1.Evaluation of renal donors and recipients using intravenous digital subtraction angiography
Journal of the Korean Radiological Society 1986;22(2):229-237
Renal IV DSA was applied to evaluate 15 potential renal donors and 14 examinations of 12 renal allograftrecipients,. We evaluate the angiographic acute or chronic rejection, alteration of renal size aftertransplantation, excretion time of the contrst media and pre, post DSA serum creatinine level. DSA is a safe,easily performed, out patient procedure and useful in evaluation and indistinguishing status surgical anastomosis,intrarenal vasculatures, arterial excertion time and rejection phenomenon.
Angiography, Digital Subtraction
;
Creatinine
;
Humans
;
Tissue Donors
2.Digital subtraction angiography in cardiac disease
Journal of the Korean Radiological Society 1986;22(2):218-228
DSA was done in 133 examinations of 128 patients during 2 years consist of 9 examination of IV DSA and 124examination of selective cardiac DSA after cardiac catheterization. Open heart surgery was performed in 90patients and 12 patients showed discrepancy between pre-and post operative diagnosis, showing a total 86.7% ofdiagnostic accuracy with DSA. We experienced the significant reduction in dose of contrast media, 30-40% of doseof conventional cardiac heart disease. DSA is an accurate simple and safe method in evaluation of cardiac disases.
Angiography, Digital Subtraction
;
Cardiac Catheterization
;
Cardiac Catheters
;
Contrast Media
;
Diagnosis
;
Heart Diseases
;
Humans
;
Methods
;
Thoracic Surgery
3.Forensic application of radiology for individual identification in mass disaster.
Shin Mong KANG ; Hae Kyung LEE ; Deuk Lin CHOI ; Kui Hyang KWON ; Ki Jung KIM
Korean Journal of Legal Medicine 1992;16(1):7-15
No abstract available.
Disasters*
4.Artifacts by dental materials on magnetic resonance imaging.
Hyun Sook HONG ; Deuk Lin CHOI ; Ki Jung KIM ; Won Hyuck SUH
Journal of the Korean Radiological Society 1992;28(3):463-469
Magnetic resonance imaging(MRI)has proved to be a valuable method for evaluation of the head and neck. Unfortunately, metallic devices associated with certain dental fillings and applicances often cause variable artifacts that can obscure normal or pathologic conditions on MR and computed tomography. In this work, we assessed the MR appearance of dental prosthetic materials in vitro and in vivo including precious alloys. Nonprecions alloys, resin, amalgam and titanium alloy, For in vivo studies, these materials were placed in healthy volunteer's mouths and then images were assesed. Analyis of the appearance of shape and extent of artifact,and observed influence of these artifacts on the image interpretation at 0.2 Tesla permanent type MR scanner were valuated. Material used as temporary or permanent filling of crowns such as amalgam. precious alloy and, microfilled resin did not cause artifact on the image. The size of the artifact produced by the nonprecious alloys was influenced by the ferromagnetism of the object and the volume prosthesis, and was related to the scanning sequence. Nonprecious alloys produced minimal local signal distortions, where precious alloys, and dental resin had no effect on the MR image in vivo. These results were mainly from a low field strength MR scanner used in this study.
Alloys
;
Artifacts*
;
Crowns
;
Dental Materials*
;
Equidae
;
Head
;
In Vitro Techniques
;
Magnetic Resonance Imaging*
;
Magnets
;
Methods
;
Mouth
;
Neck
;
Prostheses and Implants
;
Resins, Synthetic
;
Silicone Elastomers
;
Titanium
5.Comparison of X ray YCUG with RI VCUG for Diagnosing VUR in Children.
