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Tsutsui, Yuji, Awamoto, Shinichi, Himuro, Kazuhiko, Umezu, Yoshiyuki, Baba, Shingo, Sasaki, Masayuki. (1396). Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization. , 6(1), 15-23. doi: 10.22038/aojnmb.2017.26684.1186
Yuji Tsutsui; Shinichi Awamoto; Kazuhiko Himuro; Yoshiyuki Umezu; Shingo Baba; Masayuki Sasaki. "Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization". , 6, 1, 1396, 15-23. doi: 10.22038/aojnmb.2017.26684.1186
Tsutsui, Yuji, Awamoto, Shinichi, Himuro, Kazuhiko, Umezu, Yoshiyuki, Baba, Shingo, Sasaki, Masayuki. (1396). 'Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization', , 6(1), pp. 15-23. doi: 10.22038/aojnmb.2017.26684.1186
Tsutsui, Yuji, Awamoto, Shinichi, Himuro, Kazuhiko, Umezu, Yoshiyuki, Baba, Shingo, Sasaki, Masayuki. Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization. , 1396; 6(1): 15-23. doi: 10.22038/aojnmb.2017.26684.1186

Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization

Asia Oceania Journal of Nuclear Medicine and Biology
مقاله 3، دوره 6، شماره 1، فروردین 2018، صفحه 15-23    اصل مقاله (2.11 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22038/aojnmb.2017.26684.1186
نویسندگان
Yuji Tsutsui* 1؛ Shinichi Awamoto2؛ Kazuhiko Himuro1؛ Yoshiyuki Umezu2؛ Shingo Baba3؛ Masayuki Sasaki4
1Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan
2Division of Radiology, Department of Medical Technology, Kyushu University Hospital
3Department of Clinical Radiology, Kyushu University Hospital, Fukuoka, Japan
4Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University
چکیده
Objective(s): The aim of this study is to examine the effect of different smoothing filters on the image quality and SUVmax to achieve the guideline recommended positron emission tomography (PET) image without harmonization. Methods: We used a Biograph mCT PET scanner. A National Electrical Manufacturers Association (NEMA) the International Electrotechnical Commission (IEC) body phantom was filled with 18F solution with a background activity of 2.65 kBq/mL and a sphere-to-background ratio of 4. PET images obtained with the Biograph mCT PET scanner were reconstructed using the ordered subsets-expectation maximization (OSEM) algorithm with time-of-flight (TOF) models (iteration, 2; subset, 21); smoothing filters including the Gaussian, Butterworth, Hamming, Hann, Parzen, and Shepp-Logan filters with various full width at half maximum (FWHM) values (1-15 mm) were applied. The image quality was physically assessed according to the percent contrast (QH,10), background variability (N10), standardized uptake value (SUV), and recovery coefficient (RC). The results were compared with the guideline recommended range proposed by the Japanese Society of Nuclear Medicine and the Japanese Society of Nuclear Medicine Technology. The PET digital phantom was developed from the digital reference object (DRO) of the NEMA IEC body phantom smoothed using a Gaussian filter with a 10-mm FWHM and defined as the reference image. The difference in the SUV between the PET image and the reference image was evaluated according to the root mean squared error (RMSE). Results: The FWHMs of the Gaussian, Butterworth, Hamming, Hann, Parzen, and Shepp-Logan filters that satisfied the image quality of the FDG-PET/CT standardization guideline criteria were 8-12 mm, 9-11 mm, 9-13 mm, 10-13 mm, 9-11 mm, and 12- 15 mm, respectively. The FWHMs of the Gaussian, Butterworth, Hamming, Hann, Parzen, and Shepp-Logan filters that provided the smallest RMSE between the PET images and the 3D digital phantom were 7 mm, 8 mm, 8 mm, 8 mm, 7 mm, and 11 mm, respectively. Conclusion: The suitable FWHM for image quality or SUVmax depends on the type of smoothing filter that is applied.
کلیدواژه‌ها
FDG PET؛ SUV؛ Smoothing filter
مراجع

 

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