※一部利用できない機能があります
Optimization of attenuation and scatter corrections in sentinel lymph node scintigraphy using SPECT/CT systems
- フォーマット:
- 論文
- 責任表示:
- Yoneyama, Hiroto ; Tsushima, Hiroyuki ; Onoguchi, Masahisa ; Konishi, Takahiro ; Nakajima, Kenichi ; Matsuo, Shinro ; Kayano, Daiki ; Wakabayashi, Hiroshi ; Inaki, Anri ; Kinuya, Seigo
- 言語:
- 英語
- 出版情報:
- The Japanese Society of Nuclear Medicine = 日本核医学会 / Springer-Verlag Tokyo, 2015-04-01
- 著者名:
Yoneyama, Hiroto Tsushima, Hiroyuki Onoguchi, Masahisa Konishi, Takahiro Nakajima, Kenichi Matsuo, Shinro Kayano, Daiki Wakabayashi, Hiroshi Inaki, Anri Kinuya, Seigo - 掲載情報:
- Annals of Nuclear Medicine
- ISSN:
- 0914-7187
- 巻:
- 29
- 通号:
- 3
- 開始ページ:
- 248
- 終了ページ:
- 255
- バージョン:
- author
- 概要:
- Objective: Although SPECT/CT systems have been used for sentinel lymph node (SLN) imaging, few studies have focused on optimization of attenuation correction (AC) and scatter correction (SC). While SLNs could be detected in conventional planar images, they sometimes do not appear in SPECT/CT images. The purpose of this study was to investigate the optimal AC and SC and to improve the detectability of SLNs in examinations using SPECT/CT systems. Materials and … methods: The study group consisted of 56 female patients with breast cancer. In SPECT/CT imaging, four kinds of images were created with and without AC and SC; namely, AC−SC−, AC+SC−, AC−SC+ and AC+SC+. Five nuclear medicine physicians interpreted the planar and SPECT/CT images with five grades of confidence levels (1–5). The detection rate was calculated as the number of patients whose average confidence levels of interpretation were more than 4, divided by the total number of patients. Results: The confidence level of interpretation and the detection rate provided by the planar images were 4.76 ± 0.49 and 94.6 %, respectively. In SPECT/CT imaging, the AC+SC− provided the best detection rate (confidence level of interpretation, 4.81 ± 0.38; detection rate, 98.2 %), followed by the AC−SC− (4.70 ± 0.55, 89.3 %), and the AC−SC+ (4.39 ± 1.2, 78.6 %). The lowest values were obtained for the AC+SC+ (4.36 ± 1.22, 78.6 %). Regarding the confidence levels of interpretation, significant differences were observed between AC+SC− and AC−SC−, AC+SC− and AC+SC+, AC+SC− and AC−SC+, and between planar images and AC+SC+ (P = 0.0021, 0.0009, 0.0013, and 0.0056, respectively). Conclusions: When SPECT/CT was used, AC improved the detection of SLNs. SC caused disappearance of a faint SLN in some cases and should not be performed. © 2014, The Japanese Society of Nuclear Medicine. 続きを見る
- URL:
- http://hdl.handle.net/2297/43422
類似資料:
Lippincott Williams and Wilkins |
金沢大学医薬保健研究域保健学系 |
Japanese Society of Nuclear Medicine 日本核医学会 / Springer Verlag (Germany) |
Springer verlag (Germany) / The Japanese Society of Nuclear Medicine |
The Japanese Society of Nuclear Medicine / Springer Verlag (Germany) |
Lippincott, Williams & Wilkins |
Springer Verlag (Germany) |
Lippincott, Williams & Wilkins |