Sung Jun KIM ; Hyun Sook HONG ; Deuk Lin CHOI ; Eun Mi KIM
Journal of the Korean Society of Pediatric Nephrology 1999;3(2):187-195
A case of malignant epithelial mesothelioma of the peritoneum diagnosed by fine needle aspiration cytology is described. The smear showed many individually scattered or clustered large round malignant epithelial cells intermingled with relatively small nonneoplastic mesothelial and mesenchymal cells. Papillary configurations with thick fibrous core were also seen. The malignant cells were virtually reminiscent of reactive mesothelial cells but they were larger in size and had more prominent nucleoli and more frequent binucleated or multinucleated cell formations than reactive mesothelial cells. The characteristic features of malignant cell of mesothelioma compared with the metastatic adenocarcinoma were relatively uniform cellular size, prominent round nucleoli, large round vesicular nuclei with finely granular chromatin pattern, smooth nuclear membrane, abundant glassy cytoplasm rather than bubbly mucin-containing cytoplasm and fuzzy cell border.
Adenocarcinoma
;
Biopsy, Fine-Needle
;
Child*
;
Chromatin
;
Cytoplasm
;
Epithelial Cells
;
Humans
;
Mesothelioma
;
Nuclear Envelope
;
Pancreas
;
Peritoneum
6.MR imaging of avacular necrosis of the femoral head.
Eun Wan CHOI ; Won Soo CHO ; Hyun Sook HONG ; Hae Kyung LE ; Deuk Lin CHOI ; Ki Jung KIM
Journal of the Korean Radiological Society 1993;29(5):1051-1056
We evalusted the magnetic resonance imaging (MRI) findings of the femoral heads in 20 normal and 45 abnormal patients. The bone marrow in the healthy adults consisted of a combination of hematopoietic and fatty marrow, which showed age-related dirtribation, that is the component of fatty marrow was increased and the marrow vascularity was dereased with age. Avascular necrosis (AVN) showed a decreased bone marrow signal within an normal appearing femoral head on T1 and T2-weighted images. In addition, we could see inhomogenous low signal intensity (31 cases), a ring of low intensity with central normal signal intensity (25cases), focal low signal intensity (12 cases), or a band of low signal intensity (4 cases). MRI findings were abnormal in 10 cases with normal radiographic findings as well as in all the cases with abnormal ones. In conclusion, MRI should be the choice of the imaging modality for the evaluation of early bone marrow chages of AVN.
Adult
;
Bone Marrow
;
Head*
;
Humans
;
Magnetic Resonance Imaging*
;
Necrosis*
7.MR Findings to Predict the Site of Dural Attachment in Meningiomas.
Ki Jung KIM ; Dae Ho KIM ; Deuk Lin CHOI ; Nam Seok LEE ; Yang Heui KIM ; Hyun Sook HONG
Journal of the Korean Radiological Society 1995;32(1):9-14
PURPOSE: To study the MR findings to predict the site of dural attachment in meningiomas. MATERIALS AND METHODS: We retrospectively reviewed MR findings of 23 patients with surgically confirmed meningiomas and analysed the characteristics of dural attachment site of meningiomas and tumor growing vector against dura. RESULTS: In the 10 cases that tumor had a single dural base, the dural base was tumor bed. in the 2 cases that tumor had more than two dural bases, wider, irregular and thicker enhancing dura was tumor bed. In the 7 of the 11 cases of diffuse dural bases with tumor, we could predict tumor bed considering the degree of compression to the brain parenchyma and the tumor growing vector. CONCLUSIONS: In the case of tumor having more than two surfaces contacting the dura or with narrow attachment site, it is possible to predict the site of dural attachment if we consider the characteristrics of dural attachment site and tumor growing vector against dura.
Brain
;
Humans
;
Meningioma*
;
Retrospective Studies
8.Percutaneous Recanalization for Refractory Dialysis-related Subclavian Vein Obstruction: A Case with Needle Puncture.
Dong Erk GOO ; Dae Ho KIM ; Deuk Lin CHOI
Journal of the Korean Radiological Society 2000;42(3):469-471
Chronic central venous occlusion presents a difficult management problem, particularly when the occlusion cannot be traversed with a guide wire, a step which is essential for endovascular treatment such as balloon angioplasty and stent placement. We describe a less invasive technique in which the venous occlusion is traversed with a Rosch-Uchida Transjugular Liver Access Set. This procedure may be useful in cases where the involved extremity must be preserved for hemodialysis and where subclavian vein occlusion is refractory to traditional revascularization methods.
