Clinical Value of Thallium-201 Reinjection for the Identification of Myocardial Viability in Patients with Coronary Artery Disease and Left Ventricular Dysfunction

BACKGROUND: The reinjection of a small dose of thallium-201 after stress and delayed imaging often shows new redistribution in the region with persistent defect. The purpose of this study was to determine the incidence of incomplete redistribution on conventional delayed image and to compare the left venticular wall motion abnormality with myocardial viability in patients with coronary artery disease. METHODS: We studied 12 patients with chronic coronary artery disease, using exercise thallium-201 Single Photon Emission Tomopraphy(TI-201 SPECT) and coronary angiopraphy with contrast ventriculography. Patients received 2mCi of thallium intravenously during exercise, redistribution images were performd 4 hour late and a second dose of 1mCi of thallium was injected at rest immediately there after. The three sets of image(stress, redistribution and reinjection) were analyzed. The left ventricular myocardium was divided into 7 segments and regional wall motion was scored on scale from 2(normal) to -1(dyskinesis). RESULTS: 1) The redistribution was obtained in 42.9% of the segments with persistent TI-202 defect on 4 hour delayed image. 2) Myocardial viability was observed in 38.9% of regions with all motion abnormality on contrast ventriculography. 3) The wall motion score was lower in the segments with persistent TI-201 defect on reinjection image than those with transient defect(p<0.05). 4) In 42.9% of the regions with wall motion abnormality on contrast ventrculography before coronary artery bypass graft, normal TI-201 image was observed after coronary artery bypass graft. CONCLUSION: Thallium-201 reinjection image can be used to identify viable myocardium in segments that demonstrate a persistent thallium defect on conventional delayed images patients with chronic coronary artery disease and left venticular dysfuction.

Etoposide, adriamycin and cisplatin(EAP) chemotherapy in advanced gastric cancer / 대한암학회지

No abstract available.

Clinical Study in Patients were Performed Pericardiocentesis and Percutaneous Pericardial Biopsy

We reviewed 49 cases of moderate or severe pericardial effusion on which we performed pericardiocentesis and percutaneous pericardial biopsy from Jan. 1987 to Sep. 1989. Of these, 11 cases were performed percutaneous pericardial biopsy in order to diagnose confirmative. We studied clinical manifestation including physical examination, ECG, and radiology, etiology and complication of pericardiocentesis and percutaneous pericardial biopsy. The results are as belows : 1) The physical examination of pericardial effusion were neck vein engorgement(73.5%), priction rub(25.5%), and pulsus paradoxus(4%). The ECG findings were low voltage(77.6%) and electrical alternans(16.5%), and most common x-ray finding was cardiomegaly (81.6%). 2) Underlying diseases were as follows : neoplastic disease(40.8%), tuberculosis(18.4%) systemic lupus erythematosus(10.2%), hemopericardium(8.2%), chronic renal failure(6.1%), congestive heart failure(4.1%), idiopathic pericarditis(4.1%), GVHD(2.0%), pyopericardium(2.0%), rheumatic carditis(2.0%), and postpericardiotomy syndrome(2.0%), in order. 3) Special etiologic diagnosis of neoplasm were lung cancer(50%), adenocarcinoma of unknown origin(20%), Malignant lymphoma(15%), stomach cancer(5%), hepatoma(5%), and malignant thymoma(5%), in order. From the percutaneous pericardial biopsy, the authors confirmed 36% by finding two cases of malignancy and two cases of tuberculosis. On the other hand, only one case was confirmed in cytology. These result in a rather low rate of diagnostic confirm. There were 8 cases of complication : hypotension(8.2%), premature ventricular contraction(6.1%) and ventricular tachycardia (2.0%) without death cases. In percutaneous pericardial biopsy, only two cases of hypotension were found with no death case. The result obtained from the above 11 cases of percutanous pericardial biopsy is not enough to make conclusive statement concerning rate of diagnostic confirmation and complication. We expect better results by examining more cases in the future.