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Á¤¼±¾ç/Sun Yang Chung ±è¸íÁø/ÀÌÁ¾ÅÂ/À¯Çü½Ä/±èµ¿ÁØ/Myeong-Jin Kim/Jong Tae Lee/Hyung Sik Yoo/Dong Joon Kim

Abstract

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ÀÌ Ç༼Æ÷¾ÏÀº Èıâ ÇÇÁú±â°¡ °¡Àå ³ôÀº Æò±ÕÁ¡¼ö¸¦ º¸¿´´Ù.
°á ·Ð : ´ÙÁ߽ñâ CT´Â ÀÏ»óÀû CT¿¡ ºñÇØ º´º¯ÀÇ °ËÃâÀ²°ú Áø´ÜÀÇ Á¤È®µµ¸¦ ³ôÀÌÁö´Â ¸ø
ÇÏÁö¸¸ ½Å¼¼ Æ÷¾Ï°ú ÀÌÇ༼Æ÷¾ÏÀÇ Æ¯¼ºÀ» Æò°¡Çϴµ¥ µµ¿òÀ» ÁÙ ¼ö ÀÖÀ¸¸ç, º´º¯ÀÇ Á¾·ù¿¡
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¼±ÅÃÇÏ´Â °ÍÀÌ ¹Ù¶÷Á÷ÇÒ °ÍÀÌ´Ù.
#ÃÊ·Ï#
Purpose : To assess the utility of multiphasic spiral CT for characterizing renal
masses.
Materials & Methods : The study included 36 patients(53 lesions) referred for the
evaluation of renal masses suspected on the basis of the results of sonography or
radiography. Spiral CT of the kidneys was performed prior to and following power
injection of intravenous contrast material (Optiray-320). Postcontrast imaging data were
obtained and anlyzed during early and late corticomedullary(20-30-second delay),
nephrographic(60-70-second delay), and excertory (5-minute delay) phases. During each
phase, the ability to detect renal masses was evaluated, and the ability to diagnose
these masses on routine and multiphasic CT was assessed. Routine precontrast and
excretory phase CT studies were performed and the usefulness of each phase for
diagnosis of renal cell carcinoma(RCC) and transitional cell carcinoma(TCC) was
evaluated.
Results : The rates for the detection of renal masses were as follows : 94.3% on
precontrast scan, 93.8% during the early corticomedulolary phase(ECMP), 98.1% during
the late corticomedullary phase(LCMP), 100% during the nephrographic phase(NP), and
98.1% during the excretory phase(EP). During both routine and multiphasic CT,
diagnostic accuracy was 96.2%, though for differential diagnosis, multiphasic CT was
more helpful than routin CT in 4/16 cases of RCC and 2/8 cases of TCC. The highest
for lesion characterization, during the LCMP in RCC, and the LCMP and NP in TCC ;
for evaluation of tumor margin during the EP in both RCC and TCC ; for delineation of
the renal artery, during the LCMP in both RCC and TCC ; for delineating the renal
vein, during the NP in RCC, and the LCMP in TCC.
Conclusion : For the detection and correct diagnosis of lesions, multiphasic CT was not
superior to routine CT, but for the characterization of RCC and TCC, the former was
helpful. The most useful phase can differ according to the kind of renal mass, and so
for characterization of the mass, the most appropriate phase must be selected.

Å°¿öµå

neoplasms; CT; Kidney neoplasms; diagnosis; Computed tomography(CT); helical;

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