Angioplasty, Balloon
;
Dialysis
;
Extremities
;
Liver
;
Needles*
;
Punctures*
;
Renal Dialysis
;
Stents
;
Subclavian Vein*
;
Veins
9.Bone Changes in Phenylketonuria.
Hyun Sook HONG ; Hae Kyung LEE ; Kui Hyang KWON ; Deuk Lin CHOI ; Dong Hwan LEE
Journal of the Korean Radiological Society 1998;38(2):367-370
PURPOSE: While treating 14 phenylketonuria(PKU) patients, we evaluated bone density, changes in bone age, andbony changes such as spiculation or metaphyseal widening. MATERIALS AND METHODS: A total of 14 PKU patients agedbetween 1 month and 14 years(mean, 6.4 years) were under dietary treatment. Eight and eleven patients underwentradiography of the left hand and wrist and bone densitometry(BMD) of the lumbar spine, respectively. The resultswere reviewed with regard to abnormal bony changes, delayed bone age, and osteopenia. Patients were assigned toeither the early or late treatment group, depending on whether or not dietary therapy was started before 3 monthsof age. Those in whom a blood phenylalanine level of under 10 mg/dl was maintained were assigned to the 'goodcontrol' group; others were classified as 'variable control'. The findings of radiographs of the left hand andlumbar BMD were evaluated in relation to the time of dietary therapy, and adequacy of treatment. RESULTS: Onlumbar BMD, four of 11 patients (36%) showed reduced bone density of more than 1 S.D. None of the 11 who underwentradiography of the left hand showed bony abnormalities such as spiculation or metaphyseal widening. In four of the11, bone age was less than chronological age by at least one year. According to Fisher's exact test there was norelation between delayed bone age , osteoporosis and the time and adequacy of dietary therapy (p >0.05). CONCLUSION: None of the 14 PKU patients who underwent dietary therapy had bony abnormalities such as spiculationor metaphyseal widening. In four of the 11, bone age was at least one year less than chronological age, and onlumbar BMD, osteoporosis was seen. For the evaluation of bone change in PKU patients, plain radiography and BMDare thus complementary.
Bone Density
;
Bone Diseases, Metabolic
;
Hand
;
Humans
;
Metabolism
;
Osteoporosis
;
Phenylalanine
;
Phenylketonurias*
;
Radiography
;
Spine
;
Wrist
10.Observation of 99mTc-MDP-bone scan findings in traumatic vertebral fractures
Soon Im HAN ; Pyo Nyun KIM ; Hae Kyung LEE ; Moo Chan CHUNG ; Deuk Lin CHOI ; Ki Jung KIM
Journal of the Korean Radiological Society 1984;20(1):158-165
Bone scan using 99m Tc-MDP is the most accurate and reliable method for the early detection of fracture, andgive the most accurate in formation about the healing process of fractured bone. Recent days, the medicolegalproblem about the injured time is frequently provoked in vertebral fracture patient by trauma. The authorsanalyzed the bone scan of vertebral fracture patients from March to Dec. 1983. The authors obtained results asfollows: 1. The minimum time for a fracture to return to normal on a bone scan was 4 month in cervical spine. 2.It was 12 month in thoracic spine. 3. It was 6 month in lumbar spine. 4. Surrounding soft tissue injury was healedwithin 10 days after trauma in our cases. 5. Focal hot uptake is persisted in case of callus deposition on plainfilm, although very small in amount. 6. Healing time is delayed in case of severely compressed vertebral body,belowed the half than normal height. 7. With bone scan it is possible to differentiate the fresh fracture from oldhealed, impossible by plain film. 8. Healing time is delayed in old age.
Bony Callus
;
Humans
;
Methods
;
Soft Tissue Injuries
;
Spine