<prompt> Increased pulmonary blood flow radiologically indicated by all except:Descending pulmonary artery diameter 16 mmKerley B linesDiameter of 2 peripheral arteries accompanying bronchusPeripheral arteries more than 6 in outer 13rd  <response>: Refer M.Satpathys Clinical Diagnosis of Congenital Heart Disease, 1st edition, pg no: 38Features of increased pulmonary blood flowBlood vessels become visible in the outer third of lung field At least 6 vessels can be traced to theouter third. When hilar and intrapulmonary vessels are uniformly changed, it is very suggestive of shunt lesions.Ratio of right descending pulmonary artery to trachea 1Right descending pulmonary artery diameter 14 mm suggests increased blood flow and 17 mm is very strongly suggestiveProminent end-on vessels seen at hilumEnface vessels below 10th posterior ribProminent vessels seen below crest of diaphragmRatio of vessels to adjacent bronchus 2:1 