Load the raw DICOM projections (NM, TOMO or GATED TOMO, uncompressed) of the stress study and of the rest study. An already reconstructed volume (RECON TOMO) is also accepted. Files stay on your device: no data is sent.
Gated digital phantom (8 R-R intervals, 70 bpm) with regional contraction, attenuation, collimator resolution and Poisson noise: 64 projections over 180° (dual head at 90°), 64×64 matrix, 6.6 mm pixels, Tc-99m sestamibi. The RCA territory is akinetic (scar). Use it to try the whole workflow without patient data.
The horizontal line follows the reference row: if the heart shifts relative to the line during the cine, there is vertical motion.
Sinogram: one row per projection at the chosen level; breaks in the sinusoid = lateral motion or a center-of-rotation problem. Linogram: axial profile per projection; horizontal steps = vertical motion.
Drag the image to rotate. The vessels follow a normal right-dominant coronary circulation, fitted to the ventricle geometry.
Contours: endocardium in light blue, epicardium in green, end-diastolic endocardium dashed. The slices are fixed: the ventricle contracts and the base moves toward the apex.
Colored surface: endocardium at the current frame. White mesh: end-diastolic endocardium. Drag to rotate.
The reference thickness is a calibration parameter: the endocardium is placed half a thickness inside the maximum-count surface, and thickness varies with counts (partial volume effect). The default value reproduces the phantom volumes; check it on data from your own system against the clinical software. Motion thresholds for septal segments are reduced by the septal factor.
Score per segment (0–4) from percent uptake relative to the ventricle maximum. A defect is reversible if rest uptake rises by at least the reversibility threshold and returns to normal; partially reversible if it rises without normalizing. Changes update tables, maps and report at once.
Research and development tool, not a certified medical device. The analysis is semiquantitative, with no normal database and no attenuation or scatter correction: compare the results with the reference clinical software.