journal
MENU ▼
Read by QxMD icon Read
search

Magnetic Resonance in Medical Sciences: MRMS

journal
https://www.readbyqxmd.com/read/30175804/clinical-imaging-of-glycogen-rich-clear-cell-carcinoma-of-the-breast-a-case-series-with-literature-review
#1
Na Lae Eun, Yoon Jin Cha, Eun Ju Son, Hye Mi Gweon, Jeong-Ah Kim, Ji Hyun Youk
Glycogen-rich clear cell carcinoma (GRCC) of the breast is a rare malignant tumor. Most previous reports focused on clinicopathologic findings of GRCC and imaging findings were not precisely described. Here, we report imaging findings of three cases of GRCC along with a literature review. GRCC of the breast was depicted as a mass with irregular or oval shape on mammography and complex cystic and solid composition or focal cystic change on ultrasound. GRCC showed internal high signal intensity on T2 -weighted MRI with rim enhancement after contrast injection...
August 31, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/30146532/a-small-granulosa-cell-tumor-of-the-ovary-incidentally-detected-on-diffusion-weighted-images
#2
Chie Inoue, Shinya Fujii, Kanae Nosaka, Naoko Mukuda, Takeru Fukunaga, Toshihide Ogawa
No abstract text is available yet for this article.
August 24, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/30135323/fibro-fatty-degeneration-in-hypertrophic-cardiomyopathy
#3
Kongkiat Chaikriangkrai, Mahi Ashwath
No abstract text is available yet for this article.
August 23, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/30047496/assessment-of-coronary-flow-velocity-reserve-in-the-left-main-trunk-using-phase-contrast-mr-imaging-at-3t-comparison-with-15-o-labeled-water-positron-emission-tomography
#4
Yasuka Kikuchi, Masanao Naya, Noriko Oyama-Manabe, Osamu Manabe, Hiroyuki Sugimori, Kohsuke Kudo, Fumi Kato, Tadao Aikawa, Hiroyuki Tsutsui, Nagara Tamaki, Hiroki Shirato
PURPOSE: The aim of this study was to verify coronary flow velocity reserve (CFVR) on the left main trunk (LMT) in comparison with myocardial flow reserve (MFR) by 15 O-labeled water positron emission tomography (PET) (MFR-PET) in both the healthy adults and the patients with coronary artery disease (CAD), and to evaluate the feasibility of CFVR to detect CAD. METHODS: Eighteen healthy adults and 13 patients with CAD were evaluated. CFVR in LMT was estimated by 3T magnetic resonance imaging (MRI) with phase contrast technique...
July 26, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/30033996/hypointense-spleen-associated-with-severe-acute-pancreatitis-on-mr-imaging
#5
Yasuo Amano, Ryo Takagi, Fumi Yanagisawa, Chisato Ando
No abstract text is available yet for this article.
July 20, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/30012905/how-to-improve-the-conspicuity-of-breast-tumors-on-computed-high-b-value-diffusion-weighted-imaging
#6
Takayuki Tamura, Miyuki Takasu, Toru Higaki, Kazushi Yokomachi, Yuji Akiyama, Hiroomi Sumida, Yasushi Nagata, Kazuo Awai
PURPOSE: The aim of this study was to compare the tumor conspicuity on actual measured diffusion-weighted images (aDWIs) and computed DWI (cDWI) of human breast tumors and to examine, by use of a phantom, whether cDWI improves their conspicuity. MATERIALS AND METHODS: We acquired DWIs (b-value 0, 700, 1400, 2100, 2800, and 3500 s/mm2 ) of 148 women with breast tumors. cDWIs with b-values of 1400, 2100, 2800, and 3500 s/mm2 were calculated from aDWI scans where b = 0 and 700 s/mm2 ; the tumor signal-to-noise ratio (SNR) was compared at each b-value...
July 13, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29984783/the-effect-of-varying-slice-thickness-and-interslice-gap-on-t-1-and-t-2-measured-with-the-multidynamic-multiecho-sequence
#7
Koung Mi Kang, Seung Hong Choi, Hyeonjin Kim, Moonjung Hwang, Roh-Eul Yo, Tae Jin Yun, Ji-Hoon Kim, Chul-Ho Sohn
PURPOSE: The purpose of our study was to investigate the effect of different slice thicknesses and/or interslice gaps on longitudinal and transverse relaxation times (T1 and T2 ) measured by a multi-dynamic, multi-echo (MDME) sequence. MATERIALS AND METHODS: This retrospective study included nine healthy subjects who underwent MDME sequence (at 3T) with four different combinations of slice thicknesses and/or interslice gaps: slice thickness of 4 mm and interslice gap of 0 mm (TH4/G0), TH4/G1, TH5/G0, and TH5/G1...
