7.Diagnostic Performance Using a Combination of MRI Findings for Evaluating Cognitive Decline
Jin Young BYUN ; Min Kyoung LEE ; So Lyung JUNG
Journal of the Korean Society of Radiology 2024;85(1):184-196
Purpose:
We investigated potentially promising imaging findings and their combinations in the evaluation of cognitive decline.
Materials and Methods:
This retrospective study included 138 patients with subjective cognitive impairments, who underwent brain MRI. We classified the same group of patients into Alzheimer’s disease (AD) and non-AD groups, based on the neuropsychiatric evaluation. We analyzed imaging findings, including white matter hyperintensity (WMH) and cerebral microbleeds (CMBs), using the Kruskal–Wallis test for group comparison, and receiver operating characteristic (ROC) curve analysis for assessing the diagnostic performance of imaging findings.
Results:
CMBs in the lobar or deep locations demonstrated higher prevalence in the patients with AD compared to those in the non-AD group. The presence of lobar CMBs combined with periventricular WMH (area under the ROC curve [AUC] = 0.702 [95% confidence interval: 0.599–0.806], p < 0.001) showed the highest performance in differentiation of AD from non-AD group.
Conclusion
Combinations of imaging findings can serve as useful additive diagnostic tools in the assessment of cognitive decline.
8.Diagnostic Performance Using a Combination of MRI Findings for Evaluating Cognitive Decline
Jin Young BYUN ; Min Kyoung LEE ; So Lyung JUNG
Journal of the Korean Society of Radiology 2024;85(1):184-196
Purpose:
We investigated potentially promising imaging findings and their combinations in the evaluation of cognitive decline.
Materials and Methods:
This retrospective study included 138 patients with subjective cognitive impairments, who underwent brain MRI. We classified the same group of patients into Alzheimer’s disease (AD) and non-AD groups, based on the neuropsychiatric evaluation. We analyzed imaging findings, including white matter hyperintensity (WMH) and cerebral microbleeds (CMBs), using the Kruskal–Wallis test for group comparison, and receiver operating characteristic (ROC) curve analysis for assessing the diagnostic performance of imaging findings.
Results:
CMBs in the lobar or deep locations demonstrated higher prevalence in the patients with AD compared to those in the non-AD group. The presence of lobar CMBs combined with periventricular WMH (area under the ROC curve [AUC] = 0.702 [95% confidence interval: 0.599–0.806], p < 0.001) showed the highest performance in differentiation of AD from non-AD group.
Conclusion
Combinations of imaging findings can serve as useful additive diagnostic tools in the assessment of cognitive decline.
9.Diagnostic Performance Using a Combination of MRI Findings for Evaluating Cognitive Decline
Jin Young BYUN ; Min Kyoung LEE ; So Lyung JUNG
Journal of the Korean Society of Radiology 2024;85(1):184-196
Purpose:
We investigated potentially promising imaging findings and their combinations in the evaluation of cognitive decline.
Materials and Methods:
This retrospective study included 138 patients with subjective cognitive impairments, who underwent brain MRI. We classified the same group of patients into Alzheimer’s disease (AD) and non-AD groups, based on the neuropsychiatric evaluation. We analyzed imaging findings, including white matter hyperintensity (WMH) and cerebral microbleeds (CMBs), using the Kruskal–Wallis test for group comparison, and receiver operating characteristic (ROC) curve analysis for assessing the diagnostic performance of imaging findings.
Results:
CMBs in the lobar or deep locations demonstrated higher prevalence in the patients with AD compared to those in the non-AD group. The presence of lobar CMBs combined with periventricular WMH (area under the ROC curve [AUC] = 0.702 [95% confidence interval: 0.599–0.806], p < 0.001) showed the highest performance in differentiation of AD from non-AD group.
Conclusion
Combinations of imaging findings can serve as useful additive diagnostic tools in the assessment of cognitive decline.
10.Development of an Instrument for Slit-lamp Examination of Donor Corneas in Preservation Medium
Ga Hee NAM ; Da Ran KIM ; Young Chae YOON ; Soon Won YANG ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Hyun Soo LEE ; So Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2024;65(2):108-116
Purpose:
To evaluate the effectiveness of an instrument devised for slit-lamp examination of donor corneas suspended in preservation medium.
Methods:
The study examined two donor corneas received at Yeouido St. Mary's Hospital in February 2023 and March 2023. The instrument has three main components: a plastic holder to hold the preservation medium bottle, a cube with a mirror for reflecting the slit beam, and a stand to attach the device to the slit-lamp. Using the instrument, the donor corneas were examined via slit-lamp: microscopy with the endothelium facing upward and downward. Specular microscopy and anterior segment optical coherence tomography (OCT) were also performed on the preserved donor corneas.
Results:
Slit-lamp examination of donor corneas in preservation medium using the instrument showed overall corneal buttoning and optical sections of the donor cornea. Using specular reflection and retroillumination, the endothelial layer was partially visible. However, specular microscopy and anterior segment OCT could not examine the donor cornea in preservation medium using the instrument.
Conclusions
The devised instrument facilitates slit-lamp examination of donor corneas in preservation medium, enabling a qualitative assessment of donor corneas before corneal transplantation surgery.

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