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Journal of Medical Ultrasonics

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https://www.readbyqxmd.com/read/29243129/contrast-enhanced-ultrasound-for-needle-biopsy-of-central-lung-cancer-with-atelectasis
#1
Zhikai Lei, Jun Lou, Lingyun Bao, Zhuying Lv
PURPOSE: Contrast-enhanced ultrasound (CEUS) can distinguish between central lung cancer and atelectatic lung tissue. The aim of this study was to explore the clinical value of CEUS for biopsy in patients with central lung cancer with obstructive atelectasis. METHODS: One hundred and twelve patients were selected and CEUS was performed to display central lung cancer and atelectatic lung tissue. The front edge of central lung cancer was punctured with a needle, avoiding the necrotic area, under the guidance of CEUS...
December 14, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29236196/thoracoabdominal-aortic-mural-and-floating-thrombus-extending-into-superior-mesenteric-artery
#2
Sedat Giray Kandemirli, Ozan Onur Balkanay, Muhammad Osama Awiwi, Eser Durmaz, Deniz Goksedef, Nil Comunoglu
Thrombus in the thoracic aorta not related to aneurysm or atherosclerosis is a rare clinical entity with a limited number of cases reported. Floating thrombus is defined as non-adherent part of the thrombus floating within the aortic lumen. Herein, we present a 48-year-old woman who presented with progressive midline dull, aching abdominal pain of 2-day duration. Thoracoabdominal computed tomography revealed a free floating thrombus extending from the aortic arch into the superior mesenteric artery. Transesophageal echocardiography confirmed the findings of a thrombus extending through the aortic arch...
December 13, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29235065/the-intra-conduit-release-method-is-useful-for-avoiding-migration-of-metallic-stents-during-eus-guided-hepaticogastrostomy-with-video
#3
Daisuke Uchida, Hirofumi Kawamoto, Hironari Kato, Daisuke Goto, Takeshi Tomoda, Kazuyuki Matsumoto, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada
PURPOSE: Although EUS-guided hepaticogastrostomy (EUS-HGS) with a covered self-expandable metal stent (SEMS) is a useful procedure, it is associated with severe adverse events, including stent migration. We, therefore, developed an intra-conduit release method, and investigated whether the technique yields a safer and more stable procedure. METHODS: The intra-conduit release method is a procedure to release the SEMS in the working channel conduit of the scope for anchoring between the liver and stomach to avoid stent migration...
December 13, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29222602/endoscopic-ultrasound-guided-biliary-drainage-using-a-newly-designed-metal-stent-with-a-thin-delivery-system-a-preclinical-study-in-phantom-and-porcine-models
#4
Kosuke Minaga, Masayuki Kitano, Masahiro Itonaga, Hajime Imai, Takeshi Miyata, Kentaro Yamao, Takashi Tamura, Junya Nuta, Kenji Warigaya, Masatoshi Kudo
PURPOSE: This study was designed to evaluate the feasibility and safety of a newly designed self-expandable metal stent for endoscopic ultrasound-guided biliary drainage (EUS-BD) when it was delivered via three different stent delivery systems: a 7.5Fr delivery catheter with a bullet-shaped tip (7.5Fr-bullet), a 7Fr catheter with a bullet-shaped tip (7Fr-bullet), or a 7Fr catheter with a tee-shaped tip (7Fr-tee). METHODS: This experimental study utilized a porcine model of biliary dilatation involving ten pigs...
December 8, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29218461/triphasic-mitral-inflow-pattern-associated-with-hemodynamic-deterioration-in-anemia-or-mitral-regurgitation-a-report-of-two-cases
#5
Ikuo Misumi, Masanobu Ishii
We present two cases with a mid-diastolic mitral inflow peak called an "L wave" due to underlying diseases. Case 1 was an 81-year-old woman with severe anemia (hemoglobin level of 3.9 g/dL). Pulsed Doppler echocardiography showed an L wave that disappeared after transfusion of red cell concentrates. Case 2 was a 72-year-old woman with severe mitral regurgitation due to ruptured chordae tendineae. Pulsed Doppler echocardiography showed an L wave that disappeared after mitral valve repair. The present report suggests that both severe anemia and mitral regurgitation might have contributed to L wave formation, which suggests hemodynamic deterioration...
