نتایج جستجو برای: radiographic film classification
تعداد نتایج: 606083 فیلتر نتایج به سال:
OBJECTIVE The objective of this study was to estimate the sensitivity of plain radiographs in identifying bony or ligamentous cervical spine injury in children. METHODS We identified a retrospective cohort of children younger than 16 years with blunt trauma-related bony or ligamentous cervical spine injury evaluated between 2000 and 2004 at 1 of 17 hospitals participating in the Pediatric Eme...
Radiographic film dosimetry suffers from its energy dependence in proton dosimetry. This study sought to develop a method of measuring proton beams by the film and to evaluate film response to proton beams for the constancy check of depth dose (DD). It also evaluated the film for profile measurements. To achieve this goal, from DDs measured by film and ion chamber (IC), calibration factors (rat...
ABSTRACT Background: The radiographic image accuracy depends on the X-ray film information visibility. Good visibility is found by good contrast. Radiation exposure parameters (kVp, mAs) and film processing conditions have impact on contrast. In dentistry radiography machines, exposure time and processing procedure are set by radiographer. No optimized exposure time and process...
Background & Objective: Calcifying Odontogenic Cyst (COC) (Gorlin) is an uncommon odontogenic lesion. In new classification was named as cystic calcifying odontogenic tumor. Thus, COC which is associated with odontoma is uncommon. There is little information combined lesion, therefore, a case of COC with complex odontomawas reported here. Case Report: The patient was a 39 year old male whic...
OBJECTIVE To correlate the Ahlbäck radiographic classification with the anterior cruciate ligament (ACL) status in knee arthritis patients. METHODS The study evaluated 89 knees of patients who underwent total knee arthroplasty due to primary osteoarthritis: 16 male and 69 females, with mean age 69.79 years (53-87 years). Osteoarthritis was classified radiographically by the Ahlbäck radiograph...
The accuracy of the photon convolution/superposition dose algorithm employed in a commercial radiation treatment planning system was evaluated for conditions simulating tangential breast treatment. A breast phantom was fabricated from machineable wax and placed on the chest wall of an anthropomorphic phantom. Radiographic film was used to measure the dose distribution at the axial midplane of t...
BACKGROUND Doubts have been expressed about the performance of the American College of Rheumatology (ACR) clinical classification criteria for osteoarthritis when applied in the general population. OBJECTIVE To investigate whether the distribution of population subgroups and underlying disease severity might explain the performance of these criteria in the population setting. METHODS Popula...
BACKGROUND This study aimed to evaluate emergency medicine doctors' accuracy in predicting the need of film printing in a simulated setting of computed radiography and assess whether this can facilitate optimal patient care. METHODS Cross sectional study was conducted from 20 March 2009 to 3 April 2009 in 1334 patients. After clinical assessment of those patients who needed X-ray examination,...
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