Abstract

2392
Objectives
Accurate system calibration (SC) is important for the performance of a CZT detector based SPECT system. Our goal was to develop a SC method for a ring-type SPECT system composed of 95 MR-compatible CZT detector modules for small animal SPECT-MR imaging.
Methods
The detector pixel uniformity was measured using a custom-made annular shell phantom with uniform shell thickness that fits tightly inside the ring SPECT system without the collimator. The phantom was filled with 15 µCi of Tc-99m solution and listmode data were acquired from the system. From the data, a 10% energy window was centered around the Tc-99m photopeak for each pixel and each window’s position on its pixel’s pulse height spectrum was stored for processing experimental data. The uniform flood image obtained with the energy calibrated data was used for uniformity correction of the detector. Pixels in the …

Metadata

publication

Journal of Nuclear Medicine 53 (supplement 1), 2392-2392, 2012

year

2012

publication date

2012/5/1

authors

Andrew Rittenbach, Jingyan Xu, AbdEl-Monem El-Sharkawy, William Edelstein, A Liu, Kevin Parnham, James Hugg, Benjamin Tsui

link

https://jnm.snmjournals.org/content/53/supplement_1/2392.short

source

Journal of Nuclear Medicine

volume

53

issue

supplement 1

pages

2392-2392

publisher

Society of Nuclear Medicine