INVESTIGATION OF THE SPATIAL RESOLUTION AND FIELD OF VIEW WITH CHANGE OF MAGNIFICATION IN VRX CT

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ARABI HOSSEIN; KAMALI ASL ALIREZA; AGHAMIRI SEYED MAHMOOD REZA

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MEDICAL PHYSICS Year:2010 | Volume:7 | Issue:3 (28) Page(s): 35-45

Download Full-Text

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

View:

3,067

Download:

Cites:

Information Journal Paper

Title

INVESTIGATION OF THE SPATIAL RESOLUTION AND FIELD OF VIEW WITH CHANGE OF MAGNIFICATION IN VRX CT

Author(s)

ARABI HOSSEIN | KAMALI ASL ALIREZA | AGHAMIRI SEYED MAHMOOD REZA | Issue Writer Certificate

Keywords

FIELD OF VIEWQ3

SPATIAL RESOLUTIONQ3

SYSTEM MAGNIFICATIONQ3

VARIABLE RESOLUTION X-RAY (VRX) CTQ3

Abstract

Introduction: Variable resolution x-ray (VRX) CT is a new type of CT that can image objects at various SPATIAL RESOLUTIONs. In a VRX CT scanner, the SPATIAL RESOLUTION increases at the cost of reduction in the FIELD OF VIEW (FOV). An important factor that limits the SPATIAL RESOLUTION of the VRX CT is the effect of focal spot size. Also, the optimum magnification is different at each incident angle.Material and Methods: To investigate the SPATIAL RESOLUTION and the FOV in VRX CT, we used the numerical parameters of an actual VRX CT scanner. The effects of decreasing the focal spot size and optimizing magnification on the SPATIAL RESOLUTION and the FOV of the system were studied theoretically.Results: The focal spot size was found to greatly limit the SPATIAL RESOLUTION of the VRX CT at the small incident angles. By decreasing the focal spot size, the SPATIAL RESOLUTION was comparatively improved. Optimization of the SYSTEM MAGNIFICATION without decreasing the focal spot size could greatly increase the SPATIAL RESOLUTION of the system. After optimization of magnification, the FOV of the system decreased significantly.Discussion and Conclusion: The SPATIAL RESOLUTION of the system after optimizing the magnification increased from 7.5 to more than 35 cycles/mm and also the effect of the focal spot no longer limited the SPATIAL RESOLUTION at incident angles smaller than 13o. The disadvantage of optimization of magnification was a great decrease in the FOV of the system. The optimization of magnification has the reverse effect on the SPATIAL RESOLUTION and the FOV of the system so at each incident angle, according to the importance of SPATIAL RESOLUTION or FOV, the SYSTEM MAGNIFICATION can be set to lead to the desirable condition.

Cites

No record.

References

No record.

Cite

APA: Copy

ARABI, HOSSEIN, KAMALI ASL, ALIREZA, & AGHAMIRI, SEYED MAHMOOD REZA. (2010). INVESTIGATION OF THE SPATIAL RESOLUTION AND FIELD OF VIEW WITH CHANGE OF MAGNIFICATION IN VRX CT. IRANIAN JOURNAL OF MEDICAL PHYSICS, 7(3 (28)), 35-45. SID. https://sid.ir/paper/96944/en

Vancouver: Copy

ARABI HOSSEIN, KAMALI ASL ALIREZA, AGHAMIRI SEYED MAHMOOD REZA. INVESTIGATION OF THE SPATIAL RESOLUTION AND FIELD OF VIEW WITH CHANGE OF MAGNIFICATION IN VRX CT. IRANIAN JOURNAL OF MEDICAL PHYSICS[Internet]. 2010;7(3 (28)):35-45. Available from: https://sid.ir/paper/96944/en

IEEE: Copy

HOSSEIN ARABI, ALIREZA KAMALI ASL, and SEYED MAHMOOD REZA AGHAMIRI, “INVESTIGATION OF THE SPATIAL RESOLUTION AND FIELD OF VIEW WITH CHANGE OF MAGNIFICATION IN VRX CT,” IRANIAN JOURNAL OF MEDICAL PHYSICS, vol. 7, no. 3 (28), pp. 35–45, 2010, [Online]. Available: https://sid.ir/paper/96944/en

Related Journal Papers