The Different Associations of White Matter Hyperintensities With Severity of Dementia and Cognitive Impairment According to the Distance From the Lateral Ventricular Surface in Patients With Alzheimer's Disease.

Objective: White matter hyperintensities (WMH) are common among the elderly. Although WMH play a key role in lowering the threshold for the clinical expression of dementia in Alzheimer's disease (AD)-related pathology, the clinical significance of their location is not fully understood. This study aimed to investigate the association between WMH and cognitive function according to the location of WMH in AD.

[Neuroimaging Characteristics of Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL) in Korean Based on Jeju Cohort: A Pictorial Essay].

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a hereditary small artery vasculopathy caused by mutations in the gene on chromosome 19. Jeju Island has the highest reported prevalence of CADASIL patients in the world. Even though most studies on the neuroimaging characteristics of CADASIL have focused on Western populations, there are notable differences in Korean CADASIL patients compared to those in Western countries, which may impact their clinical manifestations and prognosis.

2021 Korean Thyroid Imaging Reporting and Data System and Imaging-Based Management of Thyroid Nodules: Korean Society of Thyroid Radiology Consensus Statement and Recommendations.

Incidental thyroid nodules are commonly detected on ultrasonography (US). This has contributed to the rapidly rising incidence of low-risk papillary thyroid carcinoma over the last 20 years. The appropriate diagnosis and management of these patients is based on the risk factors related to the patients as well as the thyroid nodules.

The Association of White Matter Hyperintensities with Frailty in Patients with Very Mild to Moderate Alzheimer's Disease.

Background: Frailty, one of serious global health problems in the elderly, is a growing concern in patients with Alzheimer's disease (AD) because of its high prevalence in AD and its impact on the prognosis.

Objective: To investigate the quantitative association between white matter hyperintensities (WMH) and frailty in AD.

Methods: A total of 144 outpatients were included.

Apolipoprotein E ε4 Is Associated With the Development of Incident Dementia in Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy Patients With p.Arg544Cys Mutation.

Background And Purpose: To identify clinical, laboratory, and magnetic resonance imaging (MRI) features in predicting incident stroke and dementia in Korean patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).

Materials And Methods: We enrolled 87 Korean CADASIL patients who had undergone baseline clinical, laboratory, and MRI examinations between March 2012 and February 2015. The primary outcome of this study is the occurrence of stroke and dementia during the study period.

Cerebral Microbleeds, Hypertension, and Intracerebral Hemorrhage in Cerebral Autosomal-Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy.

Background: Cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common genetic cause of stroke. In addition to ischemic stroke, CADASIL predisposes to development of cerebral microbleeds (CMB). CMB and hypertension are known to be associated with intracerebral hemorrhage (ICH).

Effect of Double Screw on Abutment Screw Loosening in Single-Implant Prostheses.

Purpose: This study was conducted to assess the effect of using a double screw on the prevention of abutment screw loosening.

Materials And Methods: Internal connected abutment with a single screw (IS), internal connected abutment with a double screw (ID), external connected abutment with a single screw (ES), and external connected abutment with a double screw (ED) groups were prepared (n = 10 in each group). After 50,000 loading cycles, postload removal torque loss (RTL) percentage was measured.

Phenotypic Features of Cerebral Autosomal-Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy Subjects with R544C Mutation.

Background And Purpose: Cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most-common single gene disorder of cerebral small vessel disease. There is no definite evidence of genotype-phenotype correlation in CADASIL. However, recent studies have shown the unique phenotypic feature of NOTCH3 R544C mutation.

Blood loss after navigation-assisted minimally invasive total knee arthroplasty.

The following study evaluated blood loss in patients undergoing navigation-assisted minimally invasive total knee arthroplasty. The study included 100 patients divided into two groups. Group A consisted of patients with an immediate drain release, and group B consisted of patients with a 1-hour delayed drain release after surgery.

Organized hematoma of the maxillary sinus: CT findings.

Objective: Organized hematoma of the maxillary sinus is rare. It occurs by organization of the hematoma in an unaerated maxillary sinus. The purpose of this study was to evaluate the CT features of this lesion.

Ultrasonographic findings of a newly detected nodule on the thyroid bed in postoperative patients for thyroid carcinoma: correlation with the results of ultrasonography-guided fine-needle aspiration biopsy.

We evaluated the ultrasonographic findings and performed ultrasonography-guided fine-needle aspiration biopsy of a newly detected nodule in the thyroid bed of 38 patients with postoperative thyroid carcinoma. Detection of a marginal irregularity, microcalcification, or a shape not parallel to the surrounding tissue plane might allow the identification of recurrent thyroid carcinoma from other benign pathologies mimicking local tumor recurrence.

Major depressive disorder with anger attacks and subcortical MRI white matter hyperintensities.

Previous reports of increased rates of cardiovascular risk factors in major depressive disorder (MDD) with anger attacks led the authors to hypothesize that MDD with anger attacks may be associated with brain vascular changes (magnetic resonance imaging white matter hyperintensities [WMHs]). Sixty-five subjects meeting DSM-III-R criteria for major depressive disorder were administered brain magnetic resonance imaging scans at 1.5T to detect T2 WMH.

Neuroimaging strategies for three types of Horner syndrome with emphasis on anatomic location.

Objective: The purposes of this study were to review the anatomy of the oculosympathetic pathway, to describe the clinical characteristics of the three types of Horner syndrome, and to illustrate underlying pathologic features with an emphasis on neuroimaging strategies based on three symptom complexes.

