User profiles for U. Udayasankar
Unni UdayasankarProfessor of Medical Imaging, University of Arizona Verified email at radiology.arizona.edu Cited by 1193 |
[HTML][HTML] Safety challenges related to the use of sedation and general anesthesia in pediatric patients undergoing magnetic resonance imaging examinations
The use of sedation and general anesthesia has facilitated the significant growth of MRI use
among children over the last years. While sedation and general anesthesia are considered …
among children over the last years. While sedation and general anesthesia are considered …
Automatic patient centering for MDCT: effect on radiation dose
J Li, UK Udayasankar, TL Toth… - American journal of …, 2007 - Am Roentgen Ray Soc
OBJECTIVE. The purpose of this study was to determine with phantom and patient imaging
the effect of an automatic patient-centering technique on the radiation dose associated with …
the effect of an automatic patient-centering technique on the radiation dose associated with …
A review of extraaxial developmental venous anomalies of the brain involving dural venous flow or sinuses: persistent embryonic sinuses, sinus pericranii, venous …
…, T Bazil, M Thomas, S Mani, M Kay, U Udayasankar - Neurosurgical …, 2018 - thejns.org
This paper is a narrative review of extraaxial developmental venous anomalies (eDVAs) of
the brain involving dural venous flow or sinuses: persistent embryonic sinuses, sinus …
the brain involving dural venous flow or sinuses: persistent embryonic sinuses, sinus …
Low-dose nonenhanced head CT protocol for follow-up evaluation of children with ventriculoperitoneal shunt: reduction of radiation and effect on image quality
UK Udayasankar, K Braithwaite… - American Journal …, 2008 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Children with a shunt for hydrocephalus often undergo
multiple follow-up head CT scans, increasing the risk for long-term effects of ionizing radiation. …
multiple follow-up head CT scans, increasing the risk for long-term effects of ionizing radiation. …
Magnetic resonance imaging quality control, quality assurance and quality improvement
Quality in MR imaging is a comprehensive process that encompasses scanner performance,
clinical processes for efficient scanning and reporting, as well as data-driven improvement …
clinical processes for efficient scanning and reporting, as well as data-driven improvement …
Jugular bulb and skull base pathologies: proposal for a novel classification system for jugular bulb positions and microsurgical implications
S Manjila, T Bazil, M Kay, UK Udayasankar… - Neurosurgical …, 2018 - thejns.org
OBJECTIVE There is no definitive or consensus classification system for the jugular bulb
position that can be uniformly communicated between a radiologist, neurootologist, and …
position that can be uniformly communicated between a radiologist, neurootologist, and …
First-line diagnostic evaluation with MRI of children suspected of having acute appendicitis
Background Advances in abdominal MRI have enabled rapid, free-breathing imaging without
the need for intravenous or oral contrast material. The use of MRI as the primary imaging …
the need for intravenous or oral contrast material. The use of MRI as the primary imaging …
Role of spectral presaturation attenuated inversion‐recovery fat‐suppressed T2‐weighted MR imaging in active inflammatory bowel disease
UK Udayasankar, D Martin… - Journal of Magnetic …, 2008 - Wiley Online Library
Purpose To retrospectively evaluate the efficacy of spectral presaturation attenuated
inversion‐recovery (SPAIR) fat‐suppressed (FS) partial Fourier single shot (SSH) T2‐weighted (…
inversion‐recovery (SPAIR) fat‐suppressed (FS) partial Fourier single shot (SSH) T2‐weighted (…
ACR appropriateness criteria® head trauma-child
…, RL Robertson, BP Soares, UK Udayasankar… - Journal of the American …, 2020 - Elsevier
Head trauma is a frequent indication for cranial imaging in children. The majority of
accidental pediatric head trauma is minor and sustained without intracranial injury. Well-validated …
accidental pediatric head trauma is minor and sustained without intracranial injury. Well-validated …
Kinetics of natural oxidant demand by permanganate in aquifer solids
MA Urynowicz, B Balu, U Udayasankar - Journal of contaminant hydrology, 2008 - Elsevier
During in situ chemical oxidation with permanganate, natural organic matter and other reduced
species in the subsurface compete with the target compounds for the available oxidant …
species in the subsurface compete with the target compounds for the available oxidant …