May-Thurner syndrome

Correlation between digital subtraction and computed tomography venography

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3 Citations (Scopus)

Abstract

Background/Purpose: Digital subtraction venography (DSV) and computed tomography venography (CTV) are both recommended for diagnosing May-Thurner syndrome. The literature contains little information on the correlation between these imaging tools. We performed a retrospective case-series study to investigate this correlation. Methods: From August 2009 to August 2010, 42 patients with May-Thurner syndrome (34 women, 8 men; mean age: 52.8±13.5 years) received DSV followed by CTV. The DSV was used to evaluate the degree of venous reflux, reflux start-up time, and flow time. By CTV, the ratio of cross-sectional area and the ratio of diameter between the narrowest region to that of the caudal part of the left common iliac vein were calculated. The correlation between these variables for DSV versus CTV was calculated using Spearman's rank correlation coefficients. Results: In DSV evaluation of the extent of reflux, 19.0% of cases were classified as Grade 0, 11.9% as Grade I, 28.6% as Grade II, and 40.5% as Grade III. The mean±standard deviation flow times for these groups were 2.00±0.38 seconds, 1.75±0.29 seconds, 1.67±0.72 seconds, and 1.81±0.68 seconds, the mean time for total patients was 1.76±0.78 seconds. The reflux start-up times for Grades I-III were 2.00±1.00 seconds, 1.80±1.23 seconds, and 1.40±0.49 seconds, and the mean time was 1.6±0.8 seconds. In CTV, the mean area ratio and diameter ratio were 0.78±0.22 (range, 0.22-1.27) and 0.75±0.24 (range, 0.33-1.25). The reflux start-up time showed a positive correlation with the cross-sectional area ratio (r=0.518; p=0.002) and diameter ratio (r=0.413; p=0.019). Conclusion: The cross-sectional area ratio and diameter ratio in CTV correlate with the reflux start-up time in DSV. For May-Thurner syndrome, both CTV and DSV provide essential information for diagnosis and evaluation of the disease. The positive correlation between anatomical and hemodynamic properties corresponds with the underlying pathophysiology.

Original languageEnglish
Pages (from-to)363-368
Number of pages6
JournalJournal of the Formosan Medical Association = Taiwan yi zhi
Volume114
Issue number4
DOIs
Publication statusPublished - Apr 1 2015

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May-Thurner Syndrome
Phlebography
Tomography
Iliac Vein

Keywords

  • Computed tomography
  • Digital subtraction venography
  • May-Thurner syndrome

ASJC Scopus subject areas

  • Medicine(all)

Cite this

@article{787ffc067ee94e2a85e0e37f428bb6e3,
title = "May-Thurner syndrome: Correlation between digital subtraction and computed tomography venography",
abstract = "Background/Purpose: Digital subtraction venography (DSV) and computed tomography venography (CTV) are both recommended for diagnosing May-Thurner syndrome. The literature contains little information on the correlation between these imaging tools. We performed a retrospective case-series study to investigate this correlation. Methods: From August 2009 to August 2010, 42 patients with May-Thurner syndrome (34 women, 8 men; mean age: 52.8±13.5 years) received DSV followed by CTV. The DSV was used to evaluate the degree of venous reflux, reflux start-up time, and flow time. By CTV, the ratio of cross-sectional area and the ratio of diameter between the narrowest region to that of the caudal part of the left common iliac vein were calculated. The correlation between these variables for DSV versus CTV was calculated using Spearman's rank correlation coefficients. Results: In DSV evaluation of the extent of reflux, 19.0{\%} of cases were classified as Grade 0, 11.9{\%} as Grade I, 28.6{\%} as Grade II, and 40.5{\%} as Grade III. The mean±standard deviation flow times for these groups were 2.00±0.38 seconds, 1.75±0.29 seconds, 1.67±0.72 seconds, and 1.81±0.68 seconds, the mean time for total patients was 1.76±0.78 seconds. The reflux start-up times for Grades I-III were 2.00±1.00 seconds, 1.80±1.23 seconds, and 1.40±0.49 seconds, and the mean time was 1.6±0.8 seconds. In CTV, the mean area ratio and diameter ratio were 0.78±0.22 (range, 0.22-1.27) and 0.75±0.24 (range, 0.33-1.25). The reflux start-up time showed a positive correlation with the cross-sectional area ratio (r=0.518; p=0.002) and diameter ratio (r=0.413; p=0.019). Conclusion: The cross-sectional area ratio and diameter ratio in CTV correlate with the reflux start-up time in DSV. For May-Thurner syndrome, both CTV and DSV provide essential information for diagnosis and evaluation of the disease. The positive correlation between anatomical and hemodynamic properties corresponds with the underlying pathophysiology.",
keywords = "Computed tomography, Digital subtraction venography, May-Thurner syndrome",
author = "Kuo, {Ying Sheng} and Chi-Jen Chen and Chen, {Jiann Jy} and Lin, {Cheng Hong} and Ku, {Jan Wen} and Hsu, {Hui Ling} and Ying-Chi Tseng",
year = "2015",
month = "4",
day = "1",
doi = "10.1016/j.jfma.2012.12.004",
language = "English",
volume = "114",
pages = "363--368",
journal = "Journal of the Formosan Medical Association",
issn = "0929-6646",
publisher = "Elsevier Science Publishers B.V.",
number = "4",

