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dose reference level mammogram

Michael S Irwig
PURPOSE OF REVIEW: To explore the medical and surgical clinical dilemmas in the management of trans (transgender) men, a growing population receiving more attention than in the past. RECENT FINDINGS: Testosterone therapy is commonly prescribed to trans men for masculinization. Nonetheless, the optimal formulations and doses of testosterone therapy for trans men have not been well established. Testosterone therapy has been associated with increased levels of hemoglobin and triglycerides, as well as diabetes...
June 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
Moayyad E Suleiman, Mark F McEntee, Lucy Cartwright, Jennifer Diffey, Patrick C Brennan
INTRODUCTION: This work aims to explore radiation doses delivered in screening mammography in Australia, with a focus on whether compressed breast thickness should be used as a guide when determining patient derived diagnostic reference levels (DRLs). METHODS: Anonymized mammograms (52,405) were retrieved from a central database, and DICOM headers were extracted using third party software. Women with breast implants, breast thicknesses outside 20-110 mm and images with incomplete exposure or quality assurance (QA) data were excluded...
February 2017: Journal of Medical Imaging and Radiation Oncology
S Heywang-Koebrunner, K Bock, W Heindel, G Hecht, L Regitz-Jedermann, A Hacker, V Kaeaeb-Sanyal
Introduction: Since 2008 the German Mammography Screening Programme has been available throughout Germany to all women aged between 50 and 69. The programme strictly follows the European Guidelines. There are controversial discussions in the media as well as in the specialised press. Materials and Methods: Overview of the available data with regard to an evaluation of randomised studies and with regard to quality-assured screening programmes in accordance with EU Guidelines (including data from 18 screening countries)...
October 2013: Geburtshilfe und Frauenheilkunde
Kanchan P Adhikari, L N Jha, Montenegro P Galan
Nepal has a long history of medical radiology since1923 but unfortunately, we still do not have any Radiation Protection Infrastructure to control the use of ionizing radiations in the various fields. The objective of this study was an assessment of the radiation protection in medical uses of ionizing radiation. Twenty-eight hospitals with diagnostic radiology facility were chosen for this study according to patient loads, equipment and working staffs. Radiation surveys were also done at five different radiotherapy centers...
October 2012: Journal of Medical Physics
John A Shepherd, Lionel Herve, Jessie Landau, Bo Fan, Karla Kerlikowske, Steve R Cummings
We compare mammography breast density (BD(MD)) to the measure of breast composition using a clinical dual energy absorptiometry (DXA) system (BD(DXA)) calibrated to measure breast density. A DXA scanning protocol was developed to scan breasts isolated in the DXA scan field in either a prone pendulous or decubitus mediolateral position. A total of 17 participants were recruited among women undergoing clinical mammography examinations. Each participant had duplicate DXA scans and duplicate craniocaudal-view mammograms of their right breast with repositioning between each scan and one DXA and one craniocaudal-view mammogram of their left breast...
May 2006: Medical Physics
K C Young, A Burch, J M Oduko
The mean glandular doses (MGD) to samples of women attending for mammographic screening are measured routinely at screening centres in the UK Breast Screening Programme (NHSBSP). This paper reviews a large representative sample of dose measurements collected during screening in the NHSBSP in 2001 and 2002 for 53 218 films, using 290 X-ray sets, for 16 505 women. The average MGD was 2.23 mGy per oblique film and 1.96 mGy per craniocaudal film; similar to those found previously in the NHSBSP for the years 1997 and 1998...
March 2005: British Journal of Radiology
L Stanton, J L Day, T Villafana, C H Miller, D A Lightfoot
The values of dose and signal-to-noise ratio (SNR) for many techniques and breast thicknesses were computed and compared with a reference technique and breast thickness to provide a valid basis upon which to select a screening technique for screen-film mammography. The reference consisted of a Min-R/OM1 combination (or its equivalent) exposed through a 4.5-cm thick breast via 28 kV and a molybdenum target-beryllium window tube with a 0.03-mm Mo filter. Radiographs of an improved breast phantom were used to relate computed relative SNR values of techniques to diameters of the smallest calcific and soft-tissue objects demonstrated in mammograms...
May 1987: Radiology
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