Journal of Medical Ultrasonics最新文献

Discussion of mechanism behind "bamboo blind" sign observed in fatty liver parenchyma. 脂肪肝实质“竹盲”征的机制探讨。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-10-10 DOI: 10.1007/s10396-026-01696-8

Naohisa Kamiyama, Yasukiyo Sumino, Kenichi Maruyama, Yasushi Matsukiyo, Noritaka Wakui, Masao Shinohara

{"title":"Discussion of mechanism behind \"bamboo blind\" sign observed in fatty liver parenchyma.","authors":"Naohisa Kamiyama, Yasukiyo Sumino, Kenichi Maruyama, Yasushi Matsukiyo, Noritaka Wakui, Masao Shinohara","doi":"10.1007/s10396-026-01696-8","DOIUrl":"https://doi.org/10.1007/s10396-026-01696-8","url":null,"abstract":"Purpose: To elucidate the mechanism behind the so-called \"bamboo blind\" sign frequently observed on B-mode images as multiple low-echoic lines in nonalcoholic steatohepatitis and highly fatty liver cases.Methods: Six types of acoustic shadowing artifacts that might be the cause of the bamboo blind sign were defined. B-mode images were acquired for 21 fatty liver cases (inc. 9 highly fatty liver cases). The cases were then pathologically diagnosed. A phantom experiment was also performed to investigate whether refraction occurs due to the gap of sound velocity between two different media.Results and discussion: The mechanism of the bamboo blind sign corresponded well to the acoustic shadowing from small vessels in the liver. The phantom experiment validated the same phenomenon at a larger gap in sound velocity, which can be regarded as the same level as that in highly fatty liver cases.Conclusion: The refraction between blood vessels and highly fatty liver parenchyma with decreased sound velocity is the dominant reason for the bamboo blind sign.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149168959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Longitudinal transvaginal neurosonographic evaluation of intracranial lesions in a fetus with tuberous sclerosis complex. 经阴道纵向神经超声对结节性硬化症胎儿颅内病变的评价。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-10-08 DOI: 10.1007/s10396-026-01691-z

Nana Matsuzawa, Yuka Yamamoto, Motoki Tanaka, Rie Seyama, Shun Masaoka, Asako Kumagai, Jun Takeda, Mitsuru Ikeno, Koji Kamagata, Yasuhisa Terao

{"title":"Longitudinal transvaginal neurosonographic evaluation of intracranial lesions in a fetus with tuberous sclerosis complex.","authors":"Nana Matsuzawa, Yuka Yamamoto, Motoki Tanaka, Rie Seyama, Shun Masaoka, Asako Kumagai, Jun Takeda, Mitsuru Ikeno, Koji Kamagata, Yasuhisa Terao","doi":"10.1007/s10396-026-01691-z","DOIUrl":"https://doi.org/10.1007/s10396-026-01691-z","url":null,"abstract":"Purpose: Tuberous sclerosis complex is often suspected prenatally when multiple cardiac rhabdomyomas are detected; however, fetal intracranial lesions may be difficult to identify. The purpose of this case report is to demonstrate the importance and utility of serial transvaginal neurosonography in fetuses with suspected tuberous sclerosis complex.Methods: We reviewed the prenatal and postnatal imaging findings and clinical course of this case.Results: The fetus was referred at 31 weeks' gestation because of multiple cardiac tumors and a paternal history of tuberous sclerosis complex. Transabdominal ultrasound showed no definite brain abnormality, whereas transvaginal neurosonography revealed multiple hyperechogenic cortical/subcortical lesions in the bilateral parietal lobes and subependymal nodules along the lateral ventricular walls. The largest suspected cortical/subcortical tuber was serially measured using transvaginal neurosonography and showed no apparent interval growth. Fetal magnetic resonance imaging (MRI) at 34 weeks did not clearly demonstrate the cortical/subcortical lesions, although subependymal nodules were suspected. Postnatal MRI confirmed multiple cortical/subcortical tubers, subependymal nodules, and radial migration lines, and genetic testing identified a known TSC2 missense variant. This case suggests that transvaginal neurosonography may complement fetal MRI in the prenatal assessment of intracranial lesions associated with tuberous sclerosis complex.Conclusion: This case highlights the usefulness of serial transvaginal neurosonography in fetuses with suspected tuberous sclerosis complex for detection and perinatal management.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149139082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel noninvasive technique for liver fibrosis evaluation using spatiotemporal analysis of strain elastography. 基于应变弹性成像时空分析的新型无创肝纤维化评估技术。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-10-07 DOI: 10.1007/s10396-026-01690-0

