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Morozov SV, Izranov VA. Methods of Ultrasound Spleen Morphometry. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:2123-2133. [PMID: 34845744 DOI: 10.1002/jum.15901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 11/04/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
This article presents a review of the methods of determining spleen size in sonography, computed tomography, and magnetic resonance imaging. The review aims to summarize the data on the methods of estimating the linear dimensions of the spleen and splenic volume and describe the physiological variability of spleen size depending on sex, age, and different physiological conditions. We systematized the methods used for measuring the spleen and presented them in the form of a table, analyzed the results of previous studies, and compared the accuracy of different methods of calculating the splenic volume using a variety of diagnostic methods.
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Affiliation(s)
- Sergey V Morozov
- Institute of Medicine, Immanuel Kant Baltic Federal University, Kaliningrad, Russian Federation
| | - Vladimir A Izranov
- Institute of Medicine, Immanuel Kant Baltic Federal University, Kaliningrad, Russian Federation
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Yu J, Yoon H, Khalifa YM, Emelianov SY. Design of a Volumetric Imaging Sequence Using a Vantage-256 Ultrasound Research Platform Multiplexed With a 1024-Element Fully Sampled Matrix Array. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2020; 67:248-257. [PMID: 31545718 PMCID: PMC7008949 DOI: 10.1109/tuffc.2019.2942557] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Ultrasound imaging using a matrix array allows real-time multi-planar volumetric imaging. To enhance image quality, the matrix array should provide fast volumetric ultrasound imaging with spatially consistent focusing in the lateral and elevational directions. However, because of the significantly increased data size, dealing with massive and continuous data acquisition is a significant challenge. We have designed an imaging acquisition sequence that handles volumetric data efficiently using a single 256-channel Verasonics ultrasound research platform multiplexed with a 1024-element matrix array. The developed sequence has been applied for building an ultrasonic pupilometer. Our results demonstrate the capability of the developed approach for structural visualization of an ex vivo porcine eye and the temporal response of the modeled eye pupil with moving iris at the volume rate of 30 Hz. Our study provides a fundamental ground for researchers to establish their own volumetric ultrasound imaging platform and could stimulate the development of new volumetric ultrasound approaches and applications.
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Jokisch F, Buchner A, Schulz GB, Grimm T, Weinhold P, Pfitzinger PL, Chaloupka M, Stief CG, Schlenker B, Clevert DA. Prospective evaluation of 4-D contrast-enhanced-ultrasound (CEUS) imaging in bladder tumors. Clin Hemorheol Microcirc 2019; 74:1-12. [PMID: 31743990 DOI: 10.3233/ch-199231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE The evaluation of the potential clinical benefit of four-dimensional ultrasound (4D-US) in the assessment of bladder cancer (BC). MATERIAL AND METHODS 20 patients with indication for cystoscopy for suspicion of bladder cancer were prospectively included in this study. All patients underwent two-dimensional ultrasound (2D-US), contrast enhanced ultrasound (CEUS) and real-time four-dimensional ultrasound (4D-US). All acquisitions were compared to each other in regard to image quality. This assessment was done using a 6 point scale (1 = best). All patients underwent subsequently cystoscopy with resection of the tumor (TURB), due a histopathological analysis was possible. RESULTS All examinations were performed successfully and no patient had to be excluded from the study. Patients acceptance of 4D-US was consistently good. No adverse events occurred. Image quality of real time 4D-US (score: 1.27±0.46) was significantly superior (p < 0.001) to both, conventional 2D-US (score: 2.33±0.62) and also to 2D-CEUS (score: 2.00±0.53). In terms of tumor detection no superiority was evident for 4D-US compared to 2D-US or in utilization of CEUS (sensitivity = 0.89; specificity = 1.00; positive predictive value = 1.00; negative predictive value = 0.50; AUC = 0.944; (95% CI: 07.43-0.998)). CONCLUSION The assessment of bladder cancer using real time 4D-US is feasible and improves the image quality and therefore also the precise anatomical consistency of intravesical tumor masses.
