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Journal of Medical Ultrasonics

Hitoshi Yoshimura, Tadashi Okano, Kentaro Inui, Hiroaki Nakamura
Intravesical bacillus Calmette-Guerin (BCG) therapy is an effective and safe immunotherapy for superficial bladder cancer. However, reactive arthritis (ReA) is reported as an adverse event in about 0.5-1% of patients receiving intravesical BCG therapy. ReA is known as a kind of spondyloarthritis, the main pathological finding of which is enthesitis. Here we report a patient with ReA induced by intravesical BCG therapy for bladder cancer, in whom the diagnosis of ReA was supported by ultrasonographic findings of enthesitis and synovitis...
July 10, 2018: Journal of Medical Ultrasonics
Midori Tanaka, Motoaki Sugawara, Kiyomi Niki, Yasuo Ogasawara
INTRODUCTION AND PURPOSE: Estimation of the contractility of the left ventricle during exercise is an important part of the rehabilitation protocol. It is known that cardiac contractility increases with an increase in heart rate. This phenomenon is called the force-frequency relation (FFR). Using wave intensity, we aimed to evaluate FFR noninvasively during graded exercise. METHODS: We enrolled 83 healthy subjects. Using ultrasonic diagnostic equipment, we measured wave intensity (WD), which was defined in terms of blood velocity and arterial diameter, in the carotid artery and heart rate (HR) before and during bicycle ergometer exercise...
June 15, 2018: Journal of Medical Ultrasonics
Michael Esser, Michael Bitzer, Manuel Kolb, Jan Fritz, Mustafa Kurucay, Christer Ruff, Marius Horger
PURPOSE: To investigate whether liver stiffness measured by acoustic radiation force impulse (ARFI) sonoelastography always correlates with the liver perfusion parameters quantified by perfusion CT in patients with known liver cirrhosis. METHODS: Sonoelastography and perfusion CT were performed in 50 patients (mean age 65.5; range 45-87 years) with liver cirrhosis, who were classified according to Child-Pugh into class A (30/50, 60%), B (17/50, 34%), and C (3/50, 6%)...
June 13, 2018: Journal of Medical Ultrasonics
Akihito Tampo
Real-time ultrasound guidance for central venous catheterization has become a standard technique. This technique has been reported to yield high success rates and fewer complications compared with landmark techniques. However, it can be risky when the practitioner does not possess proper knowledge and skills. Lose sight of the needle tip can lead to severe complications such as arterial puncture or pneumothorax. Also, posterior wall penetration of the target vessels must be avoided. Misplacement of the catheter to other vessels can sometimes occur, and may only be discovered after the catheterization procedure...
June 13, 2018: Journal of Medical Ultrasonics
Shin Takahashi, Yurie Takizawa, Satoshi Nakano, Kotaro Oyama
The case of a 16-year-old male patient with left renal artery stenosis due to fibromuscular dysplasia (FMD) and an atrophic kidney due to a right multicystic dysplastic kidney (MCDK) who presented with refractory hypertension is reported. On continuous Doppler imaging, the peak systolic velocity (PSV) at the stenotic site of the left renal artery was 404 cm/s. The FMD formed a "string-of-beads" appearance on computed tomographic angiography (CTA) and renal artery angiography. Percutaneous transluminal renal angioplasty (PTRA) with a balloon catheter was performed, after which the left renal artery returned to near normal, and his blood pressure decreased to within the normal range...
May 23, 2018: Journal of Medical Ultrasonics
Kazumi Fujioka, Minoru Oishi, Akira Fujioka, Tomohiro Nakayama
PURPOSE: Migraine is associated with vascular disorders, but the underlying mechanism is unknown. Nitric oxide (NO) sensitivity is believed to play a major role in migraine pathophysiology. We investigated flow-mediated vasodilatation (FMD) and nitroglycerin-mediated vasodilatation (NMD) of the brachial artery by means of a key molecular mediator, NO, in patients with migraine without aura in the interictal period whether the abnormality is found. METHODS: A total of 12 patients with migraine without aura and 12 matched healthy controls were enrolled in this study...
