Biologic therapy correlated with a significant decrease in FAI at one year (median FAI, −71 22 Hounsfield
units [HU] at baseline versus −76.09 HU at one year), with concurrent improvement in skin disease (median Psoriasis Area Severity Index, 7.7 at baseline versus 3.2 at one year); those not receiving biologic therapy had no change in FAI (median FAI, −71.98 HU versus −72.66 HU).
The X-ray imaging work was undertaken at the Hounsfield
Facility at the University of Nottingham.
Absolute attenuation values in Hounsfield
units (HU) were determined by drawing regions of interest (ROIs) of 120 [mm.sup.2] in the lumens of the ascending and descending aorta, main pulmonary artery, superior vena cava, right and left atrium, right and left ventricle, erector spina muscle, and subcutaneous fat tissue.
In the SA group, stone area and the Hounsfield
unit of the stone on computed tomography was significantly lower than in the GA group (p<0.001 and p=0.007, respectively).
The vulcanized sheets of 2 mm thickness were cut into dumbbell specimens using a type C die, and tensile testing was carried out using a Hounsfield
tensile tester (H10KS, Hounsfield
Test Equipment, U.K.) at a crosshead speed of 500 mm/minute according to ASTM D412.
Firstly, the threshold of bone scale selected before cropping for skeletal observation representing by the bone Hounsfield
Units (HU) was chosen with a minimum limit of (-1024) Hounsfield
Units (HU) and a maximum of (1650) HU.
The lesion was homogenously hypodense with Hounsfield
unit suggestive of air content with no enhancement post-contrast.
(10) Higher grades of disease extent and lower Hounsfield
densities correspond to increased audiologic air and bone conduction thresholds for hearing stimulation, as well as an increased incidence of stapes footplate complications at time of surgery.
Pre- and post-contrast attenuation reference values for the main celomic organs are reported in Hounsfield
Stone nephrolithometry score system was proposed by Okhunov et al7 and is based on 5 variables obtained from non-contrast enhanced computed tomography which include stone size (millimeter-squared, mm2), tract length (skin-to-stone distance in mm), degree of obstruction (presence of hydronephrosis), number of involved calices, and stone essence (stone density in Hounsfield
6 // HOUNSFIELD
SURGERY // NHS NEWARK AND SHERWOOD CCG