Abstract
The purpose of this study was to determine the acquisition and interpretation times of screen-film mammography and soft-copy digital mammography in a diagnostic mammography center.
The study was conducted in three phases for patients presenting for clinical diagnostic workup to a mammography clinic....
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PMID: 20646940
PDF is available here.
Abstract
Twenty-eight test plates (56%) exhibited growth of bacterial colonies on blood agar. Seventeen of those bacterial colonies were selected for growth on M-S agar, and 13 (76.47%) showed growth, 69% of them gram positive. CONCLUSION: Our results indicate reinforcing standard precautions of infection co...
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PMID: 20060337
PDF is available here.
Abstract
Diagnostic imaging techniques (DIxT) seem to be a useful tool for evaluating bone formation in both human and animal models. There is little evidence on the use of Soft X-Rays (sXR) with high-resolution films for studying the healing process in critical bone size defects (CSD). The aim of this study...
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PMID: 20645640
PDF is available here.
Abstract
BACKGROUND: Traditionally, conventional radiography has been used to identify the structural damage associated with juvenile idiopathic arthritis (JIA). As other modalities have developed, however, the practice of assessing and monitoring JIA with radiographs has been questioned. OBJECTIVE: The purp...
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PMID: 20207788
PDF is available here.
Abstract
With new advancements in radiochromic film designs and sensitivity to suit different niche applications, EBT2 is the latest offering for the megavoltage radiotherapy market. New construction specifications including different physical construction and the use of a yellow coloured dye has provided th...
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PMID: 20169838
PDF is available here.
Abstract
Age estimation by the measurement method is to get the data such as the length, width, thickness, area of the ossification center, transverse diameter of the metaphysis, transverse diameter of osteoepiphysis, width of the epiphyseal line and the ratio between the diaph and the epiphyseal, by measuri...
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PMID: 20000051
PDF is available here.
Abstract
We found that certain mid-range consumer level digital SLR cameras using full-frame CMOS sensors outperform x-ray film in acquiring signals from immunoblots that use enhanced chemiluminescence for detection. These cameras exhibit a sensitivity comparable to x-ray film, yet provide a 3-fold increase...
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PMID: 19788886
PDF is available here.
Abstract
Although the half-value layer (HVL) is one of the important parameters for QA and QC, constant monitoring has not been performed because the measurements using an ionization chamber (IC) are time-consuming and complicated. To solve these problems, the use of radiochromic film (GAFCHROMIC XR TYPE R:...
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PMID: 19873939
PDF is available here.
Abstract
The goal of Task Group 25 (TG-25) of the Radiation Therapy Committee of the American Association of.Physicists in Medicine (AAPM) was to provide a methodology and set of procedures for a medical physicist performing clinical electron beam dosimetry in the nominal energy range of 5-25 MeV. Specifical...
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PMID: 19673223
PDF is available here.
Abstract
A total of 263 breast cancers were detected. After adjustment for age, ethnicity, area of residence, and type of referral, there was no evidence of differences between FFDM and SFM in terms of detection rates (0.68 [95% confidence interval {CI}: 0.47, 0.89] vs 0.72 [95% CI: 0.58, 0.85], respectively...
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PMID: 19401569
PDF is available here.
Abstract
Interventional cardiological examinations may be associated with excessive radiation exposures which may cause skin injuries and higher probabilities of stochastic effects. Dose-area product (DAP) and skin doses of 325 patients were measured using alternative dosimetric techniques fo...
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PMID: 18440265
PDF is available here.
Abstract
Interventional cardiological examinations may be associated with excessive radiation exposures which may cause skin injuries and higher probabilities of stochastic effects. Dose-area product (DAP) and skin doses of 325 patients were measured using alternative dosimetric techniques fo...
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PMID: 18440265
PDF is available here.
Abstract
Interventional cardiological examinations may be associated with excessive radiation exposures which may cause skin injuries and higher probabilities of stochastic effects. Dose-area product (DAP) and skin doses of 325 patients were measured using alternative dosimetric techniques fo...