July 6, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29213007/the-value-of-lesion-size-as-an-adjunct-to-the-bi-rads-mri-2013-descriptors-in-the-diagnosis-of-solitary-breast-masses
#8
Makiko Kawai, Masako Kataoka, Shotaro Kanao, Mami Iima, Natsuko Onishi, Akane Ohashi, Rena Sakaguchi, Masakazu Toi, Kaori Togashi
PURPOSE: This study aimed to evaluate the MRI findings of breast solitary masses in diagnostic procedures to decide the appropriate category based on American College of Radiology (ACR) BI-RADS-MRI 2013, with the focus on lesion size. METHODS: A retrospective review of 2,603 consecutive breast MRI reports identified 250 pathologically-proven solitary breast masses. Dynamic-contrast enhanced images and diffusion-weighted images were performed on a 3.0/1.5 Tesla Scanner with a 16/4 channel dedicated breast coil...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29212957/comparison-of-glass-capillary-plates-and-polyethylene-fiber-bundles-as-phantoms-to-assess-the-quality-of-diffusion-tensor-imaging
#9
Atsushi Tachibana, Yasuhiko Tachibana, Jeff Kershaw, Hiromi Sano, Masahiro Fukushi, Takayuki Obata
PURPOSE: The purpose of this study was to evaluate the suitability of two phantoms, one made of capillary plates and the other polyethylene fibers, for assessing the quality of diffusion tensor imaging (DTI). METHODS: The first phantom was a stack of glass capillary plates with many parallel micropores (CP). The second phantom was a bundle of polyethylene fiber Dyneema held together with a thermal shrinkage tube (Dy). High resolution multi-shot echo planar imaging (EPI) DTI acquisitions were performed at b-values of 0 and 1000 s/mm2 and diffusion-times (Tdiff ) of 37...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29187678/additive-value-of-3t-3d-ciss-imaging-to-conventional-mri-for-assessing-the-abnormal-vessels-of-spinal-dural-arteriovenous-fistulae
#10
Hiroyuki Uetani, Toshinori Hirai, Mika Kitajima, Minako Azuma, Shigetoshi Yano, Hideo Nakamura, Keishi Makino, Yutaka Kai, Yasunori Nagayama, Yoshihito Kadota, Yasuyuki Yamashita
INTRODUCTION: We investigated the additive value of the 3T 3D constructive interference in steady state (CISS) sequence to conventional MRI for the evaluation of spinal dural arteriovenous fistulae (SDAVF). MATERIALS AND METHODS: We included 16 consecutive patients (15 men, 1 woman; age range 42-81 years; mean 64 years) with SDAVF who underwent 3T MRI and digital subtraction angiography (DSA) before treatment. Two neuroradiologists independently evaluated the presence of abnormal vessels on 3D CISS-, T2 - and T1 -weighted images (T1 WI, T2 WI), and contrast-enhanced T1 WI using a 3-point grading system...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29142152/indirect-proton-mr-imaging-and-kinetic-analysis-of-17-o-labeled-water-tracer-in-the-brain
#11
Kohsuke Kudo, Taisuke Harada, Hiroyuki Kameda, Ikuko Uwano, Fumio Yamashita, Satomi Higuchi, Kunihiro Yoshioka, Makoto Sasaki
PURPOSE: The feasibility of steady-state sequences for 17 O imaging was evaluated based on a kinetic analysis of the brain parenchyma and cerebrospinal fluid (CSF). MATERIALS AND METHODS: The institutional review board approved this prospective study with written informed consent. Dynamic 2D or 3D steady-state sequences were performed in five and nine participants, respectively, with different parameters using a 3T scanner. During two consecutive dynamic scans, saline was intravenously administered for control purposes in the first scan, and 20% 17 O-labeled water (1 mL/Kg) was administered in the second scan...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29129844/spatial-restriction-within-intracranial-epidermoid-cysts-observed-using-short-diffusion-time-diffusion-weighted-imaging
#12
Christina Andica, Masaaki Hori, Kouhei Kamiya, Saori Koshino, Akifumi Hagiwara, Koji Kamagata, Issei Fukunaga, Nozomi Hamasaki, Michimasa Suzuki, Thorsten Feiweier, Katsutoshi Murata, Atsushi Arakawa, Akihide Kondo, Osamu Akiyama, Shigeki Aoki
We report two cases of pathologically proven intracranial epidermoid cysts. Both cases were scanned with diffusion-weighted imaging using pulsed gradient spin-echo (PGSE) and oscillating gradient spin-echo (OGSE; 50 Hz) prototype sequences with diffusion times of 47.3 ms and 8.5 ms, respectively. The apparent diffusion coefficient measured by OGSE was higher than that measured by PGSE, indicating the spatial restriction of water diffusion in the laminated keratin layers within the cyst as demonstrated by histopathology...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29129843/large-arterial-ring-formed-between-the-m1-and-m2-segments-of-the-right-middle-cerebral-artery-diagnosed-with-mr-angiography
#13
Haruomi Yamaguchi, Akira Uchino, Naoko Saito, Ichiro Deguchi, Masaki Takao
No abstract text is available yet for this article.
