This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Dysphagia lusoria is best diagnosed by 
Select and explain. 
A. Plain radiography, B. Fluoroscopy, C. CT Angiography, D. Ultrasound
C: CT Angiography
Answer: C: CT Angiography 
Explanation: Ans. is'c'i.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 lusoria)CT angiography and MRI thorax are the best diagnostic modalities that could identify the aeria lusoria.