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PMID: 18440265
PDF is available here.
Abstract
Interventional cardiological examinations may be associated with excessive radiation exposures which may cause skin injuries and higher probabilities of stochastic effects. Dose-area product (DAP) and skin doses of 325 patients were measured using alternative dosimetric techniques fo...
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PMID: 18440265
PDF is available here.
Abstract
Clinical interpretation of intraoral and panoramic radiographic images regarding bone quality should be taken carefully. Research is also indicated to further develop such selection criteria....
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PMID: 19357613
PDF is available here.
Abstract
For residual lateral motion, the local deviations were <5% for 2, 4, and 7 mm residual motion within the gating window for a 2-mm scan grid and pencil beams of 10, 14, and 18 mm full width at half maximum, respectively. Decreasing the iso-range slice distance from 3 mm to 1 mm effectively mitigated...
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PMID: 19251099
PDF is available here.
Abstract
Dental radiology is the core diagnostic modality of veterinary dentistry. Dental radiographs assist in detecting hidden painful pathology, estimating the severity of dental conditions, assessing treatment options, providing intraoperative guidance, and also serve to monitor success o...
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PMID: 19410234
PDF is available here.
Abstract
The findings indicate that variability in radiation exposure to the CR imaging plate does not adversely affect the quality of the digital image. Optical density and low-density differences were stable throughout the wide range of exposures. Radiographic contrast appeared to decrease for the high-den...
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PMID: 19153197
PDF is available here.
Abstract
OBJECTIVES: To find out the causes, number, percentage and sizes of rejected radiographic films with a view of adopting measures that will reduce the rate and number of rejected films. SETTING: Radiology Department of a University Teaching Hospital. MATERIALS AND METHODS: Over a two-year period (1st...
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PMID: 19320410
PDF is available here.
Abstract
Higher proportions of correct readings were obtained with the conventional film (Kodak Insight) and CCD receptor compared with the PSP receptor used in this study (PSP < CCD
PDF is available here.
Abstract
DIFOTI images correlated with clinical depth, especially in smaller lesions, and improved the estimation of lesion size when used in conjunction with the CMOS digital sensor and D-speed images. CLINICAL IMPLICATIONS: Using radiographs in combination with DIFOTI images could help clinicians determine...
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PMID: 18832273
PDF is available here.
Abstract
The mean scores on DR and SF for overall image quality, intestinal mucosa definition and bone visualization were 4.49 vs. 3.17, 4.38 vs. 3.4, and 4.5 vs. 2.4, respectively (p<0.001 in all cases). The average radiation dose with DR was 0.93+/-0.54 cGy, and -1.58+/-0.63 cGy with SF (p=0.016), reflecti...
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PMID: 18620843
PDF is available here.
Abstract
We found that, for a given set of processing parameters, the CNR was related to the plate air kerma and effective dose in a logarithmic manner (all R(2) >or=0.97). For imaging of the lung region, a low voltage (60 kVp) produced the highest CNR, whereas a high voltage (125 kVp) produced the highest T...
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PMID: 18662964
PDF is available here.
Abstract
Although radiographs are an indispensable diagnostic tool, the increased effective doses of common intraoral and extraoral imaging techniques are high enough to warrant reconsideration of means to reduce patients' exposure. CLINICAL IMPLICATIONS: Clinicians can reduce patients' dose substantively by...
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PMID: 18762634
PDF is available here.
Abstract
Accurate measurement and knowledge of dose delivered during superficial x-ray radiotherapy is required for patient dose assessment. Some tumours treated near the surface (within the first few centimetres) can have large posterior bone structures. This can cause perturbations to dose delivered due to...
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PMID: 18695297
PDF is available here.
Abstract
The aims of this study were to compare film and digital radiography in assessing the radiopacities of root canal sealers and to establish the relation in aluminum equivalent values of different methods. Standard disks of 5 different sealers were exposed together with an aluminum step wedge by using...
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PMID: 18718374
PDF is available here.
