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Response to: ‘CT assessment for pulmonary hypertension requires systematic assessment of cardiac, vascular and parenchymal signs’ by Marloes et al
  1. S Rajaram1,
  2. A J Swift1,
  3. J M Wild1,
  4. D G Kiely2
  1. 1 Academic Department of Radiology, University of Sheffield, Royal Hallamshire Hospital, Sheffield, UK
  2. 2 Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, UK
  1. Correspondence to Dr S Rajaram, Academic Unit of Radiology, University of Sheffield, C Floor, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, UK; docmeethu{at}

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We thank Marloes et al for their comments on our recently published article and their interest in pulmonary artery (PA) size as a potential prognostic marker and also their comments regarding adjusting the measurement for body surface area (BSA).1

First, we do recognise the diagnostic value of PA size and PA to aortic (PA:Ao) ratio in selected subgroups of patients, and we have previously shown that a PA:Ao ratio ≥1 in patients with systemic sclerosis and suspected pulmonary arterial hypertension (PAH) is highly suggestive of …

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