Segmental acquisition method for stationary objects in 18F-fluorodeoxyglucose positron emission tomography tests

Tsuda, Koji; Aikawa, Naoyuki; Suzuki, Takayuki; Moriya, Etsuo; Yamaguchi, Masayuki; Kitamura, Hiroyuki; Hanai, Kouzou; Umeda, Izumi O.; Fukushi, Masahiro; Moriyama, Noriyuki; Fujii, Hirofumi

doi:10.1007/s11604-010-0482-5

Cited by 1 publication

(2 citation statements)

References 17 publications

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“…The concentration of radioactivity in the background area was set to match that of the back muscles of 20 actual patients. 4 The spheres were filled with FDG solution so that the ratio of radioactivity concentration in the spheres to that of the background area was 8:1, in accordance with the MEMA NU-2 2018 standard. 8 The scattering phantom was filled with FDG solution with radioactivity of 66.0 MBq.…”

Section: Methodsmentioning

confidence: 99%

“…Our previous study demonstrated that the segmental acquisition method using a Fourier rebinning (FORE) + ordered subsets expectation-maximization (OSEM) reconstruction algorithm could suppress the effects of body motion and improve the image quality of FDG PET, 4 but the effects of this reconstruction algorithm on image data obtained with a short acquisition time have not been well investigated yet. Therefore, we aimed to develop a reconstruction algorithm for a short acquisition time so that it can also be applied to dynamic studies and, by obtaining image data repeatedly with a short scan time, we can obtain PET images from image data that are not affected by body motion, even when body movements occur.…”

Section: Introductionmentioning

confidence: 99%

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3D-OSEM versus FORE + OSEM: Optimal Reconstruction Algorithm for FDG PET with a Short Acquisition Time

Tsuda,

Suzuki,

Toya

et al. 2023

World J Nucl Med

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Objective In this study, we investigated the optimal reconstruction algorithm in fluorodeoxyglucose (FDG) positron emission tomography (PET) with a short acquisition time. Materials and Methods In the phantom study, six spheres filled with FDG solution (sphere size: 6.23–37 mm; radioactivity ratio of spheres to background = 8:1) and placed in a National Electrical Manufacturers Association phantom were evaluated. Image acquisition time was 15 to 180 seconds, and the obtained image data were reconstructed using each of the Fourier rebinning (FORE) + ordered subsets expectation-maximization (OSEM) and 3D-OSEM algorithms. In the clinical study, mid-abdominal images of 19 patients were evaluated using regions of interest placed on areas of low, intermediate, and high radioactivity. All obtained images were investigated visually, and quantitatively using maximum standardized uptake value (SUV) and coefficient of variation (CV). Results In the phantom study, FORE + OSEM images with a short acquisition time had large CVs (poor image quality) but comparatively constant maximum SUVs. 3D-OSEM images showed comparatively constant CVs (good image quality) but significantly low maximum SUVs. The results of visual evaluation were well correlated with those of quantitative evaluation. Small spheres were obscured on 3D-OSEM images with short acquisition time, but image quality was not greatly deteriorated. The clinical and phantom studies yielded similar results. Conclusion FDG PET images with a short acquisition time reconstructed by FORE + OSEM showed poorer image quality than by 3D-OSEM. However, images obtained with a short acquisition time and reconstructed with FORE + OSEM showed clearer FDG uptake and more useful than 3D-OSEM in the light of the detection of lesions.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D-OSEM versus FORE + OSEM: Optimal Reconstruction Algorithm for FDG PET with a Short Acquisition Time

Tsuda,

Suzuki,

Toya

et al. 2023

World J Nucl Med

Self Cite

View full text Add to dashboard Cite

show abstract

Segmental acquisition method for stationary objects in 18F-fluorodeoxyglucose positron emission tomography tests

Abstract: For stationary objects, the quality of images obtained by the segmental method is equivalent to that of images obtained conventionally by continuous acquisition. Moreover, under some conditions SIs provide better results than CIs.

Cited by 1 publication

References 17 publications

3D-OSEM versus FORE + OSEM: Optimal Reconstruction Algorithm for FDG PET with a Short Acquisition Time

3D-OSEM versus FORE + OSEM: Optimal Reconstruction Algorithm for FDG PET with a Short Acquisition Time

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