• Journal of Korean Neurosurgical Society
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• v.40 no.2
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• pp.128-130
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• 2006

Aneurysms arising from the ophthalmic artery itself are very rare compared with aneurysms originating from the bifurcation of the ophthalmic artery and carotid artery. There was only one reported case of a ruptured aneurysm of the ophthalmic artery itself. We discuss clinical significance of an aneurysm at this site, as well as the role of three dimentional image of multislice computed tomography angiogram[3D-image of MCTA] in determining the cause of subarachnoid hemorrhage[SAH].

• Journal of Korean Neurosurgical Society
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• v.51 no.1
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• pp.40-43
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• 2012

Two cases of the posterior fossa dissecting aneurysm associated with a double origin of the posterior inferior cerebellar artery (DOPICA) causing subarachnoid hemorrhage are presented. After observing a relationship between the aneurysm and DOPICA on a three dimensional rotational angiogram (3DRA), the dissecting aneurysms were successfully obliterated by surgical trapping and endovascular internal trapping, respectively. This report warrants suspecting DOPICA of an associating anomaly predisposing to dissecting aneurysm in the vertebral artery-posterior inferior cerebellar artery territory and highlights the role of 3DRA in pretreatment evaluation of unusual aneurysms accompanying a particular anatomical variation.

• Journal of Biomedical Engineering Research
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• v.8 no.1
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• pp.81-86
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• 1987

An image feature extraction method for the low contrast fluoresceln angiogram in dlabetes was studied. To obtain effective image segmentation, an adaptive local difference image is generated and relaxation process are applied to this difference Image. By the use of distance transformed data with segmented image, shape and location of feature regions were obtained. It was shown that the location and shape descriptions of Impaired blood vessel networks and retinal regions are can he utilized for the diagnosis of diabetes and other disease.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2013.05a
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• pp.1635-1636
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• 2013

• 대한핵의학회:학술대회논문집
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• 1988.05a
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• pp.132.2-133
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• 1988

• The Korean Journal of Nuclear Medicine
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• v.25 no.2
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• pp.200-206
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• 1991

Arterial fraction of total hepatic blood flow was estimated by a new method, slope method, on radionuclid angiogram using $^{99m}Tc-DISIDA$ and was compared with that from $^{99m}Tc-Phytate$ radionuclide angiogram. This study included 11 of normal subjects, 37 of intermediate group with various liver diseases, and 25 patients with liver cirrhosis. We analyzed the datas with slope method from radionuclide angiograms and the results were compared with hepatic arterial fractions from uptake method, introduced by Lee et al. at 1986. The hepatic arterial fractions from radionuclide angiograms using $^{99m}Tc-DISIDA$ and $^{99m}Tc-Phytate$ were $0.32{\pm}0.09\;and\;0.31{\pm}0.11$ respectively in normal subjects, and $0.75{\pm}0.18\;and\;0.77{\pm}0.21$ respectively in patients with liver cirrhosis. The hepatic arterial fractions by the slope method was well correlated with those of the uptake method on $^{99m}Tc-DISIDA$ scan. There was high correlation between the hepatic arterial fractions from $^{99m}Tc-DISIDA$ and $^{99m}Tc-Phytate$ scans. Hepatic arterial fraction estimated by the slope method is a useful index for the diagnosis of liver cirrhosis and the evaluation of status of portal hypertension.

• Journal of Trauma and Injury
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• v.28 no.3
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• pp.190-194
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• 2015

Blunt cerebrovascular injury is defined as a vertebral or carotid arterial structural wall injury resulting from nonpenetrating trauma. Complete traumatic internal carotid artery occlusion is very rare condition accounting for 0.08~0.4 0f all trauma patients and believed to be associated with the greatest risk of ischemic stroke reported in 50~90% in a few small series. A 55-year-male was admitted with drowsy mentality and severe headache after a fall down accident. Brain computed tomography showed a subdural hematoma at the both frontal area with a fracture of the occipital skull bone. Two days after admission, he suddenly complained with a right side hemiparesis of motor grade 2. Brain magnetic resonance diffusion demonstrated multiple high flow signal changes from the left frontal and parietal lesion. Computed tomographic angiogram (CTA) revealed absence of the left ICA flow. Trans femoral cerebral angiography (TFCA) showed complete occlusion of the left internal carotid artery (ICA) at ophthalmic segment in the left ICA angiogram and flows on the left whole hemispheric lesions through the anterior communicating artery in the right ICA angiogram. We decided to conduct close observations as a treatment for the patient because of acute subdural hematoma and sufficient contralateral cerebral flow by perfusion SPECT scan. Two weeks after the accident, he was treated with heparin anticoagulation within INR 2~4 ranges. He recovered as the motor grade 4 without another neurologic deficit after 3 months.

