Correlation of common bile duct diameter by ultrasound and cholangiography

E. P. Bouras, K. M. McGrath, D. Ciaccia, J. E. Onken

Research output: Contribution to journalArticle

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Abstract

Common bile duct (CBD) diameter is often measured during ultrasound (U/S) of the liver and biliary tree. However, to date, no study has directly compared the measurements obtained during U/S to those obtained at ERC. Objectives: (I) To assess the degree of correlation between CBD diameter as measured at U/S and ERC, and (2) to see if that correlation was affected by bile duct diameter or cholangiographic findings. Methods: Patients whose CBD was measured by U/S and ERC within a 24 hour period were evaluated. No patient had any additional intervention between the two measurements. Data included age, CBD diameter at U/S and ERC (magnification correction=0.7), and findings at cholangiography. Comparisons were made using Pearson Correlation Coefficients (PCC). Results: 43 patients with a mean age of 52.4 years were studied; 70% were female. 21 patients had abnormal cholangiograms (11 strictures, 5 choledocholithiasis, 4 non-specific CBD dilation, and 1 leak). Overall mean CBD diameter was 7.4 mm by U/S and 8.1 mm by ERC (PCC=.69, p=.0001 ). In the group with normal cholangiograms, the mean CBD diameter was 5.0 mm at U/S and 6.0 mm by ERC (PCC=.66, p=.001). For those with abnormal cholangiograms, mean CBD diameter was 9.6 mm by U/S and 10.0 mm by ERC (PCC=.57, p=.006). Eighteen patients had a CBD diameter at U/S of <6.0 mm. Of these, 5 (28%) had abnormal cholangiograms, and the PCC for U/S and ERC measurements fell to 35 (p>.05). Patient Population CBD at U/S (mean) CBD at ERC (mean) PCC p-value All 7.4mm 8.1 mm .69 .0001 Normal Cholangio 5.0 mm 6.0 mm .66 .001 Abnormal Cholangio 9.6 mm 10.0 mm .57 .006 CBD ≥6.0 mm at U/S 10.2 mm 9.9 mm .55 .005 CBD <6.0 mm at U/S 3.7 mm 5.6 mm .35 .15 Conclusions: (1) Measurements of CBD diameter by U/S and ERC show good correlation overall, (2) this correlation is maintained in patients with both normal and abnormal cholangiograms, (3) 28% of patients with a CBD diameter <6.0 mm at U/S had abnormal cholangiograms, and (4) there is poor correlation between U/S and ERC in the measurement of CBD diameter in patients whose CBD diameter is <6.0 mm at U/S.

Original languageEnglish (US)
Pages (from-to)375
Number of pages1
JournalGastrointestinal Endoscopy
Volume43
Issue number4
StatePublished - 1996
Externally publishedYes

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Cholangiography
Common Bile Duct
Choledocholithiasis
Biliary Tract
Bile Ducts

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Bouras, E. P., McGrath, K. M., Ciaccia, D., & Onken, J. E. (1996). Correlation of common bile duct diameter by ultrasound and cholangiography. Gastrointestinal Endoscopy, 43(4), 375.

Correlation of common bile duct diameter by ultrasound and cholangiography. / Bouras, E. P.; McGrath, K. M.; Ciaccia, D.; Onken, J. E.

In: Gastrointestinal Endoscopy, Vol. 43, No. 4, 1996, p. 375.

Research output: Contribution to journalArticle

Bouras, EP, McGrath, KM, Ciaccia, D & Onken, JE 1996, 'Correlation of common bile duct diameter by ultrasound and cholangiography', Gastrointestinal Endoscopy, vol. 43, no. 4, pp. 375.
Bouras, E. P. ; McGrath, K. M. ; Ciaccia, D. ; Onken, J. E. / Correlation of common bile duct diameter by ultrasound and cholangiography. In: Gastrointestinal Endoscopy. 1996 ; Vol. 43, No. 4. pp. 375.
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title = "Correlation of common bile duct diameter by ultrasound and cholangiography",
abstract = "Common bile duct (CBD) diameter is often measured during ultrasound (U/S) of the liver and biliary tree. However, to date, no study has directly compared the measurements obtained during U/S to those obtained at ERC. Objectives: (I) To assess the degree of correlation between CBD diameter as measured at U/S and ERC, and (2) to see if that correlation was affected by bile duct diameter or cholangiographic findings. Methods: Patients whose CBD was measured by U/S and ERC within a 24 hour period were evaluated. No patient had any additional intervention between the two measurements. Data included age, CBD diameter at U/S and ERC (magnification correction=0.7), and findings at cholangiography. Comparisons were made using Pearson Correlation Coefficients (PCC). Results: 43 patients with a mean age of 52.4 years were studied; 70{\%} were female. 21 patients had abnormal cholangiograms (11 strictures, 5 choledocholithiasis, 4 non-specific CBD dilation, and 1 leak). Overall mean CBD diameter was 7.4 mm by U/S and 8.1 mm by ERC (PCC=.69, p=.0001 ). In the group with normal cholangiograms, the mean CBD diameter was 5.0 mm at U/S and 6.0 mm by ERC (PCC=.66, p=.001). For those with abnormal cholangiograms, mean CBD diameter was 9.6 mm by U/S and 10.0 mm by ERC (PCC=.57, p=.006). Eighteen patients had a CBD diameter at U/S of <6.0 mm. Of these, 5 (28{\%}) had abnormal cholangiograms, and the PCC for U/S and ERC measurements fell to 35 (p>.05). Patient Population CBD at U/S (mean) CBD at ERC (mean) PCC p-value All 7.4mm 8.1 mm .69 .0001 Normal Cholangio 5.0 mm 6.0 mm .66 .001 Abnormal Cholangio 9.6 mm 10.0 mm .57 .006 CBD ≥6.0 mm at U/S 10.2 mm 9.9 mm .55 .005 CBD <6.0 mm at U/S 3.7 mm 5.6 mm .35 .15 Conclusions: (1) Measurements of CBD diameter by U/S and ERC show good correlation overall, (2) this correlation is maintained in patients with both normal and abnormal cholangiograms, (3) 28{\%} of patients with a CBD diameter <6.0 mm at U/S had abnormal cholangiograms, and (4) there is poor correlation between U/S and ERC in the measurement of CBD diameter in patients whose CBD diameter is <6.0 mm at U/S.",
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T1 - Correlation of common bile duct diameter by ultrasound and cholangiography

AU - Bouras, E. P.

