A method of accessing an image database containing location data and determining one or more clusters of the digital images based on their location data. A resilient main superstructure has an adhesive interface securing a surface material that is appropriate for cats to scratch or climb. Methods of use of the apparatus in the practice of various processes are also provided by the present invention. A related feature is the use of a digital flat-panel x-ray imager that employs a regular array of sensors to convert incident x-ray energy to a computer readable image, thereby permitting the fluoroscopic x-ray device to be used in any orientation without being affected by distortions due to local magnetic fields. Contemplated is the delivery of isolated, culture-expanded, human mesenchymal stem cells; freshly aspirated bone marrow; or their combination in a carrier material or matrix.