Cardiac SPECT reconstruction
From WikiCover
On June 4, 2007, Digirad introduced nSPEED, an advanced three dimensional SPECT image reconstruction technique. This advanced algorithm provides the clinicians with significant image quality improvement over existing 2D reconstruction techniques by producing clearer and more accurate images to help improve physicians' interpretation confidence.
nSPEED models the depth-dependent point response function in an iterative reconstruction algorithm (OSEM), thus enabling depth-dependent resolution recovery and improving chamber contrast in cardiac SPECT images. Such improvement may further enable the reduction of acquisition time while maintaining image quality as compared to conventional reconstruction without depth-dependent resolution recovery, while adhering to ASNC imaging guidelines. With this product, Digirad is striving to obtain ASNC and other society acceptance in order to meet accreditation requirements.
Preliminary studies of nSPEED have resulted in equivalent diagnostic quality for stress and rest images with reliable function quantitation measurements from gated stress images and reliable quantitation of perfusion defect severity on stress and rest images.