الفهرس 
Role of CT in diagnosis of pulmonary hypertension
Idiopathic Pulmonary Arterial HypertensionOnly 14 pages are availabe for public view
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Abstract
Pulmonary hypertension was previously considered a rare
untreatable condition. The past two decades have seen major
changes in our understanding of the spectrum of disease
affecting the pulmonary circulation. More than 30 randomised
controlled trials (RCTs) of treatments have been performed,
and surgery for patients with chronic thromboembolic
pulmonary hypertension has been developed. Advances in
imaging have enabled more detailed patient assessment, but
pulmonary hypertension continues to be a life shortening
condition, and there is often a delay of around two years from
onset of symptoms to diagnosis.
In view of the above ,the present study was undertaken to
assess the value of pulmonary artery diameter in CT chest , RVSP
in echocardiography and MPI as an indicator for right ventricular
function in pulmonary hypertension patients .
The study included 50 patients, 24 males and 26 females
ranging in age from 27 to 75 years who underwent CT chest and
echocardiograghy
The results obtained were collected ,tabulated , and submitted
for statistical analysis
The following results were obtained:
1) Among the 50 patients with PH , 19 patients had MPI
>0.55 and 31 patients <0.55
2) A highly significant positive correlation was found between
RVSP and pulmonary artery diameter in CT chest
3) Also there is a highly significant positive correlation
between RVSP and MPI
4) The ratio between pulmonary artery diameter to aortic
diameter (P/A) was correlated with RVSP and MPI
5) According to classification of PH , the comparison between
4 classified groups revealed more correlation of the study
with CTEPH patients(71%) then with pulmonary arterial
hypertension(56%) then with pulmonary hypertension with
multifactorial mechanisms(33%) and lastly with pulmonary
hypertension due to lung diseases and /or hypoxia(25%).
6) Pulmonary artery diameter was an indicator for
pulmonary hypertension with a sensitivity 90 % using a
cut off value 30 mm.