1. Use of Cardiac Magnetic Resonance Imaging Based Measurements of Inferior Vena Cava Cross-Sectional Area in the Diagnosis of Pericardial Constriction 
Kate Hanneman, MD, Paaladinesh Thavendiranathan, MD, Elsie T. Nguyen, MD, Hadas Moshonov, PhD, Rachel Wald, MD, Kim A. Connelly, MBBS, PhD, Narinder S. Paul, MD, Bernd J. Wintersperger, MD, Andrew M. Crean, MRCP 
Canadian Association of Radiologists Journal 
Volume 66, Issue 3, Pages (August 2015)
DOI: /j.carj
Copyright © 2015 Canadian Association of Radiologists Terms and Conditions

2. Figure 1
A 44-year old male with history of recurrent pleural and pericardial effusions and constrictive physiology with subsequent symptomatic relief following surgical pericardiectomy. (A) inferior vena cava (IVC) and aortic cross-sectional areas were determined by manual contouring on a single axial steady-state free precession image in end systole at the level of the esophageal hiatus. The IVC area was 8.4 cm2 while the aortic (Ao) area was 3.7 cm with an IVC to aortic area ratio of 2.3. (B) Right atrium (RA) and ventricle (RV) cross-sectional areas were determined by manual contouring and (C) RA dimensions (anterior-posterior and transverse) were measured on a 4-chamber image. Moderate bilateral pleural effusions were noted (arrows). This figure is available in colour online at
Canadian Association of Radiologists Journal  , DOI: ( /j.carj )
Copyright © 2015 Canadian Association of Radiologists Terms and Conditions

3. Figure 2
A 69-year old male with history of recurrent pleural effusions and constrictive physiology who subsequently underwent pericardial stripping. (A) Maximum pericardial thickness (9 mm) measured on short-axis steady-state free precession image. (B) Diffuse pericardial enhancement assessed on late gadolinium enhanced images (short axis [B] and axial [C], arrows). Large left pleural effusion (*) and small pericardial effusion (arrowhead) were also noted. The inferior vena cava area was 11.2 cm2 (not shown).
Canadian Association of Radiologists Journal  , DOI: ( /j.carj )
Copyright © 2015 Canadian Association of Radiologists Terms and Conditions

4. Figure 3
Receiver operating characteristic (ROC) curves for suprahepatic inferior vena cava (IVC) cross-sectional area (blue), IVC cross-sectional area indexed to body surface area (green), IVC to aortic cross-sectional area (I:A) ratio (brown), right ventricular (RV) area (purple), and respirophasic septal shift (yellow). Areas under the curve and 95% confidence intervals are [ ], [ ], [ ], [ ], and [ ], respectively. This figure is available in colour online at
Canadian Association of Radiologists Journal  , DOI: ( /j.carj )
Copyright © 2015 Canadian Association of Radiologists Terms and Conditions