Effect of Source Activity and Source Volume on Intrinsic Uniformity of SPECT Gamma Camera

Prodhan, Mahidul; Sarah, Sabrina; Huq, Fazlul; Mahmood, Zahid

doi:10.15379/2408-9788.2015.02.02.02

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Four Million counts/image is necessary to negate the stochastic response of the detector in the intrinsic uniformity test [13]. Similarly, a source activity of 70-200 MBq of Tc99m having a volume range of 0.2-0.7ml is required for best IU results [14]. The distance of the source to the detector and the counts per image should be 3m and 16-60M respectively for best IU results.…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of Parameters Affecting Intrinsic Uniformity to Perform Best Optimum Daily QC

Ahmed,

Rehmn,

Mujtaba

2024

J Chem Can Res

View full text Add to dashboard Cite

Nuclear Medicine plays a vital role in the diagnosis of benign and malignant cancer tissues. The quality assurance program of gamma cameras in nuclear medicine provides an artifact-free diagnosis. One of the most important quality control (QC) is to test the response of detectors to a uniform distributed source called as uniformity test. The QC of image uniformity test includes intrinsic uniformity (IU) and Differential uniformity (DU) of CFOV (Central Field of View) and UFOV (Useful Field of View). The purpose of this study is to evaluate the best value of parameters for getting the best uniformity results and set as a benchmark for checking the performance of gamma cameras in the future. It is analyzed that using an energy window placed at 140 KeV at 20%, with a matrix size of 256 x 256, acquiring 60 million counts and the source activity close to 500 µC obtained images are good and both uniformities are within the manufacturer’s requirements, however, increasing the number of acquired counts and by mounting a source at a distance larger than 2m, images become better.

show abstract

Section: Literature Reviewmentioning

confidence: 99%