Preoperative MRI of rectal cancer with and without rectal water filling: An intraindividual comparison

Myeong Jin Kim, Joon Seok Lim, Young Taik Oh, Joo Hee Kim, Jae Joon Chung, Seung Ho Joo, Namkyu Kim, Kang Young Lee, Won Ho Kim, Ki Whang Kim

Research output: Contribution to journalReview article

35 Citations (Scopus)

Abstract

OBJECTIVE. The purpose of our study was to determine if a rectal distention using warm water may improve the accuracy of MRI for the preoperative staging of rectal carcinoma. SUBJECTS AND METHODS. Sixty-two patients with surgically proven rectal carcinomas underwent pelvic MRI before and after a rectal distention by warm water. Four radiologists, who were blinded to the study, reviewed each set of T1- and T2-weighted axial images obtained before and after the rectal distention and scored the image of the tumor. The accuracies for determining the tumor penetration of the outer wall of the rectum and the regional lymph node involvement were compared by analyzing the area under the receiver operating characteristic curve (A z). RESULTS. For all reviewers, the tumor depiction scores were significantly higher in the distended images (3.8-3.9 for reviewers 1-4) than in the nondistended images (3.0-3.2) (p < 0.01). For determining the outer wall penetration, the accuracy of the three reviewers was significantly higher with the rectal distention images than with the nondistended images (p < 0.05). The mean accuracy of the all reviewers was significantly better with the distended images (Az = 0.922) than with the nondistended images (Az = 0.841) (p < 0.05). For determining the presence of regional lymph node involvement, all the reviewers came to similar conclusions in analyzing the two image sets. CONCLUSION. Rectal distention by water filling may improve the depiction of a primary rectal tumor and the assessment accuracy of a perirectal tumor extension, but it does not improve the accuracy for determining the presence of regional lymph node involvement.

Original languageEnglish
Pages (from-to)1469-1476
Number of pages8
JournalAmerican Journal of Roentgenology
Volume182
Issue number6
DOIs
Publication statusPublished - 2004 Jan 1

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Rectal Neoplasms
Water
Lymph Nodes
Neoplasms
Carcinoma
Rectum
ROC Curve

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Kim, M. J., Lim, J. S., Oh, Y. T., Kim, J. H., Chung, J. J., Joo, S. H., ... Kim, K. W. (2004). Preoperative MRI of rectal cancer with and without rectal water filling: An intraindividual comparison. American Journal of Roentgenology, 182(6), 1469-1476. https://doi.org/10.2214/ajr.182.6.1821469
Kim, Myeong Jin ; Lim, Joon Seok ; Oh, Young Taik ; Kim, Joo Hee ; Chung, Jae Joon ; Joo, Seung Ho ; Kim, Namkyu ; Lee, Kang Young ; Kim, Won Ho ; Kim, Ki Whang. / Preoperative MRI of rectal cancer with and without rectal water filling : An intraindividual comparison. In: American Journal of Roentgenology. 2004 ; Vol. 182, No. 6. pp. 1469-1476.
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abstract = "OBJECTIVE. The purpose of our study was to determine if a rectal distention using warm water may improve the accuracy of MRI for the preoperative staging of rectal carcinoma. SUBJECTS AND METHODS. Sixty-two patients with surgically proven rectal carcinomas underwent pelvic MRI before and after a rectal distention by warm water. Four radiologists, who were blinded to the study, reviewed each set of T1- and T2-weighted axial images obtained before and after the rectal distention and scored the image of the tumor. The accuracies for determining the tumor penetration of the outer wall of the rectum and the regional lymph node involvement were compared by analyzing the area under the receiver operating characteristic curve (A z). RESULTS. For all reviewers, the tumor depiction scores were significantly higher in the distended images (3.8-3.9 for reviewers 1-4) than in the nondistended images (3.0-3.2) (p < 0.01). For determining the outer wall penetration, the accuracy of the three reviewers was significantly higher with the rectal distention images than with the nondistended images (p < 0.05). The mean accuracy of the all reviewers was significantly better with the distended images (Az = 0.922) than with the nondistended images (Az = 0.841) (p < 0.05). For determining the presence of regional lymph node involvement, all the reviewers came to similar conclusions in analyzing the two image sets. CONCLUSION. Rectal distention by water filling may improve the depiction of a primary rectal tumor and the assessment accuracy of a perirectal tumor extension, but it does not improve the accuracy for determining the presence of regional lymph node involvement.",
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Kim, MJ, Lim, JS, Oh, YT, Kim, JH, Chung, JJ, Joo, SH, Kim, N, Lee, KY, Kim, WH & Kim, KW 2004, 'Preoperative MRI of rectal cancer with and without rectal water filling: An intraindividual comparison', American Journal of Roentgenology, vol. 182, no. 6, pp. 1469-1476. https://doi.org/10.2214/ajr.182.6.1821469

