The aims of this study are to design, construct and evaluate the applicability of a head and neck Perspex phantom for dosimetric verification of intensity modulated radiation therapy (IMRT). Thermoluminescent dosimeters (TLDs) was used in this study. Consistency of the fabricated phantom readings was checked by multiple IMRT irradiations. The inter-fraction standard deviation among all TLDs’ me...

A method for the determination of minimum inhibitory concentration (MICs) is described, in which commercially prepared antibiotic sensitivity testing discs are used as primary antibiotic standards from which the necessary dilutions are prepared in WHO Perspex haemagglutination plates. The materials required are readily available in most laboratories at a cost in time and reagents that compares ...

Several substances/food baits and admixtures thereof were tested in a perspex trap, treated with insecticide [email protected] mg/cm2. Bioefficacy for housefly trapping was evaluated. Combination of ingredients was found to be more effective than individual ingredients. A combination of some easily available and cheap ingredients were employed for field trials. The admixtures of milk powder, dog b...

A soil nailing system is a proven effective and economic method used to stabilize earth slopes from the external (factors increasing shear stress) internal decreasing material strength) failure causes. The laboratory models with scales of 1:10 are study behavior nailed slope different building foundation parameters. consist Perspex strips as facing steel bars increase stability slope. sand beds...

correctly diagnosed by CT scan have been described.6 Ultrasonography has been advocated in view of its availability, low cost, and high detection rates. One study,3 using porcine eyes, reported an overall IOFB detection rate by ultrasound of 930/O compared with 40°/O by plain x ray. Significantly, Bryden et al's detection rate for Perspex was 96%. Localisation is, of course, less accurate and t...

Introduction: The head scatter factor (Sc) is one of the important parameters for monitor unit (MU) calculation. There are multiple factors that impact the Sc values, such as, head structures, back scattering in to dose monitoring chambers, wedges and so on. This study aimed to investigate the variations of SC with different build-up cap materials, wall thickness, Source to ...

Introduction: The use of low energy isotopes such as  103 Pd in brachytherapy for the treatment of cancers  such as prostate, eye, head, neck, breast and cervix is increasing. In this regard, different models of Pd- 103  seeds  have  been  designed  and  manufactured  at  the  Agricultural,  Medical  and  Industrial  Research  School (AMIRS) of Atomic Energy Organization of Iran. In this resear...

With conventional diagnostic X-ray machines with over couch X-ray tubes, it is not possible to obtain anteroposterior (AP) and lateral (Lat) radiographs without changing the posture of the patients. In an old 300 mA X-ray machine with a fluoroscopy screen (12.4 kg) (1995 model), by substituting the screen with suitable counterweight and making provision to take the hoist pillar up to the edge o...