PURPOSE: To correlate the findings of perfusion-weighted imaging (PWI) with clinical outcomes in patients with acute lacunar infarction. MATERIALS AND METHODS: Eleven patients (7 males and 4 females) with acute lacunar infarction who were examined within 50 (mean, 29) hours of the onset of symptoms underwent conventional MRI, diffusion-weighted imaging (DWI) and PWI. Gadolinium (0.2 mmol/kg) was injected at a rate of 2 ml/sec, and PWI was performed using a gradient-echo EPI pulse sequence and the following parameters: TR/TE, 2000/60; flip angle, 90 degree; matrix size, 128X128. Relative cerebral blood volume (rCBV) maps were derived from gadolinium bolus perfusion-weighted images where rCBV ratios between infarcted areas were detected by DWI, and contralateral control areas were obtained. In each case, the resulting rCBV ratio at a lesion site was compared with the clinical outcome determined on the basis of the difference between National Institute Health Stroke Scale (NIHSS) scores at admission and discharge. RESULTS: With the aid of the time-intensity curve obtained at PWI, the rCBV maps revealed a hypoperfused area in 10 of 11 patients, and there was positive correlation (r=0.81) with clinical outcome. CONCLUSION: Although PWI has a lower detection rate than DWI, it may be a useful modality for helping determine prognosis in cases of acute lacunar infarction.
Blood Volume ; Diagnosis* ; Gadolinium ; Humans ; Magnetic Resonance Imaging* ; Male ; Perfusion* ; Prognosis ; Stroke ; Stroke, Lacunar*

Pylephlebitis usually occurs secondary to infection in the region drained by the portal venous system. A most common antesecent focus of infection is diverticulitis and the most common blood isolate is E. coli (54%), followed by Proteus mirabilis (23%). Overall mortality is 32% and most of the patients who had died had severe sepsis prior to the initiation of antibiotic therapy. We describe a case of pylephlebitis which had appendicitis and consequent septic thrombosis of the portal vein and its branches, with dissemination of infection to the liver. The patient had recovered due to timely antibiotic treatment alone and resulted in complete resolution. Early diagnosis and treatment are basic to a favorable clinical course.
Adult ; Appendicitis/complications* ; Case Report ; Human ; Liver Abscess/etiology ; Male ; Portal Vein* ; Sepsis/etiology ; Thrombophlebitis/etiology*

PURPOSE: To evaluate the usefulness of apparent diffusion coefficient (ADC) values using diffusion-weighted magnetic resonance imaging (DWI) in patients with ovarian cystic tumors. MATERIALS AND METHODS: During past 12 months, we studied 30 patients who were clinically suspected of having ovarian cystic tumors and who underwent DWI using a 1.5 T MR unit. Eight patients with small cystic ovarian lesions of less than 3 cm in diameter and insufficient DWI were excluded from the calculation of the ADC values. The remaining twenty-six cystic ovarian lesions in 22 patients were classified into four groups; ovarian cysts, cystadenomas, other benign tumors, and malignant tumors. DWI was obtained using single-shot spin echo planar imaging and two gradient steps (b values of 0, 800 sec/mm2). The ADC values were measured using regions-of-interest (ROI) in the cystic components of the DWI located in the same section as the T2-weighted image and away from the septation and solid components. RESULTS: The mean ADC values were 0.196+/-0.105x10(-3) mm2/sec in the ovarian cysts, 1.312+/-1.064x10(-3) mm2/sec in the cystadenomas, 0.274+/-0.124x10(-3) mm2/sec in the other benign tumors, and 1.011+/-0.080x10(-3) mm2/sec in the malignant tumors. The differences in the ADC values between the ovarian cysts and cystadenomas, the ovarian cysts and malignant tumors, the cystadenomas and other benign tumors, and the other benign tumors and malignant tumors were statistically significant (p < 0.01). There was no statistically significant difference in the ADC values between the ovarian cysts and other benign tumors, or between the cystadenomas and malignant tumors (p > 0.05). CONCLUSION: The calculated ADC values using DWI should be helpful in the differential diagnosis of cystic ovarian tumors.
Cystadenoma ; Diagnosis, Differential ; Diffusion* ; Echo-Planar Imaging ; Female ; Humans ; Magnetic Resonance Imaging* ; Ovarian Cysts* ; Ovary

Herpetic meningoencephalitis is a devastating disease with significant morbidity and mortality. One of the most serious clinical sequelae is aphasia, usually of sensory type, whereas, Broca's or motor aphasia is not a common manifestation. We report a case of herpetic meningoencephalitis diagnosed by polymerase chain reaction (PCR) and viral culture with Broca's aphasia as a neurologic sequela. A 35-year old male patient was admitted due to fever and altered mentality for 3 days. He was accompanied by nausea, vomiting, disorientation, and memory defect. Several vesicular eruptions were noted around the lips. Neck stiffness was present, but Kernig's and Brudzinski signs were not observed. Herpetic meningoencephalitis was confirmed with PCR and other diagnostic tests such as EEG, brain MRI, brain CT scan, and viral culture. His overall clinical condition was improved after acyclovir therapy, but Broca's aphasia remained as a sequela.
Acyclovir ; Adult ; Aphasia* ; Aphasia, Broca ; Brain ; Diagnostic Tests, Routine ; Electroencephalography ; Encephalitis, Herpes Simplex* ; Fever ; Herpes Simplex* ; Humans ; Lip ; Magnetic Resonance Imaging ; Male ; Memory ; Mortality ; Nausea ; Neck ; Polymerase Chain Reaction ; Tomography, X-Ray Computed ; Vomiting