Perfusion homogeneity of hepatic parenchyma in magnetic resonance imaging during spleno- portography

Abstract

Abstract: Objective To evaluate the homogeneity of hepatic parenchyma enhancement in magnetic resonance imaging during splenoportography (MRSP) in the portal phase. Methods MRSP was performed in 16 patients suspected of space-occupying lesions in the livers. The signal intensity of non-lesion abnormal perfusion areas and that of peripheral parenchyma were measured in all the scanning phases including unenhanced phase, portographic phase, equilibrium phase, and delayed phase. Results Perfusion abnormalities were observed in 8 non-lesion foci in the portal phase in 4 cases of hepatic cirrhosis, most frequently appearing in triangle or fan-like shapes (7/8) with unpredictable locations. Hepatic cirrhosis patients had more non-lesion perfusion abnormalities than non-cirrhosis patients. Conclusions The presence of non-lesion perfusion abnormalities in MRSP does not affect the diagnosis of the disease, and more homogeneous enhancement of the hepatic parenchyma in the portal phase can be achieved in MRSP than in CT during arterial portography and magnetic resonance imaging during arterial portography.

CLC Number:

R816.2

ZHONG Qun, ZHANG Xue-lin, ZHANG Yu-zhong, GUO Tao, CHANG Ren-min, CANG Peng, CHEN Bin, YU Li-juan. Perfusion homogeneity of hepatic parenchyma in magnetic resonance imaging during spleno- portography[J]. Journal of Southern Medical University, 2004, 24(02): 216-219.

References

[1] Dravid VS, Shapiro MJ, Mitchell DG, et al. MR portography: preliminary comparison with CT portography and conventional MR imaging[J]. J Magn Reson Imaging, 1994, 4(6): 767-71.
[2] Pavone P, Giuliani S, Cardone G, et al. Intraarterial portography with gadopentetate dimeglumine: improved liver-to-lesion contrast in MR imaging[J]. Radiology, 1991, 179(3): 693-7.
[3] Zhang XL, Qiu S J, Wang XQ, et al. CT via percutaneous splenoportography: experiment and application[J]. Chin Med J (Engl), 2000,113(3): 257-9.
[4] 张雪林.经脾门静脉造影CT(CTSP)的临床应用[J].第一军医大学学报(J First Mil Med Univ/Di Yi Jun Yi Da Xue Xue Bao),1999,19(4):封2,封3.
[5] 张雪林,邱士军,王晓琪,等.经脾门静脉造影CT在诊断原发性肝癌中的应用[J].第一军医大学学报,1999,19(4):325-7.Zhang XL, Qiu S J, Wang XQ, et al. Application of splenoportography CT for diagnosis of primary hepatocellular carcinoma[J]. J First Mil Med Univ/Di Yi Jun Yi Da Xue Xue Bao, 1999, 19(4): 325-7.
[6] 钟群,张雪林,张玉忠,等.经脾门静脉造影磁共振成像:一种新方法的建立及初步应用体会[J].第一军医大学学报,2002,22(12):21-3.Zhong Q, Zhang XL, Zhang YZ, et al. Magnetic resonance imaging during splenoportography: a new interventional diagnostic method and its preliminary research[J]. J First Mil Med Univ/Di Yi Jun Yi Da Xue Xue Bao, 2002, 22(12): 21-3.
[7] Yamagami T, Nakamura T, Iida S, et al. Nontumorous perfusion abnormalities of liver parenchyma adjacent to the falciform ligament as revealed by angiographic helical CT and angiography[J]. Acta Radiol, 2001, 42(4): 398-402.
[8] 郑卫权,张雪林,陈龙华.肝脏转移瘤经脾门静脉造影CT诊断[J].第一军医大学学报,2000,20(6):555-7.Zheng WQ, Zhang XL, Chen LH. Detection of hepatic metastatic tumor: sensitivity of CT during splenoportography[J]. J First Mil Med Univ/Di Yi Jun Yi Da Xue Xue Bao, 2000, 20(6): 555-7.
[9] Fujita T, Honjo K, Ito K, et al. Homogeneous enhancement of hepatic parenchyma: MR imaging during arterial portography versus CT during arterial pertography[J]. Abdom Imaging, 1998, 23(1):51-5.
[10] Soyer P, Laissy JP. MR arterial portography with gadolinium-DOTA:analysis ofnontumoral perfusion abnormalities[J]. J Magn Reson Imaging, 1996, 6(2): 282-5.
[11] Baron RL. Detection of liver neoplasms: techniques and outcomes[J]. Abdom Imaging, 1994, 19(4): 320-2.
[12] Matsui O, Takahashi S, Kadoya M, et al. Pseudolesion in segment IV of the liver at CT during arterial portography: correlation with aberrant gastric venous drainage[J]. Radiology, 1994, 193(1): 31-5.
[13] Yu JS, Kim KW, Lee JT, et al. Focal lesions in cirrhotic liver: comparing MR imaging during arterial portography with Gd-enhanced dynamic MR imaging[J]. Yonsei Med J, 2000, 41(5): 546-55.
[14] Fujita T, Honjo K, Ito K, et al. Homogeneous enhancement of hepatic parenchyma: MR imaging during arterial portography versus CT during arterial portography[J]. Abdom Imaging, 1998, 23(1): 51-5.