May 23, 2018: Journal of Medical Ultrasonics
Yuta Hagiwara, Rie Sasaki, Takahiro Shimizu, Kaima Soga, Chihiro Hatada, Motoki Miyauchi, Takanori Okamura, Masaru Sakurai, Hisanao Akiyama, Yasuhiro Hasegawa
Superb microvascular imaging (SMI) reduces motion artifacts significantly and allows visualization of low-velocity blood flow in vessels; thus, thrombi are clearly demonstrated compared to conventional B-mode and color Doppler imaging. Ultrasonographic images of the lower extremities of a 69-year-old woman with acute ischemic stroke complicated with deep vein thrombosis (DVT) are presented. Because SMI allows visualization of low-velocity blood flow, echo contrast between the thrombus and the surrounding flow makes it possible to clearly visualize the thrombus...
May 17, 2018: Journal of Medical Ultrasonics
Toru Kameda, Kumiko Uebayashi, Kazuko Wagai, Fukiko Kawai, Nobuyuki Taniguchi
PURPOSE: To assess the performance of a pocket-sized ultrasound device (PUD) for evaluating dilatation of the renal collecting system with high-end ultrasound devices (HUDs) as a reference standard. METHODS: One sonographer examined both kidneys using a PUD to evaluate dilatation of the collecting system. The grading of the dilatation ranged from 0 to 4. Immediately after the examination, another sonographer blinded to the previous results performed a formal examination with a HUD...
May 2, 2018: Journal of Medical Ultrasonics
Takuya Uemura, Tadashi Okano, Ema Onode, Takuya Yokoi, Kosuke Shintani, Mitsuhiro Okada, Hiroaki Nakamura
Flexor pollicis longus (FPL) tendon rupture is a major complication of volar locking plate fixation for distal radius fractures. The tendon rupture is usually caused by friction between the distal edge of the plate and the FPL tendon, and has been well detected recently with ultrasonography. Rarely, the volar locking plate itself entraps the FPL tendon, leading to its rupture. A 63-year-old man was consistently unable to flex his right thumb after previous surgery for a distal radius fracture at another hospital...
April 27, 2018: Journal of Medical Ultrasonics
Hiroyuki Hachiya
No abstract text is available yet for this article.
July 2018: Journal of Medical Ultrasonics
Masashi Hirooka, Yohei Koizumi, Yusuke Imai, Atsushi Yukimoto, Takao Watanabe, Osamu Yoshida, Masanori Abe, Yoichi Hiasa
PURPOSE: The aim of this study was to clarify whether ultrasound quantitative methods were positively correlated with volume of ascites evaluated by whole abdominopelvic CT. METHODS: Sixty-eight patients with cirrhotic ascites were retrospectively analyzed. First, to confirm that virtual ultrasonography (VUS) is an alternative method to conventional ultrasound, 22 patients underwent both conventional ultrasonography and VUS. Second, the efficacy of US quantitative methods (3-point method, 4-point method, 5-point method, and Matsumoto's method) was confirmed by VUS in 68 patients...
April 18, 2018: Journal of Medical Ultrasonics
Iclal Erdem Toslak, Matthew Stegman, Michael P Reiter, Güliz A Barkan, Dariusz Borys, Jennifer E Lim-Dunham
Kaposiform hemangioendothelioma (KHE) is a rare vascular tumor of early childhood and infancy. Kasabach-Merritt phenomenon, a common complication of KHE, is characterized by life-threatening thrombocytopenia, hemolytic anemia, and consumption coagulopathy. There may be atypical cases that do not present with Kasabach-Merritt phenomenon and do have atypical imaging findings. Knowledge of atypical imaging features may assist radiologists in identifying KHE. In this report, we present a 4-year-old case of KHE with atypical ultrasound findings...
April 10, 2018: Journal of Medical Ultrasonics
Vasanthapriya Subramaniyam, Akiko Saito, Katsutoshi Tokushige
An oral infection harboring Fusobacterium species can gain entrance to the liver via hematogenous spread in the form of septic embolus, and can thereby cause abscesses. Such spread, described as Lemierre syndrome, is life threatening. We present such a case history of a man in his mid-40s, who presented with infection and Fusobacterium liver abscess with an acute fulminant disease course. The initial diagnosis was arrived at by ultrasound imaging and blood investigations. He was treated with antibiotics, ultrasound-guided liver abscess drainage, and extraction of the infected molar tooth...
April 3, 2018: Journal of Medical Ultrasonics
Yasuharu Imai
No abstract text is available yet for this article.
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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...
April 2018: Journal of Medical Ultrasonics
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