Sonographically the liver is usually divided into right and left lobes . However the liver is divided into 8 functional segments with the Couinaud classification (pronounced kwee-NO). Each segment has it’s own vascular and biliary supply. The liver is divided horizontally by the portal veins and vertically by the hepatic veins. Segment I is the caudate lobe.… Read More Couinaud's Liver Segments
OB Ultrasound Second Trimester (The Basics)
The second trimester of pregnancy is from week 13 to week 28 – roughly months four, five and six.
A second trimester sonogram is usually performed between weeks 18-20.… Read More OB Ultrasound Second Trimester (The Basics)
Fatty liver is a condition consisting of the accumulation of fat (triglycerides) in the form of vesicles within the livers hepatocytes. Fatty liver is divided into two subcategories; alcoholic fatty liver disease ALFD and non-alcoholic fatty liver disease or NAFLD, though the clinical outcomes are nearly the same. The condition is also associated with other diseases… Read More Hepatic Steatosis (Fatty Liver)
References: http://emedicine.medscape.com/article/175667-overview http://emedicine.medscape.com/article/171886-overview Liddle, Rodger A., et al. “Cholecystokinin bioactivity in human plasma. Molecular forms, responses to feeding, and relationship to gallbladder contraction.” Journal of Clinical Investigation 75.4 (1985): 1144. Stampfer, Meir J., et al. “Risk of symptomatic gallstones in women with severe obesity.” The American journal of clinical nutrition 55.3 (1992): 652-658.
Transcranial Doppler is used to identify and interrogate the intracerebral arterial system. Normally the skull is impenetrable to Ultrasound waves, but using certain windows allows adequate penetration to monitor cerebrovascular hemodynamics.… Read More Transcranial Doppler
Spine ultrasound provides a high resolution imaging technique to rule out common and uncommon vertebral column pathologies like tethered cord syndrome and other spinal dysraphisms.
Subgaleal hemorrhage is a rare collection of fluid in the potential space of the galeal or epicranial aponeurosisand cranial periosteum. Birth trauma and forceps use typically cause it (90% of cases), and may also be present in patients with blood clotting disorders. This condition is similar in appearance to a cephalohematoma, though the cephalohematomas are… Read More Subgaleal Hematoma