Natacha Usanase, Berna Uzun, Dilber Uzun Ozsahin, Ilker Ozsahin
The effectiveness and precision of disease diagnosis and treatment have increased, thanks to developments in clinical imaging over the past few decades. Science is developing and progressing steadily in imaging modalities, and effective outcomes are starting to show up as a result of the shorter scanning periods needed as well as the higher-resolution images generated. The choice of one clinical device over another is influenced by technical disparities among the equipment, such as detection medium, shorter scan time, patient comfort, cost-effectiveness, accessibility, greater sensitivity and specificity, and spatial resolution...
September 21, 2023: Japanese Journal of Radiology
Takeshi Nakaura, Naofumi Yoshida, Naoki Kobayashi, Kaori Shiraishi, Yasunori Nagayama, Hiroyuki Uetani, Masafumi Kidoh, Masamichi Hokamura, Yoshinori Funama, Toshinori Hirai
PURPOSE: In this preliminary study, we aimed to evaluate the potential of the generative pre-trained transformer (GPT) series for generating radiology reports from concise imaging findings and compare its performance with radiologist-generated reports. METHODS: This retrospective study involved 28 patients who underwent computed tomography (CT) scans and had a diagnosed disease with typical imaging findings. Radiology reports were generated using GPT-2, GPT-3.5, and GPT-4 based on the patient's age, gender, disease site, and imaging findings...
September 15, 2023: Japanese Journal of Radiology
Jingjing Shan, Xuyun Xie, Benxing Gu, Xiaonan Sun, Hai Liu
PURPOSE: To investigate the effect of inflammation-based indexes in predicting radiation pneumonitis (RP) and prognosis in lung tumor patients treated with stereotactic body radiation therapy (SBRT). MATERIALS AND METHODS: The data of one hundred and seventy-two patients with 272 lung lesions from November 2015 to December 2020 were retrospectively analyzed. Pretreatment hematological indexes including platelet count, neutrophil count, and lymphocyte count were collected before treatment...
September 9, 2023: Japanese Journal of Radiology
Michela Gabelloni, Lorenzo Faggioni, Maria Chiara Brunese, Carmine Picone, Roberta Fusco, Giovanni Donato Aquaro, Dania Cioni, Emanuele Neri, Nicoletta Gandolfo, Andrea Giovagnoni, Vincenza Granata
Pleural mesothelioma (PM) is an aggressive disease that has a strong causal relationship with asbestos exposure and represents a major challenge from both a diagnostic and therapeutic viewpoint. Despite recent improvements in patient care, PM typically carries a poor outcome, especially in advanced stages. Therefore, a timely and effective diagnosis taking advantage of currently available imaging techniques is essential to perform an accurate staging and dictate the most appropriate treatment strategy. Our aim is to provide a brief, but exhaustive and up-to-date overview of the role of multimodal medical imaging in the management of PM...
September 7, 2023: Japanese Journal of Radiology
Yuka Takahashi, Fumiyo Higaki, Akiko Sugaya, Yudai Asano, Katsuhide Kojima, Yusuke Morimitsu, Noriaki Akagi, Toshihide Itoh, Yusuke Matsui, Takao Hiraki
Recently, computed tomography with photon-counting detector (PCD-CT) has been developed to enable high-resolution imaging at a lower radiation dose. PCD-CT employs a photon-counting detector that can measure the number of incident X-ray photons and their energy. The newly released PCD-CT (NAEOTOM Alpha, Siemens Healthineers, Forchheim, Germany) has been in clinical use at our institution since December 2022. The PCD-CT offers several advantages over current state-of-the-art energy-integrating detector CT (EID-CT)...
August 27, 2023: Japanese Journal of Radiology
Maria Navallas, Mirkamal Tolend, Tarimobo M Otobo, Jyoti Panwar, Emilio J Inarejos Clemente, Robert Hemke, Marion A van Rossum, Andrea S Doria
The treatment of a patient with juvenile idiopathic arthritis (JIA) is best monitored with standardized and validated tools to measure joint changes over time. Treatment approaches are best indicated if the clinicians are aware of the structural status of the joint at a given time, especially in anatomically deep joints for which clinical assessment is limited. Magnetic resonance imaging (MRI) is of utmost importance for assessment of deep joints and extra-articular soft tissue of the entire body for which ultrasound may be suboptimal...
