European Radiology

, Volume 19, Issue 8, pp 1951–1959 | Cite as

Panoramic endoluminal display with minimal image distortion using circumferential radial ray-casting for primary three-dimensional interpretation of CT colonography

  • Seung Soo Lee
  • Seong Ho Park
  • Jin Kook Kim
  • Namkug Kim
  • Jeongjin Lee
  • Beom Jin Park
  • Young Jun Kim
  • Min Woo Lee
  • Ah Young Kim
  • Hyun Kwon Ha
Gastrointestinal

Abstract

The purpose of this study was to develop a panoramic endoluminal display technique, the band view, which causes minimal image distortion, and to determine its feasibility as a time-efficient primary three-dimensional review method of CT colonography (CTC). Image distortion was compared between the band view and four other three-dimensional review modes using ten 10-mm and ten 20-mm electronically generated polyps. Diagnostic performance and interpretation time were compared between the band view and the conventional endoluminal view by two independent readers in 52 patients who underwent CTC and colonoscopy on the same day. Mean image distortion index values, in which 1 indicates no distortion and the larger value represents greater distortion, were significantly smaller with the band view (1.03 and 1.01 for 10-mm and 20-mm polyps, respectively) than with the filet view (1.65 and 1.55) or the virtual colon dissection (3.27 and 3.85) (P ≤ 0.004). The sensitivity and specificity for detecting adenomatous polyps ≥6 mm did not differ, but the mean interpretation time was significantly shorter with the band view than with the conventional endoluminal view by 1.8 and 4.5 minutes in readers 1 and 2, respectively (P < 0.0001). The band view can be a time-efficient alternative for primary three-dimensional review of CTC.

Keywords

Colonography Computed tomographic Colonic polyps Three-dimensional image 

Supplementary material

330_2009_1362_MOESM1_ESM.m1v (6.2 mb)
Movie 1A video clip of virtual colon navigation using the band view from the transverse colon to the cecum in a 50-year-old woman with a 13-mm pedunculated tubular adenoma in the hepatic flexure (the same patient as in Fig. 1). (M1V 620 MB).
330_2009_1362_MOESM2_ESM.m1v (4.5 mb)
Movie 2aVirtual colon navigation from the proximal transverse colon to the ascending colon with the band view (a) and with the filet view (b). Each movie clip shows three 10-mm synthetic polyps, located in the inner and outer curvatures of the hepatic flexure and in the ascending colon, respectively. The band view (a) produces less image distortion than the filet view (b). (M1V 4.49 MB).
330_2009_1362_MOESM3_ESM.m1v (3.8 mb)
Movie 2b(M1V 380 MB).

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Copyright information

© European Society of Radiology 2009

Authors and Affiliations

  • Seung Soo Lee
    • 1
  • Seong Ho Park
    • 1
  • Jin Kook Kim
    • 2
  • Namkug Kim
    • 1
  • Jeongjin Lee
    • 1
  • Beom Jin Park
    • 3
  • Young Jun Kim
    • 4
  • Min Woo Lee
    • 4
    • 5
  • Ah Young Kim
    • 1
  • Hyun Kwon Ha
    • 1
  1. 1.Department of Radiology and Research Institute of RadiologyUniversity of Ulsan College of Medicine, Asan Medical CenterSeoulKorea
  2. 2.INFINITT Co., Ltd.SeoulKorea
  3. 3.Department of RadiologyKorea University College of MedicineSeoulKorea
  4. 4.Department of RadiologyKonkuk University School of Medicine, Konkuk University HospitalSeoulKorea
  5. 5.Department of RadiologySamsung Medical Center, Sungkyunkwan University School of MedicineSeoulKorea

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