in the current study, floating dosage form containing acyclovir was developed to increase its oral bioavailability. effervescent floating tablets containing 200 mg acyclovir were prepared by direct compression method with three different rate controlling polymers including hydroxypropyl methylcellulose k4m, carbapol 934, and polyvinylpyrrolidone. optimized formulation showed good floating prope...

introduction: the image quality as well as film speed is influenced by the film processing conditions. different combinations of films and processing methods affect the diagnostic accu-racy. temperature and developer exhaustion result in different image quality. the purpose of this study was to evaluate the influence of film type and processing conditions on caries detec-tion.  material and met...

introduction: inappropriate condensation of gutta-percha or improper use of sealer can lead to voids in root canal filling material and consequent failure of the treatment. timely detection of voids within root canal filling may prevent complications. in this study, we compared the accuracy of digital and conventional radiograph for detecting voids within root canal fillings . materials & metho...

In recent years, X-ray radiography has been used to probe the internal structure of dense sprays with microsecond time resolution and a spatial resolution of 15 µm even in high-pressure environments. Recently, the 7BM beamline at the Advanced Photon Source (APS) has been commissioned to focus on the needs of X-ray spray radiography measurements. The spatial resolution and X-ray intensity at thi...

endobronchial tuberculosis and chest radiography i read, with interest, the article entitled “clinical and para-clinical presentations of endobronchial tuberculosis” by ahmadi hoseini h. s. et al. (1) published in this journal. i would like to focus on some details about the chest x-ray of patients as elaborated by the authors in the results section. accordingly, the findings of chest radiograp...

background: tins research was conduced to estimate the positive predictive value of physicians at kerman emergency services for traumatic patients who referred to radiology department of kerman hospital in 2001. methods: this study was a cross-sectional study and carried out on 353 patients. a questionnaire was used as a research instrument. results: three radiologists reported the films separa...

introduction quality control techniques used to test the components of the radiological system and verify that the equipment is operating satisfactorily. in this study, quality control (qc) assessment of conventional radiology devices was performed in frequently visited radiology centers of khuzestan province, iran. materials and methods fifteen conventional radiology devices were examined, bas...

conclusions because this incident may have occurred during the patient’s neonatal period, it may be a case of child abuse. in spite of the very limited number of cases in the literature, having a stepmother, a stepfather, or a babysitter, being the youngest child, or having family members who suffer from psychiatric disorders, (especially if these relatives are responsible for child care), livi...