Overview of Perforator Imaging and Flap Perfusion Technologies; Assessing Perforator Architecture; Acoustic Doppler Sonography, Color Duplex Ultrasound, and Laser Doppler Flowmetry as Tools for Successful Autologous Breast Reconstruction; Doppler Sonography and Color Duplex Imaging;  Computerized Tomographic and Magnetic Resonance Angiography-Technical; CT Angiography: Clinical Applications; CT Angiography: Assessing Outcomes;  Non-contrast Magnetic Resonance Imaging for Preoperative Perforator Mapping; Contrast Enhanced Magnetic Resonance; Dynamic Infrared Thermography (DIRT);  Fluorescent Angiography; Near Infrared Spectroscopy in Autologous Breast Reconstruction; Implantable Doppler System; Noninvasive Tissue Oximetry