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Affiliation(s)
- F Jokisch
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - A Buchner
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - G B Schulz
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - T Grimm
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - P Weinhold
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - P L Pfitzinger
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - M Chaloupka
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - C G Stief
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - B Schlenker
- Department of Urology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - D-A Clevert
- Department of Clinical Radiology, Interdisciplinary Ultrasound-Center, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
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Miwa H, Numata K, Sugimori K, Kaneko T, Sakamaki K, Ueda M, Fukuda H, Tanaka K, Maeda S. Differential diagnosis of solid pancreatic lesions using contrast-enhanced three-dimensional ultrasonography. ACTA ACUST UNITED AC 2015; 39:988-99. [PMID: 24711063 PMCID: PMC4168219 DOI: 10.1007/s00261-014-0135-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Purpose To investigate the usefulness of contrast-enhanced three-dimensional ultrasonography (CE 3D US) for differential diagnosis of solid pancreatic lesions. Methods Eighty-five patients with solid pancreatic lesions who underwent CE 3D US were retrospectively analyzed. Sixty-four patients had pancreatic ductal adenocarcinoma (PDAC), 10 had mass-forming pancreatitis (MFP), and 11 had neuroendocrine tumor (NET). Two blinded readers evaluated the enhancement patterns using four features: vascularity in the arterial phase, vascularity in the venous phase, vessel location, and vessel form. Vascularity in both phases was classified as hypervascular, isovascular, or hypovascular. Vessel location was classified into peritumoral or intratumoral. Vessel form was classified into fine or irregular. Kappa values were used to assess inter-reader agreement. The institutional review board approved this study, and informed consent was obtained. Results Kappa values of the four features were 0.75, 0.72, 0.85, and 0.65, which were graded as good or excellent. The most typical combined enhancement pattern in PDAC was hypovascularity in both phases with peritumoral and irregular vessels; MFP was isovascular in both phases with intratumoral and fine vessels; and NETs were hypervascular in both phases with intratumoral and irregular vessels. The sensitivity and positive predictive value of the three patterns were 93.8% and 96.7% for the PDAC pattern, 80.0% and 100% for the MFP pattern, and 81.8%, and 69.2% for the NET pattern, respectively. The accuracy of these diagnostic criteria was 90.5%. Conclusion CE 3D US allows detailed visualization of the enhancement patterns of various pancreatic lesions and can be used for the differential diagnosis.
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Affiliation(s)
- Haruo Miwa
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Kazuya Sugimori
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Takashi Kaneko
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Kentaro Sakamaki
- Department of Biostatistics and Epidemiology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Michio Ueda
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Hiroyuki Fukuda
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Katsuaki Tanaka
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama, Kanagawa 232-0024 Japan
| | - Shin Maeda
- Division of Gastroenterology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004 Japan
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Yu MH, Lee JY, Kim JH, Han JK, Choi BI. Value of near-isovoxel ultrasound for evaluation of ductal communications with pancreatic cystic lesions: correlation with magnetic resonance cholangiopancreatography. ULTRASOUND IN MEDICINE & BIOLOGY 2013; 39:2279-2284. [PMID: 24139198 DOI: 10.1016/j.ultrasmedbio.2013.07.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Revised: 07/02/2013] [Accepted: 07/26/2013] [Indexed: 06/02/2023]
Abstract
The aim of this study was to determine the value of near-isovoxel ultrasound (ISUS) using xMATRIX technology in assessment of ductal communications with pancreatic cystic lesions. Twenty patients with pancreatic cystic lesions (n = 21) on magnetic resonance cholangiopancreatography (MRCP), underwent 2-D ultrasound (US) and subsequent ISUS using a matrix probe. Two observers assessed the presence of ductal communications with pancreatic cystic lesions for all MRCP, 2-D US, and ISUS images with multi-planar reformation, using a 5-point confidence scale. Weighted-κ statistics and intra-class correlation coefficients were calculated. Inter-observer agreement for MRCP, 2-D US and ISUS was moderate, fair and moderate (0.475, 0.222 and 0.472), respectively. The intra-class correlation coefficients between ISUS and MRCP was higher than that between 2-D US and MRCP (0.8706 vs. 0.5353, observer 1; 0.7206 vs. 0.4818, observer 2, respectively). Correlation and inter-observer agreement were better with MRCP than with 2-D US. We conclude that ISUS may be useful in evaluating ductal communications with pancreatic cystic lesions.
