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CT via percutaneous splenoportography: experiment and application
1Department of Image Diagnosis, First Military Medical University, Guangzhou 510515, China.
Objective:
To introduce computed tomography via percutaneous splenoportography (CTSP), a new method for determining hepatic diseases.
Methods:
Ten hybrid dogs and 31 patients with primary hepatic cancer (PHC) were included in the study. Each dog was examined by CT, computed tomography via arterial portography (CTAP), and CTSP to compare the enhanced density of the liver. The 31 patients were examined by CTSP and the appearance of PHC was compared with their pathological results to evaluate the diagnostic significance of CTSP.
Results:
The animal experiment showed that both CTAP and CTSP could obviously enhance the density of the liver (P < 0.01), but no significant difference was observed in the enhanced densities between the two methods (P > 0.05). On the CTSP images of the 31 patients, the density of the livers was increased to 168-192 Hu, whereas the density of the cancers was as low as that on the images of CT scans (< 58 Hu). The CTSP findings were consistent with the surgical ones from space occupying lesions. The diagnostic value of CTSP was obviously superior to that of general enhanced CT. However, it was difficult for CTSP to show nodules less than 1 cm in size located on the surface of the liver or the hepatic portal zone.
Conclusions:
Like CTAP, CTSP is also a sensitive method for showing occupant in the liver. But the equipments and the procedures are simpler for CTSP than for CTAP. CTSP is an alternative procedure in clinical practice.