ART3H reconstruction of 7-pinhole tomographic myocardial perfusion imaging in the evaluation of coronary angioplasty

Seven-pinhole tomography is considered a rather complicated imaging technique for getting three-dimensional morphological information of the myocardium. The authors overcame the technical shortcomings of past systems by optimizing the reconstruction software and parameters. ART3, a fast version of the ART (algebraic reconstruction technique) algorithm, can cope with data which are corrupted with a high level of noise and uses comparatively little computer storage space. ART3 was extended with a recently developed postreconstruction operator called Fizevo (find zero voxels) to obtain a modified algorithm was named ART3H. Fizevo can be considered as a shadow elimination technique. The modified system was evaluated for a group of 61 patients which underwent an elective coronary angioplasty. A diagnostic accuracy of 81% was achieved. This modified version of seven pinhole tomoscintigraphy appears to be equivalent to other tomographic methods.<<ETX>>

[1]  Y. Yonekura,et al.  Clinical evaluation of thallium-201 emission myocardial tomography using a rotating gamma camera: comparison with seven-pinhole tomography. , 1981, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[2]  W. Rogers,et al.  Thallium-201 myocardial scintigraphy: a critical comparison of seven-pinhole tomography and conventional planar imaging. , 1981, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[3]  J. Ritchie,et al.  Seven-pinhole emission tomography with thallium-201 in patients with prior myocardial infarction. , 1981, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[4]  D L Kirch,et al.  Thallium-201 myocardial perfusion scintigraphy: results of standard and multi-pinhole tomographic techniques. , 1979, The American journal of cardiology.

[5]  J. Ritchie,et al.  Noninvasive assessment of coronary stenoses by myocardial imaging during pharmacologic coronary vasodilatation. III. Clinical trial. , 1978, The American journal of cardiology.

[6]  R. P. Spencer,et al.  Iodine heterocycles: [125I] and [131I] ortho-iodosophenylphosphoric acid. , 1978, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[7]  Gabor T. Herman,et al.  A relaxation method for reconstructing objects from noisy X-rays , 1975, Math. Program..

[8]  P. Gilbert Iterative methods for the three-dimensional reconstruction of an object from projections. , 1972, Journal of theoretical biology.

[9]  Max A. Viergever,et al.  Improved Tomographic Reconstruction in Seven-Pinhole Imaging , 1985, IEEE Transactions on Medical Imaging.

[10]  D L Kirch,et al.  Seven-pinhole tomography--a technical description. , 1981, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.