}

TY - JOUR

T1 - May-Thurner syndrome

T2 - Correlation between digital subtraction and computed tomography venography

AU - Kuo, Ying Sheng

AU - Chen, Chi-Jen

AU - Chen, Jiann Jy

AU - Lin, Cheng Hong

AU - Ku, Jan Wen

AU - Hsu, Hui Ling

AU - Tseng, Ying-Chi

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Background/Purpose: Digital subtraction venography (DSV) and computed tomography venography (CTV) are both recommended for diagnosing May-Thurner syndrome. The literature contains little information on the correlation between these imaging tools. We performed a retrospective case-series study to investigate this correlation. Methods: From August 2009 to August 2010, 42 patients with May-Thurner syndrome (34 women, 8 men; mean age: 52.8±13.5 years) received DSV followed by CTV. The DSV was used to evaluate the degree of venous reflux, reflux start-up time, and flow time. By CTV, the ratio of cross-sectional area and the ratio of diameter between the narrowest region to that of the caudal part of the left common iliac vein were calculated. The correlation between these variables for DSV versus CTV was calculated using Spearman's rank correlation coefficients. Results: In DSV evaluation of the extent of reflux, 19.0% of cases were classified as Grade 0, 11.9% as Grade I, 28.6% as Grade II, and 40.5% as Grade III. The mean±standard deviation flow times for these groups were 2.00±0.38 seconds, 1.75±0.29 seconds, 1.67±0.72 seconds, and 1.81±0.68 seconds, the mean time for total patients was 1.76±0.78 seconds. The reflux start-up times for Grades I-III were 2.00±1.00 seconds, 1.80±1.23 seconds, and 1.40±0.49 seconds, and the mean time was 1.6±0.8 seconds. In CTV, the mean area ratio and diameter ratio were 0.78±0.22 (range, 0.22-1.27) and 0.75±0.24 (range, 0.33-1.25). The reflux start-up time showed a positive correlation with the cross-sectional area ratio (r=0.518; p=0.002) and diameter ratio (r=0.413; p=0.019). Conclusion: The cross-sectional area ratio and diameter ratio in CTV correlate with the reflux start-up time in DSV. For May-Thurner syndrome, both CTV and DSV provide essential information for diagnosis and evaluation of the disease. The positive correlation between anatomical and hemodynamic properties corresponds with the underlying pathophysiology.

AB - Background/Purpose: Digital subtraction venography (DSV) and computed tomography venography (CTV) are both recommended for diagnosing May-Thurner syndrome. The literature contains little information on the correlation between these imaging tools. We performed a retrospective case-series study to investigate this correlation. Methods: From August 2009 to August 2010, 42 patients with May-Thurner syndrome (34 women, 8 men; mean age: 52.8±13.5 years) received DSV followed by CTV. The DSV was used to evaluate the degree of venous reflux, reflux start-up time, and flow time. By CTV, the ratio of cross-sectional area and the ratio of diameter between the narrowest region to that of the caudal part of the left common iliac vein were calculated. The correlation between these variables for DSV versus CTV was calculated using Spearman's rank correlation coefficients. Results: In DSV evaluation of the extent of reflux, 19.0% of cases were classified as Grade 0, 11.9% as Grade I, 28.6% as Grade II, and 40.5% as Grade III. The mean±standard deviation flow times for these groups were 2.00±0.38 seconds, 1.75±0.29 seconds, 1.67±0.72 seconds, and 1.81±0.68 seconds, the mean time for total patients was 1.76±0.78 seconds. The reflux start-up times for Grades I-III were 2.00±1.00 seconds, 1.80±1.23 seconds, and 1.40±0.49 seconds, and the mean time was 1.6±0.8 seconds. In CTV, the mean area ratio and diameter ratio were 0.78±0.22 (range, 0.22-1.27) and 0.75±0.24 (range, 0.33-1.25). The reflux start-up time showed a positive correlation with the cross-sectional area ratio (r=0.518; p=0.002) and diameter ratio (r=0.413; p=0.019). Conclusion: The cross-sectional area ratio and diameter ratio in CTV correlate with the reflux start-up time in DSV. For May-Thurner syndrome, both CTV and DSV provide essential information for diagnosis and evaluation of the disease. The positive correlation between anatomical and hemodynamic properties corresponds with the underlying pathophysiology.

KW - Computed tomography

KW - Digital subtraction venography

KW - May-Thurner syndrome

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U2 - 10.1016/j.jfma.2012.12.004

DO - 10.1016/j.jfma.2012.12.004

M3 - Article

VL - 114

SP - 363

EP - 368

JO - Journal of the Formosan Medical Association

JF - Journal of the Formosan Medical Association

SN - 0929-6646

IS - 4

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