December 7, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29177930/value-of-in-vitro-acoustic-radiation-force-impulse-application-on-uterine-adenomyosis
#6
Tevfik Berk Bildaci, Halime Cevik, Birnur Yilmaz, Guldeniz Aksan Desteli
PURPOSE: Adenomyosis is the presence of endometrial glandular and stromal tissue in the myometrium. This phenomenon can be the cause of excessive bleeding and menstrual pain in premenopausal women. Diagnosis of adenomyosis may present difficulty with conventional methods such as ultrasound and magnetic resonance imaging. Frequently, diagnosis is accomplished retrospectively based on the hysterectomy specimen. MATERIALS AND METHODS: This is a prospective case control study done in vitro on 90 patients' hysterectomy specimens...
November 24, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29170884/is-retrograde-blood-flow-of-aortic-isthmus-useful-for-the-prenatal-screening-of-coarctation-of-the-aorta-by-fetal-color-doppler-echocardiography-a-preliminary-study
#7
Hiroshi Kawamura, Noboru Inamura, Yuka Inoue, Yukiko Kawazu, Futoshi Kayatani, Nobuaki Mitsuda
PURPOSE: To validate the relationship between retrograde blood flow in the aortic isthmus (AoI-R) by color Doppler in fetal echocardiography and postnatal coarctation of the aorta (CoA) diagnosed as isthmus narrowing. METHODS: This was a retrospective study of 22 cases of prenatally suspected simple CoA or CoA with small ventricular septum defect based on fetal echocardiography performed by pediatric cardiologists in our hospital. Gestational age at the first detection of AoI-R and the optimal cut-off value for the prediction of postnatal CoA were mainly evaluated according to the postnatal diagnosis of CoA...
November 23, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29159576/an-experience-of-second-trimester-anhydramnios-salvaged-by-single-amnioinfusion
#8
Shingo Io, Eiji Kondoh, Yoshitsugu Chigusa, Hirohiko Tani, Junzo Hamanishi, Ikuo Konishi
Second-trimester anhydramnios, which is primarily caused by ruptured membranes, placental dysfunction, or congenital renal malformations, is associated with high perinatal morbidity and mortality. Although amnioinfusion temporarily increases amniotic fluid volume, it does not generally provide a fundamental solution. We describe a case of second-trimester anhydramnios with an umbilical cord factor, wherein single amnioinfusion may have successfully broken a vicious circle involving non-reassuring fetal status...
November 20, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29147816/development-of-pseudoaneurysm-in-cesarean-section-scar-pregnancy-a-case-report-and-literature-review
#9
Shunki Kiyokawa, Tatsuyuki Chiyoda, Kazunori Ueno, Keiko Saotome, Seon-Hye Kim, Sakura Nakada
Cesarean scar pregnancy (CSP) is a rare type of ectopic pregnancy. It is becoming more common, but it can lead to uterine rupture and severe hemorrhage. Here, we report a case of a 37-year-old woman with CSP complicated with pseudoaneurysm. The pseudoaneurysm emerged following focal injection of methotrexate (MTX) and potassium chloride with systemic MTX treatment. Due to a risk of sudden bleeding, uterine artery embolization (UAE) was recommended, but the patient hoped to avoid this if possible. Because the serum human chorionic gonadotropin level and the gestational sac were still persistent, dilation and curettage were performed with interventional radiologists on standby...
November 16, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29128938/liver-fibrosis-noninvasive-assessment-using-supersonic-shear-imaging-and-fib4-index-in-patients-with-non-alcoholic-fatty-liver-disease
#10
Hirohito Takeuchi, Katsutoshi Sugimoto, Hisashi Oshiro, Kunio Iwatsuka, Shin Kono, Yu Yoshimasu, Yoshitaka Kasai, Yoshihiro Furuichi, Kentaro Sakamaki, Takao Itoi
PURPOSE: Shear wave elastography (SWE) has been validated in chronic hepatitis C and B; however, limited data are available in non-alcoholic fatty liver disease (NAFLD). This study aimed to evaluate the accuracy of SWE and FIB4 index for the diagnosis of fibrosis in a cohort of consecutive patients with biopsy-proven NAFLD, and to evaluate the effects of other histologic parameters on SWE measurement. METHODS: Written informed consent was obtained from all patients, and this study was approved by our internal review board and ethics committee...
