Digital selenium radiography: detection of subtle pulmonary lesions on images acquired with and without an additional antiscatter grid

Relationship between body habitus and image quality and radiation dose in chest X-ray examinations: A phantom study

“…5) demonstrate that the additional fat thickness increases the radiation dose by 151 % compared with that of the standard phantom size across all of the xray machines with a statistical significant difference (P=0.002). Comparable results regarding the influence of additional fat thickness on radiation dose were reported in study by Otto et al [32] and study be Perez et al [33]. In our study, the larger size phantom was observed to have both higher IAK and lower IQ compared with that of the standard size phantom.…”

“…All of these focused on average sized patients did not consider optimisation for overweight and obese patients. Only a limited number of phantom studies have been conducted to investigate the impact of acquisition parameters on IQ and radiation dose for the larger body size patients in CXR [9,32]; however, these studies investigated the influence of only some parameters and did not cover all the acquisition parameters.…”

Impact of body part thickness on AP pelvis radiographic image quality and effective dose

“…Our method was a simplification of the "apples" and "pears" distributions more typically observed in adult body types 5,11,12 . This would be where the additional body fat would predominantly accumulate in the anterior structures. Many studies have simulated additional soft tissue material either above or below the phantom 13,14 . Commercially available animal fat (lard) was placed inside a rectangular plastic box placed on the anterior surface of the phantom (Figure 1).…”

“…With the simulations the weight of the phantom was modified for each one cm increase in fat thickness (one kg increase per 0.96 cm increase in AP diameter). This formula was based on the study conducted by Miyatake 23 assuming a linear relationship between increasing waist circumferences and weight 13,24,25 .…”