• Proceedings of the KSMRM Conference
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• 2008.04a
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• pp.82-128
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• 2008

• Proceedings of the Korean Magnetic Resonance Society Conference
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• 2000.08a
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• pp.6-18
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• 2000

• Proceedings of the KSMRM Conference
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• 1997.03a
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• pp.1-18
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• 1997

• Proceedings of the KSMRM Conference
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• 2000.11a
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• pp.74-74
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• 2000

• Proceedings of the Korean Magnetic Resonance Society Conference
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• 2002.01a
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• pp.19-19
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• 2002

• Proceedings of the Korean Magnetic Resonance Society Conference
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• 2002.08a
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• pp.12-13
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• 2002

• Investigative Magnetic Resonance Imaging
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• v.15 no.2
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• pp.154-159
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• 2011

Testicular epidermoid cyst is a rare benign tumor, accounting for 1-2% of all testicular tumors. It can be cured by organ preserving surgery, so accurate preoperative diagnosis is very important for preventing unneccessary and extensive orchiectomy. We experienced a case of an 18-year-old man who presented with a painless lump in his right testis. The testicular mass showed an onion ring sign on ultrasonography. Computed tomography images showed the mass as a low attenuating lesion with curvilinear calcification. On Magnetic resonance imaging (MRI), the mass appeared as high signal intensity with internal alternating low signal intensity patterns on T2-weighted images. The mass was displayed as having homogeneous high signal intensity on diffusion magnetic resonance imaging and showed lower apparent diffusion coefficient values than normal testis parenchyma, similar to intracranial epidermoid cysts. Testicular MRI with DWI and ADC map can help to more accurately diagnose testicular epidermoid cyst.

• Investigative Magnetic Resonance Imaging
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• v.21 no.4
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• pp.242-251
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• 2017

Purpose: To investigate the association of carotid intraplaque hemorrhage (IPH) with acute cerebral ischemic events and progression of stenosis using magnetic resonance (MR) imaging. Materials and Methods: From April 2014 to December 2016, 53 patients underwent carotid plaque MR imaging, including magnetization-prepared rapid acquisition with gradient-echo (MPRAGE) sequence. A total of 66 carotid arteries in 53 patients had carotid stenosis, and they were included in this study. Carotid arteries were classified according to the presence of IPH, the age of hemorrhage, and degree of stenosis. We assessed ipsilateral cerebrovascular event rates and progression of stenosis between the IPH and no-IPH groups. Results: Of the 61 carotid arteries assessed, 34 (56%) had IPH, and 27 (44%) had no IPH. Acute cerebral ischemic events were more frequent in the IPH group (47% vs. 22%, P = 0.045), especially in the < 30%-stenosis group (100% vs. 0%, P = 0.028). However, there was no significant difference in the incidence of ischemic events according to the age of hemorrhage (50% vs. 44%, P = 0.492). Among the 61 carotid arteries, 20 carotid arteries had previously undergone carotid artery imaging and were evaluated for plaque progression. The trend for progression of stenosis favored the IPH group versus the no-IPH group, with a marginal P-value ($20%{\pm}12.7$ vs. $9.6%{\pm}5.7$, P = 0.063). Conclusion: IPH was associated with an increased incidence of acute ischemic events, especially in the mild-stenosis group and it was also associated with progression of stenosis. Evaluation of the carotid IPH by carotid plaque MR could improve discrimination of carotid plaques that cause ischemic events and progression of stenosis.

• Investigative Magnetic Resonance Imaging
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• v.23 no.4
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• pp.316-327
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• 2019

Cardiovascular magnetic resonance imaging (CMR) is expected to be increasingly used in Korea due to technology advances and the expanded national insurance coverage of these tests. For improved patient care, it is crucial not only that CMR images are properly acquired but that they are accurately interpreted by well-trained personnel. In response to the increased demand for CMR, the Korean Society of Cardiovascular Imaging (KOSCI) has issued interpretation guidelines in conjunction with the Korean Society of Radiology (KSR). KOSCI has also created a formal Committee on CMR Guidelines to write updated practices. The members of this Committee review previously published interpretation guidelines and discuss the patterns of CMR use in Korea.

• Investigative Magnetic Resonance Imaging
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• v.2 no.1
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• pp.39-49
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• 1998

신장질환의 자기공명영상은 영상시간이 단축되면서 이용이 확대되고 있다. 다른 영상진단법에 비하여 높은 연부조직대조도, 다면영상능, MRI용 조영제의 안전성 등의 장점에도 불구하고 신장질환의 영상진단에 있어서 아직은 일반적으로 초음파검사와 CT의 보조적 역할을 하고 있는 것이 사실이다. 그러나 선택적으로는 MRI로만 평가할 수 있는 소견들이 신장질환의 진단에 도움이 되기도 한다.