4116 Introduction: A new multi-focal SMARTZoom class collimator with a suitable high
resolution and extended magnification volume (SZHRX) is applied to cardiology and …

T5 Introduction: While brain perfusion single-photon emission computed tomography
(SPECT) imaging has been widely used to measure regional cerebral perfusion and is …

Objective The aim of this study was to compare brain perfusion SPECT obtained from a 360°
CZT and a conventional Anger camera. Methods The 360° CZT camera utilizing a brain …

Because attenuation gradually decreases reconstructed counts from the periphery to the
center portion of the object, the deep region far from the detector is not clearly observed if …

The choice of a collimator and the selection of a filter can affect the quality of clinical SPECT
images of the brain. The compromises that 4 different collimators make between spatial …

We assessed improvements in performance in detection and estimation tasks due to a novel
brain single photon computed tomography collimator. Data were acquired on the scanner …

This study investigated the method to adjust acquisition time (a) and injection dose (i) to
make the best basal and subtraction images in consecutive SPECT. Image quality was …

The count per pixel in brain perfusion SPECT images depends on the administered dose,
acquisition time, and patient condition and sometimes become low in daily clinical studies …

Objective: The radioactivity count distribution in the brain must be determined accurately to
accurately measure cerebral blood flow (CBF). Scatter and attenuation are factors that …

Purpose An image-based scatter correction (IBSC) method was developed to convert scatter-
uncorrected into scatter-corrected SPECT images. The purpose of this study was to validate …