You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Investigation of choice for dysphagia lusoria is? and explain in detail?
Dysphagia lusoria Compression of the oesophagus by the aberrant right subclan aery * Barium study of the esophagus may show the indentation on the posterior esophageal wall by the aery. * Chest x-ray can demonstrate enlargement of the superior mediastinum. * CT angiography and MRI thorax are the best diagnostic modalities that could identify the dysphagia lusoria. * In children, the most common presentations are stridor and recurrent chest infections, may be due to their tracheal softening comparing to adult population.