Diagnostic Value of T1-Weighted Gradient-Echo In-Phase Images Added to MRCP in Differentiation of Hepatolithiasis and Intrahepatic Pneumobilia

Erden, Ayşe; Haliloğlu, Nuray; Genç, Yasemin; Erden, İlhan

doi:10.2214/ajr.12.10359

Cited by 17 publications

(9 citation statements)

References 24 publications

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“… 19 Some investigators have reported spontaneous hyperintensity on T1-weighted images in hepatolithiasis. 20 , 21 Although a few intrahepatic stones presented high signal intensity or isosignal intensity on T1-weighted images, in our study, stones commonly appeared as intraluminal defects on low signal intensity on both T1- and T2-weighted images. These findings are consistent with the fact that low signal intensity in intrahepatic duct stones on T1- and T2-weighted images corresponded to cholesterol stones.…”

Section: Discussioncontrasting

confidence: 48%

“…The characteristics of intrahepatic calculi on MRI rely on their chemical composition (19). Some investigators have reported spontaneous hyper intensity on T1-weighted images in hepatolithiasis (20,21). Although a few intrahepatic stones presented high or iso signal intensity on T1 weighted images, in our study, stones commonly appeared as intraluminal defects on low signal intensity on both T1 and T2 weighted images.…”

Section: J O U R N a L P R E -P R O O F Mr Characteristicsmentioning

confidence: 44%

See 1 more Smart Citation

ABCB4 variant is associated with hepatobiliary MR abnormalities in people with low-phospholipid-associated cholelithiasis syndrome

Biyoukar¹,

Corpechot²,

Mouhadi³

et al. 2022

JHEP Reports

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Section: Discussioncontrasting

confidence: 48%

Section: J O U R N a L P R E -P R O O F Mr Characteristicsmentioning

confidence: 44%

ABCB4 variant is associated with hepatobiliary MR abnormalities in people with low-phospholipid-associated cholelithiasis syndrome

Biyoukar¹,

Corpechot²,

Mouhadi³

et al. 2022

JHEP Reports

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“…Since some gallstones are reported to be hyperintense on T1WI, T1WI in combination with T2WI can help avoid these pitfalls. 16,[32][33][34] Nevertheless, the strategy works out only for PS and some OS including paramagnetic metal chelates and usually not for CS. 17,18 Indeed, we have observed that all BC appeared distinctly positive signal on fs-T1WI; whereas, 9 out of 15 CC were faintly positive or negative signal on fs-T1WI.…”

Section: Discussionmentioning

confidence: 99%

Three Dimensional Ultra-short Echo Time MRI Can Depict Cholesterol Components of Gallstones Bright

Takahashi

Takehara

Fujisaki³

et al. 2021

magn reson med sci

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Purpose Non-calcified cholesterol stones that are small in size are hard to be depicted on CT or magnetic resonance cholangiopancreatography. This institutional review board (IRB)-approved retrospective in vitro study aims to characterize contrast behaviors of 3 main components of the gallstones, i.e., cholesterol component (CC), bilirubin calcium component (BC) and CaCO 3 (CO) on 3D radial scan with ultrashort TE (UTE) MRI, and to test the capability of depicting CC of gallstones as bright signals as compared to background saline. Methods Fourteen representative gallstones from 14 patients, including 15 CC, 6 BC and 4 CO, were enrolled. The gallstones underwent MRI including fat-saturated T1-weighted image (fs-T1WI) and UTE MRI with dual echoes. The contrast-to-noise ratio (CNR) and the chemical analysis for the 25 portions of the stones were compared. Results BC was bright on fs-T1WI, which did not change dramatically on UTE MRI and the signal did not remain on UTE subtraction image between dual echoes. Whereas the CC was negative or faintly positive signal on fs-T1WI, bright signal on UTE MRI and the contrast remained even higher on the UTE subtraction, which reflected their short T2 values. Median CNRs and standard errors of the segments on each imaging were as follows: on fs-T1WI, −10.2 ± 4.2 for CC, 149.7 ± 27.6 for BC and 37.9 ± 14.3 for CO; on UTE MRI first echo, 16.7 ± 3.3 for CC, 74.9 ± 21.3 for BC and 17.7 ± 8.4 for CO; on UTE subtraction image, 30.2 ±2.0 for CC, −11.2 ± 5.4 for BC and 17.8 ± 10.7 for CO. Linear correlations between CNRs and cholesterol concentrations were observed on fs-T1WI with r = −0.885, ( P < 0.0001), UTE MRI first echo r = −0.524 ( P = 0.0072) and UTE subtraction with r = 0.598 ( P = 0.0016). Conclusion UTE MRI and UTE subtraction can depict CC bright.

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“…However, its use in the setting of biliary stents has not been evaluated. MRCP with T1-weighted gradient-echo in-phase images have a reported sensitivity of 98.5% to detect pneumobilia [15] and it may be used to evaluate for the loss of pneumobilia in our patient population.…”

Section: Discussionmentioning

confidence: 99%

Resolution of pneumobilia as a predictor of biliary stent occlusion

2015

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Diagnostic Value of T1-Weighted Gradient-Echo In-Phase Images Added to MRCP in Differentiation of Hepatolithiasis and Intrahepatic Pneumobilia

Abstract: The addition of T1-weighted gradient-echo in-phase images to standard MRCP sequences improves the detection and differentiation of hepatolithiasis and intrahepatic pneumobilia.

Cited by 17 publications

References 24 publications

ABCB4 variant is associated with hepatobiliary MR abnormalities in people with low-phospholipid-associated cholelithiasis syndrome

ABCB4 variant is associated with hepatobiliary MR abnormalities in people with low-phospholipid-associated cholelithiasis syndrome

Three Dimensional Ultra-short Echo Time MRI Can Depict Cholesterol Components of Gallstones Bright

Resolution of pneumobilia as a predictor of biliary stent occlusion

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