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題 名 | Impacts of Pinhole Images on Image Quality and Interpretation of Pediatric ⁹⁹mTc-DMSA Renal Scintigraphy=針孔準直儀對小兒病患鎝-99m-DMSA腎臟影像品質與判讀的影響 |
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作 者 | 鄭時維; 邱志宏; 徐健欽; 方淑屏; 張文遠; 楊振成; 陳啓雲; | 書刊名 | 核子醫學雜誌 |
卷 期 | 22:3 2009.09[民98.09] |
頁 次 | 頁145-153 |
分類號 | 414.93 |
關鍵詞 | 鎝-99m-DMSA腎臟掃描; 針孔影像; 平行孔影像; 影像品質; 影像判讀; ⁹⁹mTc-DMSA renal scintigraphy; Pinhole image; Parallel-hole image; Image quality; Image interpretation; |
語 文 | 英文(English) |
中文摘要 | 目的:本研究目的在比較小兒病人鎝-99m-DMSA腎臟掃描使用針孔與平行孔準直儀的影像品質與影像判讀。 材料與方法:從2007年1月到2007年12月問,共有202位小兒病人(99位男孩和103位女孩,年齡範圍1個月到14歲)因爲泌尿道感染懷疑急性腎盂腎炎到本院核醫科進行鎔-99m-DMSA腎臟掃描。所有病人常規進行平行孔與針孔準直儀造影,總共404個腎臟(808張影像)由兩位核子醫學專科醫師分別進行影像品質評估與影像判讀。影像品質評估分爲三種等級:差(腎臟邊緣模糊,1分)、尚可(腎臟邊緣清晰但內部結構無法分辨,2分)、佳(腎臟邊緣與內部結構清晰可辨,3分)。針對急性腎盂腎炎的判讀分爲三類:陰性、不確定、陽性。 結果:在影像品質方面,醫師本身與兩位醫師間對於平行孔影像的評估有良好的一致性,醫師本身對於針孔影像的評估則有極佳的一致性,兩位醫師間對於針孔影像的評估也有良好的一致性。在影像判讀方面,不管是平行孔影像或是針孔影像,醫師本身的判讀一致性都是極佳的,兩位醫師間的判讀一致性也是良好的。平行孔影像與針孔影像的品質分數分別爲2.l0±0.55與2.40±0.60(A醫師)以及208±0.50與2.32±0.58(B醫師),針孔影像的品質分數高於平行孔影像(P<0.00l)。根據兩位醫師的評估,針孔影像和平行孔影像比較起來分別改善了126個(31.2%)與111個(27.5%)腎臟的影像品質,針孔影像也分別改變了45個(11.1%)與50個(12.4%)腎臟的影像判讀。 結論:在小兒病人的鎝-99m-DMSA腎臟掃描,針孔影像和平行孔影像比較起來,不僅可以改善影像品質,也會改變影像的判讀。因此,我們建議在小兒病人的鎝-99m-DMSA腎臟掃描常現使用針孔影像。 |
英文摘要 | The purpose of this study was to compare the image qualities and interpretations of pediatric (superscript 99m)Tc-DMSA renal scintigraphy between parallel-hole and pinhole images. Methods: Between Jan 2007 and Dec 2007, 202 pediatric patients (99 boys and 103 girls; age range from 1 month to 14 years old) with urinary tract infection underwent (superscript 99m)Tc-DMSA renal scintigraphy for diagnosis of acute pyelonephritis (APN). Both of parallel-hole and pinhole images were acquired in all patients. A total of 808 images were assessed by two nuclear medicine specialists. The qualities of images were classified into three grades: poor (blurred renal contour, score 1), fair (clear renal contour but internal architecture not clearly visible, score 2), and good (renal contour and internal architecture clearly visible, score 3). Three categories of image interpretation for APN (negative, equivocal, and positive) were employed. Results: Good agreements within and between the two observers were noted in image quality assessments of parallel-hole images. Excellent and good agreements within and between the two observers, respectively, were noted in image quality assessments of pinhole images. In both of interpretations for parallel-hole and pinhole images, the intraobserver and interobserver agreements by the two observers were excellent and good, respectively. The mean quality scores of parallelhole and pinhole images were 2.10±0.55, 2.40±0.60 by observer A and 2.08±0.50, 2.32±0.58 by observer B, respectively (Wilcoxon test, both P <0.001). Pinhole collimator improved the qualities of DMSA images in 126/404 (31.2%) kidneys (23 poor to fair, 4 poor to good, and 99 fair to good) by observer A and in 111/404 (27.5%) kidneys (21 poor to fair, 3 poor to good, and 87 fair to good) by observer B. With pinhole images, interpretations were changed in 45/404 (11.1%) kidneys (20 negative to equivocal, 18 equivocal to positive, and 7 equivocal to negative) by observer A and in 50/404 (12.4%) kidneys (17 negative to equivocal, 9 equivocal to positive, 21 equivocal to negative, and 3 positive to equivocal) by observer B. Conclusion: (superscript 99m)Tc-DMSA scintigraphy using pinhole collimator in pediatric patients can improve image qualities in comparison with parallel-hole collimator. The pinhole images also have impacts on the interpretation for APN. Accordingly, we suggest using pinhole collimator in (superscript 99m)Tc-DMSA scintigraphy for all pediatric patients routinely. |
本系統中英文摘要資訊取自各篇刊載內容。