Transverse Image Reconstruction in Tl-201 Myocardial Scans

A commercially available tomographic imaging system has been interfaced to a digital computer in our laboratory. This enables the computer to collect list-mode data which can be reconstructed by backprojection to yield longitudinal and transverse digital tomographic planes. A phantom was scanned and both longitudinal and transverse digital images are shown. A patient study using the myocardial imaging agent Tl-201 was performed, yielding both longitudinal and transverse images of the heart. The problems associated with transverse reconstruction by backprojection are discussed.