How Much Is the Dose Varying between Follow-Up CT-Examinations Performed on the Same Scanner with the Same Imaging Protocol?

• Saravanabavaan Suntharalingam ,

  Contributed equally to this work with: Saravanabavaan Suntharalingam, Kai Nassenstein

  * E-mail: Saravanabavaan.Suntharalingam@uk-essen.de

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Franz Ferdinand Stecker ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Nika Guberina ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Adrian Ringelstein ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Thomas Schlosser ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Jens Matthias Theysohn ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Michael Forsting ,

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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• Kai Nassenstein

  Contributed equally to this work with: Saravanabavaan Suntharalingam, Kai Nassenstein

  Affiliation Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

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