Conventional methods used for measuring regional renal blood flow, such as laser-Doppler flowmetry, are highly invasive, and each measurement is restricted to a discrete location. The aim of this study was to determine whether ultrasound imaging in conjunction with enhanced contrast agent (microbubbles; Vevo MicroMarker, VisualSonics) could provide a viable noninvasive alternative. This was ach...

References 1. Curry GR, White DN: Color coded ultrasonic differential velocity arterial scanner (Echoflow). Ultrasound Med Biol 4: 27-35, 1978 2. Barnes RW, Russell HE, Bone GE, Slaymaker EE: Doppler cere­ brovascular examination: Improved results with refinements in tech­ nique. Stroke 8: 468-71, 1977 3. Gee W, Mehigan JT, Wylie EJ: Measurement of collateral cerebral hemispheric blood pressure...

Introduction: Two percent of all 1st trimester pregnancies in the United States are ectopic. Transvaginal ultrasound is considered the mainstay in diagnosis. Color Doppler ultrasound can prove to be an added helpful modality in identifying ectopic pregnancies. Case report: An 18-year-old nulliparous female presented with vaginal bleeding and lower abdominal pain. Pelvic exam revealed tenderness...

Urinary tract infections are common in children. The available gold standard method for diagnosis, Tc-99m dimercaptosuccinic acid scan is expensive and exposes patients to considerable amount of radiation. This study was performed to compare and assess the efficacy of Power Doppler Ultrasound versus Tc-99m DMSA scan for diagnosis of acute pyelonephritis. A quasi experimental study was conducted...

References 1. Curry GR, White DN: Color coded ultrasonic differential velocity arterial scanner (Echoflow). Ultrasound Med Biol 4: 27-35, 1978 2. Barnes RW, Russell HE, Bone GE, Slaymaker EE: Doppler cere­ brovascular examination: Improved results with refinements in tech­ nique. Stroke 8: 468-71, 1977 3. Gee W, Mehigan JT, Wylie EJ: Measurement of collateral cerebral hemispheric blood pressure...

OBJECTIVE To determine the association of popliteal artery injury with simple knee dislocations or knee fracture dislocations, and to evaluate the role of clinical assessment and colour Doppler ultrasound examination in diagnosing these injuries. METHODS The prospective case series study was done at the Liaquat National Hospital, Karachi, and comprised patients with simple knee dislocations o...

Background: Doppler ultrasound is a noninvasive method to investigate the nature of blood flow in an unborn baby (fetus) to check the health of the fetus. In pregnant women with insulin-dependent diabetes blood flow varies in the embryonic and fetal placental arteries due to pathological changes caused by the disease. Methods and material: Doppler ultrasound indices includes: resistive Index, p...

This paper compares the effectiveness of the dTnorm and t90_10 parametrizations in dynamic thermography for imaging location of perforators in TRAM flaps in the intraoperative period. The results were compared with the location detected in a Doppler ultrasound examination. Cold and heat stimulation was used in dynamic thermography. Additionally, these results were compared with static thermogra...

Three non-invasive methods for the detection of a varicocele were evaluated in 63 men presenting with infertility. Physical examination, varicoscreen contact thermography and colour Doppler ultrasound were compared with spermatic venography as reference strategy. Physical examination had a sensitivity of 71%. Whether the non-palpable varicoceles are all subclinical is questionable since the spe...

Renal arteriovenous fistula (AVF) is an uncommon clinical entity, which can be congenital, acquired, or idiopathic. Diagnosis is aided by radiological studies, with digital subtraction angiography as a gold standard. However, Doppler ultrasound with color Doppler interrogation and computed tomography (CT) angiography are alternative imaging techniques that are noninvasive and can be used for pa...