High-ratio grid considerations in mobile chest radiography

Purpose: Grids are often not used in mobile chest radiography, and when used, they have a low ratio and are often inaccurately aligned. Recently, a mobile radiography automatic grid alignment system (MRAGA) was developed that accurately and automatically aligns the focal spot with the grid. The obje...

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Veröffentlicht in:	Medical physics (Lancaster) 2012-06, Vol.39 (6), p.3142-3153
Hauptverfasser:	Scott, Alexander W., Gauntt, David M., Yester, Michael V., Barnes, Gary T.
Format:	Artikel
Sprache:	eng
Schlagworte:	60 APPLIED LIFE SCIENCES AIR ALUMINIUM anti-scatter grid BACKGROUND NOISE Computed radiography Computed tomography Computerised tomographs computerised tomography COMPUTERIZED TOMOGRAPHY diagnostic radiography Digital computing or data processing equipment or methods, specially adapted for specific applications DOSIMETRY Dosimetry/exposure assessment Image data processing or generation, in general IMAGE PROCESSING Image sensors LAYERS LUCITE lung LUNGS MANUFACTURERS MEDIASTINUM Medical image noise medical image processing Medical imaging Medical X‐ray imaging mobile radiography PATIENTS PHANTOMS Phantoms, Imaging RADIATION DOSES RADIATION PROTECTION AND DOSIMETRY Radiography Radiography, Thoracic - methods scatter control Signal-To-Noise Ratio Vacuum tubes X-RAY TUBES X‐ray scattering
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