Superparamagnetic iron-oxide-enhanced diffusion-weighted magnetic resonance imaging for the diagnosis of intrapancreatic accessory spleen

被引：7

作者：

Ishigami, Kousei ^{[1
]}

Nishie, Akihiro ^{[1
]}

Nakayama, Tomohiro ^{[1
]}

Asayama, Yoshiki ^{[1
]}

Kakihara, Daisuke ^{[1
]}

Fujita, Nobuhiro ^{[1
]}

Ushijima, Yasuhiro ^{[1
]}

Okamoto, Daisuke ^{[1
]}

Ohtsuka, Takao ^{[2
]}

Mori, Yasuhisa ^{[2
]}

Ito, Tetsuhide ^{[3
]}

Mochidome, Naoki ^{[4
]}

Honda, Hiroshi ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Med Sci, Dept Clin Radiol, Higashi Ku, 3-1-1 Maidashi, Fukuoka, Fukuoka 8128582, Japan

[2] Kyushu Univ, Grad Sch Med Sci, Surg & Oncol, Higashi Ku, 3-1-1 Maidashi, Fukuoka, Fukuoka 8128582, Japan

[3] Kyushu Univ, Grad Sch Med Sci, Med & Bioregulatory Sci, Higashi Ku, 3-1-1 Maidashi, Fukuoka, Fukuoka 8128582, Japan

[4] Kyushu Univ, Grad Sch Med Sci, Anat Pathol, Higashi Ku, 3-1-1 Maidashi, Fukuoka, Fukuoka 8128582, Japan

来源：

ABDOMINAL RADIOLOGY | 2019年 / 44卷 / 10期

关键词：

Intrapancreatic accessory spleen; Superparamagnetic iron oxide; Diffusion-weighted image; Pancreatic tumor; Diagnostic performance; FINE-NEEDLE-ASPIRATION; EPIDERMOID CYST; CONTRAST AGENTS; MR FINDINGS; ULTRASONOGRAPHY; PANCREAS; TUMOR; MASS;

D O I：

10.1007/s00261-019-02189-8

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Purpose To evaluate the diagnostic performance of superparamagnetic iron-oxide (SPIO)-enhanced diffusion-weighted image (DWI) for distinguishing an intrapancreatic accessory spleen from pancreatic tumors. Materials and methods Twenty-six cases of intrapancreatic accessory spleen and nine cases of pancreatic tail tumors [neuroendocrine tumor (n = 8) and pancreatic adenocarcinoma (n = 1)] were analyzed. Two blind reviewers retrospectively reviewed the SPIO-enhanced magnetic resonance imaging (MRI) scans. The lesion visibility grades were compared and the diagnostic performance of SPIO-enhanced DWI was compared to those of SPIO-enhanced T2WI and T2*WI with the use of a receiver operating characteristic (ROC) analysis. Results The grade of lesion visibility was the highest on DWI [mean +/- standard deviation (SD): 2.8 +/- 0.3] followed by T2WI (2.3 +/- 0.7, p < 0.001) and T2*WI (2.1 +/- 0.7, p < 0.0001). Reviewers 1 and 2 correctly characterized the presence or absence of SPIO uptake in 34 of 35 cases (97.1%) on DWI, 24 (68.6%) and 25 (71.4%) cases on T2WI, respectively, and 16 (45.7%) and 17 (48.6%) cases on T2*WI. The area under the ROC curve (AUC) of DWI was 0.974 and 0.989 for reviewers 1 and 2, respectively. For Reviewer 1, the AUC of DWI was significantly higher than that of T2*WI (0.756, p < 0.01), although it was not significantly different from that of T2WI (0.868, p = 0.0857). For Reviewer 2, the AUC of DWI was significantly higher than those of T2WI (0.846, p < 0.05) and T2*WI (0.803, p < 0.01). Conclusion The diagnostic performance of SPIO-enhanced DWI was better than those of SPIO-enhanced T2*WI and T2WI for the diagnosis of intrapancreatic accessory spleen.

引用

页码：3325 / 3335

页数：11

共 29 条

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