Search results for "Radiation"

MULTI-DETECTOR CT STUDIES IN CHILDREN: A COMPARISON OF RADIATION DOSES BETWEEN PAEDIATRIC AND NON-PAEDIATRIC RADIOLOGY UNITS. RESULTS FROM THE FIRST …

2013

RADIATION DOSE FROM MULTIDETECTOR CT EXAMINATIONS IN ADULTS IN ITALY: RESULT OF THE FIRST ITALIAN SURVEY

2013

Efficacy of raw implementation and reduction dose protocols in CT colonoscopy: a single centre 4 years retrospective review

2015

Aims and objectives Methods and materials Results Conclusion Personal information References

Effect of the Parotid Function on the Dental Health after Radiotherapy of the Head and Neck Region

2005

Sonographie bei Skelettmetastasen - Stellenwert im Vergleich zur Computertomographie und konventionellen Röntgendiagnostik

1990

The value of CT, conventional radiography and ultrasound was compared in 40 patients with 52 skeletal metastases. For superficial lesions, the combination of sonography and conventional radiography was equivalent to CT in showing the extent of bone destruction and soft tissue involvement. As expected sonography was unsatisfactory for deeper lesions. Sonography can provide useful information for planning radiation therapy for superficial lesions, but it does not replace conventional radiography.

Therapiemonitoring mittels 2-[18F]-FDG-Positronenemissionstomographie nach neoadjuvanter Strahlenbehandlung des Mundhöhlenkarzinoms

2001

Die Kombination strahlentherapeutischer und chirurgischer Behandlungsschritte beim Mundhohlenkarzinom erfordert eine fruhe, objektive Bewertung des Bestrahlungserfolgs. Schlechtes radiotherapeutisches Ansprechverhalten verlangt die moglichst umgehende chirurgische Sanierung auch bei hohem Operations- und Narkoserisiko. Eine deutliche Remission unter Strahlentherapie kann dagegen die Fortsetzung der Bestrahlungsbehandlung begrunden. Die vorliegende Studie untersucht daher die Bewertung des Bestrahlungserfolgs anhand der durch Positronenemissionstomographie (PET) bestimmten Glukosestoffwechselaktivitat.

Direct Measurement of Reoxygenation in Malignant Mammary Tumors after a Single Large Dose of Irradiation

1984

Due to functional and morphological abnormalities of the terminal vascular bed in malignant tumors, a severe restriction of convective transport occurs even in very early growth stages. This leads to nutritional deprivation of the cancer cells and to unfavourable cellular microenvironments as well. During advanced tumor growth stages, the nutritional deprivation and the milieu conditions get worse because pronounced deterioration of diffusive transport is superimposed on the insufficient blood supply. This transport limitation is mainly caused by increases of intercapillary distances and by decreases of vascular surface areas per unit tissue volume. Moreover, these peculiarities of the tumo…

EP-1129: Radiotherapy for mucosa-associated lymphoid tissue lymphoma of the ocular adnexa

2013

CT and MR Imaging of Lesions of Skull Base and Cranial Vault

1989

The importance of CT in examinations of the skull base, including its role in the planning of operative or radiation therapy, has long been recognized (Liliequist and Forsell 1976; Bradac et al. 1977 a, b; 1978 a, b; Hammerschlag et al. 1977; Caille et al. 1977; Lohkamp et al. 1977; Huk and Schiefer 1978; Becker et al. 1978; Weinstein et al. 1978). In the present chapter we shall review the capabilities and limitations of this modality in the diagnosis of diseases involving the bony skull base and cranial vault. A more detailed discussion of specific tumor types may be found under the appropriate headings elsewhere in the book.

Estimating Terrestrial Neutron-Induced SEB Cross-Sections and FIT Rates for High-Voltage SiC Power MOSFETs

2019

Cross sections and failure in time rates for neutron-induced single-event burnout (SEB) are estimated for SiC power MOSFETs using a method based on combining results from heavy ion SEB experimental data, 3-D TCAD prediction of sensitive volumes, and Monte Carlo radiation transport simulations of secondary particle production. The results agree well with experimental data and are useful in understanding the mechanisms for neutron-induced SEB data.