August 26, 2023: Japanese Journal of Radiology
Yuzo Yamasaki, Takeshi Kamitani, Koji Sagiyama, Takuya Hino, Megumi Kisanuki, Kosuke Tabata, Takuro Isoda, Yoshiyuki Kitamura, Kohtaro Abe, Kazuya Hosokawa, Daisuke Toyomura, Shohei Moriyama, Masateru Kawakubo, Hidetake Yabuuchi, Kousei Ishigami
Dynamic chest radiography (DCR) is a novel functional radiographic imaging technique that can be used to visualize pulmonary perfusion without using contrast media. Although it has many advantages and clinical utility, most radiologists are unfamiliar with this technique because of its novelty. This review aims to (1) explain the basic principles of lung perfusion assessment using DCR, (2) discuss the advantages of DCR over other imaging modalities, and (3) review multiple specific clinical applications of DCR for pulmonary vascular diseases and compare them with other imaging modalities...
August 26, 2023: Japanese Journal of Radiology
Akira Yamamoto, Tsutomu Tamada, Atsushi Higaki, Yuki Arita, Yoshiko Ueno, Takamichi Murakami, Masahiro Jinzaki
OBJECTIVES: To ascertain the clinical behaviors of unclassified renal cell carcinoma (RCC) and its characteristic imaging findings on CT and MRI. METHODS: Subjects in this retrospective study were 10 patients who had received a histological diagnosis of unclassified RCC based on World Health Organization (WHO) 2022 and who had undergone CT and/or MRI prior to surgery. In terms of clinical behaviors, TNM classification, stage, postoperative recurrence, time to recurrence, and postoperative survival were evaluated...
August 19, 2023: Japanese Journal of Radiology
Takaaki Nakashima, Keiji Matsumoto, Tadamasa Yoshitake, Hiroaki Wakiyama, Osamu Hisano, Ryuji Uehara, Masanori Takaki, Takeshi Oshima, Hideaki Yahata, Kousei Ishigami
PURPOSE: This study evaluated the efficacy and safety of transvaginal approach combined intracavitary and interstitial brachytherapy (IC/IS BT) assisted by transrectal ultrasound (TRUS) for treatment of locally advanced cervical cancer (LACC). MATERIALS AND METHODS: A total of 30 patients of LACC treated with external beam radiotherapy and IC/IS BT via transvaginal approach assisted by transrectal ultrasound were observed retrospectively. The 2-year local control (LC), progression-free survival (PFS), and overall survival (OS) were analyzed using the Kaplan-Meier method...
August 17, 2023: Japanese Journal of Radiology
Min Zhang, Wenwen Yang, Yuhang Yuan, Zhikang Liu, Xiaolei Yue, Xiong Cao, Biao Han
PURPOSE: This meta-analysis evaluated the diagnostic accuracy and diagnostic value of [18 F]FDG PET/MRI for mediastinal lymph node staging of NSCLC. METHODS: Relevant articles in PubMed, Embase, Web of Science, and the Cochrane Library were searched until January 2023. Research evaluating [18 F]FDG PET/MRI for mediastinal lymph node staging of NSCLC was included. Pooled estimates of sensitivity, specificity, PLR, and NLR were calculated by the "Stata" software. RESULTS: Nine researches were included, containing 618 patients...
August 11, 2023: Japanese Journal of Radiology
Ruowei Tang, Jia Li, Pengfei Zhao, Zhengyu Zhang, Hongxia Yin, Heyu Ding, Ning Xu, Zhenghan Yang, Zhenchang Wang
PURPOSE: Imaging diagnosis of stapes fixation (SF) is challenging owing to a lack of definite evidence. We developed a comprehensive machine learning (ML) model to identify SF on ultra-high-resolution CT. MATERIALS AND METHODS: We retrospectively enrolled 109 participants (143 ears) and divided them into the training set (115 ears) and test set (28 ears). Stapes mobility (SF or non-SF) was determined by surgical inspection. In the ML analysis, rectangular regions of interest were placed on consecutive axial slices in the training set...
August 10, 2023: Japanese Journal of Radiology
Takashi Yoshiura, Shigeru Kiryu
No abstract text is available yet for this article.
August 4, 2023: Japanese Journal of Radiology
Daiju Ueda, Taichi Kakinuma, Shohei Fujita, Koji Kamagata, Yasutaka Fushimi, Rintaro Ito, Yusuke Matsui, Taiki Nozaki, Takeshi Nakaura, Noriyuki Fujima, Fuminari Tatsugami, Masahiro Yanagawa, Kenji Hirata, Akira Yamada, Takahiro Tsuboyama, Mariko Kawamura, Tomoyuki Fujioka, Shinji Naganawa
In this review, we address the issue of fairness in the clinical integration of artificial intelligence (AI) in the medical field. As the clinical adoption of deep learning algorithms, a subfield of AI, progresses, concerns have arisen regarding the impact of AI biases and discrimination on patient health. This review aims to provide a comprehensive overview of concerns associated with AI fairness; discuss strategies to mitigate AI biases; and emphasize the need for cooperation among physicians, AI researchers, AI developers, policymakers, and patients to ensure equitable AI integration...
