Reduced Kilovoltage in Computed Tomography–Guided Intervention in a Community Hospital: Effect on the Radiation Dose Saman Rezazadeh, MD, PhD, Steven.

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Reduced Kilovoltage in Computed Tomography–Guided Intervention in a Community Hospital: Effect on the Radiation Dose Saman Rezazadeh, MD, PhD, Steven J. Co, MD, Simon Bicknell, MD, FRCPC Canadian Association of Radiologists Journal Volume 65, Issue 4, Pages 345-351 (November 2014) DOI: 10.1016/j.carj.2014.04.002 Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

Figure 1 A 66-year-old woman with lung metastasis. (A) Axial computed tomography (CT) image (at 120 kV, 147 effective mAs) of the lower lobes, demonstrating 2 nodules. (B) Axial CT image (at 80 kV, 181 effective mAs) depicts the biopsy of the larger nodule; beam hardening and/or streak artifact from the needle is clearly visible in the large nodule; however, diagnostic efficiency was not compromised. Canadian Association of Radiologists Journal 2014 65, 345-351DOI: (10.1016/j.carj.2014.04.002) Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

Figure 2 A 85-year-old woman with pelvic abscess. (A) Axial computed tomography (CT) image (120 kV, 266 effective mAs) of the pelvis, depicting a small pelvic abscess on the right posterior to the bladder. (B) Axial CT image (80 kV, 310 effective mAs) of the pelvis, showing an 18-gauge needle within the abscess; note the beam-hardening artifact from the needle within the abscess, which did not affect completion of the procedure. Canadian Association of Radiologists Journal 2014 65, 345-351DOI: (10.1016/j.carj.2014.04.002) Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

Figure 3 A 40-year-old man with clinically diagnosed sacroiliac joint arthropathy. (A) Axial computed tomography (CT) image (at 120 kV, 192 effective mAs) of the sacroiliac joints. (B) Axial CT image (at 80 kV, 286 effective mAs) of the sacroiliac joints, demonstrating a 22-gauge needle within the left sacroiliac joint. Canadian Association of Radiologists Journal 2014 65, 345-351DOI: (10.1016/j.carj.2014.04.002) Copyright © 2014 Canadian Association of Radiologists Terms and Conditions