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Biomedical subjects

L Csernay

Publications and source records attributed to L Csernay.

At least 73 records · Page 4Linked to original sources
PubMed1989

[SPECT--single photon emission computer tomography. A new imaging method in isotope diagnosis].

The paper gives an introduction to the basis and quality control of a relatively new imaging method. First the different kinds of SPECT instruments, and then the aspects of diagnostic application are described. Details are given on examinations of the central nervous system, the abdomen, the hearth and the skeletal system, on the possibilities of immunoscintigraphy, and also on the indications of SPECT studies and the clinical performance. Finally, the state and future of this technique in Hungary are considered.

Forecasting↗
PubMed1989

[Accurate detection of hemangioma of the liver by SPECT].

The hemangioma cavernosum is a frequent, benign tumor of the liver. Generally the hemangioma becomes suspected during the US examination as a secondary result. From the point of view of the differential diagnostics the three-phase blood-pool scintigraphy, a new very sensitive isotope diagnostic method, has a great importance in these cases. The images taken at the beginning, the early and the late-phase show the kind of alteration unambiguously. Since the conventional planar scintigraphy is not always able to detect the small (1-2 cm in diameter) lesions and the lesions surrounded by intact parenchyma, the SPECT has big advantage increasing the resolution of images and introducing the three-dimensional imaging. The authors illustrate the possibility of specific detection of liver hemangioma in a case by SPECT.

Adult↗
PubMed1989

[The role of bone scintigraphy and its value in the staging and follow up of prostatic carcinoma].

The role and value of bone scintigraphy in the staging and follow-up of prostatic cancer. Bone scintigraphy was performed in 100 patients with prostatic cancer at the time of histological diagnosis, and during 6 years follow-up in predefinied manner. The sensitivity of the method was enhanced by the results in the case of early M0-1 staging (the rate of the skeletal metastasis was 41% at the first seen). During the follow-up only 8 further cases of skeletal metastasis was observed. In most of the cases the skeletal metastasis was already disseminated at the first seen, the hot spots were located mainly at the pelvis and spine. In six cases "super bone scan" was observed. The conventional hormone therapy resulted in regression in 7 of the patients with skeletal metastasis. According to the authors' experiences the bone scintigraphy is indispensable at the diagnosis in the correct staging, and useful in the patient's follow-up.

Bone and Bones↗
PubMed1987

Comparison of some haemodynamic parameters determined by invasive methods as well as by the noninvasive radionuclide estimation of the left ventricular ejection fraction in conscious and anaesthetized dogs.

An attempt was made to elaborate an optimal method for noninvasive radionuclide determination of left ventricular ejection fraction in conscious and lightly anaesthetized dogs, as well as to assess the value of this procedure in estimating cardiac functional state. Repeated determinations in the same animals have shown that the 45 degree left anterior oblique position (LAO-45) for imaging is optimal, giving the most uniform values of the calculated left ventricular ejection fraction. Neither the latter, nor the haemodynamic parameters (LVSP, LVEDP and dP/dt) determined by invasive methods were changed by light pentobarbital anaesthesia (20 mg/kg i. v.). Results confirm the validity of noninvasive radionuclide determination of left ventricular ejection fraction for estimation of the functional state and of the pharmacological actions on the latter in both conscious and anaesthetized animals.

Angiocardiography↗
PubMed1986

Detection and localization of ventricular preexcitation in Wolff-Parkinson-White syndrome (comparative study with body surface mapping).

21 patients with Wolff-Parkinson-White (WPW) syndrome were investigated through radionuclide imaging and body surface mapping. Ventricular preexcitation was localized by display of identical phase ventricular regions (phase display). In 79% of the cases radioisotope and body surface mapping methods have identical results for the site of preexcitation. In two patients of the control group (10 patients with Lown-Ganong-Levine (LGL) syndrome), false positive outside-of septum ventricular preexcitation was detected, i.e. an 80% specificity. It is concluded that phase display might be a suitable method in the diagnosis of WPW syndrome. The sensitivity of this method can be improved using several views.

Adult↗
PubMed1985

Kidney scintigraphy in the diagnostics of urological renal diseases.

The authors report on their experiences in the diagnostics of urological renal diseases gained by 256 kidney scintigraphies of a total of 227 patients. The more important trends of progress made in the recent years in nuclear medicine are outlined. The sensitivity (93%) and specificity (86%) of the examination based on the surgical and histological findings are determined. The technical importance of the study made from several directions using up-to-date radiopharmaca is emphasized in obtaining the results being favourable even in international comparison. The importance of the coordination between the urologists and experts well-versed in nuclear medicine is pointed out in selecting the examination best suited for the purpose (dynamic, static examination). Based on the literature and on their own experiences, the diagnostic results of the examination in detecting and controlling renal diseases are summarized.

Adolescent↗
PubMed1983

The diagnosis of hypertonic Oddi's sphincter dyskinesia.

The diagnostic possibility of hypertonic Oddi's sphincter dysfunction was evaluated in 100 cholecystectomized and 28 noncholecystectomized patients. An organic lesion interfering with free bile flow was ruled out in every case. The existence of the syndrome, i.e., the dysfunction of the Oddi's musculature, was verified using the morphine-choleretic test combined with either dynamic hepatobiliary scintigraphy or (in selected cases) percutaneous transhepatic cholangiography. Hypertonic Oddi's sphincter dyskinesia can be regarded as an independent clinical syndrome.

Ampulla of Vater↗