Journal•ISSN: 0288-2043
Radiation Medicine
Springer Nature
About: Radiation Medicine is an academic journal. The journal publishes majorly in the area(s): Radiation therapy & Magnetic resonance imaging. It has an ISSN identifier of 0288-2043. Over the lifetime, 1533 publications have been published receiving 16962 citations.
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Journal Article•
TL;DR: In this article, the authors examined a new way of body diffusion weighted imaging (DWI) using the short TI inversion recovery-echo planar imaging (STIR-EPI) sequence and free breathing scanning (diffusion weighted whole body imaging with background body signal suppression; DWIBS) to obtain three-dimensional displays.
Abstract: Purpose: To examine a new way of body diffusion weighted imaging (DWI) using the short TI inversion recovery-echo planar imaging (STIR-EPI) sequence and free breathing scanning (diffusion weighted whole body imaging with background body signal suppression; DWIBS) to obtain three-dimensional displays. Materials and Methods: 1) Apparent contrast-to-noise ratios (AppCNR) between lymph nodes and surrounding fat tissue were compared in three types of DWI with and without breathholding, with variable lengths of scan time and slice thickness. 2) The STIR-EPI sequence and spin echo-echo planar imaging (SE-EPI) sequence with chemical shift selective (CHESS) pulse were compared in terms of their degree of fat suppression. 3) Eleven patients with neck, chest, and abdominal malignancy were scanned with DWIBS for evaluation of feasibility. Whole body imaging was done in a later stage of the study using the peripheral vascular coil. Results: The AppCNR of 8 mm slice thickness images reconstructed from 4 mm slice thickness source images obtained in a free breathing scan of 430 sec were much better than 9 mm slice thickness breath-hold scans obtained in 25 sec. High resolution multi-planar reformat (MPR) and maximum intensity projection (MIP) images could be made from the data set of 4 mm slice thickness images. Fat suppression was much better in the STIR-EPI sequence than SEEPI with CHESS pulse. The feasibility of DWIBS was showed in clinical scans of 11 patients. Whole body images were successfully obtained with adequate fat suppression. Conclusion: Three-dimensional DWIBS can be obtained with this technique, which may allow us to screen for malignancies in the whole body.
722 citations
TL;DR: The mean ADC values for breast cancer were significantly different from that of normal breasts, and the mean ADC value did not significantly correlate with cancer cellularity but did correlate with histological types.
Abstract: Purpose
The purpose of this study was to examine the relation between cancer cellularity and the apparent diffusion coefficient (ADC) value using diffusion-weighted magnetic resonance imaging in breast cancer.
145 citations
TL;DR: The ADC value might be useful for diagnosing the malignancy of nonmyxoid soft tissue tumors.
Abstract: Purpose
We evaluated the efficacy of using the apparent diffusion coefficient (ADC) to differentiate soft tissue tumors.
136 citations
TL;DR: Small cancers were more clearly visible on DWI at 3.0 T than 1.5 T and had better image scores at 3-0-T than at 1-1-5 T.
Abstract: Purpose
The aim of this study was to compare diffusion-weighted imaging (DWI) at 3.0 T and 1.5 T by evaluating the apparent diffusion coefficient (ADC) value and visibility of breast cancer in the same patients.
115 citations
Journal Article•
TL;DR: An introduction to the importance of perception research in medical imaging is provided to provide the reader with an introduction to why these perceptual and cognitive errors occur and what steps can be taken to ameliorate them.
Abstract: The goal of this paper is to provide the reader with an introduction to the importance of perception research in medical imaging. It is well known that radiologists' performance is not perfect: they make both false positive and false negative decisions, both of which can impact on patient care and treatment. Some of these errors can be attributed to technical difficulties such as underexposing a plain film X-ray image. Such technical explanations cannot, however, account for all the errors that are made; missed lesions are often found in retrospect. These errors can be attributed to perceptual and/or cognitive factors. The study of why these perceptual and cognitive errors occur and what steps can be taken to ameliorate them is a relatively small but growing area in the field of medical imaging. Understanding the capabilities of the human visual system with respect to medical imaging is becoming even more important as we make the transition from the traditional film-based display to soft-copy monitor viewing of medical images. If we understand what the human visual system is capable of, we can tailor the display of medical information to take advantage of these perceptual capacities.
97 citations