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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2006; 16(02): 215-220
DOI: 10.4103/0971-3026.29095
Original Article

Role of CT angiography in pulmonary embolism and its comparative evaluation with conventional pulmonary angiography

S Sood
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
,
A Negi
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
,
D S Dhiman
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
,
R G Sood
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
,
P C Negi
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
,
S Sharma
Radio-Diagnosis Deptt. I.G.M.C. Shimla, India
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Abstract

OBJECTIVES : The purpose of this study is to assess the role of spiral CT angiography in suspected cases of pulmonary embolism and to do comparative evaluation of CT angiography with conventional pulmonary angiography. MATERIAL AND METHODS : Twenty five patients of suspected pulmonary embolism (PE) underwent spiral CT angiography from the level of arch of aorta to the dome of diaphragm .Scanning was done with collimation of 5mm and an interval of 5mm at 130 mA and 120 kV. 100 cc of contrast containing 300 mg I/ ml, diluted with 60cc of normal saline in ratio 5:3 was injected at a flow rate of 3ml/sec with a scan delay of 20 seconds. Retro - reconstruction was done at 3mm interval. RESULTS : Spiral CTA showed a sensitivity of 80 % and a specificity of 85.7% for the diagnosis of pulmonary embolism. It also provided ancillary findings in the form of parenchymal and mediastinal structural information. CONCLUSION : CTA is an effective alternative to PA in diagnosis of suspected cases of PE. With its non- invasive nature, low cost, over and above high sensitivity and specificity, it may be used as the first line of investigation in the diagnosis of PE.

Keywords

Pulmonary embolism - CT angiography - conventional pulmonary angiography


Publication History

Received: 12 November 2005

Accepted: 10 April 2005

Article published online:
02 August 2021

© 2006. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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  • References

  • 1 Ginsberg J S et al. Application of a novel and rapid whole body assay for D-dimer in patients with clinically suspected pulmonary embolism. Thrombo Hoemost 1995; 73: 35-38.
  • 2 Alan H Matsumoto and Charles J Tegrmeyer. Contemporary diagnostic approaches to acute pulmonary emboli. RCNA 1995; 33:167-182 .
  • 3 A Kohli,D Rajput, M Gomes, S Desai. Imaging of pulmonary thrombo-embolism . Ind J Radiol Img 2002; 12: 207-212.
  • 4 H dink Sostman et al. Use of pulmonary angiography for suspected pulmonary embolism. AJR 1999 ; 139: 673-677.
  • 5 Fleischner F G. Pulmonary embolism Clinic Radiol 1962; 13: 169-182.
  • 6 Westermark N. On the roentgen diagnosis of lung embolism. Acta Radiol 1938; 19: 357-372.
  • 7 Philips S Wills et al. Use of clinical model for safe management of patients with suspected pulmonary embolism. Annals of Intern Med 1998; 129: 997-1005.
  • 8 Russell D H, Jack Hirsh, Cedric I Carter, Richard M. Pulmonary angiography, ventilation lung scanning and venography for clinically suspected pulmonary embolism with abnormal perfusion lung scan. Annals of internal Medicine 1993; 98: 891-899.
  • 9 John A Heital et al. Predictors of survival after DVT and Pulmonary embolism. Arch Intern Med 1999; 159: 445- 453.
  • 10 Kedar chintapalli et al. Computed tomography of pulmonary thrombo-embolism and infarction. J comput Assist tomogr 1998; 12: 553-559.
  • 11 Emmanuel E Coche et al. Acute pulmonary embolism - Ancillary findings at spiral CT. Radiology 1998; 207:753-758.
  • 12 Janaki Balakrishanan et al. Pulmonary embolism: CT appearance with pathologic co-relation. J comput Assist Tomogr 1998; 13:941-945.
  • 13 Robert A Novelline et al. The clinical course of patients with suspected pulmonary embolism and a negative pulmonary arteriogram. Radiology 1978;126:561-567.
  • 14 Lawrence R Goodman et al. Detection of pulmonary embolism in patients with un resolved clinical and scintigraphic diagnosis: helical CT versus angiography. AJR 1995; 164: 1369- 1374.
  • 15 Daniel C Diffin et al. Effect of anatomic distribution of pulmonary emboli on inter-observer agreement in the interpretation of pulmonary angiography. AJR1998; 171: 1085- 1089.