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Techniques, clinical applications and limitations of 3D reconstruction in CT of the abdomen.

Maher MM, Kalra MK, Sahani DV, Perumpillichira JJ, Rizzo S, Saini S, Mueller PR - Korean J Radiol (2004 Jan-Mar)

Bottom Line: This pictorial essay describes the improvements in 3D reconstruction and technical aspects of 3D reconstruction and rendering techniques available for abdominal imaging.Clinical applications of 3D imaging in abdomen including liver, pancreaticobiliary system, urinary and gastrointestinal tracts and imaging before and after transplantation are discussed.In addition, this article briefly discusses the disadvantages of thin-slice acquisitions including increasing numbers of transverse images, which must be reviewed by the radiologist.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston 02184, USA. mmaher@partners.org

ABSTRACT
Enhanced z-axis coverage with thin overlapping slices in breath-hold acquisitions with multidetector CT (MDCT) has considerably enhanced the quality of multiplanar 3D reconstruction. This pictorial essay describes the improvements in 3D reconstruction and technical aspects of 3D reconstruction and rendering techniques available for abdominal imaging. Clinical applications of 3D imaging in abdomen including liver, pancreaticobiliary system, urinary and gastrointestinal tracts and imaging before and after transplantation are discussed. In addition, this article briefly discusses the disadvantages of thin-slice acquisitions including increasing numbers of transverse images, which must be reviewed by the radiologist.

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Screening CT colonoscopy was performed in a 55-year-old man. Coronal reformat (A) and virtual colonoscopy (B) images demonstrate a polyp (arrow) in the ascending colon. 3D reconstruction in CT colonoscopy also helps in differentiating normal mucosal folds from intraluminal masses.
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Figure 16: Screening CT colonoscopy was performed in a 55-year-old man. Coronal reformat (A) and virtual colonoscopy (B) images demonstrate a polyp (arrow) in the ascending colon. 3D reconstruction in CT colonoscopy also helps in differentiating normal mucosal folds from intraluminal masses.

Mentions: CT colonoscopy utilizes an array of multiplanar and endoluminal reconstructions to permit detailed evaluation of the entire large bowel (Fig. 16) (5). Data from our institution and others have demonstrated satisfactory sensitivity and specificity for detection of polyps greater than 1 cm, coincidentally, the lesions that are most likely to harbor malignancy (Fig. 16). One indisputable advantage of CT colonography has been in the completion of conventional colonography examinations when the endoscopist cannot reach the cecum.


Techniques, clinical applications and limitations of 3D reconstruction in CT of the abdomen.

Maher MM, Kalra MK, Sahani DV, Perumpillichira JJ, Rizzo S, Saini S, Mueller PR - Korean J Radiol (2004 Jan-Mar)

Screening CT colonoscopy was performed in a 55-year-old man. Coronal reformat (A) and virtual colonoscopy (B) images demonstrate a polyp (arrow) in the ascending colon. 3D reconstruction in CT colonoscopy also helps in differentiating normal mucosal folds from intraluminal masses.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2698114&req=5

Figure 16: Screening CT colonoscopy was performed in a 55-year-old man. Coronal reformat (A) and virtual colonoscopy (B) images demonstrate a polyp (arrow) in the ascending colon. 3D reconstruction in CT colonoscopy also helps in differentiating normal mucosal folds from intraluminal masses.
Mentions: CT colonoscopy utilizes an array of multiplanar and endoluminal reconstructions to permit detailed evaluation of the entire large bowel (Fig. 16) (5). Data from our institution and others have demonstrated satisfactory sensitivity and specificity for detection of polyps greater than 1 cm, coincidentally, the lesions that are most likely to harbor malignancy (Fig. 16). One indisputable advantage of CT colonography has been in the completion of conventional colonography examinations when the endoscopist cannot reach the cecum.

Bottom Line: This pictorial essay describes the improvements in 3D reconstruction and technical aspects of 3D reconstruction and rendering techniques available for abdominal imaging.Clinical applications of 3D imaging in abdomen including liver, pancreaticobiliary system, urinary and gastrointestinal tracts and imaging before and after transplantation are discussed.In addition, this article briefly discusses the disadvantages of thin-slice acquisitions including increasing numbers of transverse images, which must be reviewed by the radiologist.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston 02184, USA. mmaher@partners.org

ABSTRACT
Enhanced z-axis coverage with thin overlapping slices in breath-hold acquisitions with multidetector CT (MDCT) has considerably enhanced the quality of multiplanar 3D reconstruction. This pictorial essay describes the improvements in 3D reconstruction and technical aspects of 3D reconstruction and rendering techniques available for abdominal imaging. Clinical applications of 3D imaging in abdomen including liver, pancreaticobiliary system, urinary and gastrointestinal tracts and imaging before and after transplantation are discussed. In addition, this article briefly discusses the disadvantages of thin-slice acquisitions including increasing numbers of transverse images, which must be reviewed by the radiologist.

Show MeSH
Related in: MedlinePlus