The thesis statement is typically located at the end of your opening paragraph. (The opening paragraph serves to set the context for the thesis.) Remember, your reader will be looking for your thesis. Make it clear, strong, and easy to find. Attributes of a good thesis:
What is transesophageal echocardiography? Transesophageal echocardiography (TEE) is a test that produces pictures of your heart. TEE uses high-frequency sound waves (ultrasound) to make detailed pictures of your heart and the arteries that lead to and from it.
In computing, tee is a command in command-line interpreters (shells) using standard streams which reads standard input and writes it to both standard output and one or more files, effectively duplicating its input. It is primarily used in conjunction with pipes and filters.