<prompt> HRCT is investigation of choice for diagnosing all of the following conditions, EXCEPT:SarcoidosisMiliary tuberculosisInterstitial fibrosisPulmonary aery aneurysm  <response>: CTMRI 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. 