ABSTRACT
Existing and active low-energy Accelerator-Based BNCT programs worldwide will be reviewed and compared. In particular, the program in Argentina will be discussed which consists of the development of an Electro-Static-Quadrupole (ESQ) Accelerator-Based treatment facility. The facility is conceived to operate with the deuteron-induced reactions 9Be(d,n)10B and 13C(d,n)14N at 1.45 MeV deuteron energy, as neutron sources. Neutron production target development status is specified. The present status of the construction of the new accelerator development laboratory and future BNCT centre is shown.
ABSTRACT
In this work we provide some information on the present status of accelerator-based BNCT (AB-BNCT) worldwide and subsequently concentrate on the recent accelerator technology developments in Argentina.
Subject(s)
Boron Neutron Capture Therapy/instrumentation , ArgentinaABSTRACT
The activity in accelerator development for accelerator-based BNCT (AB-BNCT) both worldwide and in Argentina is described. Projects in Russia, UK, Italy, Japan, Israel, and Argentina to develop AB-BNCT around different types of accelerators are briefly presented. In particular, the present status and recent progress of the Argentine project will be reviewed. The topics will cover: intense ion sources, accelerator tubes, transport of intense beams, beam diagnostics, the (9)Be(d,n) reaction as a possible neutron source, Beam Shaping Assemblies (BSA), a treatment room, and treatment planning in realistic cases.
Subject(s)
Boron Neutron Capture Therapy/instrumentation , Particle Accelerators/instrumentation , Radiometry/instrumentation , Equipment Design , Equipment Failure Analysis , Internationality , Technology Assessment, BiomedicalABSTRACT
BACKGROUND: This paper aims to analyse socioeconomic variation in the use of cheese and butter in Europe by reviewing existing dietary surveys. It explores whether socioeconomic differences in the intake of these foods follow a similar pattern in all countries. METHODS: An overview of available studies on socioeconomic differences in food habits in Europe over the period 1985-1997 was performed. Twenty studies from 10 countries included information on cheese and butter. A simple directional vote-counting method was used to register the association between educational level and consumption of cheese and butter (animal fat) for each study. FAO's food balance sheets were used to classify the countries according to consumption trends of these foodstuffs. RESULTS: In all countries higher social classes used more cheese than lower classes. The results for butter were less consistent. In the Nordic countries higher social classes used less butter than lower ones. In the other countries an opposite pattern or no differences could be observed. However, in countries where the use of both butter and animal fats could be analysed, animal fats were used more by the lower social classes. CONCLUSIONS: Higher and lower socioeconomic groups have different sources of saturated fats. Higher social classes use more cheese whereas lower social classes use more butter or animal fats. This can be observed especially in countries where the consumption of cheese is increasing and that of butter decreasing. Higher social classes prefer modern foods, lower classes traditional foods.
Subject(s)
Butter/statistics & numerical data , Cheese/statistics & numerical data , Diet Surveys , Educational Status , Europe , Female , Food Preferences , Humans , Male , Social ClassABSTRACT
We report a case of cervical ectopic pregnancy that was diagnosed using transabdominal ultrasound. Conservative management with methotrexate administration was undertaken and, following a period of heavy bleeding, bilateral uterine artery embolization was performed. Two weeks after presentation, the gestational sac was shown to have reduced in size. We describe the ultrasound findings in this case and discuss those reported in the literature along with the available management options.
Subject(s)
Abortion, Therapeutic/methods , Pregnancy, Ectopic/diagnostic imaging , Ultrasonography, Prenatal , Adult , Cervix Uteri , Female , Follow-Up Studies , Gestational Age , Humans , Methotrexate/administration & dosage , Pregnancy , Pregnancy Outcome , Pregnancy, Ectopic/therapyABSTRACT
This pictorial essay reviews the normal appearances and the post-operative complications of intervertebral cages. These are implants which are being more widely used in spinal surgery. The text outlines the background leading to their development, the clinical indications and surgical techniques for insertion of the cages. The normal post-operative appearance of fusion and the complications that can occur are emphasized.
Subject(s)
Prostheses and Implants , Spinal Diseases/surgery , Spinal Fusion/instrumentation , Adult , Female , Humans , Magnetic Resonance Imaging , Male , Middle Aged , Postoperative Complications/diagnosis , Spinal Diseases/diagnostic imaging , Tomography, X-Ray ComputedABSTRACT
We describe 120 patients with regional lymphadenitis following intradermal BCG vaccination. Seventy-eight of the patients were given medical therapy to prevent drainage and suppuration, and 42 patients were followed up without such treatment. The medical therapy group is divided into three subgroups: 36 were given erythromycin stearate, 21 isoniazid, and 21 isoniazid plus rifampin. No statistical difference in the incidence of spontaneous drainage and suppuration was found between the "no therapy" and the "medical therapy" groups. No significant superiority of any specific therapy was shown. If lymphadenitis develops rapidly (in two months), the incidence of spontaneous drainage and suppuration is significantly higher than in patients with slowly developing lesions. Total surgical excision is recommended to prevent spontaneous drainage and chronic suppuration in these rapidly evolving instances.
