Non-invasive determination of pulmonary hypertension with dynamic contrast-enhanced computed tomography: a pilot study

Michael Pienn, Gabor Kovacs, Maria Tscherner, Alexander Avian, Thorsten R Johnson, Peter Kullnig, Rudolf Stollberger, Andrea Olschewski, Horst Olschewski, Zoltán Bálint

Research output: Contribution to journalArticleResearchpeer-review

Abstract

OBJECTIVES: In this pilot study we explored whether contrast-material bolus propagation time and speed in the pulmonary arteries (PAs) determined by dynamic contrast-enhanced computed tomography (DCE-CT) can distinguish between patients with and without pulmonary hypertension (PH).

METHODS: Twenty-three patients (18 with and 5 without PH) were examined with a DCE-CT sequence following their diagnostic or follow-up right-sided heart catheterisation (RHC). X-ray attenuation over time curves were recorded for regions of interest in the main, right and left PA and fitted with a spline fit. Contrast material bolus propagation speeds and time differences between the peak concentrations were compared with haemodynamic parameters from RHC.

RESULTS: Bolus speed correlated (ρ = -0.55) with mean pulmonary arterial pressure (mPAP) and showed a good discriminative power between patients with and without PH (cut-off speed 317 mm/s; sensitivity 100%/specificity 100%). Additionally, time differences between peaks correlated with mPAP (ρ = 0.64 and 0.49 for right and left PA, respectively) and discrimination was achieved with sensitivity 100%/specificity 100% (cut-off time 0.15 s) and sensitivity 93 %/specificity 80% (cut-off time 0.45 s), respectively.

CONCLUSIONS: Bolus propagation speed and time differences between contrast material peaks in the PA can identify PH. This method could be used to confirm the indication for RHC in patients screened for pulmonary hypertension.

KEY POINTS: • Dynamic contrast-enhanced computed tomography (CT) can identify patients with pulmonary hypertension. • Bolus propagation speed in the pulmonary artery is reduced in pulmonary hypertension. • Peak-contrast propagation times provide a practical surrogate for speed. • This non-invasive technique could serve as a screening method for pulmonary hypertension. • Invasive right-sided heart catheterisations might be restricted to a smaller group of patients.

Original languageEnglish
Pages (from-to)668-76
Number of pages9
JournalEuropean Radiology
Volume24
Issue number3
DOIs
Publication statusPublished - Mar 2014

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Pulmonary Hypertension
Tomography
Pulmonary Artery
Cardiac Catheterization
Contrast Media
Sensitivity and Specificity
Arterial Pressure
Lung
Hemodynamics
X-Rays

Keywords

  • Adult
  • Aged
  • Artifacts
  • Contrast Media
  • Female
  • Humans
  • Hypertension, Pulmonary
  • Male
  • Middle Aged
  • Pilot Projects
  • Pulmonary Artery
  • Sensitivity and Specificity
  • Tomography, Spiral Computed
  • Tomography, X-Ray Computed
  • Clinical Trial
  • Journal Article
  • Research Support, Non-U.S. Gov't

Cite this

Pienn, M., Kovacs, G., Tscherner, M., Avian, A., Johnson, T. R., Kullnig, P., ... Bálint, Z. (2014). Non-invasive determination of pulmonary hypertension with dynamic contrast-enhanced computed tomography: a pilot study. European Radiology , 24(3), 668-76. https://doi.org/10.1007/s00330-013-3067-8

Non-invasive determination of pulmonary hypertension with dynamic contrast-enhanced computed tomography : a pilot study. / Pienn, Michael; Kovacs, Gabor; Tscherner, Maria; Avian, Alexander; Johnson, Thorsten R; Kullnig, Peter; Stollberger, Rudolf; Olschewski, Andrea; Olschewski, Horst; Bálint, Zoltán.

In: European Radiology , Vol. 24, No. 3, 03.2014, p. 668-76.

Research output: Contribution to journalArticleResearchpeer-review

Pienn, M, Kovacs, G, Tscherner, M, Avian, A, Johnson, TR, Kullnig, P, Stollberger, R, Olschewski, A, Olschewski, H & Bálint, Z 2014, 'Non-invasive determination of pulmonary hypertension with dynamic contrast-enhanced computed tomography: a pilot study' European Radiology , vol. 24, no. 3, pp. 668-76. https://doi.org/10.1007/s00330-013-3067-8
Pienn, Michael ; Kovacs, Gabor ; Tscherner, Maria ; Avian, Alexander ; Johnson, Thorsten R ; Kullnig, Peter ; Stollberger, Rudolf ; Olschewski, Andrea ; Olschewski, Horst ; Bálint, Zoltán. / Non-invasive determination of pulmonary hypertension with dynamic contrast-enhanced computed tomography : a pilot study. In: European Radiology . 2014 ; Vol. 24, No. 3. pp. 668-76.
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abstract = "OBJECTIVES: In this pilot study we explored whether contrast-material bolus propagation time and speed in the pulmonary arteries (PAs) determined by dynamic contrast-enhanced computed tomography (DCE-CT) can distinguish between patients with and without pulmonary hypertension (PH).METHODS: Twenty-three patients (18 with and 5 without PH) were examined with a DCE-CT sequence following their diagnostic or follow-up right-sided heart catheterisation (RHC). X-ray attenuation over time curves were recorded for regions of interest in the main, right and left PA and fitted with a spline fit. Contrast material bolus propagation speeds and time differences between the peak concentrations were compared with haemodynamic parameters from RHC.RESULTS: Bolus speed correlated (ρ = -0.55) with mean pulmonary arterial pressure (mPAP) and showed a good discriminative power between patients with and without PH (cut-off speed 317 mm/s; sensitivity 100{\%}/specificity 100{\%}). Additionally, time differences between peaks correlated with mPAP (ρ = 0.64 and 0.49 for right and left PA, respectively) and discrimination was achieved with sensitivity 100{\%}/specificity 100{\%} (cut-off time 0.15 s) and sensitivity 93 {\%}/specificity 80{\%} (cut-off time 0.45 s), respectively.CONCLUSIONS: Bolus propagation speed and time differences between contrast material peaks in the PA can identify PH. This method could be used to confirm the indication for RHC in patients screened for pulmonary hypertension.KEY POINTS: • Dynamic contrast-enhanced computed tomography (CT) can identify patients with pulmonary hypertension. • Bolus propagation speed in the pulmonary artery is reduced in pulmonary hypertension. • Peak-contrast propagation times provide a practical surrogate for speed. • This non-invasive technique could serve as a screening method for pulmonary hypertension. • Invasive right-sided heart catheterisations might be restricted to a smaller group of patients.",
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AU - Pienn, Michael

