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Radiation Dose Reduction Strategy for CT Protocols: Successful Implementation in Neuroradiology Section

Table E5. Demographics of the Four Types of Neuroradiology CT Studies Evaluated

Table E5

Note.—Numbers in parentheses are mean age in years ± standard deviation. m = male, f = female.

Table E6. Image Quality and Noise Grades of Protocols for Unenhanced CT of the Brain in Adult Patients

Table E6

Note.—Grades for image quality and noise are given as mean ± standard deviation. Details about the grading system can be found in Appendix E1. CI = confidence interval.

Table E7. Image Quality and Noise Grades of Protocols for Unenhanced CT of the Brain in Pediatric Patients

Table E7

Note.—Grades for image quality and noise are given as mean ± standard deviation. Details about the grading system can be found in Appendix E1. CI = confidence interval.

Table E8. Image Quality and Noise Dose Grades of Protocols for Unenhaced CT of the Cervical Spine in Adult Patients

Table E8

Note.—Grades for image quality and noise are given as mean ± standard deviation. Details about the grading system can be found in Appendix E1. CI = confidence interval.

Table E9. Image Quality and Noise Dose Grades of Protocols for CT Angiography in Adult Patients

Table E9

Note.—Grades for image quality and noise are given as mean ± standard deviation. Details about the grading system can be found in Appendix E1. CI = confidence interval.

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