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Biomedical subjects

I Lifshitz

Publications and source records attributed to I Lifshitz.

6 recordsLinked to original sources
PubMed1998

[Leiomyosarcoma of the stomach].

Gastric leiomyosarcoma (GLMS) is a malignant, smooth muscle neoplasm accounting for not more than 0.45%-3.5% of primary gastric malignancies and 17%-20% of all smooth muscle tumors of the stomach. A well-characterized variant has been variously referred to as leiomyoblastoma and epithelioid leiomyosarcoma. Because of the rarity of GLMS, few authors have tried to correlate clinical presentation, pathological findings, and treatment. There is no uniform therapeutic approach for leiomyosarcoma of the stomach and reported survival rates vary widely. We present a 56-year-old man whom we treated for this condition.

Humans↗
PubMed1995

[Treatment of well-differentiated thyroid cancer].

Well-differentiated thyroid cancer is the most common malignancy of the thyroid gland, yet its optimal management remains controversial. 269 patients with such lesions were operated on, with or without supplementary treatment. It was concluded that young patients with stage I disease can be safely treated by subtotal thyroidectomy. Total thyroidectomy combined with radioactive ablation is indicated in patients with more advanced systemic disease.

Combined Modality Therapy↗
PubMed1992

Reconstruction of the acoustical impedance profile of a multilayer medium.

The recovery of the acoustical reflectivity function and impedance profile of a layered medium from bandlimited and noisy pulse-echo ultrasonic data is considered. The effects of the transducer and the noise are reduced using Wiener filtering. With further signal processing and a priori knowledge of the attenuation and the velocity profiles, the compensated coefficients of the reflectivity function and the impedance profile are recovered. The reconstruction techniques are presented analytically, and are also evaluated in an experimental setup composed of a conventional pulse echo system, a data acquisition and a data processing system. Under experimental conditions, the RMS errors in the estimation of the compensated acoustical discrete impedance profile were within 3% of the calculated values.

Algorithms↗