Lege Artis Medicinae

[A new ultrasound method for the examination of the circulation: color velocity imaging (CVI)]

HARKÁNYI Zoltán1, DANIEL Morton2, JI-BIN Liu2, BARRY B. Goldberg2

OCTOBER 28, 1992

Lege Artis Medicinae - 1992;2(10)

[The newest ultrasound method for the exa mination of the peripheral and abdominal vessels is Color Velocity Imaging (CVI) or time domain correlation method. In contrast to the widely accepted color Doppler imaging technique CVI is based on a different principle. Blood flow velocity is displayed using time-shift measurement ins tead of frequency-shift. This paper is brief summary of the principle of CVI method with a special emphasis on the new features. Improved special color resolution, direct velocity measurement from the color images and blood flow volume calculations are the most important new features. Authors preliminary clinical experience with this new ultrasound method is positive. A few illustrative cases demonstrate CVI and CVI-flowmetry in clinical practice. CVI is a promising new ultrasound method for imaging and quantification of human blood flow. ]


  1. Semmelweis Orvostudományi Egyetem, Központi Radiológiai Diagnosztika, Budapest
  2. Department of Radiology, Thomas Jefferson University Hospital, Philadelphia



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Lege Artis Medicinae

[Diagnosis and treatment of acute obstetrical DIC]


[Modern management of acut obstetrical diffuse intravascular coagulation (DIC) was evaluated. A large variety of obstetrical conditions are associated with acute DIC such as amniotic fluid embolism, abruptio placentae, intrauterine infection (septic abortion), dead fetus syndrome and prolonged shock of any aetiology. Typically, acute obstetrical DIC is associated with haemorrhage (mainly vaginal bleeding) and shock. The whole blood coagulation time, platelet count and fibrinogen level are the most clinically useful indicators in evaluating the patient with acute DIC. Management of acute DIC includes prompt treatment of precipitating factors (delivery of fetus in placental abruption, evacuation of the uterus in septic abort union plus administration of antibiotics, delivery of a dead fetus by induction of labor). Careful attention to fluid and blood cell replacement is needed to prevent and treat hemorrhagic shock. The coagulation failure is treated with fresh-frozen plazma or cryoprecipitate and platelets. In acute obstetrical DIC complicated by hemorrhage heparin has no use and will only cause the bleeding to worsen. Recently several clinical studies indicate that antithrombin III concentrates are efficacious in DIC.]

Lege Artis Medicinae

[Disseminated intravascular coagulation in the newborn]


[A review is given on disseminated intravascular coagulation in the newborn period. DIC is not a single disease entity, but a complication of several underlying diseases. The author summarizes the physiologic and pathophysiologic conditions which promote the development of this blood coagulation disorder in this age. Further on the clinical symptoms, the difficulties of laboratory analysis as well as of differential diagnosis are discussed. Finally a detailed description of the treatment of the neonatal DIC syndrome is given. ]

Lege Artis Medicinae

[The risk of ischemic heart disease in patients with ischemic cerebrovascular disease]


[A strong association is supported between ichemic cerebrovascular and heart diseases by several studies. Death is more commonly caused by myocardial infarction than by stroke itself in patients with asymptomatic carotid stenosis, amaurosis fugax, transient ischemic attack or ischemic stroke. Signs and symptoms of ischemic cerebrovascular diseases or asymptomatic atherosclerosis of the arteries of the neck are harbinger for both myocardial and cerebrovascular infarction. Patients suffering from ischemic cerebrovascular diseases should be routinely investigated, treated and cared for coronary artery disease in order to prolong survival. ]

Lege Artis Medicinae

[Results and perspective of gene therapy in the treatment of primary immunodeficiency]

SÓFI Gyula, MARÓDI László

[During the last decade research has been directed toward gene-replacement therapy of genetic disorders, including primary immunodeficiencies. Efficient methods for gene transfer were developed to correct the gene defect in adenosine desaminase deficiency, leukocyte adhesion deficiency and chronic granulomatous disease. Somatic gene therapy in a patient with ADA deficiency was performed two years ago. This paper summaries inicial clinical applications of gene transfer and gene therapy in primary immunodeficiency and the future prospects of gene therapy in cohort of patients. ]

Lege Artis Medicinae

[Third International Study of Infarct Survival]


[There was no significant difference in 35-day mortality between the aspirin + heparin and aspirin-only groups. The incidence of re-infarction was slightly lower with aspirin plus heparin (2p <0.09). When patients also received heparin in addition to aspirin, transfusion was needed more often and non-cerebral haemorrhage was more frequent (2p < 0.01) Combining the results of ISIS-3 and GISSI-2, mortality was significantly reduced during the treatment period (p < 0.01). There was no appreciable difference in mortality or re-infarct incidence between the use of streptokinase or APSAC, but there were more allergic events in the APSAC group. There was no difference in 6-month survival between the two groups. There was no difference in the efficacy of streptokinase and tPA treatment at either 0-35 days or 6 months survival. Allergies were less frequent with tPA, but non-cerebral haemorrhage was more frequent. Treatment with tPA led to stroke significantly more often than streptokinase (2p < 0.01). Combining the data from the similar GISSI-2 trial and ISIS-3, no difference was observed between streptokinase and tPA in either mortality between 0-35 days or survival at 6 months. ]

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Clinical Neuroscience

Chronic cerebrospinal venous insufficiency - disease or misdiagnosis?

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[Ultrasound of the acute pediatric scrotum]

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[Proper evaluation of the acute scrotum, like any condition, starts with a history and physical examination by an experienced clinician. Often this is all that is needed to arrive at an accurate diagnosis, which then allows prompt and appropriate treatment. However, the true nature of the underlying disease producing scrotal pain is not always clear, and the consequences of error (testicular loss) are undesirable. Ultrasound is the single most useful imaging tool for imaging the scrotum. While nuclear medicine studies can help assess blood flow, the combination of anatomic detail provided by modern ultrasound equipment and the ability to assess blood flow and perfusion with color Doppler makes ultrasound invaluable. Properly performed and interpreted, ultrasound provides very high sensitivity and specificity for acute scrotal conditions. Understanding of the conditions that produce acute scrotal pain in children will improve one’s diagnostic abilities. The most important diagnosis to consider is testicular torsion, since untreated this will result in testicular death. While testicular torsion can occur at any age, it is most common in the perinatal and peripubertal age groups. Torsion of a testicular appendage is a frequent cause of scrotal pain in prepubertal males. The sonographic findings can mimic epididymitis, but diligent and focused sonographic examination can make the diagnosis. Epididymitis typically affects postpubertal males, but can be seen in younger patients with functional or anatomic urinary tract anomalies. Sonographic evaluation of the post-traumatic painful scrotum can help to differentiate injuries that can be managed conservatively and those that require surgery. Less common causes of scrotal pain include hernias and hydroceles, vasculitis, and idiopathic edema. Understanding the characteristic sonographic features of these conditions allows the examining physician to make more accurate and confident diagnoses. It is hoped that this review article will help to promote this understanding.]

Lege Artis Medicinae

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Hungarian Radiology

[Ethiopathogenesis of polycystic ovarian syndrome and imaging diagnostics of polycystic ovary]

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