Comparison between 3-T magnetic resonance imaging and multi-detector row computed tomography for the preoperative evaluation of rectal cancer
- Authors
- Kim C.K.; Kim S.H.; Choi D.; Kim M.J.; Chun H.-K.; Lee S.J.; Lee J.M.
- Issue Date
- 2007
- Keywords
- High-field-strength imaging; Magnetic resonance; MRI; Multidetector row computed tomography; Neoplasm; Rectum; Staging
- Citation
- Journal of Computer Assisted Tomography, v.31, no.6, pp 853 - 859
- Pages
- 7
- Indexed
- SCOPUS
- Journal Title
- Journal of Computer Assisted Tomography
- Volume
- 31
- Number
- 6
- Start Page
- 853
- End Page
- 859
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/18395
- DOI
- 10.1097/RCT.0b013e318038fc84
- ISSN
- 0363-8715
1532-3145
- Abstract
- OBJECTIVE: To compare prospectively between 3-T magnetic resonance imaging (MRI) and multidetector row computed tomography (MDCT) for the local staging of rectal cancer. MATERIALS AND METHODS: During a recent 8-month period, both 3-T MRI with a phased array coil and MDCT scanner were used to preoperatively examine 31 consecutive patients. Preoperatively, the 3 experienced reviewers independently assessed the MRI and MDCT findings for the depth of tumor invasion into the rectal wall (T). Regional lymph node metastasis (N) was assessed by the 3 reviewers working in consensus. For T staging, we used a modified T staging (≤T2, T3, and T4 staging). The results of the MRI and MDCT findings were compared based on the diagnosis of the resected specimens. RESULTS: At histopathology, T1 was identified in 8 patients, T2 in 6, and T3 in 17 patients. The sensitivity, specificity, and accuracy for T2 staging or less between MRI and MDCT were 93% and 79%, 88% and 76%, and 91% and 77%, respectively. The sensitivity, specificity, and accuracy for T3 between MRI and MDCT were 92% and 73%, 93% and 83%, and 92% and 78%, respectively; there was a statistically significant difference for the T2 and T3 staging or less (P < 0.01). For N staging, MRI and CT can predict accurately in 88% and 77%, respectively (P > 0.05). CONCLUSIONS: For local staging of rectal cancer, 3-T MRI is more accurate than MDCT for determining the depth of tumor invasion and the extent of lymph node metastasis. © 2007 Lippincott Williams & Wilkins, Inc.
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- Appears in
Collections - 2. Clinical Science > Department of Radiology > 1. Journal Articles
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