Copyright © 1998 by the European Society of Cardiology.
A comparison of adult pulmonary autograft diameter measurements with echocardiography and magnetic resonance imaging
a Department of Cardiopulmonary Surgery of the, University Hospital Sophia-Dijkzigt-Daniël Den Hoed, Rotterdam, The Netherlands
b Department of Radiology of the, University Hospital Sophia-Dijkzigt-Daniël Den Hoed, Rotterdam, The Netherlands
c Department of Cardiology of the, University Hospital Sophia-Dijkzigt-Daniël Den Hoed, Rotterdam, The Netherlands
d Department of Public Health of the Erasmus University, Rotterdam, The Netherlands
accepted July 26, 1997
In 38 consecutive patients the pulmonary autograft was used in aortic root replacement. Investigations were performed with transthoracic echocardiography, trans-oesophageal echocardiography and magnetic resonance imaging in 31, 27 and 27 patients respectively. The mean age at operation was 28·7 years (range 19·0–52·0) and the follow-up period was 2·8 years (range 0·8–6·7). The pul-monary autograft diameter was measured at the subannular region (1), at the annulus at the hinge points of the valve leaflets (2), at the sinus (3), at the sino-tubular junction (4) and at the distal part of the autograft (5). With trans-oesophageal echocardiography the mean systolic measurements at levels 1 to 5 were 32, 31, 42, 35 and 34mm, respectively. The corresponding diastolic measurements were smaller: 25, 28, 42, 35 and 34mm respectively. There was no significant difference between transthoracic echo-cardiography and transoesophageal echocardiography measurements of the proximal autograft (levels 1–3). Diameters obtained with magnetic resonance imaging were 1 to 3mm larger than those obtained with transthoracic echocardiography and transoesophageal echocardiography (P<0·05), except the annulus at systole (P>0·3).
Conclusions
The mean pulmonary autograft diameters measured using transthoracic echocardiography, transoesophageal echocardiography and magnetic resonance imaging were larger than native aortic and pulmonary diameters of a normal population in the same age group. Diameters of the distal 2 levels could not be imaged reliably with transthoracic echocardiography. Magnetic resonance imaging diameter measurements were, in general, larger than with echocardiography.
Key Words: Pulmonary autograft • aortic valve • magnetic resonance imaging • echocardiography
f1 Correspondence: Raymond B. Hokken, Cardiopulmonary Surgery, Bd 156, University Hospital Sophia-Dijkzigt-Daniël, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.