THREE-DIMENSIONAL IMAGING OF CONGENITAL DISORDERS INVOLVING THE ORBIT
| Autor: | Leo Koornneef, J. Michiel Vaandrager, Frans W. Zonneveld, Jacques C. van der Meulen |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
medicine.medical_specialty
Mirror image Radiography Surgical planning Medical Records Patient Care Planning Imaging phantom Craniofacial Abnormalities Patient Education as Topic Image Processing Computer-Assisted Orbital Diseases Medical imaging medicine Humans Radiology Nuclear Medicine and imaging Segmentation Computer vision Process (anatomy) Physician-Patient Relations business.industry Communication General Medicine Surgery Data set Orbital Neoplasms Artificial intelligence Tomography X-Ray Computed business Orbit |
| Zdroj: | Radiologic Clinics of North America. 36:1261-1279 |
| ISSN: | 0033-8389 |
| DOI: | 10.1016/s0033-8389(05)70244-x |
| Popis: | Three-dimensional imaging is a computerized postprocessing technique based on a stack of tomographic images as acquired in CT, MR imaging, or ultrasonography. It allows for a topographic overview image of selected anatomic or pathologic structures that have been isolated (a process called segmentation ) from the imaged tissue volume. This topographic image is computer generated and displays the structure of interest in such a way that the shading of its surface (a technique called surface rendering ) mimicks a photograph of this structure as if it had been physically removed from the patient's body. The purpose of three-dimensional imaging is to enhance the comprehension of the three-dimensional shape and extent of pathologic structures to the surgeon, radiotherapist, or diagnostician, especially in those cases where complexity precludes this comprehension by mental integration of the imaged cross-sections. 73 The complexity of orbital anatomy and the associated pathology turn three-dimensional imaging into a unique tool to assess congenital disorders involving the orbit. 78 As a result, it improves the patient's treatment. This means that three-dimensional imaging contributes both to diagnosis as well as to surgical planning, 14 and as such it plays its own role next to the primary projectional and cross-sectional images of the various imaging modalities (e.g., radiography, ultrasonography, CT, MR imaging, nuclear medicine, and so forth). It can be used for imaging only, but also for quantitative assessment of a deformity by the extraction of distances, angles, and volumes from the three-dimensional surface description and its underlying volumetric data set. 36,71 It can also be used to simulate the ideal surgical result by editing the original three-dimensional data set followed by reconstruction of a new three-dimensional image. This is usually done with mirror imaging 25,36,68,72 or by displacement of parts of the patient's anatomy. 24 Three-dimensional imaging can even be used for the manufacturing of life-size replicas of the patient's morphology. 1,71 Such replicas, in addition to their tactile and visual value, are applicable to rehearsal of the surgery 28,77 and the design of implants, 76 with or without the use of mirror imaging. 25,37 |
| Databáze: | OpenAIRE |
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