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. 1999 Mar;44(3):301–305. doi: 10.1136/gut.44.3.301

Computed tomography colonography (virtual colonoscopy): a new method for colorectal screening

C JOHNSON 1, D AHLQUIST 1
PMCID: PMC1727417  PMID: 10026308

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Figure 1 .

Figure 1

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Colonoscopic, endoluminal three dimensional view, and two dimensional image of a 2.5 cm sessile polyp. (From: Hara AK, Johnson CD, Reed JE. Colorectal lesions: Evaluation with CT colography. RadioGraphics 1997;17:1157-67.) 


Figure 2 .

Figure 2

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Two dimensional and endoluminal three dimensional image of a lobulated 1.8 cm polyp. (From: Johnson CD, Hara AK, Reed JE. Computed tomographic colonography (virtual colonoscopy): a new method for detecting colorectal neoplasms. Endoscopy 1997;29:454-61.) 


Figure 3 .

Figure 3

Figure 3

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Colonoscopic and endoluminal three dimensional image of a 4 mm colonic polyp. 


Figure 4 .

Figure 4

Figure 4

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(A) Colonoscopic, (B) two dimensional view and (C) endoluminal three dimensional image of a polypoid carcinoma. 


Figure 5 .

Figure 5

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(A) A polypoid filling defect is present on the endoluminal three dimensional image. (B) The filling defect is of heterogeneous internal density, characteristic of retained air in stool. (From: Hara AK, Johnson CD, Reed JE. Colorectal lesions: evaluation with CT colography. RadioGraphics 1997;17:1157-67.) 


Figure 6 .

Figure 6

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(A) Large polypoid intraluminal filling defect on an endoluminal three dimensional image. (B) The internal density of the mass is fatty on the two dimensional image, pathognomonic of a benign lipoma. (From: Hara AK, Johnson CD, Reed JE. Colorectal lesions: evaluation with CT colography. RadioGraphics 1997;17:1157-67.) 


Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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