Jove
Visualize
Contact Us
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

Related Experiment Videos

Highly stable solid-state x-ray detector array.

T Takahashi1, M Nakagawa, M Yoshida

  • 1Central Research Laboratory, Hitachi, Ltd., Tokyo, Japan.

Medical Physics
|September 1, 1992
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

[Clinical analysis of urolithiasis in Poh Ai Hospital of I-Lan, Taiwan, R.O.C.--a comparative study with urolithiasis in Japan].

Hinyokika kiyo. Acta urologica Japonica·1992
Same author

[Clinical application of Dornier Lithotripter Compact for upper urinary tract stones].

Hinyokika kiyo. Acta urologica Japonica·1992
Same author

[Japanese clinical statistical data of patients with polyneuropathy].

Nihon rinsho. Japanese journal of clinical medicine·1992
Same author

Immunogenic properties of structurally modified human tissue plasminogen activators in chimpanzees and mice.

Fundamental and applied toxicology : official journal of the Society of Toxicology·1992
Same author

Papillary adenocarcinoma in a seminal vesicle cyst associated with ipsilateral renal agenesis: a case report.

The Journal of urology·1992
Same author

[Hairy cell leukemia successfully treated with deoxycoformycin].

[Rinsho ketsueki] The Japanese journal of clinical hematology·1992

Temperature fluctuations in x-ray computed tomography (CT) detectors can cause circular artifacts. This study provides formulas to prevent these artifacts, ensuring high-resolution, artifact-free CT imaging.

Area of Science:

  • Medical Imaging Physics
  • Detector Technology
  • Image Quality Assessment

Background:

  • Circular artifacts in x-ray computed tomography (CT) images degrade diagnostic quality.
  • Temperature variations within detector arrays are a known cause of these artifacts.
  • Controlling detector temperature is crucial for maintaining image fidelity.

Purpose of the Study:

  • To analyze the impact of temperature changes on circular artifact generation in CT.
  • To develop formulas for calculating temperature coefficients to ensure artifact-free imaging.
  • To validate the effectiveness of a temperature-controlled detector array.

Main Methods:

  • Detailed analysis of temperature effects (temporal and spatial) on CT image artifacts.
  • Derivation of formulas for maximum offset and gain temperature coefficients.

Related Experiment Videos

  • Design and implementation of a temperature-controlled, insulated solid-state x-ray detector array (Gd2O2S:Pr,Ce,F scintillators with Si pin-photodiodes).

    • Main Results:

    • Formulas were established to determine allowable temperature coefficients based on x-ray energy, detector sensitivity, and image quality parameters (contrast, spatial resolution).
    • The developed temperature-controlled detector array successfully produced high-resolution, artifact-free CT images of a phantom head.
    • The experimental results validated the theoretical calculations for preventing circular artifacts.

    Conclusions:

    • Precise control of detector temperature is essential for artifact-free x-ray computed tomography.
    • The derived formulas provide a quantitative basis for designing stable CT detector systems.
    • The implemented solid-state detector array demonstrates the feasibility of achieving superior image quality through thermal management.