By John Pallanch
A worldwide pool of surgeons and researchers utilizing third-dimensional imaging for facial cosmetic surgery current subject matters on: picture fusion in pre-operative making plans; using 3D imaging instruments together with stereolithographic modeling and intraoperative navigation for maxillo-mandibular and complicated orbital reconstruction; personalized, three-d, intraoperative surgical publications for nasal reconstruction; the advantages and bounds of utilizing an built-in 3D digital method for maxillofacial surgical procedure; 3D quantity review ideas and computer-aided layout and production for pre-operative fabrication of implants in head and neck reconstruction; A comparability of other new 3D imaging applied sciences in facial cosmetic surgery; 3-D images within the goal research of quantity augmentation together with fats augmentation and dermal fillers; evaluate of alternative rhinoplasty innovations by way of overlay of sooner than and after 3D photographs; 3D volumetric research of mixed facial lifting and volumizing...
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Extra info for 3-D Imaging Technologies in Facial Plastic Surgery, an Issue of Facial Plastic Surgery Clinics
3. Rendering. If the 3D surface imaging system captures surface color information, at this stage the pixels are provided with values reflecting color texture and depth to generate into a lifelike 3D object viewed on the computer screen. 3A–C). • Surface images may correct for CBCT surface artifacts caused by patient movement (ie, swallowing, breathing, head movement, and so forth) because CBCT scans can take from 5 to 70 seconds depending on the manufacture of the CBCT unit and the imaging protocol; • Independently acquired surface images compensate for soft tissue compression from upright CBCT device stabilization aids (ie, chin rest, forehead restraint, and so forth); • Surface images may also the eliminate soft tissue draping from supine CBCT devices; • Surface images may supplement missing anatomic data (ie, nose, chin, and so forth); • Surface images may provide a more accurate representation of the draping soft tissue that reflects the patient’s natural head position for condition assessment and treatment planning.
Some themes prevail throughout these articles. One is the inadequacy of measurements or analysis done in 2D. Comparing image analysis in 3D with that performed in two dimensions is analogous to comparing the impact of viewing a sculpture with viewing a drawing of the same subject. Everything surgeons do is in 3D, resulting in 3D changes in tissue. Whether the surgery is reconstructive or purely aesthetic, being able to plan in 3D or execute with 3D guides using premanufactured 3D templates or prostheses, or even image guidance, can be invaluable.
Optics-based Imaging For human form imaging, the optics-based approach has been implemented as structured light, moiré fringe projection, and stereo photogrammetric techniques. Several systems have been commercially produced (Table 2). Table 2 Selection of commercially available optics-based technologies Structured light This is an optical technique that projects structured light patterns (usually white light), such as grids, dots, or stripes, onto the subject. Next, a single image of the subject and the projected pattern are acquired by a digital camera within the system.
3-D Imaging Technologies in Facial Plastic Surgery, an Issue of Facial Plastic Surgery Clinics by John Pallanch