Norikazu Matsutomo
   Department   Kawasaki University of Medical Welfare  ,
   Position   Associate Professor with Special Assignment
Article types 原著
Language English
Peer review Peer reviewed
Title Compressed sensing reconstruction shortens the acquisition time for myocardial perfusion imaging: a simulation study.
Journal Formal name：Radiological physics and technology
Abbreviation：Radiol Phys Technol
ISSN code：18650341/18650333
Domestic / ForeginDomestic
Volume, Issue, Page 16(3),pp.397-405
Author and coauthor Mitsuha Fukami, Norikazu Matsutomo, Takeyuki Hashimoto, Tomoaki Yamamoto, Masayuki Sasaki
Publication date 2023/09
Summary Compressed sensing (CS) has been used to improve image quality in single-photon emission tomography (SPECT) imaging. However, the effects of CS on image quality parameters in myocardial perfusion imaging (MPI) have not been investigated in detail. This preliminary study aimed to compare the performance of CS-iterative reconstruction (CS-IR) with filtered back-projection (FBP) and maximum likelihood expectation maximization (ML-EM) on their ability to reduce the acquisition time of MPI. A digital phantom that mimicked the left ventricular myocardium was created. Projection images with 120 and 30 directions (360°), and with 60 and 15 directions (180°) were generated. The SPECT images were reconstructed using FBP, ML-EM, and CS-IR. The coefficient of variation (CV) for the uniformity of myocardial accumulation, septal wall thickness, and contrast ratio (Contrast) of the defect/normal lateral wall were calculated for evaluation. The simulation was performed ten times. The CV of CS-IR was lower than that of FBP and ML-EM in both 360° and 180° acquisitions. The septal wall thickness of CS-IR at the 360° acquisition was inferior to that of ML-EM, with a difference of 2.5 mm. Contrast did not differ between ML-EM and CS-IR for the 360° and 180° acquisitions. The CV for the quarter-acquisition time in CS-IR was lower than that for the full-acquisition time in the other reconstruction methods. CS-IR has the potential to reduce the acquisition time of MPI.
DOI 10.1007/s12194-023-00730-5
PMID 37382801