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MRI of Gallstones with Different Compositions

¹ Department of Radiology, National Cheng Kung University Hospital, Tainan 704, Taiwan.
² Department of Internal Medicine, National Cheng Kung University Hospital, 138 Sheng-Li Rd., Tainan 704, Taiwan.
³ Department of Surgery, National Cheng Kung University Hospital, Tainan 704, Taiwan.
⁴ Department of Chemical Engineering, College of Engineering, National Cheng Kung University, Tainan 704, Taiwan.

View larger version (123K): [in a new window]   Fig. 1A. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. T1-weighted 3D fast spoiled gradient-echo MR image discloses hyperintense gallstone (arrowhead) in distal common bile duct.

View larger version (120K): [in a new window]   Fig. 2A. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Both T1-weighted 3D fast spoiled gradient-echo (A) and in-phase fast spoiled gradient-echo (B) MR images disclosed hypointense gallstone surrounded by hyperintense gallbladder bile (arrow).

View larger version (124K): [in a new window]   Fig. 2B. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Both T1-weighted 3D fast spoiled gradient-echo (A) and in-phase fast spoiled gradient-echo (B) MR images disclosed hypointense gallstone surrounded by hyperintense gallbladder bile (arrow).

View larger version (117K): [in a new window]   Fig. 1C. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. T2-weighted single-shot fast spin-echo MR image shows gallstone is hypointense and is seen as filling defect surrounded by hyperintense bile (arrowhead).

View larger version (122K): [in a new window]   Fig. 2C. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. T2-weighted single-shot fast spin-echo image also shows similar findings (arrow) as seen on T1-weighted images.

View larger version (122K): [in a new window]   Fig. 1B. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. T1-weighted in-phase fast spoiled gradient-echo MR image obtained at same level as A shows gallstone became isointense (arrowhead) and could not be detected.

View larger version (147K): [in a new window]   Fig. 1D. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. In vitro 3D fast spoiled gradient-echo MR image shows gallstone is hyperintense.

View larger version (155K): [in a new window]   Fig. 1E. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. In vitro in-phase fast spoiled gradient-echo MR images of gallstone acquired with (E) and without (F) fat saturation shows gallstone appeared as hypointense structure with outer margin of hyperintensity.

View larger version (156K): [in a new window]   Fig. 1F. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. In vitro in-phase fast spoiled gradient-echo MR images of gallstone acquired with (E) and without (F) fat saturation shows gallstone appeared as hypointense structure with outer margin of hyperintensity.

View larger version (141K): [in a new window]   Fig. 1G. —In vivo and in vitro MRI of pigment gallstone obtained from 83-year-old man with common bile duct stone. In vitro T2-weighted single-shot fast spin-echo MR image shows gallstone as hypointense.

View larger version (161K): [in a new window]   Fig. 2D. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Gallstone appeared as hypointense on in vitro T1-weighted 3D fast spoiled gradient-echo image (D), inphase fast spoiled gradient-echo image with (E) and without (F) fat saturation, and T2-weighted single-shot fast spin-echo image (G).

View larger version (152K): [in a new window]   Fig. 2E. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Gallstone appeared as hypointense on in vitro T1-weighted 3D fast spoiled gradient-echo image (D), inphase fast spoiled gradient-echo image with (E) and without (F) fat saturation, and T2-weighted single-shot fast spin-echo image (G).

View larger version (166K): [in a new window]   Fig. 2F. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Gallstone appeared as hypointense on in vitro T1-weighted 3D fast spoiled gradient-echo image (D), inphase fast spoiled gradient-echo image with (E) and without (F) fat saturation, and T2-weighted single-shot fast spin-echo image (G).

View larger version (149K): [in a new window]   Fig. 2G. —In vivo and in vitro MRI of cholesterol gallstone retrieved from 32-year-old woman with symptomatic gallbladder stone. Gallstone appeared as hypointense on in vitro T1-weighted 3D fast spoiled gradient-echo image (D), inphase fast spoiled gradient-echo image with (E) and without (F) fat saturation, and T2-weighted single-shot fast spin-echo image (G).

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