@article {Otomi1201, author = {Yoichi Otomi and Hideki Otsuka and Kaori Terazawa and Moriaki Yamanaka and Naoko Kawano and Saho Irahara and Michiko Kubo and Takayoshi Shinya and Masafumi Harada}, title = {The diagnostic ability of SPECT/CT fusion imaging for gastrointestinal bleeding}, volume = {58}, number = {supplement 1}, pages = {1201--1201}, year = {2017}, publisher = {Society of Nuclear Medicine}, abstract = {1201Objectives: To evaluate the diagnostic ability of SPECT/CT imaging (planar + SPECT/CT group) in gastrointestinal bleeding scintigraphy in comparison to planar imaging alone (planar group) and SPECT imaging (planar + SPECT group).Methods: Twenty patients (21 scintigraphy examinations) who underwent gastrointestinal bleeding scintigraphy in the past 7 years and in whom the bleeding site was identified by endoscopy or capsule endoscopy, were included in the present study. Five patients (5 scintigraphy examinations) were diagnosed by planar imaging (planar group). Eight patients (9 scintigraphy examinations) were diagnosed by planar and SPECT imaging (planar + SPECT group). Seven patients (7 scintigraphy examinations) were diagnosed using planar and SPECT/CT imaging (planar + SPECT/CT group). We retrospectively reviewed the gastrointestinal bleeding scintigraphy for the 20 patients (21 scintigraphy examinations) to investigate the diagnostic ability of the three imaging modalities. Each method was evaluated and compared.Results: The diagnostic ability of the three methods for detecting the presence of gastrointestinal bleeding was as follows. The planar group showed 100\% sensitivity (3/3), 100\% specificity (2/2), a PPV of 100\% (3/3), an NPV of 100\% (2/2), and 100\% accuracy (5/5). The Planar + SPECT group showed 87.5\% sensitivity (7/8), 100\% specificity (1/1), a PPV of 100\% (7/7), an NPV of 50\% (1/2), and 88.9\% accuracy (8/9). The Planar + SPECT/CT group showed 100\% sensitivity (6/6), 100\% specificity (1/1), a PPV of 100\% (6/6), an NPV of 100\% (1/1), and 100\% accuracy (7/7). The diagnostic ability of Planar, Planar + SPECT and Planar + SPECT/CT for detecting the site of bleeding was 33.3\% (1/3), 75\% (6/8) and 100\% (6/6), respectively.Conclusion: Although each of the imaging methods was good for detecting the presence of gastrointestinal bleeding, Planar + SPECT/CT imaging showed a higher diagnostic ability for detecting the site of gastrointestinal bleeding than the other two methods (planar imaging and planar + SPECT imaging). Research Support: View this table:Table 1. The diagnostic ability for detecting the presence of gastrointestinal bleeding View this table:Table 2. The diagnostic ability for detecting the site of gastrointestinal bleeding}, issn = {0161-5505}, URL = {https://jnm.snmjournals.org/content/58/supplement_1/1201}, eprint = {https://jnm.snmjournals.org/content}, journal = {Journal of Nuclear Medicine} }