Background: Pelvic arteriovenous malformations (AVMs) are rare but carries life-threatening consequences. Case Report: A 47-year-old multipara who had previously undergone four cesarean sections came for re-evaluation of a malignant ovarian new growth. She was asymptomatic. Repeat ultrasound revealed normal ovaries, and a cystic structure at the left adnexa with abundant mixing of colors, turbulent flow and pulsative waveforms on spectral Doppler. It arises from serpentine tubular structures from the uterine isthmus. Uterine artery aneurysm was considered. Magnetic resonance angiography confirmed the findings of aneurysm and pelvic arteriovenous malformation. The patient underwent a hysterectomy with ligation and excision of aneurysm. Histopathologic findings showed pelvic AVM and a true aneurysm of the uterine artery. Conclusion Ultrasound with color Doppler is a low-cost and readily available tool for gynecologists for the diagnosis and management of pelvic AVM.
Ultrasonography, Doppler

No abstract available.
Ultrasonography, Doppler, Color*

The smoking level and the lung ventilatory function was measured on 30 patients with COPD (19 males, 11 females, mean aged 68.3+/-11.5) and 30 non-smoking controls (17 males, 13 females) without cardio-vascular and respiratory diseases at HuÕ Central Hospital. Results: There is not any correlation between respiratory function measurements and Doppler echocardiographic measurements. The smoking level as measured by packages per year has close correlation with the decrease in respiratory function (r = -0.73, p = 0.01). The combination of many Doppler echocardiographic measurements is helpful in evaluating the pulmonary hypertension in patients with COPD.
Ultrasonography, Doppler ; diagnosis

PURPOSE: The aim of this experimental study was to evaluate whether the acoustic radiation force (ARF) is a potential source of twinkling artifacts in color Doppler images. METHODS: Color Doppler images were obtained using a clinical ultrasonic scanner (Voluson e, GE Healthcare) for a high contrast (+15 dB) circular scattering phantom at pulse repetition frequencies (PRFs) ranging from 0.1 to 13 kHz. Ultrasound transmissions resulting in ARF were measured using a hydrophone at the various PRFs considered. The influence of ARF on the appearance of twinkling colors was examined via the common parameter PRF. This methodology is based on the fact that alternating positive and negative Doppler shifts induced by the ARF are centered at a PRF twice the maximum Doppler frequency on the color scale bar, whereas the twinkling color aliasing is expected to remain similar regardless of PRF. RESULTS: Color twinkling artifacts were observed to be most conspicuous at the lowest PRF of 0.1 kHz. The extent of twinkling rapidly decreased as the PRF increased, eventually disappearing when the PRF > or =0.6 kHz. The measured ultrasound transmissions, however, were found to be insensitive to the PRF, and therefore it can be inferred that the PRF was insensitive to the ARF. CONCLUSION: Based on our experimental observations, the ARF may not be a source of color Doppler twinkling artifacts.
Acoustics* ; Artifacts* ; Doppler Effect ; Ultrasonics ; Ultrasonography ; Ultrasonography, Doppler, Color

No abstract available.
Brain Death* ; Ultrasonography, Doppler, Transcranial*

Torsion of the gallbladder is a rare and acute abdominal condition. Even with the recent advances in radiologic imaging modalities, it is difficult to make a correct preoperative diagnosis of gallbladder torsion. We recently experienced a case of gallbladder torsion at the body portion in which an accurate preoperative diagnosis could be made on the gray scale and by using color Doppler ultrasonography. We report the imaging and operative findings with particular emphasis on the ultrasonographic "whirlpool sign".
Diagnosis ; Gallbladder* ; Ultrasonography, Doppler, Color

PURPOSE: The purpose of this study was to investigate the value of UltraFast Doppler ultrasonography (US) for evaluating hepatic vessels in liver recipients. METHODS: Thirty-nine liver Doppler US sessions were conducted in 20 liver recipients. Each session consisted of UltraFast and conventional liver Doppler US in a random order. We compared the velocities and phasicities of the hepatic vessels, duration of each Doppler study, occurrence of technical failures, and differences in clinical decisions. RESULTS: The velocities and resistive index values of hepatic vessels showed a strong positive correlation between the two Doppler studies (mean R=0.806; range, 0.710 to 0.924). The phasicities of the hepatic vessels were the same in both Doppler US exams. With respect to the duration of the Doppler US exam, there was no significant difference between the UltraFast (251+/-99 seconds) and conventional (231+/-117 seconds) Doppler studies (P=0.306). In five poor breath-holders, in whom the duration of conventional Doppler US was longer, UltraFast Doppler US (272+/-157 seconds) required a shorter time than conventional Doppler US (381+/-133 seconds; P=0.005). There was no difference between the two techniques with respect to technical failures and clinical decisions. CONCLUSION: UltraFast Doppler US is clinically equivalent to conventional Doppler US with advantages for poor breath-holders during the post-liver transplantation work-up.
Liver Transplantation ; Liver* ; Ultrasonography, Doppler*