November 11, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29127536/correlation-between-microcirculation-and-contrast-enhanced-ultrasonography-after-crush-injury-of-limbs
#11
Chundong Zhang, Xin Wang, Jie Tang
PURPOSE: To explore the microcirculation formation mechanism of contrast-enhanced (CE) ultrasonography imaging performance in rabbits with limb muscle crush injury. METHODS: Seventy-two New Zealand white rabbits were randomly divided into two groups. A limb muscle crush injury model was created by airing a balloon cuff device with a force of 40 kpa. CE ultrasonography parameters were detected in the first group. In vivo microcirculation parameters were detected in the second group...
November 10, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29079942/intraoperative-detection-of-inferior-vena-caval-tumor-thrombus-extending-from-metastatic-lymph-node-of-renal-cell-carcinoma-using-ultrasonography
#12
Tomonori Minagawa, Daisuke Fukui, Kunihiko Shingu, Teruyuki Ogawa, Kenji Okada, Osamu Ishizuka
A 67-year-old man consulted our department with gross hematuria. Computed tomography (CT) revealed a huge renal tumor with a paracaval metastatic lymph node (mLN). Right total nephrectomy was planned for the renal tumor diagnosed as renal cell carcinoma preoperatively. Just before the resection of the renal vein and artery, intraoperative ultrasonography revealed an inferior vena caval tumor thrombus (IVCTT) extending from the mLN. Ultrasonography clearly and dynamically demonstrated a rhythmic flapping movement of the IVCTT with blood flow in the inferior vena cava...
October 27, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29075915/shear-wave-elastography-evaluation-in-pediatric-testicular-microlithiasis-a-comparative-study
#13
Zuhal Bayramoglu, Sedat Giray Kandemirli, Rana Gunoz Comert, Yunus Emre Akpinar, Emine Caliskan, Ravza Yilmaz, Tayfun Mevlut Oktar, Bilal Cetin, Mehmet Cingoz, Ibrahim Adaletli
PURPOSE: The aim of this study was to evaluate the testicular parenchyma in pediatric patients with testicular microlithiasis by shear wave elastography (SWE) and compare the values with normal control subjects. METHODS: Twenty-three patients previously diagnosed with testicular microlithiasis under follow-up for 20 ± 11 months were included in the study group. In the control group, 31 patients with no medical history that could affect testicular tissue were prospectively included...
October 26, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29075914/sonographic-assessment-of-subacromial-bursa-distension-during-arm-abduction-establishing-a-threshold-value-in-the-diagnosis-of-subacromial-impingement-syndrome
#14
Gokhan Soker, Bozkurt Gulek, Eda Soker, Omer Kaya, Ibrahim Inan, Muhammet Arslan, Kaan Esen, Derya Memis, Cengiz Yilmaz
PURPOSE: In this study, we aimed to establish a quantitative threshold value in the diagnosis of subacromial impingement syndrome by measuring the thickness of the subacromial bursa during abduction and adduction. MATERIALS AND METHODS: Forty-five patients with subacromial impingement syndrome and 54 healthy individuals underwent dynamic shoulder ultrasonography. The subacromial bursa, between the supraspinatus tendon margin and peribursal adipose tissue, was measured between the acromion and humeral head at its widest part...
October 26, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29063420/correction-to-altered-oscillation-of-doppler-derived-renal-and-renal-interlobar-venous-flow-velocities-in-hypertensive-and-diabetic-patients
#15
Yusuke Kudo, Taisei Mikami, Mutsumi Nishida, Kazunori Okada, Sanae Kaga, Nobuo Masauzi, Satomi Omotehara, Hitoshi Shibuya, Kaoru Kahata, Chikara Shimizu
In the original publication of this paper the legend of Fig. 1 should read as: Fig. 1 Pulsed Doppler flow velocity recordings of the aorta (a), right renal artery (b), right renal interlobar artery (c), inferior vena cava (d), right renal vein (e), and right renal interlobar vein (f). PSV peak systolic velocity, EDV end-diastolic velocity, V MAX maximum velocity, V MIN minimum velocity.
