نتایج جستجو برای: hounsfield unit
تعداد نتایج: 395420 فیلتر نتایج به سال:
Current minimally invasive interventions for ureteric stones involve either ESWL or Ureteroscopy and stone localization is mandatory successful treatment in both. Objectives: To avoid doing KUB radiograph before routinely by correlating the attenuation value on CT with visualization at fluoroscopy. Methods: This a prospective cross sectional hospital based, Multicentric study carried out 1010 p...
Assessing bone density in prospective dental implant sites is crucial both for choosing the type and planning a drilling procedure that will ensure implant’s primary stability osseointegration. This study aimed to investigate possible differences between densities of various edentulous maxilla mandible. The was conducted on group forty partly patients who underwent radiological examination by s...
AIM The aim of this study was to evaluate the fracture resistance of various provisional crown materials using an in vitro model test system. METHODS AND MATERIALS In the present study polycarbonate crowns, prefabricated by the manufacturer (3M Polycarbonate Crown), and the temporary crowns, fabricated in the dental laboratory environment, were fabricated using bis-acryl composite (Protemp II...
Extracorporeal Shock Wave Lithotripsy (ESWL) is still the treatment of choice for most renal and upper ureteric stones; however the outcome depends on multiple factors. The objective of this study was to investigate the effects of stone density, as measured by Hounsfield Units (H.U) by non-contrast Computerized Tomography (CT), stone size and stone location on ESWL treatment outcome of urinary ...
Introduction: In radiotherapy treatment planning system (TPS), basic input is the data from computed tomography (CT) scan, which takes into account the effect of inhomogeneities in dose calculations. Measurement of CT numbers may be affected by scanner-specific parameters. Therefore, it is important to verify the effect of different CT scanning protocols on Hounsfield unit (HU) and its impact o...
BACKGROUND The application of spacer gel represents a promising approach to reliably spare the rectal frontal wall during particle therapy (IJROBP 76:1251-1258, 2010). In order to qualify the spacer gel for the clinical use in particle therapy, a variety of measurements were performed in order to ensure the biological compatibility of the gel, its physical stability during and after the irradia...
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