Literature DB >> 6978253

Effect of correction function on image characteristics of Positologica: a positron CT device for the head.

M Endo, T A Iinuma, E Tanaka, Y Tateno.   

Abstract

The effects of correction function on image characteristics were studied experimentally for a positron CT device Positologica. Correction functions were obtained by smoothing the Shepp and Logan function by convolution of Gaussian functions. Signal-to-noise ratio (SNR) and spatial resolution were measured for phantoms and related to the magnitude of smoothing. The relation between SNR and spatial resolution is also discussed. Some suggestions are made to indicate how to select correction functions for clinical images. A flow of data processing for Positologica is described together with an outline of its hardware.

Mesh：

Year:  1982        PMID： 6978253     DOI： 10.1007/BF00256401

Source DB:  PubMed          Journal:  Eur J Nucl Med        ISSN： 0340-6997


  5 in total

1.  A positron-emission transaxial tomograph for nuclear imaging (PETT).

Authors:  M M Ter-Pogossian; M E Phelps; E J Hoffman; N A Mullani
Journal:  Radiology       Date:  1975-01       Impact factor: 11.105

2.  Correction functions for optimizing the reconstructed image in transverse section scan.

Authors:  E Tanaka; T A Iinuma
Journal:  Phys Med Biol       Date:  1975-09       Impact factor: 3.609

Review 3.  Principles of computer assisted tomography (CAT) in radiographic and radioisotopic imaging.

Authors:  R A Brooks; G Di Chiro
Journal:  Phys Med Biol       Date:  1976-09       Impact factor: 3.609

4.  Detector arrangement and sampling characteristics in rotary positron-emission computed tomography.

Authors:  M Yamamoto
Journal:  Phys Med Biol       Date:  1981-05       Impact factor: 3.609

5.  ECAT: a new computerized tomographic imaging system for positron-emitting radiopharmaceuticals.

Authors:  M E Phelps; E J Hoffman; S C Huang; D E Kuhl
Journal:  J Nucl Med       Date:  1978-06       Impact factor: 10.057
  5 in total
  2 in total

1.  Software correction of scatter coincidence in positron CT.

Authors:  M Endo; T A Iinuma
Journal:  Eur J Nucl Med       Date:  1984

2.  Positron CT imaging using a high resolution PCT device (Positologica-I), 11CO, 13NH3, and 18FDG in clinical evaluation of cerebrovascular diseases.

Authors:  F Shishido; Y Tateno; T Takashima; S Tamachi; A Yamaura; T Yamasaki
Journal:  Eur J Nucl Med       Date:  1984
  2 in total

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