OBJECTIVES The purpose of this study was to compare thallium reinjection with standard stress/delay redistribution for the prediction of cardiac events. BACKGROUND Although thallium reinjection enhances the detection of viable myocardium, its contribution to prognosis over stress/delay redistribution in a general referral population has not been clearly evaluated. METHODS This retrospective...

CONTEXT Research examining hormonal injectable contraceptive continuation has focused on clients' intentional discontinuation. Little attention, however, has been paid to unintentional discontinuation due to providers' management of clients who would like to continue use but arrive late for their scheduled reinjections. METHODS A cross-sectional survey of 1,042 continuing injectable clients a...

incorrectly interpreted to be irreversible if only stress-reinjection images were acquired. Dr. Freedman's finding of low differential uptake in 11% of their patients after reinjection appears to confirm our results. We agree with Dr. Freedman that similar information might be obtained if an analysis of thallium activity after a resting injection of 20`T1 were used. Preliminary data in our labo...

Reinjection of antigen into immunized rabbits usually results in an immediate increase of circulating antibody-antigen complex. This immediate formation of complex seems to depend upon the presence of non-precipitating antibody before reinjection. The complex disappears by the 2nd day after reinjection and reappears between the 4th to 7th day. This is earlier than its first appearance after a p...

OBJECTIVE To compare single-photon-emission computed tomography (SPECT) imaging scans using 201Tl and 99mTc-MIBI in detection of viable myocardium, in regions compromised by infarction. METHODS Thirty-two (59.3 +/- 9.8 years old and 87% male) myocardial infarction patients were studied. All had Q waves on the ECG and left ventricle ejection fraction of < 50%. They underwent coronary and left ...

Reinjection has posed a major problem in the operation of the Hellisheidi Power Plant, SWIceland. The formation temperature at the originally planned reinjection zone proved to be very hot (>300°C) when injection wells were drilled there. In order to be able to use that zone for production a new reinjection zone was planned. The new zone has been promising despite problems in operating the new ...

TO THE EDITOR: In an effort to maximize the utility of the thallium scan, the subject of the reinjection of thallium has become an issue of recent concern (1). The rationale of the reinjection procedure is the observation that a stress/reinjection comparison does a better job of identifying viable myocardium than a stress/redistribution scan. Some authors propose performing stress/redistributio...

PURPOSE To evaluate the effect of intravitreal triamcinolone acetonide (IVT) reinjection on clinical and optical coherence tomographic features in refractory diabetic macular edema. METHODS In a prospective interventional case series, all IVT treated patients enrolled in a previous clinical trial were recalled to have a new ophthalmologic examination and optical coherence tomography (OCT) per...

This paper explores the effect of the noise in the reinjection probability densities (RPD) for type-II and type-III intermittencies by using the temporal series of iterative maps. The RPD are calculated by means of a new method proposed in Refs. [1] and [2] and the results are compared with both, numerical simulations and analytical calculations. In addition, we provide an explanation for the g...