1.Computed tomographic findings of cervical tuberculous lymphadenitis.
Suk Hyon KIM ; Yul LEE ; Ki Soon PARK ; Si Tae RYU ; Soo Young CHUNG
Journal of the Korean Radiological Society 1992;28(4):531-535
Computed tomographic findings of 24 cases of cervical tuberculous lymphadenitis were retrospectively analyzed. We classified the CT findings as 4 types: type 1(homogeneous soft tissue density mass), type 2(central low density with peripheral rim enhancement and with preservation of surrounding fat plane), type 3(central low density with peripheral rim enhancement and with obliteration of surrounding fat plane), type 4(large confluent low density mass, so called "cold abscess") As a result, there were 2 cases(8.3%) of type 1, 7 cases(29.2%) of type 2, 9 cases(37.5%) of type 3, 3 cases(12.5%) of type 4, 1 cases(4.2%) of type 1 combined with type 3, and 2 cases(8.3%) of type 2 combined with type 4. So 22 cases(91.7%) revealed central low density and peripheral rim enhancement, which suggest necrosis. The maximum thickness of enhancing rim was above 2mm in all of 64 definable necrotic lymph nodes and above 4mm in 42(65.5%) lymph nodes, suggesting that the wall of necrotic tuberculous lymphadenitis tends to be thick. We conclude that CT is useful not only for the diagnosis but also for the evaluation of the extent and the status of cervical tuberculous lymphadenitis.
Diagnosis
;
Lymph Nodes
;
Necrosis
;
Retrospective Studies
;
Tuberculosis, Lymph Node*
2.Normal Anatomy of the Anal Wall and Perianal Spaces: An EUS, MRI and Cadaveric Correlative Study.
Sang Hoon BAE ; Heung Sik KANG ; Ki Soon PARK ; Yul LEE ; Soo Young CHUNG ; Sie Tae RYU
Journal of the Korean Radiological Society 1994;31(1):109-114
PURPOSE: To understand the normal endosonographic anatomy of the perianal spaces, and to evaluate the diagnostic efficacy and limitation of endorectal sonography(EUS), correlative study with MRI, cadaveric sectional image and cadaveric MRI were performed. MATERIALS AND METHODS: EUS images of the normal 6 perianal spaces (pelvirectal, ischiorectal, intersphincteric, subcutaneous, central, submucous space) which were bounded by internal and external anal sphincters, rectal wall and levator ani muscle were correlated with MRI in 10 normal persons, cadaveric sectional images and cadaveric MRI in 2 cadavers. RESULTS: Pelvirectal space located superior to levator ani muscle could be demonstrable only on anterior wall scan but could not be visualized on lateral or posterior wall scan on EUS. Five perianal spaces located inferior to levator ani muscle were well seen on anterior, lateral, and posterior wall EUS. MRI was superior to EUS in the evaluation of pelvirectal and ischiorectal spaces but equal or inferior to EUS in the evaluation of intersphincteric, subcutaneous, central and submucous spaces. CONCLUSION: EUS was valuable in the evaluation of perianal spaces inferior to levator ani muscle but was limited in the evaluation of perianal spaces superior to levator ani muscle.
Anal Canal
;
Cadaver*
;
Humans
;
Magnetic Resonance Imaging*
3.A Comparative Study About The Natural Course Of Idiopathic Frozen Shoulder And The Effectiveness Of Conservative Treatment.
Suk Kee TAE ; Young Bok JUNG ; Jung Il LIM ; Tae Yul RYU ; Jung Nam HAN
The Journal of the Korean Orthopaedic Association 2000;35(3):431-436
PURPOSE: The aim of this study was to investigate about the natural course of idiopathic frozen shoulder and the efficacy of conservative treatment. MATERIALS AND METHODS: Twenty-five cases of unilateral frozen shoulder (study group) treated conservatively by intra-articular steroid injection and staged passive stretching were prospectively followed for average 9.1 months, the outcome was assessed in terms of motion range and the function score derived from patients' self-evaluation, and timing of improvement was searched. Compared with study group, 20 patients (control group) , who were diagnosed as idiopathic frozen shoulder but didn't undertake specific treatment, were checked at average 40 months. RESULTS: Eighteen cases (72%) of the study group had residual symptom, which was mild in most cases. Range of motion less than 80% of normal side was noted in 2 cases. Intra-articular steroid injection was effective for pain relief in 75%. In the control group, one case showed decreased motion and 2 case had mild pain. Comparing with the control group, the study group was improved significantly & statistically faster. CONCLUSION: It is construed that the long term result of idiopathic frozen shoulder is excellent and the combined effect of steroid injection and stretching shortens the duration of disease. Operative treatment for idiopathic frozen shoulder, if indicated, needs to be decided after long term follow-up.
