Deccan Chronicle

3D HUMAN BODY SCAN

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Traditiona­lly the human body is analysed for structural and functional abnormalit­ies by ultrasound, computed tomography and magnetic resonance imaging by taking three planes namely transverse (axial), sagittal (longitudin­al) and coronal sections. This technique is used to evaluate structural abnormalit­ies and take measuremen­ts by reconstruc­ting the 2Dimension­al data. 3D body scanners are 3D scanning systems designed to capture in three dimensions the full body of a person. The result obtained is an accurate 3D model or 3D avatar. This allows to visualise the exact body shape and get accurate data such as body measuremen­ts and posture analysis. This technology was developed initially for the fashion industry as a fast and accurate 3D measuremen­t solution. Its applicatio­ns are expanding into other fields like healthcare, 3D figurines and 3D photo, fitness or entertainm­ent. Applicatio­n in healthcare — human body metrics — is to measure accurately and visualise a person’s body size, shape and skin-surface area. This avoids errors from manual measuremen­ts and transcript­ion mistakes. Clinical applicatio­ns of this technology are cranial re-modelling, prosthesis designing, aesthetic prosthesis, treatment of plagioceph­aly and monitoring of wound healing. It reduces turnaround time by replacing traditiona­l methods and makes the process seamless and worry-free for patients, thus helping in utilising computer-assisted designing (CAD) and computer-assisted manufactur­ing (CAM) base on the 3D image Making of scoliosis corsets Posture analysis Vascular surgery and orthopedic mechanics for making adapted artificial limbs

Fast-scanning sessions are extremely short. Consultati­on times are drasticall­y shortened, which leads to more patients being treated. QUICK, automated post-treatment as what you see is what you get: 3D surface is generated as you scan, which makes for minimal waiting time.

User-friendly and very short learning curve, no matter the user’s experience level. Smart data files can be sent rapidly and securely over the internet to a remote fabricatio­n centre to optimise machining process. It is clean and great alternativ­e to traditiona­l, tiresome and messier casting methods. Non-contact and non-invasive, 3D scan process causes minimal discomfort to the patient. Fitness, 3D measuremen­ts 3D Figurines / 3D photos Fashion industry Design planning of vehicle interiors and work places

This operates by using 3D scanners

OIt uses photogramm­etry, a fast 3D capture process taking many pictures of an object at once and from different angles, then processing them through an algorithm to “stitch” them together and generate a 3D model. Photogramm­etry technology delivers high quality, coloured and textured body scans.

Structured light is where a series of linear light patterns are cast on an object.

The 3D scanner then generates an accurate 3D model using triangulat­ion. This 3D scanning technology is highly accurate but requires the subject to be very still.

3D scanners are available for industrial applicatio­ns.

Its applicatio­n in medical field is not yet time tested. There are no publicatio­ns in the reputed journals regarding the utility. The writer is a radiologis­t.

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