Journal of Medical Ultrasonics最新文献_第4页

Clinical application of photoacoustic imaging for cervical precursor lesion detection. 光声成像在宫颈癌前病变检测中的临床应用。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2025-01-01 Epub Date: 2024-10-03 DOI: 10.1007/s10396-024-01501-4

Kiguna Sei Okawa, Shinpei Okawa, Hidenori Sasa, Miya Ishihara

{"title":"Clinical application of photoacoustic imaging for cervical precursor lesion detection.","authors":"Kiguna Sei Okawa, Shinpei Okawa, Hidenori Sasa, Miya Ishihara","doi":"10.1007/s10396-024-01501-4","DOIUrl":"10.1007/s10396-024-01501-4","url":null,"abstract":"Purpose: Early diagnosis of a precursor lesion in the uterine cervix is an essential factor in uterine cervical cancer prevention. Although colposcopy is an established procedure for detecting high-risk patients, its accuracy and reproducibility are relatively low. Some supportive or alternative techniques to improve the early diagnosis of a precursor lesion have been studied, and correct diagnosis with high reliability using a minimally invasive, cost-effective technique has been pursued. This study aimed to examine the possibility of using photoacoustic (PA) imaging as a supportive technique to improve the accuracy of early diagnosis of cervical precursor lesions.Methods: A PA imaging system for microvessels was used to detect angiogenesis in severe lesions. A total of 21 patients who underwent surgical treatment and 114 outpatients who visited our colposcopy clinic were examined. A retrospective evaluation of PA images was performed as follows: (i) pathological assessment of the specific PA findings and (ii) retrospective evaluation of the severe lesion detection rate through PA.Results: PA image evaluation and pathological findings showed dense angiogenesis in a severe precursor lesion appearing as a \"hot spot\" in the PA image. A comparison with colposcopy findings was performed for accuracy evaluation, and the detection rate of severe lesions using PA was relatively high (positive predictive value, 84.5%; negative predictive value, 82.1%).Conclusion: Our results indicate the possibility of using PA imaging for early diagnosis of severe cervical precursor lesions. With its ability to yield quantitative information, PA imaging can improve ultrasound diagnosis.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":"119-129"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142367260","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

Factors affecting the accuracy of fetal cardiac ultrasound screening in the first trimester of pregnancy. 影响妊娠头三个月胎儿心脏超声筛查准确性的因素。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2025-01-01 Epub Date: 2024-11-01 DOI: 10.1007/s10396-024-01505-0

Shin Hashiramoto, Mayumi Kaneko, Hiroko Takita, Yuka Yamashita, Ryu Matsuoka, Akihiko Sekizawa

{"title":"Factors affecting the accuracy of fetal cardiac ultrasound screening in the first trimester of pregnancy.","authors":"Shin Hashiramoto, Mayumi Kaneko, Hiroko Takita, Yuka Yamashita, Ryu Matsuoka, Akihiko Sekizawa","doi":"10.1007/s10396-024-01505-0","DOIUrl":"10.1007/s10396-024-01505-0","url":null,"abstract":"Purpose: Most studies on the performance of first-trimester cardiac screening have concentrated on comparing the detection rate between different protocols and not on the actual reason for false-negative results. Herein, we report the performance of first-trimester congenital heart disease (CHD) screening and factors that may affect the detection rate of CHDs.Methods: This retrospective observational study included patients who underwent first-trimester screening and subsequently gave birth at our facility. We analyzed the performance of first-trimester screening for CHD and major CHD (CHD requiring cardiac surgery or interventional catheterization within 12 months of birth).Results: Of the 6614 fetuses included, 53 had CHD and 35 had major CHD. For the prenatal diagnosis of CHD, the detection rate, specificity, positive predictive value, negative predictive value, and first-trimester detection rate for CHD were 64.1%, 99.9%, 94.4%, 99.7%, and 82.9%, respectively; the respective values for major CHD were 85.7%, 99.96%, 93.75%, 99.92%, and 85.7%. The detection rate was not significantly different when classified by crown-rump length or number of fetuses. A weak correlation was observed between low detection rate of major CHD and lower maternal body mass index (BMI) (correlation ratio: 0.17). The detection rate was significantly higher when the fetus was scanned with its spine at the 5-7 o'clock position (posterior spine) than at other positions (odds ratio: 3.82, 95% confidence interval: 1.16-12.5, p = 0.02).Conclusion: Posterior spine contributes to an improved diagnostic rate in first-trimester CHD screening. In addition, sonographers must recognize that low maternal BMI is a risk factor of false-negative results.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":"131-138"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142562987","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

