HRCT is investigation of choice for diagnosing all of the following conditions, EXCEPT:
CT/MRI aeriography is used for investigation of pulmonary aery aneurysms. HRCT findings in Sarcoidosis: Common findings are: Small nodules in a perilymphatic distribution (i.e. along subpleural surface and fissures, along interlobular septa and the peribronchovascular bundle). Upper and middle zone predominance. Lymphadenopathy in left hilus, right hilus and paratracheal (1-2-3 sign). Often with calcifications. HRCT findings in Miliary TB: It is characterized by uniform small nodules (2-3 mm) with a random distribution. Characteristic high-resolution CT (HRCT) findings of idiopathic pulmonary fibrosis (IPF) includes reticulation, architectural distoion, and honeycombing involving mainly the lung periphery and the lower lobes.
Sarcoidosis
Miliary tuberculosis
Interstitial fibrosis
Pulmonary aery aneurysm