August 4, 2023: Japanese Journal of Radiology
Masatoyo Nakajo, Megumi Jinguji, Soichiro Ito, Atushi Tani, Mitsuho Hirahara, Takashi Yoshiura
Machine learning (ML) analyses using 18 F-fluorodeoxyglucose (18 F-FDG) positron emission tomography (PET)/computed tomography (CT) radiomics features have been applied in the field of oncology. The current review aimed to summarize the current clinical articles about 18 F-FDG PET/CT radiomics-based ML analyses to solve issues in classifying or constructing prediction models for several types of tumors. In these studies, lung and mediastinal tumors were the most commonly evaluated lesions, followed by lymphatic, abdominal, head and neck, breast, gynecological, and other types of tumors...
August 1, 2023: Japanese Journal of Radiology
Nayu Hamabuchi, Yoshiharu Ohno, Hirona Kimata, Yuya Ito, Kenji Fujii, Naruomi Akino, Daisuke Takenaka, Takeshi Yoshikawa, Yuka Oshima, Takahiro Matsuyama, Hiroyuki Nagata, Takahiro Ueda, Hirotaka Ikeda, Yoshiyuki Ozawa, Hiroshi Toyama
PURPOSE: Deep learning reconstruction (DLR) has been introduced by major vendors, tested for CT examinations of a variety of organs, and compared with other reconstruction methods. The purpose of this study was to compare the capabilities of DLR for image quality improvement and lung texture evaluation with those of hybrid-type iterative reconstruction (IR) for standard-, reduced- and ultra-low-dose CTs (SDCT, RDCT and ULDCT) obtained with high-definition CT (HDCT) and reconstructed at 0...
July 27, 2023: Japanese Journal of Radiology
Shigeko Kuwashima
Fetal MRI is performed to evaluate the brain in cases where an abnormality is detected by ultrasonography (US). Fetal MRI has higher contrast resolution than US. Because the fetal brain is dynamic structure, it is important to know the normal appearance of the brain at different gestational age to be better able to identify abnormalities using MRI. Fast imaging sequences to minimize artifact from fetal motion are required. The main sequences used are ultrafast T2 weighted imaging. Similar to pediatric neuroimaging, images are acquired in the axial, sagittal, and coronal planes...
July 26, 2023: Japanese Journal of Radiology
Suvipaporn Siripornpitak, Apichaya Sriprachyakul, Worakan Promphan, Pirapat Mokarapong, Suthep Wanitkun
No abstract text is available yet for this article.
July 24, 2023: Japanese Journal of Radiology
Yusuke Nishimuta, Daisuke Tsurumaru
No abstract text is available yet for this article.
July 21, 2023: Japanese Journal of Radiology
Daisuke Tsurumaru, Yusuke Nishimuta, Satohiro Kai, Eiji Oki, Yosuke Minoda, Kousei Ishigami
PURPOSE: Small gastrointestinal stromal tumors (GISTs) can generally have nonspecific CT findings similar to those with benign submucosal tumors of the stomach. The purpose of this study was to explore the potential dual-layer dual-energy CT (dlDECT) parameters to differentiate small-sized (≤ 4 cm) GISTs from leiomyomas of the stomach. MATERIALS AND METHODS: This retrospective study included 26 SMTs ≤ 4 cm in diameter with pathological confirmation of either GIST (n = 17) or leiomyoma (n = 9) from May 2018 to January 2022...
July 19, 2023: Japanese Journal of Radiology
Norimi Nishiyama, Takanori Masuda, Junnichi Nakagawa, Keisuke Terami, Takeshi Nakaura
OBJECTIVES: To evaluate the depiction of wrist tendons in virtual monochromatic images (VMIs) during a dual-energy CT (DE-CT) with the VMI image of conventional equivalent to 120 kVp. MATERIALS AND METHODS: Using Catphan600 and phantom analysis software for CT evaluation, measurements of VMI in a DE-CT were performed corresponding to the tube voltages of single-energy CT at 120 kVp. Using a Discovery CT750 HD CT scanner (GE Healthcare) with DE-CT technology, 73 patients were scanned...
July 18, 2023: Japanese Journal of Radiology
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