الفهرس 
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Abstract
Aim of the work
To evaluate the role of HRCT in diagnosis of pulmonary tuberculosis in 30 patients.
Conclusions
1- HRCT can detect small earl lesions in the hidden areas especially lung apices.
2- Secondary pulmonary lobule in the first and commonest site to be affected in the form of centerilobular consolidation, septal thickening or destruction.
3- HRCT detects small foci of parenchymal cavitation and differentiates it from brochiectatic changes; also it gives an accurate information about the wall thickness and activity of this cavity.
4- HRCT is more superior in detection of endobronchial spread which is a very important land mark of the activity of the disease.
5- HRCT is more superior that sputum culture in detection of the activity of the disease.
So, we can say that the major roles of HRCT in diagnosis of pulmonary T.B. are:
1- Defection of early lesion when plain X-Ray and lab. Investigations are negative.
2- Assessment of the activity.
3- Detection of endobronchial spread.
4- Follow up of the patient after antituberculous therapy.