Tamaki Kobayashi, Takuma Nakatsuka, Megumi Hirokawa, Junichi Ishida, Masao Daimon, Masaya Sato, Ryosuke Tateishi, Makoto Kurano, Mitsuhiro Fujishiro

{"title":"Novel noninvasive technique for liver fibrosis evaluation using spatiotemporal analysis of strain elastography.","authors":"Tamaki Kobayashi, Takuma Nakatsuka, Megumi Hirokawa, Junichi Ishida, Masao Daimon, Masaya Sato, Ryosuke Tateishi, Makoto Kurano, Mitsuhiro Fujishiro","doi":"10.1007/s10396-026-01690-0","DOIUrl":"https://doi.org/10.1007/s10396-026-01690-0","url":null,"abstract":"Purpose: Strain elastography is often limited by its relative nature and failure to capture temporal changes. This study aimed to establish a novel quantitative strain index (Q-SI) integrating spatiotemporal analysis and evaluate its utility for assessing liver fibrosis.Methods: This prospective study included patients with chronic liver disease (CLD) or chronic heart failure (CHF) between June 2020 and March 2022. The Q-SI was established by applying Q-Analysis to spatiotemporal strain map data, averaging values over 5-10 cardiac cycles. Correlations with two-dimensional shear wave elastography (2D-SWE) and vibration-controlled transient elastography (VCTE) were assessed. Diagnostic performance in histological fibrosis staging was compared using areas under the curve (AUC).Results: A total of 201 participants (194 CLD, 7 CHF) were evaluated. In the CLD cohort, Q-SI showed a significant negative correlation with 2D-SWE (r = - 0.51, P <0.001) and VCTE (r = - 0.53, P <0.001). Q-SI also decreased significantly with advancing histological fibrosis stage. Diagnostic accuracy (AUC: ≥ F2, 0.74; ≥ F3, 0.73; F4, 0.84) was comparable to that of 2D-SWE (0.73, 0.76, and 0.76) and that of VCTE (0.77, 0.83, and 0.88). Unlike 2D-SWE and VCTE, Q-SI was not affected by high alanine aminotransferase levels. In the CHF cohort, the Q-SI correlated strongly with right atrial reservoir strain (r = 0.90, P < 0.01), an indicator of right atrial pressure, but not with left ventricular ejection fraction.Conclusion: Q-SI provides a strain-based assessment of liver fibrosis comparable to that of shear wave-based techniques, with potential resilience to inflammation and independence from left ventricular function.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149129104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reply to comment on RE: Ultrasound criteria for shallow T2 extrahepatic cholangiocarcinoma. 回复关于RE：浅T2肝外胆管癌超声诊断标准的评论。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-09-19 DOI: 10.1007/s10396-026-01687-9

Shinji Okaniwa

引用次数: 0

A nationwide survey of pregnant women on their experience with fetal ultrasound examination in Japan. 一项关于日本孕妇胎儿超声检查经验的全国性调查。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-09-16 DOI: 10.1007/s10396-026-01678-w

Aiko Sekine, Nahoko Shirato, Miwa Sakamoto, Tatsuko Ishii, Hiroki Nakabayashi, Takahiro Yamada, Kentaro Kurasawa, Shimasaki Miku, Kyoko Mimura, Kaori Muto, Akihiko Sekizawa

