Authors:G. Molnár, ZS. Révay, Á. Veres, A. Simonits and H. Rausch
The restart of the recently upgraded research reactor in Budapest is foreseen at the end of this year. A number of fast, thermal and cold neutron beams will serve for research, industrial and educational activities. One of the cold neutron guide end positions will be utilized for neutron capture prompt gamma-ray activation analysis (PGAA). Further development of the PGAA method as well as new applications in environmental research, biology and medicine are planned.
Authors:H. K. Pintér, K. K. Boros, E. Pálfi and G. Veres
In this study we assessed nutritional intake, body composition, and their relationship in patients with paediatric inflammatory bowel disease (IBD).
We conducted a longitudinal, prospective study of 38 patients' nutritional intake using 3-day food records (FR) and bioimpedance analysis of body composition. FR were evaluated by Nutricomp DietCAD software. Results were analysed with Microsoft Excel 2013 and IBM SPSS Statistics 22 software.
Patients treated with biological and conventional therapy (CT) had a higher intake of vegetable protein and carbohydrate from starch than those treated earlier with exclusive enteral nutrition (EEN) in the remission phase (F = 5.926, F = 5.130, P < 0.05). The former EEN group had a higher intake of iron compared to the other two groups (F = 3.967, P = 0.036). Protein intake and fat-free mass (FFM) had a significant positive correlation, while added sugar correlated with body fat mass (BFM) in the same way (R2 = 0.122, R2 = 0.169, P < 0.05). Body-fat mass in patients of the biological therapy (BT) group overstepped the healthy median, and the FFM in the EEN group stayed under it.
Our results confirm that it is essential to monitor body composition and not only measure body weight. Patients should be advised based on their body composition, therapy, and phase of the disease.
Authors:István Hartyánszky, A. Tóth, G. Veres, B. Berta, E. Zima, Z. Szabolcs, G. Y. Acsády, B. Merkely and F. Horkay
Background: Although circular ventricle resection techniques are the gold standard of left ventricle restoration, these techniques can lead to suboptimal results. Postoperative systolic resection line can be inadequate, as it must be planned on a heart stopped in diastole. The impaired geometry and contractility may lead to increased short- and long-term mortality. Moreover, postoperative low cardiac output due to insufficient left ventricular volume results in a potentially unstable condition, and cannot be corrected. Our aim was to find a preoperative method to minimize risk and maximize outcome with left ventricle restoration. Methods: We have created a novel method combining surgery with modern imaging techniques to construct a preoperative 3D systolic heart model. The model was utilized to determine resection could be intraoperatively used to create the new left ventricle. Results: The computer assisted ventricle engineering technique is described step by step through a successful aneurysmectomy of a 61-year-old female patient with a complicated giant left ventricle aneurysm. Conclusions: Using this model we are able to find the optimal resection line providing excellent postoperative result, thus minimizing the risk of low cardiac output syndrome. This is the first report of our new combined approach to left ventricle restoration.
Authors:G. Molnár, T. Belgya, L. Dabolczi, B. Fazekas, Zs. Révay, Á. Veres, I. Bikit, Z. Kiss and J. Östör
Prompt gamma-activation analysis (PGAA) is an important complementary technique to conventional instrumental activation analysis that can be successfully used in a number of cases when INAA is not applicable. Therefore, a PGAA facility has been constructed at the recently refurbished and upgraded Budapest Research Reactor. It occupies the end position of a new curved themal guide of 30 m length and 2.5×10 cm2 cross section which provides a clean beam of low energy neutrons. The sophisticated HPGe-BGO -ray spectrometer system can be operated in Compton-suppression and pair-spectrometer modes simultaneously. The octal splitting of the main BGO improves efficient pair mode operation when coincidences between pairs of opposite segments and the HPGe detector are required separately. Gamma-gamma coincidence measurements will also be possible when the new multiparameter data acquisition system is completed. One of the main tasks at the new facility will be the accumulation of new spectroscopic data for detector calibration and standardisation, as well as for the construction of a more accurate prompt -ray library for the chemical elements. Various applications are planned, such as the determination of hydrogen in fullerenes and of toxic trace elements in environmental samples.