October 23, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29052791/potential-diagnostic-performance-of-contrast-enhanced-ultrasound-and-tumor-markers-in-differentiating-combined-hepatocellular-cholangiocarcinoma-from-hepatocellular-carcinoma-and-cholangiocarcinoma
#16
Xiao-Wen Huang, Yang Huang, Li-da Chen, Zhu Wang, Zheng Yang, Jin-Ya Liu, Xiao-Yan Xie, Ming-De Lu, Shun-Li Shen, Wei Wang
PURPOSE: To evaluate the diagnostic performance of the combination of tumor markers [alpha-fetoprotein (AFP) and carbohydrate antigen 19-9 (CA19-9)] and imaging features in differentiating combined hepatocellular-cholangiocarcinoma (CHC) from hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). METHODS: Forty consecutive patients with pathologically proven CHC were retrospectively evaluated with contrast-enhanced ultrasound (CEUS). Additionally, 40 HCC and 40 CC patients who were randomly selected from the same period served as a control group...
October 20, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29027063/inflammatory-myofibroblastic-tumors-of-the-breast-with-simultaneous-intracranial-lung-and-pancreas-involvement-ultrasonographic-findings-and-a-review-of-the-literature
#17
Mari Inoue, Tomoyuki Ohta, Hisashi Shioya, Shun Sato, Hiroyuki Takahashi, Norio Nakata, Chiaki Taniguchi, Megumi Hirano, Makiko Nishioka, Hironori Yamakawa
We encountered a case of inflammatory myofibroblastic tumor (IMT) of the breast with simultaneous intracranial, lung, and pancreas involvement. Here, we present the clinical imaging results and report the significance of sonographic findings of breast IMT along with a review of the literature. A 16-year-old girl with a history of subarachnoidal hemorrhage was admitted to our hospital due to tonic-clonic seizure. Computed tomography (CT) and magnetic resonance imaging (MRI) showed multiple intracranial, lung, and pancreas mass lesions and a solitary mass lesion in the right breast...
October 12, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29027037/optimal-surface-property-for-three-dimensional-echo-visualization
#18
Shunsuke Asakura, Saki Nishikawa, Kazumasa Orihashi, Yoshio Inoue
PURPOSE: Three-dimensional (3D) echo is a useful modality to guide off-pump intracardiac surgery, and this study aimed to determine the optimal surface property for minimizing echo dropout and grating lobes. METHODS: A total of 13 specimens were examined. The specimens were scanned while they were rotated from 0° to 90°, and en face views were recorded in the 3D zoom mode. Changes in brightness were compared with the surface profile, which was traced from microscopic images...
October 12, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28988329/ultrasonography-and-return-to-play-of-the-different-clinical-grading-of-quadriceps-contusions-a-case-series
#19
Rolando Junior L Torres, Soichi Hattori, Yuki Kato, Shin Yamada, Hiroshi Ohuchi
Prognostication of quadriceps contusion is based on the patient's active knee flexion after the injury. Unlike ultrasonography, clinical grading does not define the extent of soft tissue injury and may provide inaccurate time for return to play. The purposes of this report are to describe the ultrasound findings of the different clinical grading of quadriceps contusion and document the return to play of each case. Seven patients were evaluated in this series. Results showed discrepancies in the disability time between clinical grading and ultrasound findings...
October 7, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28956192/auto-strain-ratio-system-for-the-quality-control-of-breast-strain-elastography
#20
Kazutaka Nakashima, Akiko Mizutou, Sayaka Sakurai
PURPOSE: To determine the reproducibility, accuracy, and quantitative values of the auto strain ratio system (ASRS)-a newly developed strain elastography-based program. MATERIALS AND METHODS: First, the accuracy of ASRS was verified using a breast phantom. A prospective clinical study was then performed in patients. Two hundred and one women (mean age 52.4 years ± SD 14.5) with 232 breast lesions (177 benign and 55 malignant) were enrolled in this study. We assessed the correlation between ASRS and manual strain ratio (MSR), calculating the diagnostic performance to determine the cut-off...
September 27, 2017: Journal of Medical Ultrasonics
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