{"title":"A nationwide survey of pregnant women on their experience with fetal ultrasound examination in Japan.","authors":"Aiko Sekine, Nahoko Shirato, Miwa Sakamoto, Tatsuko Ishii, Hiroki Nakabayashi, Takahiro Yamada, Kentaro Kurasawa, Shimasaki Miku, Kyoko Mimura, Kaori Muto, Akihiko Sekizawa","doi":"10.1007/s10396-026-01678-w","DOIUrl":"https://doi.org/10.1007/s10396-026-01678-w","url":null,"abstract":"Purpose: Fetal ultrasound examination (FUSE) is a prenatal screening test that can detect fetal structural abnormalities before birth. The purpose of this study was to clarify how pregnant women perceive FUSE and what they expect from it.Methods: A questionnaire survey comprising 21 questions was conducted using the \"Baby Plus\" application for pregnant women. The response period was from November 8 to November 30, 2023. The participants were women who were at least 20 weeks of gestation and postpartum mothers within 3 months of delivery. Statistical analyses were performed using the chi-square test.Results: Responses were received from 1,100 women. Sixty-six percent of the women recognized the differences between FUSE and routine ultrasonography. Forty-nine percent had undergone or planned to undergo FUSE, and 87% of those had received an explanation about the test. Many women expressed a desire for detailed explanations about the examination itself. Although less common, some women indicated that they did not wish to undergo fetal ultrasound examinations or learn about fetal abnormalities. Approximately 70% of women reported that they would consider termination of pregnancy if fetal abnormalities were detected.Conclusion: There may be a mismatch between pregnant women's expectations regarding FUSE and the way it is currently provided, including the timing of the examination and the explanations given. To help reduce this mismatch and support informed decision-making among pregnant women, greater standardization of FUSE practices and individualized explanations may be beneficial.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148983468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ovarian cancer mimicking pancreatic cancer. 模仿胰腺癌的卵巢癌。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-09-15 DOI: 10.1007/s10396-026-01684-y

Takafumi Nakagawa, Akihiko Kida, Yuji Hodo, Yukihiro Shirota, Taro Yamashita

引用次数: 0

Ultrasound-guided radial nerve mapping during external fixation for elbow trauma: a case series of 13 patients. 超声引导下肘关节外固定术中桡神经定位：附13例病例分析。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-09-12 DOI: 10.1007/s10396-026-01685-x

Kodai Okano, Koichi Yano, Yasunori Kaneshiro, Takuya Yokoi, Teruo Kita

{"title":"Ultrasound-guided radial nerve mapping during external fixation for elbow trauma: a case series of 13 patients.","authors":"Kodai Okano, Koichi Yano, Yasunori Kaneshiro, Takuya Yokoi, Teruo Kita","doi":"10.1007/s10396-026-01685-x","DOIUrl":"https://doi.org/10.1007/s10396-026-01685-x","url":null,"abstract":"Purpose: External fixation is used in damage control surgeries for severe elbow trauma. However, complications such as pin-site fractures, pin-site infections, and radial nerve injury can occur. Preoperative ultrasound guidance facilitates radial nerve identification and may reduce the risk of nerve injury during surgical pin placement. We aimed to evaluate the clinical use of ultrasound-guided radial nerve mapping during external fixation for severe elbow trauma and assess the occurrence of postoperative radial nerve palsy.Methods: This retrospective case series included 13 patients who underwent external fixation for severe elbow trauma between April 2015 and October 2023. Patients with active infections, hinged external fixators, external fixators used as definitive treatment, or nerve palsy after injury were excluded. The course of the radial nerve was marked using ultrasonography prior to pin insertion, and pins were inserted via a small skin incision. Complications related to external fixation were assessed.Results: The median patient age was 65 years (IQR, 47-72 years) and the median follow-up duration was 700 days (IQR, 475-742 days). None of the patients had radial nerve palsy or pin-site infection. One patient had a pin-site fracture. All patients successfully underwent secondary surgery within a median of 10 days (IQR, 7-13 days) after the external fixation.Conclusion: There were no cases of radial nerve palsy detected with ultrasound-guided radial nerve mapping after external fixation for severe elbow trauma.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Serpiginous tract sign on contrast-enhanced ultrasonography in acute fascioliasis. 急性筋膜吸虫病的超声造影显示蛇状道征象。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-09-10 DOI: 10.1007/s10396-026-01683-z

