Optimising default radiographic exposure factors using Deviation Index

Feasibility of new patient dose management tool in digital radiography: Using clinical exposure index data of mobile chest radiography in a large university hospital

“…The degree of underexposure or overexposure can be determined by using the DI value. According to the derivation formula of DI as per IEC, there is an exposure difference when the DI is ±1 of approximately ±1.2 times that of EI T , approximately ±1.6 times when the DI is ±2, and approximately ±2 times when the DI is ±3 [ 8 , 12 , 29 ]. Therefore, to use EI as a tool for determining the level of incident dose on the patient and obtaining the optimal image quality, it is essential to set the appropriate EI T and assess the degree of exposure through the displayed DI value [ 15 , 17 , 19 ].…”

From the use of exposure index in quality control testing to the use of exposure index for quality control of clinical images

“…However, it may also reveal drifts in the AEC operation which may be due to malfunction. The use of DI is especially useful in mobile units, where the lack of AEC may give rise to significant over-exposures [12] .…”

Implementasi Pemahaman Radiografer terhadap Exposure Index dalam Optimasi Prosedur Pemeriksaan Radiografi Computed Radiography

“…Penggungaan faktor eksposi rendah pada CR menunjukan underexposure yaitu penurunan kualitas citra akibat quantum mottle. Kemudian peningkatan paparan dapat menurunkan noise, akan tetapi juga dapat meningkatkan dosis radiasi kepada pasien yang disebut dengan Overexpose dimana terjadi pada peningkatan paparan sehingga citra menjadi saturated menyebabkan kualitas citra mengalami menurun dan dosis radiasi semakin meningkat (Creeden & Curtis, 2020).…”