Topics

The Energy Consumption of Radiology: Energy- and Cost-saving Opportunities for CT and MRI Operation.

08:00 EDT 24th March 2020 | BioPortfolio

Summary of "The Energy Consumption of Radiology: Energy- and Cost-saving Opportunities for CT and MRI Operation."

Background Awareness of energy efficiency has been rising in the industrial and residential sectors but only recently in the health care sector. Purpose To measure the energy consumption of modern CT and MRI scanners in a university hospital radiology department and to estimate energy- and cost-saving potential during clinical operation. Materials and Methods Three CT scanners, four MRI scanners, and cooling systems were equipped with kilowatt-hour energy measurement sensors (2-Hz sampling rate). Energy measurements, the scanners' log files, and the radiology information system from the entire year 2015 were analyzed and segmented into scan modes, as follows: net scan (actual imaging), active (room time), idle, and system-on and system-off states (no standby mode was available). Per-examination and peak energy consumption were calculated. Results The aggregated energy consumption imaging 40 276 patients amounted to 614 825 kWh, dedicated cooling systems to 492 624 kWh, representing 44.5% of the combined consumption of 1 107 450 kWh (at a cost of U.S. $199 341). This is equivalent to the usage in a town of 852 people and constituted 4.0% of the total yearly energy consumption at the authors' hospital. Mean consumption per CT examination over 1 year was 1.2 kWh, with a mean energy cost (±standard deviation) of $0.22 ± 0.13. The total energy consumption of one CT scanner for 1 year was 26 226 kWh ($4721 in energy cost). The net consumption per CT examination over 1 year was 3580 kWh, which is comparable to the usage of a two-person household in Switzerland; however, idle state consumption was fourfold that of net consumption (14 289 kWh). Mean MRI consumption over 1 year was 19.9 kWh per examination, with a mean energy cost of $3.57 ± 0.96. The mean consumption for a year in the system-on state was 82 174 kWh per MRI examination and 134 037 kWh for total consumption, for an energy cost of $24 127. Conclusion CT and MRI energy consumption is substantial. Considerable energy- and cost-saving potential is present during nonproductive idle and system-off modes, and this realization could decrease total cost of ownership while increasing energy efficiency. © RSNA, 2020.

Affiliation

Journal Details

This article was published in the following journal.

Name: Radiology
ISSN: 1527-1315
Pages: 192084

Links

DeepDyve research library

PubMed Articles [16083 Associated PubMed Articles listed on BioPortfolio]

Research on the energy-saving control strategy of a belt conveyor with variable belt speed based on the material flow rate.

Aiming at solving the problem of high energy consumption in the rated belt speed operation of a belt conveyor system when the material flow rate is reduced, the power consumption of the frequency conv...

New solutions to reduce greenhouse gas emissions through energy efficiency of buildings of special importance - Hospitals.

Saving energy has an important role in the concerted actions to protect the planet from the effects of global warming, particularly the energy consumed by the existing buildings (with various energy c...

Modernizing our way out or digging ourselves in? Reconsidering the impacts of efficiency innovations and affluence on residential energy consumption, 2005-2015.

This study scrutinizes the impacts of efficiency innovations as well as affluence on residential energy consumption, which is a major driver of greenhouse gas emissions. The study draws on the ecologi...

Assessing the effect of non-financial information intervention on promoting group-level energy savings.

Increasing attention has been paid to information intervention in stimulating household energy conservation. However, for group-level energy users who have no financial motivation to save energy, litt...

Integrated Analysis of the Water-Energy-Environmental Pollutant Nexus in the Petrochemical Industry.

Reducing pollution and the consumption of water and energy are key environmental objectives for the petrochemical industry. Petrochemical production involves complex interdependences between water, en...

Clinical Trials [8465 Associated Clinical Trials listed on BioPortfolio]

The Effect of Snack Consumption on Energy Intake in Preschoolers

The purpose of this pilot study will be to examine the influence of providing snacks on consumption of overall energy intake in children aged 2-5 years in the Early Learning Center (ELC) a...

Study on Energy Cost Prediction of Cycle Ergometer

This study purpose is (1) to develop the new energy expenditure equation; (2) to increase accuracy of energy cost prediction of cycle ergometer; (3) to find out some dependent factors.

The Lunch Study: the Combined Effects of Food Texture and Energy Density on Intake

Meal size is strongly influenced by a number of external features of the food environment which can promote over-consumption, such as the availability of palatable energy dense foods. The ...

Energy Availability in Male and Female Elite Wheelchair Athletes Over Seven Consecutive Training Days

Low energy availability (LEA) is a major problem in sports as athletes ingest often a lower amount of energy compared to their actual needs. The availability of energy is calculated based ...

Energy Cost of Posture Maintenance, Ethnic Differences and the Influence of Metabolic State

The purpose of this study is to determine the magnitude of changes in energy expenditure and respiratory quotient (RQ) during sitting and standing in Asian men.

Medical and Biotech [MESH] Definitions

Electric power supply devices which convert biological energy, such as chemical energy of metabolism or mechanical energy of periodic movements, into electrical energy.

The transfer of energy of a given form among different scales of motion. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). It includes the transfer of kinetic energy and the transfer of chemical energy. The transfer of chemical energy from one molecule to another depends on proximity of molecules so it is often used as in techniques to measure distance such as the use of FORSTER RESONANCE ENERGY TRANSFER.

An imbalanced nutritional status resulted from excessive intake of nutrients. Generally, overnutrition generates an energy imbalance between food consumption and energy expenditure leading to disorders such as OBESITY.

A technique for analysis of the chemical composition of molecules. A substance is bombarded with monochromatic ELECTRONS. Some of the electrons passing through the specimen will lose energy when they ionize inner shell electrons of the atoms in the specimen. The energy loss is element dependent. Analysis of the energy loss spectrum reveals the elemental composition of a specimen. ENERGY-FILTERED TRANSMISSION ELECTRON MICROSCOPY is a type of electron energy loss spectroscopy carried out in electron microscopes specially outfitted to analyze the spectrum of electron energy loss.

Thermal energy contained in the earth. It can be used directly to supply heat or converted to mechanical or electrical energy. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

Quick Search


DeepDyve research library

Relevant Topic

Radiology
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...


Searches Linking to this Article