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[Virtual coloscopy with multi-slice computerized tomography. Preliminary results].
Radiologe. 2000 Mar; 40(3):274-82.R

Abstract

SUBJECT

Using multi-slice computed tomography (MSCT) large body areas can scanned with high spatial resolution. In this study, MSCT was employed for virtual colonoscopy in various pathologies of the colon.

MATERIALS AND METHODS

For MSCT a Somatom Plus 4, Volume Zoom scanner, (Siemens, Forchheim) was employed, equipped with four parallel detector rows. Twenty-five patients were included in this trial, prior to colonoscopy or partial colon resection. After cleaning the colon, distension was achieved by insufflation of room air using a rectal tube. The parameters of acquisition and reconstruction were as follows: collimation 4 x 1 mm and 4 x 2.5 mm respectively; tube charge per slice: 140-160 mAs; pitch 5-6; i.v. contrast medium: 120 ml Ultravist 300 (Schering) with a flow rate of 3 ml/s; delay: 35 s. For 3D reconstruction we used edge-enhanced volume rendering, virtual colonoscopy and extraluminal views of volume-rendered images.

RESULTS

Nine polyps and four of five colon carcinomas were detected using MSCT virtual colonoscopy. In three patients with ulcerative colitis virtual coloscopy revealed morphological alterations compatible with this disease. In two of four patients with multiple diverticula of the colon the true extent of the disorder could be assessed in virtual colonoscopy.

CONCLUSION

Utilizing virtual MSCT colonoscopy polyps and cancer of the colon can be reliably detected, if proper cleaning and distension is provided. On axial images alone smaller polyps may be assessed. The high z-axis resolution of MSCT offers superior conditions for CT-based virtual colonoscopy.

Authors+Show Affiliations

Institut für Klinische Radiologie, Klinikum Grosshadern, Universität München. grust@ikra.med.uni-muenchen.deNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

ger

PubMed ID

10789127

Citation

Rust, G F., et al. "[Virtual Coloscopy With Multi-slice Computerized Tomography. Preliminary Results]." Der Radiologe, vol. 40, no. 3, 2000, pp. 274-82.
Rust GF, Eisele O, Hoffmann JN, et al. [Virtual coloscopy with multi-slice computerized tomography. Preliminary results]. Radiologe. 2000;40(3):274-82.
Rust, G. F., Eisele, O., Hoffmann, J. N., Kopp, R., Fürst, H., & Reiser, M. (2000). [Virtual coloscopy with multi-slice computerized tomography. Preliminary results]. Der Radiologe, 40(3), 274-82.
Rust GF, et al. [Virtual Coloscopy With Multi-slice Computerized Tomography. Preliminary Results]. Radiologe. 2000;40(3):274-82. PubMed PMID: 10789127.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Virtual coloscopy with multi-slice computerized tomography. Preliminary results]. AU - Rust,G F, AU - Eisele,O, AU - Hoffmann,J N, AU - Kopp,R, AU - Fürst,H, AU - Reiser,M, PY - 2000/5/2/pubmed PY - 2000/6/24/medline PY - 2000/5/2/entrez SP - 274 EP - 82 JF - Der Radiologe JO - Radiologe VL - 40 IS - 3 N2 - SUBJECT: Using multi-slice computed tomography (MSCT) large body areas can scanned with high spatial resolution. In this study, MSCT was employed for virtual colonoscopy in various pathologies of the colon. MATERIALS AND METHODS: For MSCT a Somatom Plus 4, Volume Zoom scanner, (Siemens, Forchheim) was employed, equipped with four parallel detector rows. Twenty-five patients were included in this trial, prior to colonoscopy or partial colon resection. After cleaning the colon, distension was achieved by insufflation of room air using a rectal tube. The parameters of acquisition and reconstruction were as follows: collimation 4 x 1 mm and 4 x 2.5 mm respectively; tube charge per slice: 140-160 mAs; pitch 5-6; i.v. contrast medium: 120 ml Ultravist 300 (Schering) with a flow rate of 3 ml/s; delay: 35 s. For 3D reconstruction we used edge-enhanced volume rendering, virtual colonoscopy and extraluminal views of volume-rendered images. RESULTS: Nine polyps and four of five colon carcinomas were detected using MSCT virtual colonoscopy. In three patients with ulcerative colitis virtual coloscopy revealed morphological alterations compatible with this disease. In two of four patients with multiple diverticula of the colon the true extent of the disorder could be assessed in virtual colonoscopy. CONCLUSION: Utilizing virtual MSCT colonoscopy polyps and cancer of the colon can be reliably detected, if proper cleaning and distension is provided. On axial images alone smaller polyps may be assessed. The high z-axis resolution of MSCT offers superior conditions for CT-based virtual colonoscopy. SN - 0033-832X UR - https://www.unboundmedicine.com/medline/citation/10789127/[Virtual_coloscopy_with_multi_slice_computerized_tomography__Preliminary_results]_ L2 - https://dx.doi.org/10.1007/s001170050669 DB - PRIME DP - Unbound Medicine ER -