Final answer:
A CT scan provides detailed cross-section images of tissue structure by taking multiple X-rays of a specific area, whereas an MRI offers detailed images using magnetic fields and radio waves.
Step-by-step explanation:
The technique that can show a detailed cross-section of tissue structure is a Computed Tomography (CT) scan. A CT scan involves taking multiple X-rays of a specific body section, with those X-rays passing through tissues at different rates based on the tissue densities. As a result, a computer can construct a detailed image of the area, often used to identify abnormalities such as tumors or brain atrophy. Another method that provides detailed images is Magnetic Resonance Imaging (MRI). MRI uses a strong magnetic field and radio waves to generate detailed images of the body's internal structures, making it especially useful in neurological studies to distinguish between different types of tissues, such as white and gray matter.