Burboa-Noriega JH, Burboa-Noriega L, Díaz-Zamudio M, Criales-Vera SA

Language: Spanish
References: 11
Page: 129-134
PDF size: 263.32 Kb.

ABSTRACT

Dual-energy computed angiotomography is capable of producing images which potentially provide information on pulmonary perfusion. Recent publications have shown promising results in application of this technique to prove perfusion defects in patients with acute pulmonary thromboembolism; however, information on its usefulness in patients with chronic pulmonary thromboembolism is scant.
Objetive: determine if there are changes in pulmonary perfusion, in patients with chronic pulmonary thromboembolism, demonstrable by dual-energy angiotomography.
Material and Methods: a prospective study in consecutive patients referred to the tomography department with suspicion of chronic pulmonary thromboembolism at Instituto Nacional de Cardiología Ignacio Chavez.
Results: analysis by lobe found a significant difference in arterial perfusion between patients with chronic pulmonary thromboembolism and controls. In the delayed phase, greater perfusion was shown in patients with chronic pulmonary thromboembolism compared with controls; however, the difference was not significant.
Conclusion: biphasic perfusion by dual-energy pulmonary angiotomography is a tool which helps prove and quantify the functional alterations found in patients with chronic pulmonary thromboembolism. This technique can be useful in patients who are candidates for thromboendarterectomy because collateral circulation, a favorable factor for prognosis, can be qualitatively proved.

REFERENCES

1. Lu G-M, Wu S-Y, Yeh BM y cols: Dual-energy computed tomotraphy in pulmonary embolism. The British Journal of Radiology 2010;83:707-718.

2. Walker CM, Rosado ML, Martínez S y cols: Bronchial Arteries: Anatomy, Function, Hypertrophy and Anomalies. RadioGraphics 2015;35:32-49.

3. Mi-Jin K, Chang M, Chang-Hyun L y cols: Dual-Energy CT: Clinical Applications in Various Pulmonary Diseases. RadioGraphics 2010;30:685-698.

4. Ameli-Renani S, Ramsay L, Bacon JL y cols: Dualenergy computed tomography in the assessment of vascular and parenchymal enchancement in suspected pulmonary hypertension. Journal Thoracic Imaging 2014;29(2):98-106.

5. Guang M, Yan’E Z, Long JZ y cols: Dual-Energy CT of the Lung. AJR 2012;199:S40-S53.

6. Yoo JH, Ja YK, Kyu OC y cols: Different Perfusion Pattern Between Acute and Chronic Pulmonary Thromboembolism: Evaluation With Two-Phase Dual-Energy Perfusion CT. AJR 2013;200(4):812-817.

7. Hoey E, Mirsadraee S, Pepke-Zaba J y cols: Dual-Energy CT Angiography for Assessment of Regional Pulmonary Perfusion in Patients With Chronic Thromboembolic Pulmonary Hypertension: Initial Experiencie. AJR 2011;196:524-532.

8. Hagspiel KD, Flors L, Housseini AM y cols: Pulmonary blood volume imaging with dual-energy computed tomography: Spectrum of findings. Clinical Radiology 2012;67:69-77.

9. Ameli-Renani S, Rahman F, Nair A y cols: Dual-Energy CT for Imaging of Pulmonary Hypertension: Challenges and Opportunities. RadioGraphics 2014;34:1769-1790.

10. Otrakji A, Digumarthy SR, Lo Gullo R y cols: Dual-Energy CT: Spectrum of Thoracic Abnormalities. RadioGraphics 2016;36:38-52.

11. Walsh SLF, Nair A, Hansell DM: Post-processing applications in thoracic computed tomography. Clinical Radiology 2013;68:433-448.