Rosemarie Hirsch and Ma, {Loralie D.} and Scott, {William W.} and Wayne Johnson and Thoma, {George R.}",
year = "1998",
month = "8",
language = "English (US)",
volume = "11",
pages = "116--120",
journal = "Journal of Digital Imaging",
issn = "0897-1889",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Establishing the level of digitization for wrist and hand radiographs for the third national health and nutrition examination survey

AU - Ostchega, Yechiam

AU - Long, L. Rodney

AU - Goh, Gin Hua

AU - Hirsch, Rosemarie

AU - Ma, Loralie D.

AU - Scott, William W.

AU - Johnson, Wayne

AU - Thoma, George R.

PY - 1998/8

Y1 - 1998/8

N2 - In the third National Health and Nutrition Examination Survey (NHANES III) conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention, radiographs of the hands and knees were taken of participants 60 years and older as part of the study of arthritis and musculoskeletal conditions. The purpose of the study was to decide the digitizing resolution to be used for these radiographs. A set of wrist and hand radiographs (N = 49) was graded by two radiologists for degree of bone erosions and served as a "gold standard." The radiographs were then digitized at three resolution levels; low-resolution 150 μm (2001 × 1634 × 12 bit matrix); intermediate-resolution 100 μm (3000 × 2400 × 12 bit matrix); and high-resolution 50 μm (4900 × 3000 × 12 bit matrix). A comparison of the digital images versus the gold standard reading was made at the three resolutions by two radiologists. Kappa statistics suggested fair (K > .4) to excellent (K > .75) agreement between the gold standard and the images at all levels. Intraclass correlation coefficient suggested high agreement between readers (ICC > .5), with minimal individual reader effect. Variance component estimates showed that the major contribution (78-83%) to scoring came from variability in the images themselves, not from the readers. The 100 μm resolution was selected over the 150 and 50 μm on the basis of practical considerations such as storage requirements, display time, and easier manipulation of the digital images by the readers.

AB - In the third National Health and Nutrition Examination Survey (NHANES III) conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention, radiographs of the hands and knees were taken of participants 60 years and older as part of the study of arthritis and musculoskeletal conditions. The purpose of the study was to decide the digitizing resolution to be used for these radiographs. A set of wrist and hand radiographs (N = 49) was graded by two radiologists for degree of bone erosions and served as a "gold standard." The radiographs were then digitized at three resolution levels; low-resolution 150 μm (2001 × 1634 × 12 bit matrix); intermediate-resolution 100 μm (3000 × 2400 × 12 bit matrix); and high-resolution 50 μm (4900 × 3000 × 12 bit matrix). A comparison of the digital images versus the gold standard reading was made at the three resolutions by two radiologists. Kappa statistics suggested fair (K > .4) to excellent (K > .75) agreement between the gold standard and the images at all levels. Intraclass correlation coefficient suggested high agreement between readers (ICC > .5), with minimal individual reader effect. Variance component estimates showed that the major contribution (78-83%) to scoring came from variability in the images themselves, not from the readers. The 100 μm resolution was selected over the 150 and 50 μm on the basis of practical considerations such as storage requirements, display time, and easier manipulation of the digital images by the readers.

KW - Digital resolution

KW - Hand

KW - NHANES III

KW - Radiograph

UR - http://www.scopus.com/inward/record.url?scp=0032129199&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032129199&partnerID=8YFLogxK

M3 - Article

C2 - 9718501

AN - SCOPUS:0032129199

VL - 11

SP - 116

EP - 120

JO - Journal of Digital Imaging

JF - Journal of Digital Imaging

SN - 0897-1889

IS - 3

ER -