• 한국자기공명학회논문지
• /
• 제3권2호
• /
• pp.140-148
• /
• 1999

Using 1H magnetic resonance spectroscopy (MRS), we quantitatively evaluated correlation representing linear relationship between the metabolite peak area ratios associated with poor shimming conditions. The inadequate shimming due to linear shim offsets directly affected overall MR spectral quality as well as peak area for each metabolite. Three major peaks such as N-acetylaspartate (NAA), creatine (Cr,) choline (Cho) were used as a reference for data analysis. Despite considerable variations of metabolite peak area, a significant correlation between the metabolite peak area ratios relative to Cr was established while the correlation between the peak area ratios relative to Cho and NAA was not. The present study suggested that metabolite peak area ratios based on the metabolite of Cr could be an acceptable quantification method even under the poor shimming in clinical MRS examination.

• Investigative Magnetic Resonance Imaging
• /
• 제20권1호
• /
• pp.1-8
• /
• 2016

The spine is the most common location for skeletal metastases, and the incidence of spinal metastasis shows an increasing tendency. Because metastatic spinal tumors progress from an anterior element to a posterior element resulting in continuing destruction of the pedicles, epidural extension and involvement of neural structures of the metastatic tumor are eventually visible. Therefore, it is clinically significant for radiologists to understand the pathophysiology of spinal metastasis and to assess the involvement of neural structures and the disintegration of spinal instability related to the pathophysiology. As MRI is also the best imaging modality for diagnosing spinal metastasis, radiologists should accurately assess spinal metastasis and provide practical information to physicians. Therefore, we will describe some analysis points focusing on the understanding of pathophysiology of spinal metastasis and the next step toward a more extensive clinical approach using MR imaging.

• Investigative Magnetic Resonance Imaging
• /
• 제12권2호
• /
• pp.201-205
• /
• 2008

경막내 척수외 결핵종은 척추 결핵의 드문 형태로, 몇몇 증례들이 보고되었다. 저자들은 최근 흉추에 발생한 광범위한 경막내 척수외 결핵종 2예를 경험하였기에 문헌고찰과 함께 보고하고자 한다.

• Investigative Magnetic Resonance Imaging
• /
• 제19권2호
• /
• pp.127-130
• /
• 2015

Direct injection of foreign material, such as liquid paraffin and silicone, into the breast can induce a foreign body granulomatous reaction and fibrosis, resulting in hard, nodular breast masses and architectural distortion that can mimic neoplasm. Conventional methods, including physical examination, mammography, and ultrasonography are of little use to differentiate between foreign body-induced mastopathy and breast cancer. In patients with foreign body injection such as breast augmentation, dynamic contrast enhanced MR imaging is an excellent imaging modality. Here, the authors report the MR imaging and pathological findings of ductal carcinoma in situ (DCIS) with multicystic changes in a 41-year-old woman with a previous history of interstitial mammoplasty by paraffin injection.

• 한국의학물리학회지:의학물리
• /
• 제31권3호
• /
• pp.35-53
• /
• 2020

The authors congratulate the cerebrations for the 30 years of the Korean Society of Medical Physics (http://www.ksmp.or.kr/). The paper is published to recognize the anniversary. Geon-Ho Jahng invited Professor Z. H. Cho to join to submit this manuscript because he has been one of the leaders in the field of magnetic resonance imaging (MRI) during the last 40 years. In this review, we describe the development and clinical histories of MRI internationally and domestically. We also discuss diffusion and perfusion MRI, molecular imaging using MRI and MR spectroscopy (MRS), and the hybrid systems, such as positron emission tomography-MRI (PET-MRI), MR-guided focused ultrasound surgery (MRgFUS), and MRI-guided linear accelerators (MRI-LINACs). In each part, we discuss the historical evolution of the developments, technical developments, and clinical applications.

• 대한자기공명의과학회:학술대회논문집
• /
• 대한자기공명의과학회 2004년도 제9차 학술대회 초록집
• /
• pp.44-44
• /
• 2004

• 대한자기공명의과학회:학술대회논문집
• /
• 대한자기공명의과학회 1996년도 추계학술대회 초록집
• /
• pp.68-68
• /
• 1996

• 대한자기공명의과학회:학술대회논문집
• /
• 대한자기공명의과학회 1997년도 제2차 추계학술대회 초록집
• /
• pp.28-28
• /
• 1997

• 한국자기공명학회:학술대회논문집
• /
• 한국자기공명학회 2000년도 제17회 학술발표회
• /
• pp.33-37
• /
• 2000

• 대한자기공명의과학회:학술대회논문집
• /
• 대한자기공명의과학회 2006년도 제11차 학술대회
• /
• pp.86-86
• /
• 2006