Limits...
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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Related in: MedlinePlus

CT cholangiogram of dilated biliary ductal system in a 47-year-old woman with cholangiocarcinoma at porta hepatis (arrow). Axial CT image (A) shows dilated intrahepatic biliary system with hypodense mass at the porta hepatis. Minimum intensity projection (B) rendering provides a "cholangiographic" view of the dilated intrahepatic ductal system with mass in the porta hepatis region.
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Figure 6: CT cholangiogram of dilated biliary ductal system in a 47-year-old woman with cholangiocarcinoma at porta hepatis (arrow). Axial CT image (A) shows dilated intrahepatic biliary system with hypodense mass at the porta hepatis. Minimum intensity projection (B) rendering provides a "cholangiographic" view of the dilated intrahepatic ductal system with mass in the porta hepatis region.

Mentions: In addition, for detection of small pancreatic tumors, 3D reconstruction can aid in determining the level of dilated pancreatic and biliary ducts which is fundamental to localization of small or subtle pancreatic tumors, if viewed in conjunction with axial source images (9). Curved MPR can clearly demonstrate the dilated main pancreatic duct in patients with chronic pancreatitis, pancreatic cancer and mucin-producing pancreatic tumors (9, 10). Multiplanar CT pancreatography and distal cholangiography improves depiction of the pancreatic duct and bile ducts with image quality, which approaches that of ERCP. Park et al. (10) have reported the value of 3D CT cholangiography using MinIP projection to determine the level and cause of biliary obstruction (Figs. 6-8).


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)

CT cholangiogram of dilated biliary ductal system in a 47-year-old woman with cholangiocarcinoma at porta hepatis (arrow). Axial CT image (A) shows dilated intrahepatic biliary system with hypodense mass at the porta hepatis. Minimum intensity projection (B) rendering provides a "cholangiographic" view of the dilated intrahepatic ductal system with mass in the porta hepatis region.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 6: CT cholangiogram of dilated biliary ductal system in a 47-year-old woman with cholangiocarcinoma at porta hepatis (arrow). Axial CT image (A) shows dilated intrahepatic biliary system with hypodense mass at the porta hepatis. Minimum intensity projection (B) rendering provides a "cholangiographic" view of the dilated intrahepatic ductal system with mass in the porta hepatis region.
Mentions: In addition, for detection of small pancreatic tumors, 3D reconstruction can aid in determining the level of dilated pancreatic and biliary ducts which is fundamental to localization of small or subtle pancreatic tumors, if viewed in conjunction with axial source images (9). Curved MPR can clearly demonstrate the dilated main pancreatic duct in patients with chronic pancreatitis, pancreatic cancer and mucin-producing pancreatic tumors (9, 10). Multiplanar CT pancreatography and distal cholangiography improves depiction of the pancreatic duct and bile ducts with image quality, which approaches that of ERCP. Park et al. (10) have reported the value of 3D CT cholangiography using MinIP projection to determine the level and cause of biliary obstruction (Figs. 6-8).

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