Results 21 to 30 of about 5,827,231 (253)

Validation of a Locally Designed Computed Tomography Dose Phantom: A Comparison Study with a Standard Acrylic Phantom in South-South, Nigeria

Journal of Global Radiology, 2021
Purpose: The aim of this study was to determine the mean volume computed tomography dose index (CTDIvol) for the standard head and body phantoms and locally designed head and body phantoms respectively.
Anwuli Christiana Tobi, Chukwuka Emmanuel Mokobia, Joyce Ekeme Ikubor, Akintayo Daniel Omojola   +3 more
doaj   +1 more source

Comparison of Radiation Doses of Computed Tomography Brain and Pulmonary Angiography with International Commission on Radiological Protection Guidelines: A Descriptive Study [PDF]

Journal of Clinical and Diagnostic Research
Introduction: Computed Tomography Angiography (CTA) is useful for evaluating and diagnosing conditions related to blood vessels, such as aneurysms, stenosis (narrowing of vessels), vascular malformations, and blockages.
AF Fidha, George Arattu Alphy, Dabholkar Digambar Amita   +2 more
doaj   +1 more source

Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria

Journal of Radiation and Cancer Research, 2021
Context: Diagnostic reference level (DRL) is the first step in the optimization process to manage patient dose corresponding with the medical purpose. Aim: The objective of this study was to develop local DRL for computed tomography (CT) of the head and ...
Anwuli Christiana Tobi, Chukwuka Emmanuel Mokobia, Joyce Ekeme Ikubor, Akintayo Daniel Omojola, Maryann Etim Ekpo, Anita Franklin Akpolile   +5 more
doaj   +1 more source

Length-dependent anisotropic scaling of spindle shape [PDF]

, 2014
Spindle length varies dramatically across species and during early development to segregate chromosomes optimally. Both intrinsic factors, such as regulatory molecules, and extrinsic factors, such as cytoplasmic volume, determine spindle length scaling ...
Sébastien Besson, Sarah Young, Welburn, Julie P I, Julie P. I. Welburn, Young, Sarah, Besson, Sébastien   +5 more
core   +1 more source

PERBANDINGAN VARIASI REDUCE DOSE DAN ITERATIVE RECONSTRUCTION (IR) DALAM MENENTUKAN MINIMALISASI DOSE LENGTH PRODUCT (DLP) DAN IMAGE NOISE CT SCAN KEPALA [PDF]

, 2018
Background: Minimalization of Dose Length Product (DLP) and image noise can be obtained from the use of appropriate methods with the examination done. One method to minimize the radiation dose is Reduce Dose.
ULIL ALIIFAH PUTRI, 15161383046
core   +1 more source

Patient Dose Estimation Using CT-Expo Software at Two Hospitals in North-Central Nigeria

Southern Clinics of Istanbul Eurasia, 2018
INTRODUCTION[|]Simulation software has aided the estimation of organ dose from computed tomography (CT) examinations. The aim of this study was to use the CT-Expo (SASCRAD, Fritz-Reuter-Weg, Buchholz, Germany) software to determine volume CT dose index ...
Mary-ann Etim Ekpo, Rachel Ibhade Obed, Akintayo Daniel Omojola   +2 more
doaj   +1 more source

Establishment of local diagnostic reference levels for common adult CT examinations: a multicenter survey in Addis Ababa

BMC Medical Imaging, 2023
Background In medical imaging, a computed tomography (CT) scanner is a major source of ionizing radiation. All medical radiation exposures should be justified and optimized to meet the clinical diagnosis.
Marema Jebessa Kumsa, Teklehaimanot Mezgebe Nguse, Haleluya Biredaw Ambessa, Tesfaye Tefera Gele, Wondemu Geteye Fantaye, Seife Teferi Dellie   +5 more
doaj   +1 more source

Balance Problems for Integer Circuits [PDF]

, 2018
We investigate the computational complexity of balance problems for {-,*}-circuits computing finite sets of natural numbers. These problems naturally build on problems for integer expressions and integer circuits studied by Stockmeyer and Meyer (1973 ...
Dose, Titus, Titus Dose
core   +1 more source

Redefining Radiation Metrics: Evaluating Actual Doses in Computed Tomography Scans

Biomedicines
Background: Computed tomography (CT) contributes significantly to the collective dose from medical sources, raising concerns about potential health risks.
Dominika Sabiniewicz-Ziajka, Arkadiusz Szarmach, Małgorzata Grzywińska, Paweł Gać, Maciej Piskunowicz   +4 more
doaj   +1 more source

Dose calculations for [¹³¹I] meta-iodobenzylguanidine-induced bystander effects

, 2014
Targeted radiotherapy is a potentially useful treatment for some cancers and may be potentiated by bystander effects. However, without estimation of absorbed dose, it is difficult to compare the effects with conventional external radiation treatment ...
R. J. Mairs, Seymour, C B, M. D. Gow, Mairs, R J, C. B. Seymour, Gow, M.D., Mothersill, C.E., Seymour, C.B., C. E. Mothersill, Mairs, R.J., M. Boyd, W. V. Prestiwch, Mothersill, C E, Prestiwch, W V, Prestiwch, W.V., Boyd, Marie, Boyd, M., Gow, M D   +17 more
core   +1 more source