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29118306/quantitation-error-in-1-h-mrs-caused-by-b-1-inhomogeneity-and-chemical-shift-displacement
#14
Hidehiro Watanabe, Nobuhiro Takaya
PURPOSE: The quantitation accuracy in proton magnetic resonance spectroscopy (1 H MRS) improves at higher B0 field. However, a larger chemical shift displacement (CSD) and stronger B1 inhomogeneity exist. In this work, we evaluate the quantitation accuracy for the spectra of metabolite mixtures in phantom experiments at 4.7T. We demonstrate a position-dependent error in quantitation and propose a correction method by measuring water signals. MATERIALS AND METHODS: All experiments were conducted on a whole-body 4...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28993563/mri-findings-consistent-with-peripatellar-fat-pad-impingement-how-much-related-to-patellofemoral-maltracking
#15
Mohamed Jarraya, Luis E Diaz, Frank W Roemer, William F Arndt, Ajay R Goud, Ali Guermazi
Peripatellar fat pads are intracapsular extrasynovial adipose cushions that accommodate the changing shape and volume of articular spaces during movement. Variations in bone geometry, passive and active stabilization mechanisms and/or functional demands may lead to peripatellar fat pad abnormalities. While peripatellar fat pads may be affected a variety of conditions such as synovial inflammation, tumor and fibrosis, a mechanical origin should also be considered. Commonly, the clinical term "impingement" is used synonymously in the radiological literature to refer to three distinct entities of structural peripatellar fat pad abnormalities: superolateral the infrapatellar fat pad (Hoffa fat pad) edema, suprapatellar fat pad edema, and prepatellar fat pad edema, implying a mechanical origin of these conditions...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28993546/differentiation-of-seromucinous-borderline-tumor-from-serous-borderline-tumor-on-mr-imaging
#16
Yasuhisa Kurata, Aki Kido, Yusaku Moribata, Kyoko Kameyama, Sachiko Minamiguchi, Ikuo Konishi, Kaori Togashi
PURPOSE: Seromucinous borderline tumor (SMBT) is a newly categorized ovarian tumor in the 2014 revised World Health Organization (WHO) classification. SMBT is similar to serous borderline tumor (SBT) on MRI reflecting their pathological findings. This study was conducted to demonstrate the usefulness of MRI findings and quantitative values for differentiating SMBT from SBT. METHODS: This retrospective study examined 23 lesions (20 patients) from SMBT and 26 lesions (22 patients) from SBT...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28978812/superficial-siderosis-associated-with-a-spinal-dural-defect
#17
Toshitada Hiraka, Masafumi Kanoto, Yuki Toyoguchi, Ryousuke Igari, Takeo Kato, Takaaki Hosoya
No abstract text is available yet for this article.
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28966302/mr-imaging-of-xanthogranulomatous-oophoritis
#18
Minako Maruyama, Takeshi Yoshizako, Rika Yoshida, Noriyoshi Ishikawa, Satoru Kyo, Hajime Kitagaki
No abstract text is available yet for this article.
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28835572/time-spatial-labeling-inversion-pulse-time-slip-with-pencil-beam-pulse-a-selective-labeling-technique-for-observing-cerebrospinal-fluid-flow-dynamics
#19
Shuhei Shibukawa, Tosiaki Miyati, Tetsu Niwa, Mitsunori Matsumae, Tetsuo Ogino, Tomohiko Horie, Yutaka Imai, Isao Muro
We assessed labeling region selectivity on time-spatial labeling inversion pulse (Time-SLIP) with pencil beam pulse (PB Time-SLIP) for the use of visualizing cerebrospinal fluid (CSF) flow dynamics. We compared the selectivity of labeling to the third and fourth ventricles between PB Time-SLIP and conventional Time-SLIP (cTime-SLIP) in eight volunteers and one patient using a 1.5T MRI. PB Time-SLIP provided more selective labeling in CSF than cTime-SLIP, particularly in complex anatomical regions.
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28824051/factors-that-differentiate-between-endometriosis-associated-ovarian-cancer-and-benign-ovarian-endometriosis-with-mural-nodules
#20
Yasuhito Tanase, Ryuji Kawaguchi, Junko Takahama, Hiroshi Kobayashi
PURPOSE: Mural nodules and papillary projections can be seen in benign ovarian endometriosis (OE) and malignant transformation of OE (endometriosis-associated ovarian cancer [EAOC]), which can pose a challenging diagnostic dilemma to clinicians. We identify the preoperative imaging characteristics helpful to the differential diagnosis between benign OE with mural nodules and EAOC. MATERIALS AND METHODS: This was a retrospective study of 82 patients who were diagnosed pathologically to have OE with mural nodules (n = 42) and malignant transformations of these tumors (n = 40) at the Nara Medical University Hospital from January 2008 to January 2015...
July 10, 2018: Magnetic Resonance in Medical Sciences: MRMS
journal
journal
40265
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"