Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom

E. E. Christensen, G. W. Dietz, R. C. Murry, E. M. Stokely, J. G. Moore

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A partial chest phantom was constructed to compare two commonly employed radiographic techniques, 70 kVp without a grid and 120 kVp with a grid, for the detection of pulmonary nodules. The phantom consisted of human ribs embedded in paraffin, the lungs of a dog injected with silicone rubber, a tissue equivalent wax heart and beeswax nodules. The nodules ranged in size from 3-7 mm. A series of 120 films was exposed, half with each technique, and the films were interpreted by three senior residents and seven staff radiologists. More nodules of all sizes except 3 mm were detected with the 120 kVp technique. The 3 mm nodules were rarely detected with either technique. The disadvantages of the 120 kVp technique were an approximate 50 percent increase in patient exposures and almost twice as many false-positive nodule detections.

Original languageEnglish (US)
Pages (from-to)462-464
Number of pages3
JournalInvestigative Radiology
Volume12
Issue number5
StatePublished - 1977

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Thorax
Silicone Elastomers
Lung
Waxes
Ribs
Paraffin
Dogs
beeswax
Radiologists

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Christensen, E. E., Dietz, G. W., Murry, R. C., Stokely, E. M., & Moore, J. G. (1977). Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom. Investigative Radiology, 12(5), 462-464.

Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom. / Christensen, E. E.; Dietz, G. W.; Murry, R. C.; Stokely, E. M.; Moore, J. G.

In: Investigative Radiology, Vol. 12, No. 5, 1977, p. 462-464.

Research output: Contribution to journalArticle

Christensen, EE, Dietz, GW, Murry, RC, Stokely, EM & Moore, JG 1977, 'Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom', Investigative Radiology, vol. 12, no. 5, pp. 462-464.
Christensen EE, Dietz GW, Murry RC, Stokely EM, Moore JG. Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom. Investigative Radiology. 1977;12(5):462-464.
Christensen, E. E. ; Dietz, G. W. ; Murry, R. C. ; Stokely, E. M. ; Moore, J. G. / Grid versus non grid techniques for the detection of pulmonary nodules in a chest phantom. In: Investigative Radiology. 1977 ; Vol. 12, No. 5. pp. 462-464.
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