• Journal of Chest Surgery
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• v.37 no.8
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• pp.702-706
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• 2004

Pulmonary arteriovenous fistula is usually considered as a subset of congenital anomalies or acquired causes which can produce a variety of conditions such as dyspnea, cyanosis, and pulmonary vascular bruit. The diagnostic methods can be diverse such as arterial blood gas analysis (ABGA), chest X-ray, chest CT and pulmonary angiogram but the most accurate diagnostic modality is thought to be the pulmonary angiogram. The complications of this disease are a rupture that can cause hemothorax, brain abscess, and cardiovascular accident, and the treatment options are either segmental resection or therapeutic embolization. A twenty-six year old female developed sudden dyspnea and visited our emergency room. The patient was diagnosed as having pulmonary arteriovenous fistula (size; 4${\times}$4${\times}$3 cm) in the superior segment of the right lower lobe, evidenced by chest CT and pulmonary angiogram. Consequently, she underwent an emergency right lower lobectomy. We report this rare case of combined hemothorax that we have experienced, from diagnosis to treatment.

• Investigative Magnetic Resonance Imaging
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• v.5 no.1
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• pp.38-42
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• 2001

Dark band artifacts are often observed in angiograms of arteries obtained by 2D time-of-flight (TOF) angiography with saturation of veins by presaturation RF pulses. At some arteries the arterial blood velocity varies in a triphasic pattern during a cardiac cycle. The arterial blood, that is saturated by presaturation RF pulses in the saturation band, can flow back into the imaging slice during the retrograde flow phase of the triphasic variation. When such saturated retrograde flow occurs during the acquisition of the central part of the K space, a signal void can result in base images and consequently dark band artifacts can appear in angiograms. This phenomenon is experimentally demonstrated by varying the gap between the imaging slice and the saturation band. Furthermore, a new pulse sequence is proposed to eliminate the dark band artifacts by changing the profile of the saturation band front a rectangle to a ramp.

• The Journal of Korean Academic Society of Nursing Education
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• v.9 no.1
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• pp.115-125
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• 2003

This study was conducted to investigate whether a computer information offered in advance of the test would decrease anxiety degree in coronary angiogram subjects. The study design was a nonequivalent control group, none-synchronized design. The subjects of study were 53 patients who were admitted at C hospital in K city for coronary angiogram. The 53 subjects were assigned to experimental(25) and control(28) groups. The computer information set up by researcher was used as the experimental treatment and 10 minutes long. Spielberger's state anxiety scale translated by Kim and Shin(1978) and sphygmomanometer were used for data collection. The data were collected from July 1, 2000 to March 31, 2001, and analyzed by chi-square, paried t-test, t-test, ANCOVA, and Pearson's Correlation Coefficients using SPSS/PC+. The results of this study were summarized as follows : 1. The first hypothesis that 'post-test state anxiety score will be lower than pre-test state anxiety score in experimental group' was supported(t=2.40, p=.020). 2. The second hypothesis that 'post-test systole will be lower than pre-test systole in experimental group' was not supported(t=-.30, p=.765). 3. The third hypothesis that 'post-test Diastole will be lower than pre-test diastole in experimental group' was not supported'(t=-1.42, p=.161). 4. The fifth hypothesis that 'the experimental group who is given the computer information will be lower in state anxiety score than the control group who is not given the computer information' was supported(F=9.17, p=.004). 5. The sixth hypothesis that 'the experimental group who is given the computer information will be lower in systole than the control group who is not given the computer information' was supported (F=7.16, p=.010). 6. The seventh hypothesis that 'the experimental group who is given the computer information will be lower in diastole than the control group who is not given the computer information' was not supported'(F=.55, p=.462). 7. The eleventh hypothesis that 'the lower the post-test state anxiety, the lower the uneasiness score during the test' was not supported(r=-.013, p=.926). 8. The eighth hypothesis that 'the lower the post-test state anxiety, the lower the nervousness score during the test' was supported(r=.326, p=.017).