Convolutional neural network classification of ultrasound parametric images based on echo-envelope statistics for the quantitative diagnosis of liver steatosis. 基于回波包络统计的超声参数图像卷积神经网络分类，用于肝脏脂肪变性的定量诊断。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2025-01-01 Epub Date: 2024-11-23 DOI: 10.1007/s10396-024-01509-w

Akiho Isshiki, Kisako Fujiwara, Takayuki Kondo, Kenji Yoshida, Tadashi Yamaguchi, Shinnosuke Hirata

{"title":"Convolutional neural network classification of ultrasound parametric images based on echo-envelope statistics for the quantitative diagnosis of liver steatosis.","authors":"Akiho Isshiki, Kisako Fujiwara, Takayuki Kondo, Kenji Yoshida, Tadashi Yamaguchi, Shinnosuke Hirata","doi":"10.1007/s10396-024-01509-w","DOIUrl":"10.1007/s10396-024-01509-w","url":null,"abstract":"Purpose: Early detection and quantitative evaluation of liver steatosis are crucial. Therefore, this study investigated a method for classifying ultrasound images to fatty liver grades based on echo-envelope statistics (ES) and convolutional neural network (CNN) analyses.Methods: Three fatty liver grades, i.e., normal, mild, and moderate-to-severe, were defined using the thresholds of the magnetic resonance imaging-derived proton density fat fraction (MRI-PDFF). There were 10 cases of each grade, totaling 30 cases. To visualize the texture information affected by the deposition of fat droplets within the liver, the maps of first- and fourth-order moments and the heat maps formed from both moments were employed as parametric images derived from the ES. Several dozen to hundreds of regions of interest (ROIs) were extracted from the liver region in each parametric image. A total of 7680 ROIs were utilized for the transfer learning of a pretrained VGG-16 and classified using the transfer-learned VGG-16.Results: The classification accuracies of the ROIs in all types of the parametric images were approximately 46%. The fatty liver grade for each case was determined by hard voting on the classified ROIs within the case. In the case of the fourth-order moment maps, the classification accuracy of the cases through hard voting mostly increased to approximately 63%.Conclusions: The formation of parametric images derived from the ES and the CNN classification of the parametric images were proposed for the quantitative diagnosis of liver steatosis. In more than 60% of the cases, the fatty liver grade could be estimated solely using ultrasound images.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":"5-15"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799055/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of adipocytes on ultrasound evaluation of parathyroid adenomas. 脂肪细胞对甲状旁腺瘤超声诊断的影响。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-12-28 DOI: 10.1007/s10396-024-01511-2

Tomoko Fujimoto, Mitsuyoshi Hirokawa, Ayana Suzuki, Maki Oshita, Hiroyuki Yamaoka, Makoto Fujishima, Naoyoshi Onoda, Akira Miyauchi, Takashi Akamizu

{"title":"Impact of adipocytes on ultrasound evaluation of parathyroid adenomas.","authors":"Tomoko Fujimoto, Mitsuyoshi Hirokawa, Ayana Suzuki, Maki Oshita, Hiroyuki Yamaoka, Makoto Fujishima, Naoyoshi Onoda, Akira Miyauchi, Takashi Akamizu","doi":"10.1007/s10396-024-01511-2","DOIUrl":"https://doi.org/10.1007/s10396-024-01511-2","url":null,"abstract":"Purpose: Parathyroid lipoadenomas are difficult to recognize preoperatively; hence, they may remain undetected. Difficulty in recognition is thought to be due to the adipocytes present in the tumor. This study aimed to clarify the impact of adipocytes as a component of parathyroid adenomas on ultrasound evaluation.Methods: Eighteen parathyroid adenoma cases, in which the adipose tissue accounted for more than 10% of the tumors, were included in this study. Of these, five were consistent with lipoadenomas. Twenty-five consecutive patients with parathyroid adenoma without adipocytes were used as controls.Results: Ultrasonography revealed a lipoadenoma detection rate of 20.0%. This increased to 80.0% at re-examinations performed after obtaining information from other imaging modalities. Compared with parathyroid adenoma cases with no adipocytes or few adipocytes, the frequencies of ill-defined margins, iso- and/or hyperechogenicity, heterogeneous consistency with a two-tone pattern, poor vascular flow, no polar artery, and no hyperechoic line were significantly higher in parathyroid lipoadenoma cases. The hyperechoic and isoechoic areas in tumors with a two-tone pattern correspond to adipocyte- and parathyroid cell-rich areas, respectively. The lipoadenoma tumor sizes measured using ultrasound tended to be smaller than the actual sizes.Conclusions: The characteristic ultrasound findings of lipoadenomas were clearly different from those of parathyroid adenomas with or without adipocytes. We believe that our findings may contribute to an increased detection rate of lipoadenomas and allow us to consider them in the differential diagnosis.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142899416","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

