Limits...
Investigation of Collimator Influential Parameter on SPECT Image Quality: a Monte Carlo Study.

Banari Bahnamiri Sh - J Biomed Phys Eng (2015)

Bottom Line: Because if image quality is low, the possibility of making a mistake in diagnosing and treating the patient will rise.The results of the experimental measurments and simulation calculations revealed a relative difference of less than 5% leading to the confirmation of the accuracy of conducted simulation MCNP code calculation.This is the first essential step in the design and modelling of new collimators used for creating high quality images in nuclear medicine.

View Article: PubMed Central - PubMed

Affiliation: Assistant Professor of Nuclear Physics, Tabari University of Babol, Iran;

ABSTRACT

Background: Obtaining high quality images in Single Photon Emission Tomography (SPECT) device  is the most important goal in nuclear medicine. Because if image quality is low, the possibility of making a mistake in diagnosing and treating the patient will rise. Studying effective factors in spatial resolution of imaging systems is thus deemed to be vital. One of the most important factors in SPECT imaging in nuclear medicine is the use of an appropriate collimator for a certain radiopharmaceutical feature in order to create the best image as it can be effective in the quantity of Full Width at Half Maximum (FWHM) which is the main parameter  in spatial resolution.

Method: In this research, the simulation of the detector and collimator of SPECT imaging device, Model HD3 made by Philips Co. and the investigation of important factors on the collimator were carried out using MCNP-4c code.

Results: The results of the experimental measurments and simulation calculations revealed a relative difference of less than 5% leading to the confirmation of the accuracy of conducted simulation MCNP code calculation.

Conclusion: This is the first essential step in the design and modelling of new collimators used for creating high quality images in nuclear medicine.

No MeSH data available.


Different Values of FWHM according to Polyethylene Thickness when the Source 140 keV is Located 20 cm apart from Collimator
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4417619&req=5

Figure 4: Different Values of FWHM according to Polyethylene Thickness when the Source 140 keV is Located 20 cm apart from Collimator

Mentions: In order to study the effect of dispersing environment on FWHM value, the distance between the source and the collimator was considered to be 20 cm, and different thicknesses of polyethylene (dispersing environment) were placed between the collimator and the source. Results of calculating and measuring value of FWHM for linear and point sources in each thickness are illustrated in figure 4.


Investigation of Collimator Influential Parameter on SPECT Image Quality: a Monte Carlo Study.

Banari Bahnamiri Sh - J Biomed Phys Eng (2015)

Different Values of FWHM according to Polyethylene Thickness when the Source 140 keV is Located 20 cm apart from Collimator
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4417619&req=5

Figure 4: Different Values of FWHM according to Polyethylene Thickness when the Source 140 keV is Located 20 cm apart from Collimator
Mentions: In order to study the effect of dispersing environment on FWHM value, the distance between the source and the collimator was considered to be 20 cm, and different thicknesses of polyethylene (dispersing environment) were placed between the collimator and the source. Results of calculating and measuring value of FWHM for linear and point sources in each thickness are illustrated in figure 4.

Bottom Line: Because if image quality is low, the possibility of making a mistake in diagnosing and treating the patient will rise.The results of the experimental measurments and simulation calculations revealed a relative difference of less than 5% leading to the confirmation of the accuracy of conducted simulation MCNP code calculation.This is the first essential step in the design and modelling of new collimators used for creating high quality images in nuclear medicine.

View Article: PubMed Central - PubMed

Affiliation: Assistant Professor of Nuclear Physics, Tabari University of Babol, Iran;

ABSTRACT

Background: Obtaining high quality images in Single Photon Emission Tomography (SPECT) device  is the most important goal in nuclear medicine. Because if image quality is low, the possibility of making a mistake in diagnosing and treating the patient will rise. Studying effective factors in spatial resolution of imaging systems is thus deemed to be vital. One of the most important factors in SPECT imaging in nuclear medicine is the use of an appropriate collimator for a certain radiopharmaceutical feature in order to create the best image as it can be effective in the quantity of Full Width at Half Maximum (FWHM) which is the main parameter  in spatial resolution.

Method: In this research, the simulation of the detector and collimator of SPECT imaging device, Model HD3 made by Philips Co. and the investigation of important factors on the collimator were carried out using MCNP-4c code.

Results: The results of the experimental measurments and simulation calculations revealed a relative difference of less than 5% leading to the confirmation of the accuracy of conducted simulation MCNP code calculation.

Conclusion: This is the first essential step in the design and modelling of new collimators used for creating high quality images in nuclear medicine.

No MeSH data available.