A three-dimensional gadolinium-enhanced MR venography technique for imaging central veins.

Thornton, Mark; Ryan, Rita M.; Varghese, Joby; Farrell, Michael; Lucey, Brian C.; Lee, M J

doi:10.2214/ajr.173.4.10511166

Cited by 94 publications

(32 citation statements)

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“…Kaura et al [12] studied the biometrics of the IVC and concluded that venography alone is not an ideal method to assess true IVC diameters. Various authors recommend ultrasonography [5][6][7]13] , intravascular ultrasonography [2] , computed tomography (CT) [14][15][16] , and even magnetic resonance imaging [9,17] for its morphologic study. To our knowledge, there are no prior studies that correlate the variation in venous blood pressure with caliber and morphology of IVC during respiration and Valsalva maneuver.…”

Section: Introductionmentioning

confidence: 99%

Influence of breathing movements and Valsalva maneuver on vena caval dynamics

Laborda

Sierre

Malvè

et al. 2014

WJR

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AIM:To study changes produced within the inferior vena cava (IVC) during respiratory movements and identify their possible clinical implications. METHODS:This study included 100 patients (46 women; 54 men) over 18 years of age who required an abdominal computed tomography (CT) and central venous access. IVC cross-sectional areas were measured on CT scans at three levels, suprarenal (SR), juxtarenal (JR) and infrarenal (IR), during neutral breathing and again during the Valsalva maneuver. All patients were instructed on how to perform a correct Valsalva maneuver. In order to reduce the total radiation dose in our patients, low-dose CT protocols were used in all patients. The venous blood pressure (systolic, diastolic and mean) was invasively measured at the same three levels with neutral breathing and the Valsalva maneuver during venous port implantation. From CT scans, threedimensional models of the IVC were constructed and a collapsibility index was calculated for each patient. These data were then correlated with venous pressures and cross-sectional areas. RESULTS:The mean patient age was 51.64 ± 12.01 years. The areas of the ellipse in neutral breathing were 394.49 ± 85.83 (SR), 380.10 ± 74.55 (JR), and 342.72 ± 49.77 mm 2 (IR), and 87.46 ± 18.35 (SR), 92.64 ± 15.36 (JR) and 70.05 ± 9.64 mm 2 (IR) during the Valsalva (P s < 0.001). There was a correlation between areas in neutral breathing and in the Valsalva maneuver (P < 0.05 in all areas). Large areas decreased more than smaller areas. The collapsibility indices were 0.49 ± 0.06 (SR), 0.50 ± 0.04 (JR) and 0.50 ± 0.04 (IR), with no significant differences in any region. Reconstructed three-dimensional models showed a flattening of the IVC during Valsalva, adopting an ellipsoid cross-sectional shape. The mean pressures with neutral breathing were 9.44 ± 1.78 (SR), 9.40 ± 1.44 (JR) and 8.84 ± 1.03 mmHg (IR), and 81.08 ± 21.82 (SR), 79.88 ± 19.01 (JR) and 74.04 ± 16.56 mmHg (IR) during Valsalva (P s < 0.001). There was a negative correlation between cross-sectional caval area and venous blood pressure, but this was not statistically significant in any of the cases. There was a significant correlation between diastolic and mean pressures measured during neutral breathing and in Valsalva. CONCLUSION:Respiratory movements have a major influence on IVC dynamics. The increase in intracaval pressure during Valsalva results in a significant de-

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Section: Introductionmentioning

confidence: 99%

Influence of breathing movements and Valsalva maneuver on vena caval dynamics

Laborda

Sierre

Malvè

et al. 2014

WJR

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“…Magnetic resonance venography has been studied for diagnosis of DVT in the upper venous system in adults and children. [36][37][38][39] The KIDCAT study originally proposed to assess magnetic resonance venography as a fourth method, in comparison with the conventional tests. However, magnetic resonance venography was impossible to perform in children shortly after cardiac surgery, because of the metal wires used to close the sternotomy.…”

Section: Discussionmentioning

confidence: 99%

Incidence and Diagnosis of Thrombosis in Children With Short-Term Central Venous Lines of the Upper Venous System

Hanslik¹,

Thom²,

Haumer

et al. 2008

Pediatrics

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The incidence of central venous line-related deep venous thrombosis in children with short-term central venous lines is high and comparable to reports for children with long-term central venous lines. Sensitivities of venography, venous ultrasonography, and echocardiography in children vary depending on the affected venous segment. A combination of diagnostic tests is required for sensitive detection of central venous line-related deep venous thrombosis in the upper venous system.

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“…By using gadolinium to shorten the T1 value of the blood, it overcomes flow artifacts and saturation effects in TOF and PC. Moreover, it permits assessment of liver parenchyma and extravascular abnormalities during investigation of the vascular system [12,15,17] . So 3D CE MRA has many advantages over the currently more conventional methods for imaging the BCS.…”

Section: Discussionmentioning

confidence: 99%

“…However, some limitations are also existed in each of these modalities [2][3][4][5][6][7] . Three-dimensional contrast-enhanced magnetic resonance angiography (3D CE MRA) is a new technique and widely used in the imaging of the arterial system, portal venous system and central venous system [8][9][10][11][12][13][14][15][16] . However, to our knowledge, few studies have been reported so far concerning its use in the diagnosis of BCS [17] .…”

Section: Introductionmentioning

confidence: 99%

Budd-Chiari syndrome: Diagnosis with three-dimensional contrast-enhanced magnetic resonance angiography

Lin

Chen²,

Zhou³

et al. 2003

WJG

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AIM:To evaluate the role of three-dimensional contrastenhanced magnetic resonance angiography (3D CE MRA) in the diagnosis of Budd-Chiari syndrome (BCS). METHODS:Twenty-three patients with BCS underwent 3D CE MRA examination, in which 13 cases were secondary to either hepatocellular carcinoma (11 cases), right adrenal carcinoma (1 case) or thrombophlebitis (1 case) and 10 suffered from primary BCS. The patency of the inferior vena cava (IVC), hepatic and portal veins as well as the presence of intra-and extrahepatic collaterals, liver parenchymal abnormalities and porto-systemic varices were evaluated. Inferior vena cavography was performed in 10 cases. The diagnosis of IVC obstruction by 3D CE MRA was compared with that demonstrated by inferior vena cavography.

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A three-dimensional gadolinium-enhanced MR venography technique for imaging central veins.

Cited by 94 publications

References 0 publications

Influence of breathing movements and Valsalva maneuver on vena caval dynamics

Influence of breathing movements and Valsalva maneuver on vena caval dynamics

Incidence and Diagnosis of Thrombosis in Children With Short-Term Central Venous Lines of the Upper Venous System

Budd-Chiari syndrome: Diagnosis with three-dimensional contrast-enhanced magnetic resonance angiography

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