Background: Gestational trophoblastic neoplasia (GTN) presents as vascular mass of varying morphology on ultrasound and confirmed through quantitative serum β subunit human chorionic gonadotrophin (β‑hCG). In regions with limited access to β‑hCG, ultrasound plays a crucial role in the initial diagnosis for timely management. Objectives: This study aimed to investigate the associations between ultrasound vascular morphologic features, serum β‑hCG levels, and histopathology in GTN cases. Methodology: A cross‑sectional review was conducted on 113 cases with ultrasound impression of GTN over an 8‑year period. The patient data were extracted from case records, and ultrasound images were categorized based on the distinct features. Associations with β‑hCG levels and histopathology were analyzed using the Chi‑square test and Mann–Whitney U‑test. Statistical significance was set at P < 0.05. Results: A significant association was observed between ultrasound category and serum β‑hCG (P < 0.0001). The compact and diffuse types were more prevalent with β‑hCG levels between 104 to <105 mIU/mL, while the lacunar type was common among patients with ≥105 mIU/mL. However, there was no significant association between ultrasound categories and mean β‑hCG levels. Regarding histopathology, the lacunar type was more common in invasive moles, whereas the compact and diffuse types tended to be seen with choriocarcinoma, although these were not statistically significant (P = 0.182). Conclusions Morphologic types of GTN by gray scale and Doppler ultrasound vary across the different levels of serum β‑hCG and may suggest the histopathological diagnosis. This study provides valuable insights into the ultrasonographic characteristics of GTN, which can aid in its diagnosis and management.
Gestational Trophoblastic Disease ; Ultrasonography, Doppler

49 healthy people without the cardiovascular diseases and cerebral pathology with ages of 17-84, divided 3 groups participated to a study. The results have shown that the maximal and medial speed of the major cerebravascular was gradually reduced as increase of age. The highest reduction of speed found in the vascular in the medial brain, followed by anterior, posterior, basal brain and at last of spine. There is no different between vascular and ages in the speed indicators in the healthy persons.
Hemodynamic Phenomena ; Ultrasonography, Doppler, Transcranial ; Ultrasonics ; Ultrasonography

PURPOSE: The aims of this study were to evaluate whether vardenafil, a phosphodiesterase type 5 inhibitor, may be used as a substitute for intracavernosal injection when assessing erectile dysfunction using penile duplex Doppler ultrasonography. MATERIALS AND METHODS: A total of 21 patients with erectile dysfunction underwent penile duplex Doppler ultrasonography after intracavernosal injection of 0.2 ml trimix. Each patient also underwent penile duplex Doppler ultrasonography after a 10-mg oral dose of vardenafil with audio-visual sexual stimulation. There was 1 week interval between each study. In both studies, peak systolic velocity, end-diastolic velocity, and resistive index were measured. Then ultrasonographic diagnoses of erectile dysfunction were classified as arteriogenic, veno-occlusive, and mixed-type. RESULTS: Doppler ultrasonography with trimix intracavernosal injection identified 8(38.1%), 1(4.8%), 10(47.6%), and 2(9.5%) patients with arteriogenic, veno-occlusive, mixed-type, and non-vasculogenic impotence, respectively. After vardenafil oral medication, 10(47.6%), 1(4.8%), and 10(47.6%) patients demonstrated arteriogenic, veno-occlusive, and mixed-type impotence, respectively. There was a difference in diagnosis in 23.8% of cases. CONCLUSIONS: Vardenafil oral administration with audio-visual sexual stimulation showed a similar hemodynamic result compared to trimix intracavernosal injection during penile duplex Doppler ultrasonography. However, there were some differences. These results suggest that vardenafil oral medication may be used as a substitute for intracavernosal injection when assessing erectile dysfunction using penile duplex Doppler ultrasonography. However, further investigation is needed.
Administration, Oral ; Diagnosis ; Erectile Dysfunction* ; Hemodynamics ; Humans ; Male ; Ultrasonography ; Ultrasonography, Doppler ; Ultrasonography, Doppler, Duplex* ; Vardenafil Dihydrochloride