Significant morphological changes in the right ventricular septal moderator band on echocardiography due to changes in right ventricular volume and pressure. 由于右心室容积和压力的改变，超声心动图右室间隔调节带出现明显形态学改变。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-12-27 DOI: 10.1007/s10396-024-01515-y

Haruka Noma, Naoyuki Otani, Shigeru Toyoda, Takanori Yasu

引用次数: 0

An approach for EUS-guided FNAB for suspected gallbladder malignancy. 一种在 EUS 引导下对疑似胆囊恶性肿瘤进行 FNAB 的方法。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-10-01 Epub Date: 2024-07-10 DOI: 10.1007/s10396-024-01479-z

Avinash Tiwari, Duncan Khanikar, Malay Sharma

引用次数: 0

Severe mitral regurgitation in non-hypertrophic cardiomyopathy caused by systolic anterior motion of the mitral valve. 二尖瓣收缩期前移导致非肥厚型心肌病的严重二尖瓣反流。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-10-01 Epub Date: 2024-07-10 DOI: 10.1007/s10396-024-01480-6

Tatsuya Aonuma, Naoko Kawabata, Ayumi Date, Erika Saito, Kazumi Akasaka, Hiroyuki Kamiya, Naoki Nakagawa

引用次数: 0

Ultrasonography and dermoscopy may have high predictive value for skin metastasis of renal cell carcinoma. 超声波检查和皮肤镜检查对肾细胞癌的皮肤转移有很高的预测价值。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-10-01 Epub Date: 2024-07-15 DOI: 10.1007/s10396-024-01477-1

Takayuki Suyama, Megumi Yokoyama, Kanna Takahashi, Yasunori Matsuki, Kazumoto Katagiri

引用次数: 0

Correction: Third-look contrast-enhanced ultrasonography plus needle biopsy for differential diagnosis of magnetic resonance imaging-only detected breast lesions. 更正：对仅通过磁共振成像检测到的乳腺病变进行鉴别诊断的第三视角对比增强超声波造影术和针刺活检术。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-10-01 DOI: 10.1007/s10396-024-01496-y

Tomohiro Miyake, Kenzo Shimazu

引用次数: 0

Third-look contrast-enhanced ultrasonography plus needle biopsy for differential diagnosis of magnetic resonance imaging-only detected breast lesions. 对仅通过磁共振成像检测到的乳腺病变进行鉴别诊断时，采用第三视角对比增强超声造影加针穿刺活检。

IF 1.9 4区医学

Journal of Medical Ultrasonics Pub Date : 2024-10-01 Epub Date: 2023-03-11 DOI: 10.1007/s10396-023-01298-8

Tomohiro Miyake, Kenzo Shimazu

{"title":"Third-look contrast-enhanced ultrasonography plus needle biopsy for differential diagnosis of magnetic resonance imaging-only detected breast lesions.","authors":"Tomohiro Miyake, Kenzo Shimazu","doi":"10.1007/s10396-023-01298-8","DOIUrl":"10.1007/s10396-023-01298-8","url":null,"abstract":"Research has shown that in approximately 20-30% of cases, breast lesions that were not detected on mammography (MG) or ultrasonography (US) were incidentally found during preoperative magnetic resonance imaging (MRI) examination for breast cancer. MRI-guided needle biopsy is recommended or considered for such MRI-only detected breast lesions invisible on second-look US, but many facilities in Japan cannot perform this biopsy procedure because it is expensive and time consuming. Thus, a simpler and more accessible diagnostic method is needed. Two studies to date have shown that third-look contrast-enhanced US (CEUS) plus needle biopsy for MRI-only detected breast lesions (i.e., MRI + /MG-/US-) that were not detected on second-look US showed moderate/high sensitivity (57.1 and 90.9%) and high specificity (100.0% in both studies) with no severe complications. In addition, the identification rate was higher for MRI-only lesions with a higher MRI BI-RADS category (i.e., category 4/5) than for those with a lower category (i.e., category 3). Despite the fact that there are limitations in our literature review, CEUS plus needle biopsy is a feasible and convenient diagnostic tool for MRI-only lesions invisible on second-look US and is expected to reduce the frequency of MRI-guided needle biopsy. When third-look CEUS does not reveal MRI-only lesions, a further indication for MRI-guided needle biopsy should be considered according to the BI-RADS category.","PeriodicalId":50130,"journal":{"name":"Journal of Medical Ultrasonics","volume":" ","pages":"599-604"},"PeriodicalIF":1.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11499426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9093632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0