Bursitis*
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Diagnostic Self Evaluation
;
Follow-Up Studies
;
Humans
;
Muscle Stretching Exercises
;
Prospective Studies
;
Range of Motion, Articular
;
Shoulder
4.Accuracy of the Kane Formula for Intraocular Lens Power Calculation in Comparison with Existing Formulas: A Retrospective Review
Soyoung RYU ; Ikhyun JUN ; Tae-im KIM ; Eung Kweon KIM ; Kyoung Yul SEO
Yonsei Medical Journal 2021;62(12):1117-1124
Purpose:
To evaluate the accuracy of the Kane formula for intraocular lens (IOL) power calculation in comparison with existing formulas by incorporating optional variables into calculation.
Materials and Methods:
This retrospective review consisted of 78 eyes of patients who had undergone uneventful phacoemulsification with intraocular implantation at Severance Hospital in Seoul, Korea between February 2020 and January 2021. The Kane formula was compared with six of the existing IOL formulas (SRK/T, Hoffer-Q, Haigis, Holladay1, Holladay2, Barrett Universal II) based on the mean absolute error (MAE), median absolute error (MedAE), and the percentages of eyes within prediction errors of ±0.25D, ±0.50D, and ±1.00D.
Results:
The Barrett Universal II formula demonstrated the lowest MAEs (0.26±0.17D), MedAEs (0.28D), and percentage of eyes within prediction errors of ±0.25D, ± 0.50D, and ±1.00D, although there was no statistically significant difference between Barrett Universal II-SRK/T (p=0.06), and Barrett Universal II-Kane formula (p<0.51). Following the Barrett Universal II formula, the Kane formula demonstrated the second most accurate formula with MAEs (0.30±0.19D) and MedAEs (0.28D). However, no statistical difference was shown between Kane-Barrett Universal II (p=0.51) and Kane-SRK/T (p=0.14).
Conclusion
Although slightly better refractory outcome was noted in the Barrett Universal II formula, the performance of the Kane formula in refractive prediction was comparable in IOL power calculation, marking its superiority over many conventional IOL formulas, such as HofferQ, Haigis, Holladay1, and Holladay2.
5.Anterior Ocular Biometrics Using Placido-scanning-slit System, Rotating Scheimpflug Tomography, and Swept-source Optical Coherence Tomography
Soyoung RYU ; Sook Hyun YOON ; Ikhyun JUN ; Kyoung Yul SEO ; Eung Kweon KIM ; Tae-im KIM
Korean Journal of Ophthalmology 2022;36(3):264-273
Purpose:
To compare anterior biometry measurements using placido-scanning-slit topography, rotating Scheimpflug tomography, and swept-source optical coherence tomography.
Methods:
A retrospective review consisted of 80 eyes of 49 participants who underwent anterior chamber depth (ACD), central corneal thickness (CCT), and keratometry examination on the same day. We used placido-scanning-slit topography (ORBscan II), rotating Scheimpflug tomography (Pentacam HR), and swept-source optical coherence tomography (CASIA SS1000). The intraclass correlation coefficients and Bland-Altman plots were used to evaluate the agreement and differences between measurements.
Results:
The mean ACD values were 2.88 ± 0.43, 2.82 ± 0.50, and 2.68 ± 0.44 mm; and the mean CCT values were 536.96 ± 31.19, 543.79 ± 31.04, and 561.41 ± 32.60 μm; and the mean keratometry (Km) were 43.81 ± 1.69, 43.81 ± 1.77, and 44.65 ± 1.95 diopters; as measured by CASIA SS-1000, Pentacam HR, and ORBscan II, respectively. Among the three devices, ACD was deepest to shallowest in the order of CASIA SS-1000, Pentacam HR, and ORBscan II (p < 0.05). The CCT was thickest to thinnest in the order of ORBscan II, Pentacam HR, and CASIA SS-1000 (p < 0.05). No significant differences in Km values were examined between CASIA SS-1000 and Pentacam HR, whereas ORBscan II overestimated Km with a statistically significant difference compared to the other two devices.
Conclusions
High level of agreement was found between CASIA SS-1000 and Pentacam HR for anterior parameters, including ACD, CCT, and Km, suggesting interchangeability. However, ORBscan II measurements differed considerably with the measurements obtained from the other two devices; therefore, it should not be used interchangeably. However, further studies with repeatability test should be considered in order to elucidate the reliability of each device.
6.Dopamine Transporter Density Assessed with 123IIPT SPECT Before and After Risperidone Treatment in Children with Tourette's Disorder.
