Search media on nodename without descendants

getmedia.cs

var internalSearchProvider = ExamineManager.Instance.SearchProviderCollection["InternalSearcher"];
var query = ExamineManager.Instance.CreateSearchCriteria()
        .NodeTypeAlias("image")
        .And().NodeName("Desert.jpg".ToLowerInvariant())
        .Compile();
var results = Umbraco.TypedSearch(query, internalSearchProvider);