Fissures are double folds of pleura that divide the lung into lobes. There are three lobes in the right lung and two in the left lung. The lobes are further divided into segments and then into lobules, which are hexagonal divisions of the lungs that are the smallest visible subdivision.
Spectrophotometers are color measurement devices used to capture and evaluate color, including specification and communication of color, and monitoring color accuracy.
Single Photon Emission Computed Tomography (SPECT) can be used to look for areas of the brain with altered metabolism, cerebral blood flow, or neurotransmitter function. The idea is that these areas of altered activity are more likely to be areas producing seizures in a given patient.