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Feasibility Study for a Microstrip Transmission Line RF Coil Integrated with a PET Detector Module in a 7T Human MR Imaging System
CONCLUSIONS: Both the MRI and PET performances of the MS PET coil showed responses that matched the MS coil responses. The performance variations of MRI data with and without PET measurement and PET data with and without MR imaging were negligible.PMID:38346767 | DOI:10.2463/mrms.mp.2023-0061 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - February 12, 2024 Category: Radiology Authors: Md Shahadat Hossain Akram Masaki Fukunaga Fumihiko Nishikido Sodai Takyu Takayuki Obata Taiga Yamaya Source Type: research

Axillary Lymphadenopathy after COVID-19 Vaccination: Follow-up for Enlarged Lymph Nodes on MR Imaging
CONCLUSION: The enlarged axillary lymph nodes decreased both in size and in signal intensity on T2-weighted images of follow-up MRI. The ADC remained unchanged. Our findings may provide important information to establish evidence-based guidelines for conducting proper assessment and management of post-vaccination lymphadenopathy.PMID:38325833 | DOI:10.2463/mrms.mp.2023-0147 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - February 7, 2024 Category: Radiology Authors: Noriko Kanemaru Takeharu Yoshikawa Soichiro Miki Takahiro Nakao Yuta Nakamura Kotaro Fujimoto Osamu Abe Source Type: research

Peritumoral Fat Content Identified Using Iterative Decomposition of Water and Fat with Echo Asymmetry and Least-squares Estimation (IDEAL) Correlates with Breast Cancer Prognosis
CONCLUSION: Peritumoral fat content identified by using IDEAL is associated with LNM and RFS and may therefore be a useful prognostic biomarker for BC.PMID:38325834 | DOI:10.2463/mrms.mp.2023-0127 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - February 7, 2024 Category: Radiology Authors: Natsumi Hirano Tani Yuki Koreeda Aya Nawata Akitaka Fujisaki Yoshiko Hayashida Shohei Shimajiri Toshiyuki Nakayama Masanori Hisaoka Yuzuru Inoue Keiji Hirata Yuko Tashima Fumihiro Tanaka Takatoshi Aoki Source Type: research

Nature of the Intracellular-contrast-enhancing Fat-saturated T1-weighted Gradient-echo (ICE-TIGRE) Sequence: A Fat-suppressed T1-weighted Technique with Motion-sensitised Driven-equilibrium for Improved Contrast Enhancement in Liver Imaging
Magn Reson Med Sci. 2024 Feb 2. doi: 10.2463/mrms.tn.2023-0104. Online ahead of print.ABSTRACTGadoxetic acid is both an extracellular- and hepatocyte-specific contrast agent. Signals from the extracellular space may lower the contrast between lesions and the surrounding hepatic parenchyma. To improve hepatocyte-specific enhancement, we developed an intracellular contrast-enhancing fat-saturated T1-weighted gradient-echo nature of the sequence (ICE-TIGRE). It incorporates the motion-sensitized driven-equilibrium (MSDE) pulse to suppress signals from the blood flow. We investigated the optimal ICE-TIGRE scanning parameters, ...
Source: Magnetic Resonance in Medical Sciences - February 4, 2024 Category: Radiology Authors: Takashi Nishihara Yuko Nakamura Nobuyuki Yoshizawa Masahiro Takizawa Toru Shirai Toru Higaki Yukiko Honda Kazuo Awai Yoshitaka Bito Source Type: research

Surface-based Analyses of Diffusional Kurtosis Imaging in Amyotrophic Lateral Sclerosis: Relationship with Onset Subtypes
CONCLUSION: The distribution of abnormalities over the cerebral hemispheres and the more severe microstructural alteration in b-ALS compared to l-ALS were in good agreement with findings from postmortem histology. Our results suggest the feasibility of surface-based DKI analyses for exploring brain microstructural pathologies in ALS. The observed differences between b-ALS and l-ALS and their correlations with functional bulbar impairment support the clinical relevance of DKI measurement in the cortical and juxtacortical regions of patients with ALS.PMID:38296522 | DOI:10.2463/mrms.mp.2023-0138 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - January 31, 2024 Category: Radiology Authors: Kouhei Kamiya Sayori Hanashiro Osamu Kano Wataru Uchida Koji Kamagata Shigeki Aoki Masaaki Hori Source Type: research

Voxel-based Morphometry of Alzheimer's Disease Using a Localizer Image: A Comparative Study with Magnetization Prepared Rapid Acquisition with Gradient Echo
CONCLUSION: Although systematic difference was noted in regional brain volume measured from L3DFLASH and MPRAGE, AD-related atrophic pattern was preserved in L3DFLASH on VBM. VBM, using speedily acquired localizer image, may provide limited but useful information for evaluating brain atrophy.PMID:38233191 | DOI:10.2463/mrms.mp.2023-0093 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - January 17, 2024 Category: Radiology Authors: Shohei Inui Daita Kaneda Keita Sakurai Yuto Uchida Osamu Abe Yoshio Hashizume Source Type: research

Evaluating Hip Periprosthetic Joint Infection with Metal-artifact-reduction MR Imaging
CONCLUSION: The significant findings in the hip PJI cases included acetabular periosteal edema, intermuscular edema, intramuscular fluid collection, and lymphadenopathy. The significant findings in the cases with surgical intervention included capsular distention, capsular thickening, a femoral osteolysis-like pattern, subcutaneous fluid collection, and lymphadenopathy. The utilization of MAR MRI demonstrated great diagnostic significance for hip PJI.PMID:38233192 | DOI:10.2463/mrms.mp.2023-0028 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - January 17, 2024 Category: Radiology Authors: Tsutomu Inaoka Masayuki Sugeta Tomoya Nakatsuka Shusuke Kasuya Rumiko Ishikawa Yoshiya Sugiura Arata Nakajima Koichi Nakagawa Akinori Yamamoto Hitoshi Terada Source Type: research

Value of T1 Mapping in the Non-invasive Assessment of Renal Pathologic Injury for Chronic Kidney Disease Patients
CONCLUSION: T1 mapping has potential application value in non-invasively assessing renal pathologic injury in CKD.PMID:38143088 | DOI:10.2463/mrms.mp.2023-0027 (Source: Magnetic Resonance in Medical Sciences)
Source: Magnetic Resonance in Medical Sciences - December 24, 2023 Category: Radiology Authors: Wei Mao Yuqin Ding Xiaoqiang Ding Caixia Fu Bohong Cao Dominik Nickel Jianjun Zhou Mengsu Zeng Source Type: research