Conclusion: Horner syndrome results from interruption of the oculosympathetic pathway and is usually associated with unique clinical features classified into central, preganglionic, and postganglionic types according to the anatomic location of the underlying pathologic process.

Clinical usefulness of multidetector CT fistulography of branchial cleft fistula.

We report three cases of branchial cleft anomalies demonstrated by multidetector computed tomography (MDCT) fistulography. Multiplanar reformatted images using MDCT were excellent in delineating the whole fistulous tract and its surrounding structures. MDCT fistulography was very helpful in the diagnosis and surgical planning for sinus and fistula of branchial cleft anomalies.

Discal cyst of the lumbar spine: MR imaging features.

We describe MR imaging features of discal cyst of the lumbar spine in nine patients who presented with low back pain and leg pain. Discal cyst of the lumbar spine has characteristic MR imaging features different from other epidural cysts: a ventrolateral extradural cyst attached to a herniated lumbar disc, consisting of a thick fibrous capsule without disc material, and having occasional extension into the lateral recess with rim enhancement on contrast-enhanced MR imaging.

Brain white-matter hyperintensities and treatment outcome in major depressive disorder.

Background: An increased incidence of brain white-matter hyperintensities has been described in major depressive disorder, butthe impact of such hyperintensities on treatment outcome is still controversial.

Aims: To investigate the relationship of brain white-matter hyperintensities with cardiovascular risk factors and with treatment outcome in younger people with major depressive disorder.

Method: We assessed brain white-matter hyperintensities and cardiovascular risk factors in 84 people with major depressive disorder prior to initiating antidepressant treatment.

Brain MRI white matter hyperintensities and one-carbon cycle metabolism in non-geriatric outpatients with major depressive disorder (Part I).

The objective of the present work was to study the interrelationship between white matter hyperintensities (WMHs), cardiovascular risk factors and elements of the one-carbon cycle including serum folate, vitamin B12, and homocysteine levels in a relatively young sample of outpatients with major depressive disorder (MDD), and to compare the severity of white matter hyperintensities in MDD patients and healthy volunteers. Fifty MDD outpatients (34% women, age 40.6+/-10.

Brain MRI white matter hyperintensities and one-carbon cycle metabolism in non-geriatric outpatients with major depressive disorder (Part II).

The objective of this study was to investigate the relative impact of brain white matter hyperintensities (WMHs), cardiovascular risk factors and elements of the one-carbon cycle metabolism (including serum folate, vitamin B12 and homocysteine levels) on the outcome of antidepressant treatment in non-elderly subjects with major depressive disorder (MDD). Fifty MDD subjects were administered brain magnetic resonance imaging (MRI) scans at 1.5 T to detect T2 WMHs.

MR imaging of solitary fibrous tumors in the head and neck.

Objective: Solitary fibrous tumor (SFT) is a very rare tumor. The purpose of this study is to determine the MR imaging features of SFT in the intracranial and extracranial head and neck regions.

Materials And Methods: We retrospectively reviewed six MR images and two CT images of six histologically proven cases of SFT that occurred in four men and two women, and their ages ranged from 46 to 59 years.

Alveolar soft-part sarcoma of the head and neck: clinical and imaging features in five cases.

Background And Purpose: Alveolar soft-part sarcoma (ASPS) of the head and neck is an extremely rare malignancy. Although the clinical and imaging features of this tumor have been reported, a periodic review of unusual tumors is useful. The purpose of this study was to describe the clinical and imaging features of ASPS of the head and neck.

Postoperative multidetector computed tomography angiography after aneurysm clipping: comparison with digital subtraction angiography.

Objectives: To evaluate the usefulness of multidetector computed tomography angiography (MDCTA) as a noninvasive diagnostic modality for the detection of aneurysm remnants after clipping of intracranial aneurysms.

Methods: Thirty-eight patients who had aneurysm clipping and had undergone MDCTA and digital subtraction angiography (DSA) were enrolled in this study. In 16 of the 38 patients, MDCTA was performed with 16-channel MDCTA, in 20 patients with 4-channel MDCTA, and in 2 with both.

White matter hyperintensities in subjects with bipolar disorder.

There have been divergent reports on the prevalence and severity of white matter hyperintensities (WMH) on brain magnetic resonance (MR) images in subjects with bipolar disorder. In the present study, evaluations were made on the prevalence and severity of WMH in subjects with bipolar disorder using contiguous 3-mm thick MR slices as well as fluid attenuated inversion recovery (FLAIR) images. A detailed WMH rating system was employed to assess these WMH.

White matter hyperintensities in subjects with cocaine and opiate dependence and healthy comparison subjects.

The prevalence, severity, and location of white matter signal hyperintensities (WMH) on brain magnetic resonance images were compared in patients with cocaine or opiate dependence and healthy subjects. Patients with cocaine (n=32) and opiate dependence (n=32), whose diagnoses were confirmed with the Structured Clinical Interview for DSM-IV, and age- and sex-matched healthy subjects (n=32) were scanned using a 1.5 T whole body GE magnetic resonance scanner.

CSF flow quantification of the cerebral aqueduct in normal volunteers using phase contrast cine MR imaging.

Objective: To evaluate whether the results of cerebrospinal fluid (CSF) flow quantification differ according to the anatomical location of the cerebral aqueduct that is used and the background baseline region that is selected.

Materials And Methods: The CSF hydrodynamics of eleven healthy volunteers (mean age = 29.6 years) were investigated on a 1.