<prompt> Dysphagia lusoria is best diagnosed byPlain radiographyFluoroscopyCT AngiographyUltrasound  <response>: Ans. isci.e., CT AngiographyRef: Human Malformations and Related Anomalies p. 130Dysphagia lusoria is an impairment of swallowing due to compression from an aberrant right subclan aery aeria lusoriaCT angiography and MRI thorax are the best diagnostic modalities that could identify the aeria lusoria. 