TY - JOUR
T1 - Magnetic resonance colonography with automated carbon dioxide insufflation: Diagnostic accuracy and distension
AU - van der Paardt, M. P.
AU - Zijta, F. M.
AU - Boellaard, T. N.
AU - Jensch, S.
AU - Baak, L. C.
AU - Depla, A. C. T. M.
AU - Dekker, E.
AU - Nederveen, A. J.
AU - Bipat, S.
AU - Stoker, J.
PY - 2014
Y1 - 2014
N2 - To evaluate the diagnostic performance of MR colonography using automated carbon dioxide (CO2) insufflation for colonic distension, with colonoscopy serving as the reference standard. Ninety-eight symptomatic patients underwent MR colonography with faecal tagging and automated CO2 insufflation. Three readers (one expert (reader 1), and two less experienced (readers 2 and 3)) evaluated the images for the presence of colorectal lesions. Bowel distension was evaluated on a 4-point scale. Results were verified with colonoscopy and histopathological analysis. Per-patient sensitivity for lesions ≥10mm was 91.7% (11 of 12) (reader 1), 75.0% (9 of 12) (reader 2), and 75% (9 of 12) (reader 3). Specificity was 96.5% (82 of 85) (reader 1), 97.7% (83 of 85) (reader 2), 95.3% (81 of 85) (reader 3). Per-patient sensitivity for lesions ≥6mm was 85.7% (18 of 21) (reader 1), 57.1% (12 of 21) (reader 2), and 57.1% (12 of 21) (reader 3). Specificity was 86.8% (66 of 76), 98.7% (75 of 76), 90.8% (69 of 76), respectively. Per-patient sensitivity for advanced neoplasia of ≥10mm and ≥6mm was 88.9% (8 of 9) for all readers. Specificity for ≥10mm and ≥6mm was 98.9% (87 of 88) (reader 1), 97.7% (86 of 88) (reader 2), 96.6% (85 of 88) (reader 3). 94.4% of the colon segments were adequate to optimal distended with dual positioning. MR colonography can accurately detect lesions ≥10mm, and advanced neoplasia ≥6mm. Sufficient distension was achieved using automated CO2 insufflation for colonic distension in MR colonography
AB - To evaluate the diagnostic performance of MR colonography using automated carbon dioxide (CO2) insufflation for colonic distension, with colonoscopy serving as the reference standard. Ninety-eight symptomatic patients underwent MR colonography with faecal tagging and automated CO2 insufflation. Three readers (one expert (reader 1), and two less experienced (readers 2 and 3)) evaluated the images for the presence of colorectal lesions. Bowel distension was evaluated on a 4-point scale. Results were verified with colonoscopy and histopathological analysis. Per-patient sensitivity for lesions ≥10mm was 91.7% (11 of 12) (reader 1), 75.0% (9 of 12) (reader 2), and 75% (9 of 12) (reader 3). Specificity was 96.5% (82 of 85) (reader 1), 97.7% (83 of 85) (reader 2), 95.3% (81 of 85) (reader 3). Per-patient sensitivity for lesions ≥6mm was 85.7% (18 of 21) (reader 1), 57.1% (12 of 21) (reader 2), and 57.1% (12 of 21) (reader 3). Specificity was 86.8% (66 of 76), 98.7% (75 of 76), 90.8% (69 of 76), respectively. Per-patient sensitivity for advanced neoplasia of ≥10mm and ≥6mm was 88.9% (8 of 9) for all readers. Specificity for ≥10mm and ≥6mm was 98.9% (87 of 88) (reader 1), 97.7% (86 of 88) (reader 2), 96.6% (85 of 88) (reader 3). 94.4% of the colon segments were adequate to optimal distended with dual positioning. MR colonography can accurately detect lesions ≥10mm, and advanced neoplasia ≥6mm. Sufficient distension was achieved using automated CO2 insufflation for colonic distension in MR colonography
U2 - https://doi.org/10.1016/j.ejrad.2014.01.013
DO - https://doi.org/10.1016/j.ejrad.2014.01.013
M3 - Article
C2 - 24560199
SN - 0720-048X
VL - 83
SP - 743
EP - 750
JO - European Journal of Radiology
JF - European Journal of Radiology
IS - 5
ER -