Jove
Visualize
Contact Us

Related Experiment Videos

Automatic tube-current modulation in CT--a comparison between different solutions.

Jonas Nilsson Althén1

  • 1Department of Radiation Physics, University Hospital, SE-581 85 Linköping, Sweden. jonas.nilsson.althen@lio.se

Radiation Protection Dosimetry
|June 4, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Image quality in CT thorax: effect of altering reconstruction algorithm and tube load.

Radiation protection dosimetry·2024
Same author

Assessment of image quality in abdominal computed tomography: Effect of model-based iterative reconstruction, multi-planar reconstruction and slice thickness on potential dose reduction.

European journal of radiology·2019
Same author

Image quality and pathology assessment in CT Urography: when is the low-dose series sufficient?

BMC medical imaging·2019
Same author

Assessment of image quality in abdominal CT: potential dose reduction with model-based iterative reconstruction.

European radiology·2018
Same author

IMPLICATIONS OF PATIENT CENTRING ON ORGAN DOSE IN COMPUTED TOMOGRAPHY.

Radiation protection dosimetry·2016
Same author

Efficient quality assurance programs in radiology and nuclear medicine in Ostergotland, Sweden.

Radiation protection dosimetry·2010
Same journal

The establishment and implementation of Indonesian diagnostic reference levels: a national framework for optimizing medical radiation exposure.

Radiation protection dosimetry·2026
Same journal

LIST OF REVIEWERS FOR 2025.

Radiation protection dosimetry·2026
Same journal

Development of CaSO4: Dy-based ring badge for extremity dose monitoring of radiation workers in India.

Radiation protection dosimetry·2026
Same journal

A proposal for a differentiated radiation protection program for the decommissioning of nuclear power plants compared to the operation of nuclear power plants.

Radiation protection dosimetry·2026
Same journal

A three-dimensional neutron localization method based on double-scattering imaging and reconstruction algorithm.

Radiation protection dosimetry·2026
Same journal

Effect of 131I biodistribution on measurements using a scanning whole-body counter.

Radiation protection dosimetry·2026
See all related articles
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Siemens Care Dose and GE Medical Systems Auto mA tube-current modulation techniques were compared. Care Dose reduced dose by 15% with negligible artifacts, while Auto mA offered variable dose but persistent artifacts.

Area of Science:

  • Medical Imaging
  • Radiological Physics

Background:

  • Tube-current modulation (TCM) is crucial for optimizing radiation dose in computed tomography (CT).
  • Different TCM systems employ distinct strategies for dose reduction and image quality maintenance.

Purpose of the Study:

  • To evaluate and compare the performance of two TCM systems: Siemens Care Dose (xy-plane modulation) and GE Medical Systems Auto mA (z-direction modulation).
  • To assess the impact of these systems on absorbed dose and image quality.

Main Methods:

  • Siemens Care Dose was evaluated using an elliptical Polymethylmethacrylate phantom and a CTDI-ion chamber for xy-plane modulation.
  • GE Medical Systems Auto mA was investigated using an anthropomorphic dosimetry phantom (Atom) for z-direction modulation.
  • Tests compared outcomes with and without TCM, focusing on absorbed dose and image quality metrics.

Related Experiment Videos

Main Results:

  • Care Dose achieved 15% dose savings in the anthropomorphic phantom with negligible photon starvation artifacts.
  • Auto mA's absorbed dose was dependent on the selected noise level, resulting in more constant image noise but persistent photon starvation artifacts.

Conclusions:

  • The two TCM techniques exhibit distinct dose reduction benefits and image quality trade-offs.
  • Care Dose appears more effective in artifact reduction compared to Auto mA.