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AU - Johnson, Thorsten R

AU - Kullnig, Peter

AU - Stollberger, Rudolf

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N2 - OBJECTIVES: In this pilot study we explored whether contrast-material bolus propagation time and speed in the pulmonary arteries (PAs) determined by dynamic contrast-enhanced computed tomography (DCE-CT) can distinguish between patients with and without pulmonary hypertension (PH).METHODS: Twenty-three patients (18 with and 5 without PH) were examined with a DCE-CT sequence following their diagnostic or follow-up right-sided heart catheterisation (RHC). X-ray attenuation over time curves were recorded for regions of interest in the main, right and left PA and fitted with a spline fit. Contrast material bolus propagation speeds and time differences between the peak concentrations were compared with haemodynamic parameters from RHC.RESULTS: Bolus speed correlated (ρ = -0.55) with mean pulmonary arterial pressure (mPAP) and showed a good discriminative power between patients with and without PH (cut-off speed 317 mm/s; sensitivity 100%/specificity 100%). Additionally, time differences between peaks correlated with mPAP (ρ = 0.64 and 0.49 for right and left PA, respectively) and discrimination was achieved with sensitivity 100%/specificity 100% (cut-off time 0.15 s) and sensitivity 93 %/specificity 80% (cut-off time 0.45 s), respectively.CONCLUSIONS: Bolus propagation speed and time differences between contrast material peaks in the PA can identify PH. This method could be used to confirm the indication for RHC in patients screened for pulmonary hypertension.KEY POINTS: • Dynamic contrast-enhanced computed tomography (CT) can identify patients with pulmonary hypertension. • Bolus propagation speed in the pulmonary artery is reduced in pulmonary hypertension. • Peak-contrast propagation times provide a practical surrogate for speed. • This non-invasive technique could serve as a screening method for pulmonary hypertension. • Invasive right-sided heart catheterisations might be restricted to a smaller group of patients.

AB - OBJECTIVES: In this pilot study we explored whether contrast-material bolus propagation time and speed in the pulmonary arteries (PAs) determined by dynamic contrast-enhanced computed tomography (DCE-CT) can distinguish between patients with and without pulmonary hypertension (PH).METHODS: Twenty-three patients (18 with and 5 without PH) were examined with a DCE-CT sequence following their diagnostic or follow-up right-sided heart catheterisation (RHC). X-ray attenuation over time curves were recorded for regions of interest in the main, right and left PA and fitted with a spline fit. Contrast material bolus propagation speeds and time differences between the peak concentrations were compared with haemodynamic parameters from RHC.RESULTS: Bolus speed correlated (ρ = -0.55) with mean pulmonary arterial pressure (mPAP) and showed a good discriminative power between patients with and without PH (cut-off speed 317 mm/s; sensitivity 100%/specificity 100%). Additionally, time differences between peaks correlated with mPAP (ρ = 0.64 and 0.49 for right and left PA, respectively) and discrimination was achieved with sensitivity 100%/specificity 100% (cut-off time 0.15 s) and sensitivity 93 %/specificity 80% (cut-off time 0.45 s), respectively.CONCLUSIONS: Bolus propagation speed and time differences between contrast material peaks in the PA can identify PH. This method could be used to confirm the indication for RHC in patients screened for pulmonary hypertension.KEY POINTS: • Dynamic contrast-enhanced computed tomography (CT) can identify patients with pulmonary hypertension. • Bolus propagation speed in the pulmonary artery is reduced in pulmonary hypertension. • Peak-contrast propagation times provide a practical surrogate for speed. • This non-invasive technique could serve as a screening method for pulmonary hypertension. • Invasive right-sided heart catheterisations might be restricted to a smaller group of patients.

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KW - Humans

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KW - Middle Aged

KW - Pilot Projects

KW - Pulmonary Artery

KW - Sensitivity and Specificity

KW - Tomography, Spiral Computed

KW - Tomography, X-Ray Computed

KW - Clinical Trial

KW - Journal Article

KW - Research Support, Non-U.S. Gov't

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