What type of procedure uses a tube for minimally invasive diagnostics and treatments?

Endoscopy is the correct choice for a procedure that uses a tube for minimally invasive diagnostics and treatments. This technique involves the insertion of an endoscope, a flexible tube equipped with a light and camera, into the body through natural openings or small incisions. It allows healthcare providers to visualize the interior of various organs, such as the gastrointestinal tract, without the need for major surgery.

The versatility of endoscopy includes not only diagnostic purposes, such as identifying abnormalities like ulcers or tumors, but also therapeutic interventions, such as removing polyps or performing biopsies. Its minimally invasive nature means that patients often experience less discomfort, shorter recovery times, and reduced risk of complications compared to traditional surgical methods.

In contrast, nuclear scintigraphy uses radioactive materials to diagnose and assess various conditions, computed tomography (CT) involves X-ray technology to produce detailed images, and magnetic resonance imaging (MRI) utilizes strong magnetic fields and radio waves to capture images of internal structures. While these methods are critical in medical imaging and diagnostics, they do not involve the direct use of a tube for procedures, which distinguishes endoscopy as the appropriate answer to the question.