HRCT uses high spatial resolution of lung parenchyma, using thin collimation, high-spatial frequency reconstruction algorithm and increased kVp and mA settings. Alterations in anatomy can be identified at level of secondary pulmonary lobule, which can be diagnostic, although nonspecific.
MATERIALS AND METHODS
50 patients underwent HRCT and chest radiograph in our hospital in this retrospective study after fitting into clinical criteria. Patient underwent chest x-ray and CT scan with an interval of half an hour to one hour and both findings were correlated based on previous studies.
We had 50 patients with child to older age group patients of both sex. Patients were categorised depending on normal and abnormal x-ray chest, HRCT and depending upon density of ground-glass opacity.
HRCT takes over routine chest radiography in diagnosis of chronic lung disease. HRCT helps in excellent diagnosis and prognosis of disease. HRCT helps in localising site for tissue sampling. Thus, HRCT is an excellent imaging modality for chronic lung disease.