| Project/Area Number |
02454284
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Radiation science
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| Research Institution | Kanazawa University |
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Principal Investigator |
TAKASHIMA Tsutomu Department of Radiology, Kanazawa University Professor, 医学部, 教授 (70019545)
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| Project Period (FY) |
1990 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1991: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1990: ¥5,100,000 (Direct Cost: ¥5,100,000)
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| Keywords | dual energy subtraction / plain chest radiography / soft tissue image / bone image / lung cancer screening / calcifed nodule / computed radiography / single exposure / 胸部単純X線検査 / エネルギ-差分法 / FCR / 一回撮影 / fineエネサブ / 肺癌スクリ-ニング法 |
|---|
| Research Abstract |
Postprocessing of image data is one of the unique capabilities of digital radiography that may improve diagnostic performance. Computed radiography (CR) using imaging plates is performed with a dedicated digital radiographic unit. Dual-energy subtraction can also be performed with the system. we studied the impact of digital chest imaging (CR) on the detection of pulmonary nodular shadows in a comparison with conventional chest radiograms.
Dual-energy subtraction improved the detection of nodules in 21% cases.
Subtraction images markedly improved the detection of nodules hidden under the ribs and calcifications the dual energy subtraction technique appears promising for lung cancer screening.
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