Ó Breasail, Mícheál Janha, Ramatoulie Zengin, Ayse Pearse, Camille Jarjou, Landing Prentice, Ann Ward, Kate A.
Published in
Calcified Tissue International
Between-scanner differences in measures of bone and body composition can obscure or exaggerate physiological differences in multi-site studies or the magnitude of changes in longitudinal studies. We conducted a cross-calibration study at two bone imaging centres in The Gambia, West Africa where DXA (dual-energy X-ray absorptiometry) and pQCT (perip...
Ó Breasail, Mícheál Janha, Ramatoulie Zengin, Ayse Pearse, Camille Jarjou, Landing Prentice, Ann Ward, Kate A
Between-scanner differences in measures of bone and body composition can obscure or exaggerate physiological differences in multi-site studies or the magnitude of changes in longitudinal studies. We conducted a cross-calibration study at two bone imaging centres in The Gambia, West Africa where DXA (dual-energy X-ray absorptiometry) and pQCT (perip...
Ó Breasail, Mícheál Janha, Ramatoulie Zengin, Ayse Pearse, Camille Jarjou, Landing Prentice, Ann Ward, Kate A
Acknowledgements: The authors wish to acknowledge the contribution of the participants who took part in this study. We thank the men and women of Kiang West and the Kombos, The Gambia, who patiently participated in the study. We acknowledge the enthusiastic work of the study team, especially the research and bone imaging staff, who tirelessly colle...
Maïmoun, Laurent Mahadea, Krishna Kunal Boudousq, Vincent Mura, Thibault Mariano-Goulart, Denis
Purpose: The first objective of the study was to assess the agreement between the Stratos DR (DMS) and the GE Prodigy (GE) DXAs in determining femoral neck, total hip and lumbar spine aBMD. The second objective was to assess the potential impact of leg positioning (hip flexed at 90° or not) on lumbar spine aBMD.Methods: Forty-six individuals (n=42 ...
Sutter, Thibault Duboeuf, François Chapurlat, Roland Cortet, Bernard Lespessailles, Eric Roux, Jean-Paul
Published in
Bone
Dual X-ray absorptiometry body composition measurements are widely used for clinical and research settings. It is well known that measurements vary across instruments, needing caution for longitudinal monitoring or multicentric studies. This study was to quantify intra- and inter-center variability of bone mineral content, bone mineral density, fat...
Rudnev, Sergey Burns, Jane S Williams, Paige L Lee, Mary M Korrick, Susan A Denisova, Tatiana Dikov, Yuri Kozupitsa, Gennady Hauser, Russ Sergeyev, Oleg
...
Published in
Clinical nutrition ESPEN
Body mass index is a simple anthropometric measure (kg/m2) used as an indirect estimate of body fat in individuals, and in assessments of population health and comparisons between populations. Bioelectrical impedance analysis (BIA) is often used to provide additional information on body fat and fat-free mass, and has been used to generate body comp...
Keller, Sune H. Jakoby, Björn Svalling, Susanne Kjaer, Andreas Højgaard, Liselotte Klausen, Thomas L.
Published in
EJNMMI Physics
BackgroundWe present a quick and easy method to perform quantitatively accurate PET scans of typical water-filled PET plastic shell phantoms on the Siemens Biograph mMR PET/MR system.We perform regular cross-calibrations (Xcal) of our PET systems, including the PET/MR, using a Siemens mCT water phantom.Long-term stabilityThe mMR calibration stabili...
Krueger, Diane Libber, Jessie Sanfilippo, Jennifer Yu, Hui Jing Horvath, Blaine Miller, Colin G Binkley, Neil
Published in
Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry
New densitometer installation requires cross-calibration for accurate longitudinal assessment. When replacing a unit with the same model, the International Society for Clinical Densitometry recommends cross-calibrating by scanning phantoms 10 times on each instrument and states that spine bone mineral density (BMD) should be within 1%, whereas tota...
Kist, Jakob W de Keizer, Bart Stokkel, Marcel PM Hoekstra, Otto S Vogel, Wouter V
Published in
BMC Cancer
BackgroundAfter initial treatment of differentiated thyroid carcinoma (DTC) patients are followed with thyroglobulin (Tg) measurements to detect recurrences. In case of elevated levels of Tg and negative neck ultrasonography, patients are treated 'blindly' with Iodine-131 (131I). However, in up to 50% of patients, the post-therapy scan reveals no 1...
Quan, Wenting
Published in
Journal of the Indian Society of Remote Sensing
To understand the absolute radiometric calibration accuracy of the HJ-A CCD-1 sensors, image from these sensors were compared to nearly simultaneously image from Landsat-7 ETM+ sensors. Although the HJ-A CCD-1 sensor has almost the same wavelength of each central band and band width as Landsat-7 ETM+ sensor, there is slightly difference in spectral...
