Pencil beam kernel-based dose calculations on CT data for a mixed neutron-gamma fission field applying tissue correction factors.

For fast neutron therapy with mixed neutron and gamma radiation at the fission neutron therapy facility MEDAPP at the research reactor FRM II in Garching, no clinical dose calculation software was available in the past. Here, we present a customized solution for research purposes to overcome this lack of three-dimensional dose calculation.The applied dose calculation method is based on two sets of decomposed pencil beam kernels for neutron and gamma radiation.

Identification and quantification of anomalies in environmental gamma dose rate time series using artificial intelligence.

Gamma dose rate (GDR) monitors are the most widely used tool for continuous monitoring of environmental radioactivity. They are inexpensive to procure and operate, and generally require little maintenance. However, since no spectral information is available, the detection limit for irregularities is correspondingly high; A value around 20 nSv/h is often called out.

Evaluation of neutron sources for ISAGE-in-situ-NAA for a future lunar mission.

For a future Moon landing, a concept for an in-situ NAA involving age determination using the (40)Ar-(39)Ar method is developed. A neutron source (252)Cf is chosen for sample irradiation on the Moon. A special sample-in-source irradiation geometry is designed to provide a homogeneous distribution of neutron flux at the irradiation position.

The Munich Fission Neutron Therapy Facility MEDAPP at the research reactor FRM II.

Purpose: At the new research reactor FRM II of the Technical University of Munich (TUM), the facility for Medical Applications (MEDAPP) was installed where fast neutrons are available as a beam for medical use.

Material And Methods: Thermal neutrons induce fission in a pair of uranium converter plates and generate fast neutrons which are guided to the patient by a beam tube. The maximum opening of the multi leaf collimator (MLC) is 30x20 cm2 WxH.

An exploratory workplace study to investigate the perceived value of continuous low-level heatwrap therapy in manual workers.

Background: Between 60 and 80% of the population in industrialized countries experience low back pain at some time in their lives. The physical demands of work, i.e.

EFFECTS OF ETHAMIVAN IN PATIENTS WITH CHRONIC RESPIRATORY DISEASE.

Nineteen patients suffering from chronic respiratory disease were evaluated before, during and after ethamivan administration by serial measurement of arterial pH, pCO(2), plasma ethamivan levels and alveolar ventilation. Ethamivan was administered intravenously as a single injection of 50 mg. in five patients; as an injection of 25 mg.