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Affiliation(s)
- Mi Hye Yu
- Department of Radiology and Institute of Radiation Medicine, Seoul National University Hospital, Seoul, Korea
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Clevert DA, Sterzik A, Braunagel M, Notohamiprodjo M, Graser A. [Modern imaging of kidney tumors]. Urologe A 2013; 52:515-26. [PMID: 23571801 DOI: 10.1007/s00120-012-3098-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
If a renal mass is suspected on clinical examination or ultrasound the finding has to be confirmed by cross-sectional imaging. Methods that are used include multidetector-row computed tomography (MDCT) and magnetic resonance imaging (MRI). Also contrast-enhanced ultrasound has been successfully implemented in renal imaging and now plays a major role in the differentiation of benign from malignant renal masses. In expert hands it can be used to show very faint vascularization and subtle enhancement. The MDCT technique benefits from the recently introduced dual energy technology that allows superior characterization of renal masses in a single-phase examination, thereby greatly reducing radiation exposure. For young patients and persons allergic to iodine MRI should be used and it provides excellent soft tissue contrast and visualizes contrast enhancement kinetics in multiphase examinations.This article aims at giving a comprehensive overview of these different imaging modalities, their clinical indications and contraindications, as well as a description of imaging findings of various renal masses.
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Affiliation(s)
- D-A Clevert
- Institut für Klinische Radiologie, Klinikum der Universität München, Marchioninistraße 15, 81377 München, Deutschland
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Destigter K. mHealth and developing countries: a successful obstetric care model in Uganda. Biomed Instrum Technol 2013; Suppl:41-4. [PMID: 23039775 DOI: 10.2345/0899-8205-46.s2.41] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Walas MK, Skoczylas K, Gierbliński I. Standards of the Polish Ultrasound Society - update. The liver, gallbladder and bile ducts examinations. J Ultrason 2012; 12:428-45. [PMID: 26673807 PMCID: PMC4603239 DOI: 10.15557/jou.2012.0031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 11/25/2012] [Accepted: 12/03/2012] [Indexed: 12/12/2022] Open
Abstract
Ultrasonography, which usually constitutes an initial imaging method of the gallbladder, liver and bile ducts diseases, allows for final diagnosis or determines another diagnostic step. The continuously progressing technological advancement forces to broaden the indications for ultrasound diagnostics and enables easier and more precise imaging of the tested structures. Performing the examination in accordance with current standards allows for the optimization of the sensitivity and specificity parameters of ultrasound examinations in the diagnosis of the liver, gallbladder and bile ducts pathologies as well as minimizes the probability of error-making. This article presents a recommended liver, gallbladder and bile ducts ultrasound technique which indicates an optimal positioning of the patient for the exam as well as the sites of the ultrasound transducer application. Minimum technical parameters of the apparatus have been specified with respect to the requirements of modern ultrasound techniques which enable imaging with the use of contrast agents and elastography. Furthermore, the article proposes a standard exam description containing essential patient-related data and provides required ultrasound evaluation parameters for the tested organs. Attention has been drawn to the appropriate manner of preparing the patient for the examination and the features of the tested structures have been presented. The article also contains a brief description of the liver, gallbladder and bile ducts diseases which are most often diagnosed by ultrasound examinations. Moreover, the use of elastography as well as contrast-enhanced examinations in the diagnostics of fibrosis and focal changes in the liver have been discussed. This article has been prepared on the basis of the Ultrasound Examination Standards of the Polish Ultrasound Society (2011) and updated with reference to the latest findings in pertinent literature.
