Diagnostic Accuracy of Computed Tomography Using Lower Doses of Radiation for Patients With Crohn's Disease Orla Craig, Siobhan O'Neill, Fiona O'Neill,

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Presentation transcript:

Diagnostic Accuracy of Computed Tomography Using Lower Doses of Radiation for Patients With Crohn's Disease Orla Craig, Siobhan O'Neill, Fiona O'Neill, Patrick McLaughlin, AnneMarie McGarrigle, Sebastian McWilliams, Owen O'Connor, Alan Desmond, Elizabeth Kenny Walsh, Max Ryan, Michael Maher, Fergus Shanahan Clinical Gastroenterology and Hepatology Volume 10, Issue 8, Pages 886-892 (August 2012) DOI: 10.1016/j.cgh.2012.03.014 Copyright © 2012 AGA Institute Terms and Conditions

Figure 1 (A) Diagnostic acceptability of conventional- and low-dose images subjectively determined at anatomical structures such as the solid organs, large bowel, small bowel, pericolonic fat, perienteric fat, and overall. (B) Distribution and severity of streak artifact at the level of the diaphragm, porta hepatis, renal hilum, iliac crest, and acetabulum. Streak artifact can obscure important anatomic and pathologic findings on low-dose CT images. Clinical Gastroenterology and Hepatology 2012 10, 886-892DOI: (10.1016/j.cgh.2012.03.014) Copyright © 2012 AGA Institute Terms and Conditions

Figure 2 (A) Axial CT images demonstrating an enterocolic fistula in a 31-year-old man with a BMI of 26.9 shown on low-dose scan with an effective radiation dose of 1.6 mSv (i) and conventional-dose scan with an effective dose of 6.5 mSv (ii) representing a 75% dose reduction. (B) Sagittal CT images demonstrating a pericolonic abscess in a 46-year-old man with a BMI of 26.8 shown on low-dose scan with an effective dose of 1.5 mSv (i) and conventional-dose scan with an effective dose of 5 mSv (ii) representing a 70% dose reduction. Clinical Gastroenterology and Hepatology 2012 10, 886-892DOI: (10.1016/j.cgh.2012.03.014) Copyright © 2012 AGA Institute Terms and Conditions

Figure 3 Tumor of the cervix in a 73-year-old woman with a BMI of 31.4 shown on low-dose scan with an effective dose of 4.4 mSv (A) and conventional-dose scan with an effective dose of 17 mSv (B) representing a 74% dose reduction. Clinical Gastroenterology and Hepatology 2012 10, 886-892DOI: (10.1016/j.cgh.2012.03.014) Copyright © 2012 AGA Institute Terms and Conditions