1.Basic Principles and Clinical Application of Functional MRI.
Journal of the Korean Medical Association 2001;44(4):414-422
No abstract available.
Magnetic Resonance Imaging*
2.Reversible Splenial Lesion in a Patient With Acute Alcohol Intoxication.
Jae Won JANG ; Kwang Yeol PARK ; Oh Sang KWON ; Hae Won SHIN ; Suk Won AHN ; Ji Eun SONG ; Ko Woon KIM
Journal of the Korean Neurological Association 2011;29(2):154-156
No abstract available.
Humans
;
Magnetic Resonance Imaging
3.Brain MRI findings in schizophrenics.
Young Bong LEE ; Young Cho CHUNG ; Gam HUR
Journal of Korean Neuropsychiatric Association 1993;32(6):1026-1035
No abstract available.
Brain*
;
Magnetic Resonance Imaging*
4.Lumbar apophyseal ring fracture and disc herniation: CT and MRI manifestations.
Hyeon Kyeong LEE ; Heung Sik KANG ; Chi Sung SONG
Journal of the Korean Radiological Society 1991;27(4):572-576
No abstract available.
Magnetic Resonance Imaging*
5.New Technologies for Magnetic Resonance Imaging Compatible Device of Boston Scientific.
International Journal of Arrhythmia 2016;17(3):150-155
The use of both magnetic resonance imaging (MRI) and pacing devices has vastly increased worldwide in recent years. A significant number of implanted patients will likely need monitoring using magnetic resonance imaging (MRI) over the course of the lifetime of their device. Some studies have demonstrated that with appropriate precautions, MRI can be safely performed in patients with selected implantable pacemakers. However, MRI is still contraindicated in patients with pacemakers. Recently, new pacing systems have been specifically designed for safe use in the MRI environment. The first reported experience suggests that the technology is safe and may allow patients with these new pacemakers to undergo MRI. This review will describe the outstanding issues and controversies surrounding the safety of MRI in patients with pacemakers, and the potential benefits of the new MRI-conditional technology. We will also discuss how to decide whether an MRI-conditional system should be implanted, and highlight key issues that warrant further studies.
Humans
;
Magnetic Resonance Imaging*
6.Fetal Magnetic Resonance Imaging.
Korean Journal of Perinatology 2003;14(3):274-283
No abstract available.
Magnetic Resonance Imaging*
7.Fast Cardiac CINE MRI by Iterative Truncation of Small Transformed Coefficients.
Jinho PARK ; Hye Jin HONG ; Young Joong YANG ; Chang Beom AHN
Investigative Magnetic Resonance Imaging 2015;19(1):19-30
PURPOSE: A new compressed sensing technique by iterative truncation of small transformed coefficients (ITSC) is proposed for fast cardiac CINE MRI. MATERIALS AND METHODS: The proposed reconstruction is composed of two processes: truncation of the small transformed coefficients in the r-f domain, and restoration of the measured data in the k-t domain. The two processes are sequentially applied iteratively until the reconstructed images converge, with the assumption that the cardiac CINE images are inherently sparse in the r-f domain. A novel sampling strategy to reduce the normalized mean square error of the reconstructed images is proposed. RESULTS: The technique shows the least normalized mean square error among the four methods under comparison (zero filling, view sharing, k-t FOCUSS, and ITSC). Application of ITSC for multi-slice cardiac CINE imaging was tested with the number of slices of 2 to 8 in a single breath-hold, to demonstrate the clinical usefulness of the technique. CONCLUSIONS: Reconstructed images with the compression factors of 3-4 appear very close to the images without compression. Furthermore the proposed algorithm is computationally efficient and is stable without using matrix inversion during the reconstruction.
Magnetic Resonance Imaging, Cine*
8.T2 relaxation of magnetic resonance imaging in schizophrenics.
Im Ryol KIM ; Kee Hyun CHANG ; Yong Sik KIM
Journal of Korean Neuropsychiatric Association 1992;31(3):566-575
No abstract available.
Magnetic Resonance Imaging*
;
Relaxation*
9.Erratum: Magnetic Resonance Imaging Features of Adenosis in the Breast.
Masoumeh GITY ; Ali ARABKHERADMAND ; Elham TAHERI ; Madjid SHAKIBA ; Yassaman KHADEMI ; Bijan BIJAN ; Mohammad Salehi SADAGHIANI ; Amir Hossein JALALI
Journal of Breast Cancer 2017;20(1):116-116
No abstract available.
Breast*
;
Magnetic Resonance Imaging*
10.The Thickness of Normal and Repaired Rotator-cuff Measured in MRI.
Jung Man KIM ; Yang Soo KIM ; Yong Jin KWON ; Ju Seok YOO ; Hyun Woo JUNG
Journal of the Korean Shoulder and Elbow Society 2007;10(1):42-49
Purpose: To compare the thickness of the repaired full-thickness rotator-cuff tear to that of normal rotator-cuff in young and old persons and evaluate the relationship between the tear size and the repaired thickness in the full-thickness tear using MRI. Materials and Methods: The thickness of the rotator-cuff of the repaired full thickness tear(age: 45~77, mean 63.3 years, 19 patients: group 1) were compared with those of old intact patients (age: 46~69, mean 57.9 years, 23 patients: group 2) and young intact patients (age: 18~30, mean 23.3 years, 22 patients: group 3). The tear length and width was measured in oblique coronal and oblique sagittal view of MRA, respectively, and the thickness was measured in coronal oblique view 15mm anterior to the posterolateral margin of the glenoid. Correlation between the preoperative tear size (the bigger one between the length and the width) and the postoperative thickness in group 1 was also evaluated statistically. Results: The postoperative rotator-cuff thickness in group 1 was 3.0 mm in average, which was inversely proportional to the preoperative tear size (P<0.001). The rotator-cuff thickness was 3.9mm in group 2 and 5.0mm in group 3, and there was statistically significant difference among the three groups(P<0.05). Conclusion: The rotator-cuff thickness decreases with age and the postoperative thickness in the full-thickness tear was inversely proportional to the tear size, smaller than that of the intact rotator-cuff.
Humans
;
Magnetic Resonance Imaging*
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