Capability of abdominal 320-detector row CT for small vasculature assessment compared with that of 64-detector row CT

Kazuhiro Kitajima, Tetsuo Maeda, Yoshiharu Ohno, Takeshi Yoshikawa, Minoru Konishi, Tomonori Kanda, Yumiko Onishi, Keiko Matsumoto, Hisanobu Koyama, Daisuke Takenaka, Kazuro Sugimura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Objective: To compare the capability of 320-detector row CT (area-detector CT: ADCT) with step-and-shoot scan protocol for small abdominal vasculature assessment with that of 64-detector row CT with helical scan protocol. Materials and methods: Total of 60 patients underwent contrast-enhanced abdominal CT for preoperative assessment. Of all, 30 suspected to have lung cancer underwent ADCT using step-and-shoot scan protocol. The other 30 suspected to have renal cell carcinoma underwent 64-MDCT using helical scan protocol. Two experienced radiologists independently assessed inferior epigastric, hepatic subsegmental (in the segment 8), mesenteric marginal (Griffith point) and inferior phrenic arteries by using 5-point visual scoring systems. Kappa analysis was used for evaluation of interobserver agreement. To compare the visualization capability of the two systems, the Mann-Whitney U-test was used to compare the scores for each of the arteries. Results: Overall interobserver agreements for both systems were almost perfect (κ > 0.80). Visualization scores for inferior epigastric and mesenteric arteries were significantly higher for ADCT than for 64-detector row CT (p < 0.05). No significant difference was found for hepatic subsegmental and inferior phrenic arteries. Conclusion: Small abdominal vasculature assessment by ADCT with step-and-shoot scan protocol is potentially equal to or better than that by 64-detector row CT with helical scan protocol.

Original languageEnglish
Pages (from-to)219-223
Number of pages5
JournalEuropean journal of radiology
Volume80
Issue number2
DOIs
Publication statusPublished - 11-2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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