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Affiliation(s)
- Maria Krystyna Walas
- Ośrodek USG i Diagnostyki Biopsyjnej, Katedra i Klinika Chorób Metabolicznych CMUJ, Kraków, Polska
| | - Krzysztof Skoczylas
- Ośrodek USG i Diagnostyki Biopsyjnej, Katedra i Klinika Chorób Metabolicznych CMUJ, Kraków, Polska
| | - Ireneusz Gierbliński
- Klinika Gastroenterologii Onkologicznej, Centrum Onkologii - Instytut im. Marii Skłodowskiej-Curie, Warszawa, Polska
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Abstract
Based on recent clinical practice guidelines, imaging is largely replacing pathology as the preferred diagnostic method for determination of hepatocellular carcinoma (HCC). A variety of imaging modalities, including ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI), nuclear medicine, and angiography, are currently used to examine patients with chronic liver disease and suspected HCC. Advancements in imaging techniques such as perfusion imaging, diffusion imaging, and elastography along with the development of new contrast media will further improve the ability to detect and characterize HCC. Early diagnosis of HCC is essential for prompt treatment, which may in turn improve prognosis. Considering the process of hepatocarcinogenesis, it is important to evaluate sequential changes via imaging which would help to differentiate HCC from premalignant or benign lesions. Recent innovations including multiphasic examinations, high-resolution imaging, and the increased functional capabilities available with contrast-enhanced US, multidetector row CT, and MRI have raised the standards for HCC diagnosis. Although hemodynamic features of nodules in the cirrhotic liver remain the main diagnostic criterion, newly developed cellspecific contrast agents have shown great possibilities for improved HCC diagnosis and may overcome the diagnostic dilemma associated with small or borderline hepatocellular lesions. In the 20th century paradigm of medical imaging, radiological diagnosis was based on morphological characteristics, but in the 21st century, a paradigm shift to include biomedical, physiological, functional, and genetic imaging is needed. A multidisciplinary team approach is necessary to foster an integrated approach to HCC imaging. By developing and combining new imaging modalities, all phases of HCC patient care, including screening, diagnosis, treatment, and therapy, can be dramatically improved.
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Affiliation(s)
| | - Byung Ihn Choi
- *Byung Ihn Choi, MD, Department of Radiology, Seoul National University Hospital, 101 Daehakro, Jongno-gu, Seoul 110-744 (Korea), Tel. +82 2 2072 2515, E-Mail
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Nemati MH. Mediastinal gossypiboma simulating a malignant tumour. Interact Cardiovasc Thorac Surg 2012; 15:783-5. [PMID: 22786789 DOI: 10.1093/icvts/ivs260] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Gossypiboma or textiloma are two terms used to describe any cotton matrix such as gauze pads left behind during an operation in the body cavities. They may lead to infections or abscess formations, or may mimic malignant tumours. Here, we present a woman with a history of a previous operation on her thorax who became symptomatic 25 years after the operation because of retained surgical gauzes covered by fibrinous materials with adhesions to the left lung. The cotton matrix had developed into a gossypiboma mimicking a mediastinal tumour.
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Affiliation(s)
- Mohammad Hassan Nemati
- Department of Cardiac Surgery, Faghihi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
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Clevert DA, Helck A, Paprottka PM, Schwarz F, Reiser MF. [Latest developments in ultrasound of the liver]. Radiologe 2012; 51:661-70. [PMID: 21847777 DOI: 10.1007/s00117-010-2124-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abdominal ultrasound (US) is often the first-line imaging modality used to assess focal liver lesions. Due to various new gray-scaled US techniques, such as tissue harmonic imaging (THI), spatial compounding technique and speckle reduction technique, as well as contrast-enhanced techniques, abdominal ultrasound nowadays has great potential regarding detection and characterization of focal liver lesions. Furthermore, image fusion with computed tomography (CT), magnetic resonance imaging (MRI) and 3D ultrasound will most likely help to improve clinical management before and after interventional procedures. This article illustrates the principles and clinical impact of recently developed techniques in the field of ultrasound.
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Affiliation(s)
- D-A Clevert
- Institut für Klinische Radiologie, Klinikum der Ludwig-Maximilians-Universität, Campus Grosshadern, München, Deutschland.
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Pilhatsch A, Riccabona M. Role and potential of modern ultrasound in pediatric abdominal imaging. ACTA ACUST UNITED AC 2011. [DOI: 10.2217/iim.11.32] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Elwagdy S, Ramadan R, Sabry AF, Elhawary M, Nabil M, Elkott MS, Samir F. Virtual gastroscopy: A preliminary study on the use of trans-abdominal, fast three-dimensional, colour-coded ultrasound in the evaluation of gastric mass lesions. Arab J Gastroenterol 2010. [DOI: 10.1016/j.ajg.2010.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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