The interpolated projection data estimation method improves the image quality of myocardial perfusion SPECT with a short acquisition time

Objective The interpolated projection data estimation processing (IPDE) method increases the amount of projection data by interpolation of the projection data. We examined the usefulness of the IPDE method for 201 Tl myocardial perfusion imaging (MPI) single photon emission computed tomography (SPEC...

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Bibliographic Details
Published in:Annals of nuclear medicine 2012-02, Vol.26 (2), p.123-130
Main Authors: Asao, Kimie, Takaki, Akihiro, Tominaga, Mitsuhiro, Sasaki, Masayuki
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Algorithms
Computed tomography
Computer programs
Data processing
Female
Heart diseases
Humans
Imaging
Ischemia
Male
Medicine
Medicine & Public Health
Middle Aged
Myocardial Ischemia - diagnosis
Myocardial Ischemia - diagnostic imaging
Myocardial Perfusion Imaging - statistics & numerical data
Nuclear Medicine
Original Article
Perfusion
Radiology
Radiopharmaceuticals
Single photon emission computed tomography
Software
Stress
Thallium
Thallium Radioisotopes
Tomography, Emission-Computed, Single-Photon - statistics & numerical data
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Summary:Objective The interpolated projection data estimation processing (IPDE) method increases the amount of projection data by interpolation of the projection data. We examined the usefulness of the IPDE method for 201 Tl myocardial perfusion imaging (MPI) single photon emission computed tomography (SPECT) with a short acquisition time. Methods Forty patients with suspected ischemic heart disease underwent stress 201 Tl-MPI SPECT. Both stress and delayed images were acquired with 4 cycles of 360° continuous rotation with a 90-direction setting for 14 min. The projection data used for reconstruction were 1) all cycle data (Tl-90-14min), 2) 2 cycles of data (Tl-90-7min), and 3) 2 cycles of data processed using the IPDE method (Tl-180IPDE-7min). This study compared the detection of the perfusion defect by the uptake score and the image quality of 201 Tl-MPI SPECT using the normalized mean square error (NMSE). Results The uptake score of Tl-180IPDE-7min was significantly more concordant with Tl-90-14min in comparison to the Tl-90-7min ( p  
ISSN:0914-7187
1864-6433
DOI:10.1007/s12149-011-0548-1