Takeru Ichikawa, Naoki Yoshioka, Shiori Nakamura, Yuki Kojima, Hajime Sumi, Masao Doisaki, Naoto Kawabe

引用次数: 0

An unexpected aorto-right atrial fistula following cardiopulmonary bypass. 体外循环术后出现意外的主动脉-右心房瘘。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-08-29 DOI: 10.1007/s10396-026-01681-1

Hidesato Fujito, Yuki Saito, Makoto Taoka, Masashi Tanaka, Yasuo Okumura

引用次数: 0

The clinical utility and diagnostic performance of transabdominal contrast-enhanced ultrasonography using Sonazoid for pancreatic diseases: a narrative review. 应用索那唑类药物经腹超声造影诊断胰腺疾病的临床应用及诊断价值：综述。

IF 2.1 4区医学

Journal of Medical Ultrasonics Pub Date : 2026-08-29 DOI: 10.1007/s10396-026-01674-0

Atsushi Sofuni, Shuntaro Mukai, Kazumasa Nagai, Hiroyuki Kojima, Takao Itoi

{"title":"The clinical utility and diagnostic performance of transabdominal contrast-enhanced ultrasonography using Sonazoid for pancreatic diseases: a narrative review.","authors":"Atsushi Sofuni, Shuntaro Mukai, Kazumasa Nagai, Hiroyuki Kojima, Takao Itoi","doi":"10.1007/s10396-026-01674-0","DOIUrl":"https://doi.org/10.1007/s10396-026-01674-0","url":null,"abstract":"This review aims to evaluate the clinical utility of contrast-enhanced ultrasonography (CEUS) in the differential diagnosis and management of solid and cystic pancreatic lesions. We reviewed the characteristic enhancement patterns of various solid and cystic pancreatic diseases, including pancreatic ductal adenocarcinoma (PDAC), mass-forming pancreatitis (MFP), focal autoimmune pancreatitis (AIP), pancreatic neuroendocrine neoplasms (PNENs), solid pseudopapillary neoplasms (SPNs), metastatic tumors, intraductal papillary mucinous neoplasms (IPMNs), serous cystic neoplasms (SCNs), and mucinous cystic neoplasms (MCNs). We also analyzed the role of quantitative perfusion analysis and summarized diagnostic performance based on multicenter studies and meta-analyses. In PDAC, the \"irregular rolling sign\" and early washout under a hypovascular pattern are critical diagnostic markers reflecting histological desmoplasia. Conversely, MFP typically shows diffuse isovascularity. CEUS facilitates the differentiation of malignant mural nodules from mucus plugs in IPMN with high accuracy. Quantitative perfusion analysis (QPA) using time-intensity curves (TIC) provides objective metrics like peak intensity (PI) and area under the curve (AUC), enhancing diagnostic objectivity. Large-scale studies, such as the Pancreatic Multicenter Ultrasound Study (PAMUS), and several meta-analyses have demonstrated that CEUS achieves a pooled sensitivity of 86-90% and specificity of 75-88% for pancreatic cancer, outperforming or equaling conventional CT and B-mode ultrasound. CEUS is a minimally invasive, rapid, and highly accurate modality that provides essential hemodynamic information. It should be considered a valuable complementary imaging modality for the initial evaluation and stratification of pancreatic neoplastic lesions, particularly when detailed hemodynamic assessment is required alongside conventional screening.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148857910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0