1.Use of MAVRIC-SL for metal artifact reduction in postoperative canine stifle MRI
Sojin KIM ; Youngmin KIM ; Jae-Pung HAN ; Sunghoon JEON ; Gonhyung KIM ; Sang-Hwan HYUN ; Dongwoo CHANG ; Namsoon LEE
Journal of Veterinary Science 2026;27(2):e21-
Objective:
This study aimed to determine whether a multiacquisition variable-resonance image combination-selective (MAVRIC-SL) sequence, which reduces susceptibility artifacts, is useful for postoperative evaluation.
Methods:
MRI was performed on four dogs that underwent CCLR correction using metallic implants. Imaging was performed with MAVRIC-SL and two-dimensional fast spin echo (2D-FSE) sequences, including proton density (PD), PD fat-suppressed (F/S), and T2-weighted F/S. The artifact area for each sequence was quantitatively analyzed. A four-level qualitative image analysis was performed to assess image artifacts, cartilage delineation, and visualization of the cranial cruciate ligament and bone.
Results:
The artifact area was significantly reduced with MAVRIC-SL than with 2D-FSE, regardless of the metal materials used. In addition, the amount of artifact, cartilage delineation, and visualization of the bone were significantly improved with MAVRIC-SL compared with 2D-FSE.
Conclusions
and Relevance: In this preliminary study, the MAVRIC-SL sequence improves postoperative MRI evaluation by reducing susceptibility artifacts in dogs with CCLR treated with metallic implants.
7.Myelopathy secondary to generalized thoracic caudal articular process aplasia in a non-brachycephalic breed dog: a case report
Youngmin KIM ; Byoungho AN ; Gonhyung KIM ; Dongwoo CHANG ; Namsoon LEE
Korean Journal of Veterinary Research 2025;65(4):e25-
A 5-month-old mixed-breed dog was presented with progressive ambulatory paraparesis. Neurological examination was consistent with thoracolumbar myelopathy. Magnetic resonance imaging (MRI) revealed a spinal (sub)arachnoid diverticulum (SAD) at T8–T9 with spinal cord compression associated with central canal dilation and intramedullary edema. Computed tomography (CT) showed generalized caudal articular process dysplasia (CAPD) from T2 to T9 vertebras. Considering diagnostic imaging results, symptoms were strongly suspected to be due to spinal cord compression associated with CAPD-induced SAD. Surgery was performed and cystic structure was detached. One month after the surgery, no progression of clinical symptoms was observed. To the best of our knowledge, this is the first reported case of SAD causing thoracolumbar myelopathy in a non-brachycephalic dog with generalized CAPD. These findings highlight the potential role of CAPD as a contributing factor to SAD formation. A combination of CT and MRI is recommended for thorough evaluation of vertebral structures and alignment in similar cases.
8.First Nationwide Mpox Vaccination Program in the Republic of Korea:Implications for an Enhanced Public Health Response
Seunghyun Lewis KWON ; Minju SONG ; Wonkyung LEE ; Jeeyeon SHIN ; Su-Yeon LEE ; Sang-Gu YEO ; Minjeong KIM ; Sanggyun JEONG ; Joonku PARK ; Dongwoo LEE ; Sookyoung LIM
Journal of Korean Medical Science 2024;39(32):e235-
On May 1, 2024, the Republic of Korea lifted the infectious disease crisis alert for mpox, almost two years after the first case was reported. The Korea Disease Control and Prevention Agency (KDCA) has led the response, which included diagnosis, epidemiological investigations, treatment, and vaccination. This article particularly reviews the vaccination strategy implemented and proposes suggestions for enhancing future response efforts. Initially, the KDCA recommended pre-exposure prophylaxis for high-risk groups, later expanding to include broader demographics as domestic cases rose. By April 2024, a total of 6,863 individuals had received their first vaccine dose, with 3,875 completing the second dose of third-generation vaccines. Strategies to improve future responses include addressing stigma, securing nationally representative safety data, and conducting vaccine cost-benefit analyses.These measures will help ensure a robust and effective response to future outbreaks.
9.Recent Update on PET/CT Radiotracers for Imaging Cerebral Glioma
Dongwoo KIM ; Suk‑Hyun LEE ; Hee Sung HWANG ; Sun Jung KIM ; Mijin YUN
Nuclear Medicine and Molecular Imaging 2024;58(4):237-245
Positron emission tomography/computed tomography (PET/CT) has dramatically altered the landscape of noninvasive glioma evaluation, offering complementary insights to those gained through magnetic resonance imaging (MRI). PET/CT scans enable a multifaceted analysis of glioma biology, supporting clinical applications from grading and differential diagnosis to mapping the full extent of tumors and planning subsequent treatments and evaluations. With a broad array of specialized radiotracers, researchers and clinicians can now probe various biological characteristics of gliomas, such as glucose utilization, cellular proliferation, oxygen deficiency, amino acid trafficking, and reactive astrogliosis. This review aims to provide a recent update on the application of versatile PET/CT radiotracers in glioma research and clinical practice.
10.Psychotic Disorders and the Risk of Type 2 Diabetes Mellitus, Atherosclerotic Cardiovascular Diseases, and All-Cause Mortality: A Population-Based Matched Cohort Study
You-Bin LEE ; Hyewon KIM ; Jungkuk LEE ; Dongwoo KANG ; Gyuri KIM ; Sang-Man JIN ; Jae Hyeon KIM ; Hong Jin JEON ; Kyu Yeon HUR
Diabetes & Metabolism Journal 2024;48(1):122-133
Background:
The effects of psychotic disorders on cardiometabolic diseases and premature death need to be determined in Asian populations.
Methods:
In this population-based matched cohort study, the Korean National Health Insurance Service database (2002 to 2018) was used. The risk of type 2 diabetes mellitus (T2DM), acute myocardial infarction (AMI), ischemic stroke, composite of all cardiometabolic diseases, and all-cause death during follow-up was compared between individuals with psychotic disorders treated with antipsychotics (n=48,162) and 1:1 matched controls without psychiatric disorders among adults without cardiometabolic diseases before or within 3 months after baseline.
Results:
In this cohort, 53,683 composite cases of all cardiometabolic diseases (during median 7.38 years), 899 AMI, and 1,216 ischemic stroke cases (during median 14.14 years), 7,686 T2DM cases (during median 13.26 years), and 7,092 deaths (during median 14.23 years) occurred. The risk of all outcomes was higher in subjects with psychotic disorders than matched controls (adjusted hazard ratios [95% confidence intervals]: 1.522 [1.446 to 1.602] for T2DM; 1.455 [1.251 to 1.693] for AMI; 1.568 [1.373 to 1.790] for ischemic stroke; 1.595 [1.565 to 1.626] for composite of all cardiometabolic diseases; and 2.747 [2.599 to 2.904] for all-cause mortality) during follow-up. Similar patterns of associations were maintained in subgroup analyses but more prominent in younger individuals (P for interaction <0.0001) when categorized as those aged 18–39, 40–64, or ≥65 years.
Conclusion
Patients with psychotic disorders treated with antipsychotics were associated with increased risk of premature allcause mortality and cardiometabolic outcomes in an Asian population. This relationship was more pronounced in younger individuals, especially aged 18 to 39 years.

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