http://aran.library.nuigalway.ie/:80 The ARAN digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2017-10-29T22:00:53Z http://hdl.handle.net/10379/6946 The Long War: CENTCOM, grand strategy, and global security Morrissey, John [No abstract available] 2017-06-15T00:00:00Z http://hdl.handle.net/10379/6945 Negotiating colonialism: Gaelic reaction to English expansion in early modern Ireland, c.1541–1641 Morrissey, John [No abstract available] 2003-01-01T00:00:00Z http://hdl.handle.net/10379/6943 Experimental and numerical assessment of MRI-induced temperature change and SAR distributions in phantoms Colgan, Niall; Van der Putten, Wil; Tuohy, Brendan Eskola, H., Väisänen, O., Viik, J., Hyttinen, J. During an MR procedure, most of the transmitted RF power is transformed into heat within the patient’s tissue and implants as a result of resistive losses which is referred to as the specific energy absorption rate (SAR) (1). The European committee for electrotechnical standardisation (CENELEC) has mandated that all scanners must measure the specific absorption rate of radiofrequency in patients and develop system safeguards to ensure that the limits set out IEC 60602-3-33 are not exceeded. Accurate estimation of SAR is critical to safeguard in unconscious/sedated patients, patients with compromised thermoregulation, implant patients, pregnant patients and neonates who require an MRI procedure. The increased static field strength and RF duty cycle capabilities in modern MRI scanners means that systems can easily exceed safe SAR levels for patients (2). Advisory protocols routine used to establish QA protocols do not have advise on the testing of SAR levels in MRI and this is not routinely measured in annual medical physics QA. There is increasing need to verify the manufacturers SAR estimations. 2017-06-01T00:00:00Z http://hdl.handle.net/10379/6942 Humanity’s legacies: historical geographies in the present Morrissey, John [No abstract available] 2014-01-01T00:00:00Z