Preoperative MRI of rectal cancer with and without rectal water filling : An intraindividual comparison. / Kim, Myeong Jin; Lim, Joon Seok; Oh, Young Taik; Kim, Joo Hee; Chung, Jae Joon; Joo, Seung Ho; Kim, Namkyu; Lee, Kang Young; Kim, Won Ho; Kim, Ki Whang.

In: American Journal of Roentgenology, Vol. 182, No. 6, 01.01.2004, p. 1469-1476.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Preoperative MRI of rectal cancer with and without rectal water filling

T2 - An intraindividual comparison

AU - Kim, Myeong Jin

AU - Lim, Joon Seok

AU - Oh, Young Taik

AU - Kim, Joo Hee

AU - Chung, Jae Joon

AU - Joo, Seung Ho

AU - Kim, Namkyu

AU - Lee, Kang Young

AU - Kim, Won Ho

AU - Kim, Ki Whang

PY - 2004/1/1

Y1 - 2004/1/1

N2 - OBJECTIVE. The purpose of our study was to determine if a rectal distention using warm water may improve the accuracy of MRI for the preoperative staging of rectal carcinoma. SUBJECTS AND METHODS. Sixty-two patients with surgically proven rectal carcinomas underwent pelvic MRI before and after a rectal distention by warm water. Four radiologists, who were blinded to the study, reviewed each set of T1- and T2-weighted axial images obtained before and after the rectal distention and scored the image of the tumor. The accuracies for determining the tumor penetration of the outer wall of the rectum and the regional lymph node involvement were compared by analyzing the area under the receiver operating characteristic curve (A z). RESULTS. For all reviewers, the tumor depiction scores were significantly higher in the distended images (3.8-3.9 for reviewers 1-4) than in the nondistended images (3.0-3.2) (p < 0.01). For determining the outer wall penetration, the accuracy of the three reviewers was significantly higher with the rectal distention images than with the nondistended images (p < 0.05). The mean accuracy of the all reviewers was significantly better with the distended images (Az = 0.922) than with the nondistended images (Az = 0.841) (p < 0.05). For determining the presence of regional lymph node involvement, all the reviewers came to similar conclusions in analyzing the two image sets. CONCLUSION. Rectal distention by water filling may improve the depiction of a primary rectal tumor and the assessment accuracy of a perirectal tumor extension, but it does not improve the accuracy for determining the presence of regional lymph node involvement.

AB - OBJECTIVE. The purpose of our study was to determine if a rectal distention using warm water may improve the accuracy of MRI for the preoperative staging of rectal carcinoma. SUBJECTS AND METHODS. Sixty-two patients with surgically proven rectal carcinomas underwent pelvic MRI before and after a rectal distention by warm water. Four radiologists, who were blinded to the study, reviewed each set of T1- and T2-weighted axial images obtained before and after the rectal distention and scored the image of the tumor. The accuracies for determining the tumor penetration of the outer wall of the rectum and the regional lymph node involvement were compared by analyzing the area under the receiver operating characteristic curve (A z). RESULTS. For all reviewers, the tumor depiction scores were significantly higher in the distended images (3.8-3.9 for reviewers 1-4) than in the nondistended images (3.0-3.2) (p < 0.01). For determining the outer wall penetration, the accuracy of the three reviewers was significantly higher with the rectal distention images than with the nondistended images (p < 0.05). The mean accuracy of the all reviewers was significantly better with the distended images (Az = 0.922) than with the nondistended images (Az = 0.841) (p < 0.05). For determining the presence of regional lymph node involvement, all the reviewers came to similar conclusions in analyzing the two image sets. CONCLUSION. Rectal distention by water filling may improve the depiction of a primary rectal tumor and the assessment accuracy of a perirectal tumor extension, but it does not improve the accuracy for determining the presence of regional lymph node involvement.

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