AU - McGrath, K. M.

AU - Ciaccia, D.

AU - Onken, J. E.

PY - 1996

Y1 - 1996

N2 - Common bile duct (CBD) diameter is often measured during ultrasound (U/S) of the liver and biliary tree. However, to date, no study has directly compared the measurements obtained during U/S to those obtained at ERC. Objectives: (I) To assess the degree of correlation between CBD diameter as measured at U/S and ERC, and (2) to see if that correlation was affected by bile duct diameter or cholangiographic findings. Methods: Patients whose CBD was measured by U/S and ERC within a 24 hour period were evaluated. No patient had any additional intervention between the two measurements. Data included age, CBD diameter at U/S and ERC (magnification correction=0.7), and findings at cholangiography. Comparisons were made using Pearson Correlation Coefficients (PCC). Results: 43 patients with a mean age of 52.4 years were studied; 70% were female. 21 patients had abnormal cholangiograms (11 strictures, 5 choledocholithiasis, 4 non-specific CBD dilation, and 1 leak). Overall mean CBD diameter was 7.4 mm by U/S and 8.1 mm by ERC (PCC=.69, p=.0001 ). In the group with normal cholangiograms, the mean CBD diameter was 5.0 mm at U/S and 6.0 mm by ERC (PCC=.66, p=.001). For those with abnormal cholangiograms, mean CBD diameter was 9.6 mm by U/S and 10.0 mm by ERC (PCC=.57, p=.006). Eighteen patients had a CBD diameter at U/S of <6.0 mm. Of these, 5 (28%) had abnormal cholangiograms, and the PCC for U/S and ERC measurements fell to 35 (p>.05). Patient Population CBD at U/S (mean) CBD at ERC (mean) PCC p-value All 7.4mm 8.1 mm .69 .0001 Normal Cholangio 5.0 mm 6.0 mm .66 .001 Abnormal Cholangio 9.6 mm 10.0 mm .57 .006 CBD ≥6.0 mm at U/S 10.2 mm 9.9 mm .55 .005 CBD <6.0 mm at U/S 3.7 mm 5.6 mm .35 .15 Conclusions: (1) Measurements of CBD diameter by U/S and ERC show good correlation overall, (2) this correlation is maintained in patients with both normal and abnormal cholangiograms, (3) 28% of patients with a CBD diameter <6.0 mm at U/S had abnormal cholangiograms, and (4) there is poor correlation between U/S and ERC in the measurement of CBD diameter in patients whose CBD diameter is <6.0 mm at U/S.

AB - Common bile duct (CBD) diameter is often measured during ultrasound (U/S) of the liver and biliary tree. However, to date, no study has directly compared the measurements obtained during U/S to those obtained at ERC. Objectives: (I) To assess the degree of correlation between CBD diameter as measured at U/S and ERC, and (2) to see if that correlation was affected by bile duct diameter or cholangiographic findings. Methods: Patients whose CBD was measured by U/S and ERC within a 24 hour period were evaluated. No patient had any additional intervention between the two measurements. Data included age, CBD diameter at U/S and ERC (magnification correction=0.7), and findings at cholangiography. Comparisons were made using Pearson Correlation Coefficients (PCC). Results: 43 patients with a mean age of 52.4 years were studied; 70% were female. 21 patients had abnormal cholangiograms (11 strictures, 5 choledocholithiasis, 4 non-specific CBD dilation, and 1 leak). Overall mean CBD diameter was 7.4 mm by U/S and 8.1 mm by ERC (PCC=.69, p=.0001 ). In the group with normal cholangiograms, the mean CBD diameter was 5.0 mm at U/S and 6.0 mm by ERC (PCC=.66, p=.001). For those with abnormal cholangiograms, mean CBD diameter was 9.6 mm by U/S and 10.0 mm by ERC (PCC=.57, p=.006). Eighteen patients had a CBD diameter at U/S of <6.0 mm. Of these, 5 (28%) had abnormal cholangiograms, and the PCC for U/S and ERC measurements fell to 35 (p>.05). Patient Population CBD at U/S (mean) CBD at ERC (mean) PCC p-value All 7.4mm 8.1 mm .69 .0001 Normal Cholangio 5.0 mm 6.0 mm .66 .001 Abnormal Cholangio 9.6 mm 10.0 mm .57 .006 CBD ≥6.0 mm at U/S 10.2 mm 9.9 mm .55 .005 CBD <6.0 mm at U/S 3.7 mm 5.6 mm .35 .15 Conclusions: (1) Measurements of CBD diameter by U/S and ERC show good correlation overall, (2) this correlation is maintained in patients with both normal and abnormal cholangiograms, (3) 28% of patients with a CBD diameter <6.0 mm at U/S had abnormal cholangiograms, and (4) there is poor correlation between U/S and ERC in the measurement of CBD diameter in patients whose CBD diameter is <6.0 mm at U/S.

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