Abstract
The purpose of this study was to compare three direct digital sensors (Kodak 6100 [Rochester, NY], Schick CDR [Long Island City, NY], and Dexis PerfectSize [Alpharetta, GA]), a phosphor plate system (OpTime; Milwaukee, WI), and F-speed film to standard D-speed film in the detection of artificial bon...
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PMID: 18718376
PDF is available here.
Abstract
No difference was found between the intraoral CCD sensor and conventional radiography in detecting vertical root fractures for single rooted maxillary premolars ex vivo....
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PMID: 18299217
PDF is available here.
Abstract
Film dosimetry is an attractive tool for dose distribution verification in intensity modulated radiotherapy (IMRT). A critical aspect of radiochromic film dosimetry is the scanner used for the readout of the film: the output needs to be calibrated in dose response and corrected for pixel value and s...
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PMID: 18697531
PDF is available here.
Abstract
Film dosimetry using radiochromic EBT film in combination with a flatbed charge coupled device scanner is a useful method both for two-dimensional verification of intensity-modulated radiation treatment plans and for general quality assurance of treatment planning systems and linear accelerators. Un...
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PMID: 18697534
PDF is available here.
Abstract
Since its introduction the PinPoint (PTW-Freiburg) micro-ionization chamber has been proposed for relative dosimetry (output factors, depth dose curves, and beam profiles) as well as for determination of absolute dose of small high-energy photon beams. This paper investigates the dosimetric performa...
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PMID: 18697554
PDF is available here.
Abstract
There was no significant difference in landmark identification between MDM and HFM....
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PMID: 18538235
PDF is available here.
Abstract
We prospectively compared the utility and precision of preoperative templating performed in printed films (analogue) with that performed on digital radiographs (digital) in 69 patients undergoing primary total hip replacement. Five patients were excluded when misplacement of the marker resulted in a...
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PMID: 17404731
PDF is available here.
Abstract
Intraobserver reproducibility was substantial (kappa = 0.798 and 0.667). Also, the two examiners showed substantial agreement (kappa = 0.726). There was a significant difference (alpha = 1%) between the scores for the films under study. At a 30 cm distance, E-speed films had mean scores of 4 and 5 a...
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PMID: 18460576
PDF is available here.
Abstract
We demonstrate how this calibrated film can be used to measure the spectrum and total energy of a laser generated proton beam. This technique was applied to an experiment on the 10 J, 100 fs Callisto laser at Lawrence Livermore National Laboratory. The resulting proton spectrum was compared to that...
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PMID: 18513063
PDF is available here.
Abstract
In this study the performance of a new mammographic film, the XMA (Retina), was evaluated in comparison with HT (Agfa). The comparison was made in terms of sensitometric characteristics and in terms of image quality and speed when combined with four different cassettes-HDS (Agfa), Min-R 2000 and Min...
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PMID: 18332725
PDF is available here.
Abstract
The lesion type significantly influenced the validity of CD measurements: enamel lesions were less underestimated than dentin lesions....
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PMID: 18316505
PDF is available here.
Abstract
The ability of an observer to detect objects on a radiograph is influenced by the conditions under which the image is viewed. Therefore, to ensure that as much diagnostically relevant information as possible can be extracted from the image, it is important that satisfactory viewing conditions for th...
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PMID: 18270296
PDF is available here.
Abstract
Orthodontic care, in part due to its high prevalence, potentially contributes significantly to the diagnostic radiation burden in those less than 19 years old in the United States....
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PMID: 18249287
PDF is available here.
Etta D Pisano,
R Edward Hendrick,
Martin J Yaffe,
Janet K Baum,
Suddhasatta Acharyya,
Jean B Cormack,
Lucy A Hanna,
Emily F Conant,
Laurie L Fajardo,
Lawrence W Bassett,
Carl J D'Orsi,
Roberta A Jong,
Murray Rebner,
Anna N A Tosteson,
Constantine A Gatsonis and
DMIST Investigators Group
Abstract
Thirty-three centers enrolled 49 528 women. Breast cancer status was determined for 42,760 women, the group included in this study. Pre- or perimenopausal women younger than 50 years who had dense breasts at film mammography comprised the only subgroup for which digital mammography was significantly...