Young Hoon RYU ; Tae Hoon KIM ; Won Gee RYU ; Se Young PARK ; Dae Yoon CHI ; Tae Hyun CHOI ; Kyung Yul LEE ; Keun Ah CHEON ; Mijin YUN ; Jai Keun KIM ; Jong Doo LEE
Korean Journal of Nuclear Medicine 2004;38(1):41-51
PURPOSE: Tourette's disorder (TD), which is characterized by multiple waxing and waning motor tics and one or more vocal tics, is known to be associated with abnormalities in the dopaminergic system. To testify our hypothesis that risperidone would improve tic symptoms of TD patients through the change of the dopaminergic system, we measured the dopamine transporter (DAT) densities between drug-naive children with TD and normal children, and investigated the DAT density before and after treatment with risperidone in drug-naive children with TD, using iodine-123 labelled N- (3-iodopropen-2-yl) -2beta-carbomethoxy -3beta- (4-chlorophenyl) tropane ([123I]IPT) single photon emission computed tomography (SPECT). MATERIALS AND METHODS: [123I]IPT SPECT imaging and Yale Global Tic Severity Scale-Korean version (YGTSS-K) for assessing the tic symptom severity were carried out before and after treatment with risperidone for 8 weeks in nine drug-naive children with TD. Eleven normal children also underwent SPECT imaging 2 hours after an intravenous administration of [123I]IPT. RESULTS: Drug-naive children with TD had a significantly greater increase in the specific/nonspecific DAT binding ratio of both basal ganglia compared with the normal children. However, no significant difference in the specific/nonspecific DAT binding ratio of the basal ganglia before and after treatment with risperidone in children with TD was found, although tic symptoms were significantly improved with risperidone. CONCLUSION: These findings suggest that DAT densities are directly associated with the pathophysiology of TD, however, that the effect of risperidone on tic symptoms in children with TD is not attributed to the change of dopaminergic system.
Administration, Intravenous
;
Basal Ganglia
;
Child*
;
Dopamine Plasma Membrane Transport Proteins*
;
Dopamine*
;
Humans
;
Risperidone*
;
Tics
;
Tomography, Emission-Computed, Single-Photon*
;
Tourette Syndrome*
7.Factors Affecting Accurate Quantitation of Proteinuria Using Protein/Creatinine Ratio in Random Urine Specimen.
Ho Yung LEE ; Tae Hyeon YOO ; Hyun Jung ROH ; Dong Yul RYU ; Jae Ha HWANG ; Hyun Yong SONG ; Sug Kyun SHIN ; Hyun Jin NOH ; Shin Wook KANG ; Kyu Hun CHOI ; Sung Kyu HA ; Dae Suk HAN
Korean Journal of Nephrology 2000;19(1):64-69
It's well known that protein/creatinine ratio(P/C ratio) in random urine samples reflects 24-hour urine protein. However, the factors affecting accurate quantitation of proteinuria using random urine P/C ratio are not fully evaluated. The aim of this study is to evaluate factors affecting accurate quantitaion of proteinuria using random urine P/C ratio. 118 patients admitted in Yonsei university medical center during June 1998 and Dec. 1998 were assessed for the measurement of random urine protein/creatinine ratio from second voided urine. 118 patients(mean age 41.5year, male: female 2.36: 1) had mean creati-nine level 1.83+/-1.78mg/dL, 24-hour pmteinuria 6.06+/-7.64g/day and P/C ratio 4.80+/-4.48, All the patiient.s were divided into A, B, C, I, II, K, IV according to serum creatinine level and 24-hour proteinurim amount. The correlation coefficient(R value) between proteinuria and P/C ratio are shown that in all pa- tients is 0.875, group A(Cr*
8.A Case of Paraplegia Following Endovascular Stent Repair of Descending Thoracic Aortic Aneurysm.
Min Young LEE ; Myung Goo LEE ; Kyung Soon HONG ; Chang Yul LEE ; Kyu Tae PARK ; Chan Woo LEE ; Myeong Shin RYU ; Young Muk KIM ; Dae Hyun HWANG
Korean Circulation Journal 2011;41(3):160-163
Paraplegia secondary to spinal cord infarction is a recognized complication of open thoracic and thoracoabdominal aortic aneurysm (TAA) repair. TAA is serious and unpredictable condition. Therefore, aortic repair requires thorough information on managing the potential complications will facilitate improve control the problem. We report the symptoms and management of paraplegia in a patient who underwent stent insertion as TAA.
Aortic Aneurysm, Abdominal
;
Aortic Aneurysm, Thoracic
;
Humans
;
Infarction
;
Paraplegia
;
Spinal Cord
;
Spinal Cord Ischemia
;
Stents