The Morphometric Study of the Pons and Cerebellum in Korean using MRI

PURPOSE: To evaluate the size of normal pons and cerebellum in vivo and the change in size according to age, and to compare those with measurement of the diseased pons and cerebellum. MATERIALS AND METHODS: 121 normal adults(M:F=54:67), 5 patients with OPCD and 19 patients with WallerJan degeneration were studied. The normal group was divided into 5 subgroups according to the age (ranged from 20 to 72 years). 1.5T GE Signa MR unit was used. On axial plane, the AP(A) and transverse(B) diameters of the pons, the size of the middle cerebellar peduncle(C), and transverse diameter of the posterior fossa(D) and the cerebellum(E) were measured. On midsagittal plane, the longitudinal(F) and AP(G) diameters of the basis pontis were measured. The ratios of E/D and F/G were calculated. The student t test was used for statistical analysis. RESULTS: C, E and F/G were 15.5mm+/-1.3, 99.8mm+/-4.3 and 1.63+/-.10, respectively. F/G, H/I, and H/J were larger in male(p<.01). All data of the pons showed no statistically significant differences among age groups. E of the seventh decades was shorter than that of the third decades(p<.05). C(12.7 mm+/-1.4) in OPCD and F/G(1. 81+/-.10) in Wallerian degeneration(p<.01) showed the most significant differences when they were compared to the normal. CONCLUSION: Although the cerebellum decreased in size with age, the pons maintained its size up to eighth' decades. The measurement of middle cerebellar peduncle on axial plane (C) and the ratio of basis pontis on midsagittal plane (F/G) were important in the evaluation of OPCD and WallerJan degeneration, respectively.

Hepatocellular Carcinoma; Treatment with a Rodioiodinated Fatty Acid Ester

It has been shown that iodinated fatty acid esters such as Ethiodol(*) or Lipiodol(**) are selectively retained in hypervascular hepatic tumors following intrahepatic arterial admininstration. Such agents have been utilized in the detection and treatment of hepatocellular carcinoma (HCC) along with anticancer drug emulsions. Radioildination of Lipiodol(1-131-Lipiodol) was achieved by using a simple exchange method and the agent was used in the treatment of HCC following intrahepatic arterial-injection via superselective catheterization of tumor feeding vessels. Forty patients with HCC (massive 18; multinodular 12; infiltrative 10) were treated in an attempt to deliver a high dose of internal radiation; a cumulative tumor dose of 12,000 rad(120 GY) or higher was aimed in single or multiple procedures. Following therapy, the patients were divided into 2 groups, responsive or nonresponsive. Patients classfied as massive type responded to this treatment best (72.3%) followed by multinodular type (33.3%) and infiltrative type(10.0%). According to the size of tumor there was an 80.0% response for tumors of less than 5cm in diameter, 60.0%, between 5 to 8cm and 9.0% larger than 10cm in diameter. The clinical results of this treatment modality appear to be quite promising in the management of HCC, especially in the less than 8cm sized massive type of HCC. Also this method was able to not only provide long term local control but also a good quality of life without complications.