|
KMID : 1103720090600020109
|
|
Journal of the Korean Society of Radiology
2009 Volume.60 No. 2 p.109 ~ p.116
|
|
|
Diagnostic Performance of Multidetector-Row CT for Predicting the Preoperative Staging of Renal Cell Carcinoma
|
|
Kim Chan-Kyo
Park Byung-Kwan
Choi Dong-Il
Kim Ji-Hye
Kang Tae-Wook
|
|
|
Abstract
|
|
|
Purpose: We assessed the diagnostic performance of multidetector-row computed tomography (MDCT) for preoperatively predicting the T-staging of renal cell carcinoma (RCC).
Materials and Methods: All the MDCT studies were performed using a 16- or 40-slice MDCT scanner and the three-phase CT images, including unenhanced, corticomedullary and delayed nephrographic phase images. For the differentiation between ≤ T2 disease and ≥ T3 disease, a four-point scale was used and a score of more than three was considered indicative of ≥ T3 disease. The imaging findings were compared with the surgical specimens with using the 2002 TNM staging system. Statistical analysis was performed using McNemar’s test, κ statistics and receiver operating characteristic (ROC) analysis.
Results: The 144 RCCs consisted of 72 T1a, 31 T1b, 16 T2, 13 T3a and 12 T3b. For all the T-staging, the accuracies of MDCT were excellent (≥ 87%) for both readers. For predicting ≥ T3 disease on MDCT, the area under the receiver operating characteristics curve (Az) for both readers was 0.898 and 0.896, respectively. The interreader agreement was almost perfect (κ = 0.853).
Conclusion: MDCT was accurate for preoperatively predicting the T-staging of RCCs, with almost perfect interreader agreement.
|
|
|
KEYWORD
|
|
|
Carcinoma, renal cel, Neoplasm stage, Tomography, X-ray computed, Image processing, ROC curve
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|