computers in radiology_small

7/18/2019 Computers in Radiology_small

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Electromagnetic RadiationElectromagnetic Radiation


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XX Ray Interactions With MatterRay Interactions With MatterXX Ray Interactions With MatterRay Interactions With Matter

Photoelectric EffectPhotoelectric Effect Compton ScatterCompton Scatter

PhotoelectronPhotoelectronPhotoelectronPhotoelectron

ScatteredScattered

PhotonPhoton

ScatteredScattered

PhotonPhoton

CharacteristicCharacteristicRadiationRadiationCharacteristicCharacteristicRadiationRadiation


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CT Scanning: HistoryCT Scanning: HistoryOriginal EMI Mark I ScannerOriginal EMI Mark I Scanner

Single detectorSingle detectorSingle xSingle x ray sourceray source

Pencil beamPencil beam


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CT Scanning: HistoryCT Scanning: HistoryOriginal EMI Mark I ScannerOriginal EMI Mark I Scanner


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Multiple detectorsMultiple detectorsSingle xSingle x ray sourceray source

Wider beamWider beam


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Multiple detectorsMultiple detectorsSingle xSingle x ray sourceray source

Fan beam, sourceFan beam, source

rotatesrotatesXX--ray sourceray source


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XX--ra sourcera source


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http://www.youtube.com/watch?v=7g5UVrOt2CI


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3.75 mm3.75 mm 15 mm MIP15 mm MIP 30 mm MIP30 mm MIP


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computers in radiology_small

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