Background: Diagnosis of abdominal aortic aneurysm (AAA) is usually incidental, and surgical treatment, when indicated, may be open or endovascular. The drawbacks of computed angiotomography (CTA) and the advantages of Doppler ultrasonography have led to the development of alternative follow-up protocols, comparing the two methods. Objective: To determine validity indices for Doppler ultrasonog...

Background: It is assumed in polycystic ovary syndrome (PCOS) that follicular development, maturation, ovulation and implantation are impaired due to hormonal imbalance and vascular impairment of the ovarian and uterine vasculatures. The mechanism of action of laparoscopic ovarian drilling (LOD) is largely unexplained. To date, only limited studies have been conducted utilizing 3D ultrasonograp...

Changes in intraovarian arterial blood flow were monitored by means of colour-coded and pulsed Doppler ultrasonography in Beagle bitches during the normal oestrous cycle (n = 11) and pregnancy (n = 3), and at PGF(2alpha)-induced luteolysis (n = 4). The ultrasonographic findings were related to the reproductive stage of the bitch, as determined by vaginoscopical and cytological criteria, and by ...

Hepatorenal failure, a well-recognized complication of established liver disease, is characterized by early renal hemodynamic changes (vasoconstriction) before clinically recognized kidney disease. This renal vasoconstriction (increased renal vascular resistance) should be detectable noninvasively by Doppler ultrasonography. We studied whether renal Doppler ultrasonography detects abnormalities...

Management of intrauterine growth retardation is an important issue in obstetric practice. Since the introduction of Doppler ultrasonography, the problems associated with screening, diagnosing, monitoring, and identifying foetuses at risk have decreased in recent years. Owing to the use of Doppler ultrasonography, there is now a trend towards early delivery.

A 53-year-old male with hepatocellular carcinoma underwent orthotopic liver transplantation. Preoperative computed tomography revealed main portal vein luminal narrowing by flat thrombi and the development of cavernous transformation. On post-transplantation day 1, thrombotic portal venous occlusion occurred, and emergency thrombectomy was performed. Subsequent Doppler ultrasonography and contr...

We have routinely performed ultrasonography as the first-choice examination of neck masses since 1985. At the Department of Head and Neck Surgery, Kanagawa Cancer Center, the percentage of patients with head and neck cancer and neck masses is very high, and cervical ultrasonography is performed on more than 1,000 patients per year, including referrals from other departments. In patients with he...

INTRODUCTION Pregnancy following successful embolisation of a uterine arteriovenous malformation (AVM) is rare. Hypovascularity of treated areas affecting placentation and fetal growth has been postulated to be the cause for adverse pregnancy outcomes. CLINICAL PICTURE A 37-year-old multiparous lady presented with anaemia from repeated heavy vaginal bleeding from an iatrogenic uterine AVM. Th...

Ultrasound is an ideal imaging tool for initial assessment of cervical lymph nodes in children. Grey scale ultrasound helps to evaluate the morphology of cervical nodes, whereas power Doppler ultrasound assesses the nodal vasculature. On grey scale ultrasound, useful sonographic features that help in identifying pathologic nodes include round contour, absence of echogenic hilus, intranodal necr...