Lung cancer perfusion: can we measure pulmonary and bronchial circulation simultaneously?
| Autor: | Jing Zhang, ChangBin Quan, Hong Li, Yuan Tian, XiaoDong Yuan, Guokun Ao |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Adult
Male medicine.medical_specialty Pulmonary Circulation Lung Neoplasms Perfusion scanning Bronchi Bronchial Arteries Pulmonary Artery medicine.artery Medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies Lung cancer Lung Aged Aorta business.industry Bronchial circulation General Medicine Blood flow Middle Aged medicine.disease Perfusion Blood chemistry Descending aorta Radiographic Image Interpretation Computer-Assisted Female Radiology business Tomography X-Ray Computed Algorithms |
| Zdroj: | European radiology. 22(8) |
| ISSN: | 1432-1084 |
| Popis: | To describe a new CT perfusion technique for assessing the dual blood supply in lung cancer and present the initial results.This study was approved by the institutional review board. A CT protocol was developed, and a dual-input CT perfusion (DI-CTP) analysis model was applied and evaluated regarding the blood flow fractions in lung tumours. The pulmonary trunk and the descending aorta were selected as the input arteries for the pulmonary circulation and the bronchial circulation respectively. Pulmonary flow (PF), bronchial flow (BF), and a perfusion index (PI, = PF/ (PF + BF)) were calculated using the maximum slope method. After written informed consent was obtained, 13 consecutive subjects with primary lung cancer underwent DI-CTP.Perfusion results are as follows: PF, 13.45 ± 10.97 ml/min/100 ml; BF, 48.67 ± 28.87 ml/min/100 ml; PI, 21 % ± 11 %. BF is significantly larger than PF, P0.001. There is a negative correlation between the tumour volume and perfusion index (r = 0.671, P = 0.012).The dual-input CT perfusion analysis method can be applied successfully to lung tumours. Initial results demonstrate a dual blood supply in primary lung cancer, in which the systemic circulation is dominant, and that the proportion of the two circulation systems is moderately dependent on tumour size.A new CT perfusion technique can assess lung cancer's dual blood supply. A dual blood supply was confirmed with dominant bronchial circulation in lung cancer. The proportion of the two circulations is moderately dependent on tumour size. This new technique may benefit the management of lung cancer. |
| Databáze: | OpenAIRE |
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