| Japanese |
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| Title | Transmission Scanを省略した全身PETによるがんの検出 |
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| Subtitle | 原著 |
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| Authors | 安田聖栄*, 井出満*, 高木繁治*, 正津晃*, 三富利夫**, 小林真***, 鈴木豊*** |
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| Authors(kana) | |
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| Organization | *山中湖クリニック画像診断センター, **東海大学医学部附属病院第二外科, ***核医学科 |
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| Journal | 核医学 |
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| Volume | 33 |
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| Number | 4 |
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| Page | 367-373 |
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| Year/Month | 1996/4 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」全身PETががんの診断で用いられるようになった. PETでは吸収補正のためのtransmission scanが行われるが, 全身PETでは時間がかかるという欠点がある. transmission scanを行い全身PETを施行した悪性腫瘍32症例で, 吸収補正をした画像(AC+画像)で陽性の106病巣が, 吸収補正をしない画像(AC-画像)でも検出できるか調べた. 大きな(11cm)乳癌のAC-画像では, 18F-FDG高集積によるartifactのため, 傍胸骨リンパ節転移が検出できなかった. 再発大腸癌のAC-画像では, 傍大動脈リンパ節転移は減衰の影響を最大に受ける体深部の病巣であったため, 検出困難であった. しかし106病巣中104病巣(98.1%)はAC-画像でも検出可能であった. transmission scanを省略した全身PETにおいても, がんの検出はほぼ満足できると考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | PET, Whole-body PET, 18F-FDG, Transmission scan, Oncology. |
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| English |
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| Title | Cancer Detection with Whole - Body FDG PET Images without Attenuation Correction |
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| Subtitle | Original Articles |
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| Authors | Seiei YASUDA*, Michiru IDE*, Shigeharu TAKAGI*, Akira SHOHTSU*, Toshio MITOMI**, Shin KOBAYASHI***, Yutaka SUZUKI*** |
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| Authors(kana) | |
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| Organization | *HIMEDIC Imaging Center at Lake Yamanaka, **Second Department of Surgery, Tokai University School of Medicine, ***Division of Nuclear Medicine, Tokai University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 33 |
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| Number | 4 |
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| Page | 367-373 |
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| Year/Month | 1996/4 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Whole-body positron emission tomography(PET)using 2-deoxy-2-[18F]fluoro-D-glucose(FDG)has been applied successfully for the detection of cancer. In PET studies, transmission scans for attenuation correction are usually performed. In whole-body PET studies, however, the transmission scans lengthen the acquisition time and are not practical for routine clinical use. Thirty-two patients underwent whole-body PET studies with transmission scans. A total of 106 lesions were true positive on corrected images. At the same time that the corrected images were being reconstructed, uncorrected images were also reconstructed and visually inspected. In a patient with a large breast cancer(11cm in diameter), the parasternal metastatic lymph node was not identified on the uncorrected image because of image artifacts produced by high FDG accumulation in the breast cancer. In a patient with recurrent colonic cancer, paraaortic metastatic lymph nodes were not well visualized because of attenuation effects. However, 104 out of 106(98.1%)lesions were recognizable on uncorrected images as well as corrected images. This suggests that uncorrected images can be used for the detection of cancers. |
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| Practice | Clinical medicine |
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| Keywords | PET, Whole-body PET, 18F-FDG, Transmission scan, Oncology. |
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