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PMID: 18227537
PDF is available here.
Abstract
The aims of this study were to evaluate the quality of indirect digitized radiographic images taken during endodontic procedures and to compare the measurements recorded with this technique to those obtained from conventional radiographs. Two-hundred conventional periapical radiographs taken at the...
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PMID: 19089211
PDF is available here.
Abstract
Radiographic film dosimetry provides fast, convenient 2-D dose distributions, but is challenged by the dependence of film response on scatter conditions (i.e., energy dependence). Verification of delivered dose in the surface buildup region is important for intensity modulated radiation therapy (IMR...
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PMID: 19020480
PDF is available here.
Abstract
We investigated the ferrous sulfate-benzoic acid-xylenol orange (FBX) aqueous chemical dosimeter for measurement of virtual (dynamic) wedge profiles on a linear accelerator. The layout for irradiation of the FBX-filled tubes mimicked a conventional linear detector array geometry. A comparison of the...
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PMID: 19020486
PDF is available here.
Abstract
The rotational total skin electron irradiation (RTSEI) technique at our institution has undergone several developments over the past few years. Replacement of the formerly used linear accelerator has prompted many modifications to the previous technique. With the current technique, the patient is tr...
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PMID: 19020483
PDF is available here.
Abstract
The study demonstrates that digital and analog measuring methods are comparable with regard to absolute alveolar bone measurements and intra-observer agreement. Inter-observer comparison demonstrated significantly higher agreement for the digital measurements. Based on the overall results, the modal...
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PMID: 18932094
PDF is available here.
Abstract
The requirements of quality assurance (QA) for both brachytherapy and imaging devices are well-defined, but image-guided brachytherapy has raised new issues. Image guidance in brachytherapy involves the transition from reference point dosimetry using films to volumetric imaging such as computed tomo...
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PMID: 18406913
PDF is available here.
Abstract
This study compared the newly introduced direct digital radiographic (DDR) system (RVG-6000) with conventional bitewing radiographs (D-speed film) to estimate the extension of Class II caries lesions. The patient's discomfort related to placement of each radiographic packet was also evaluated. Fifty...
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PMID: 19051853
PDF is available here.
Abstract
The equivalent aluminum thickness method is not suitable for materials of low radio-opacity, while the attenuation coefficient method could be used for all without difficulty. The digital system gave attenuation coefficients of greater precision than did film, but the use of automatic gain control (...
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PMID: 17923153
PDF is available here.
Abstract
The aim of this ex vivo study was to compare visual clinical and radiographic examinations to the histological analysis for proximal caries diagnosis in extracted permanent molars and premolars. The relationship between clinical aspects and carious lesions was also evaluated. Eighty-eight proximal s...
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PMID: 18568221
PDF is available here.
Abstract
In Slovenia, dental radiography was the first field in which projection x-ray imaging using digital detectors was done. At present around 30% of intraoral dental x-ray units use digital detectors. Annual test results were analysed to compare digital systems with film-based ones. The survey results s...
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PMID: 18375462
PDF is available here.
Abstract
This study presents the findings from acceptance testing and routine quality control (QC) of general radiographic X-ray equipment in Ireland during 2006 and early 2007, including mobile X-ray units and film/screen fixed systems. Acceptance testing and routine QC of the diagnostic X-ray imaging equip...
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PMID: 18326885
PDF is available here.
Abstract
In this study, unenhanced digital imaging was found to be superior to conventional F-speed film and inversion-enhanced digital images for accurately imaging periodontal osseous defects in patients....
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PMID: 18033948
PDF is available here.
Abstract
Instead of increasing the tube voltage or using additional lead foils or metal film holders, a substantial dose reduction is provided by digital radiography or more sensitive films while a low tube potential level is maintained and the milliampere seconds setting is reduced....
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PMID: 18033949
PDF is available here.