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Biomedical subjects

T Akanuma

Publications and source records attributed to T Akanuma.

17 recordsLinked to original sources
PubMed1985

[Radiotherapy of metastatic bone tumor with a synthetic calcitonin derivative (Elcatonin) with irradiation].

Twenty cases of metastatic bone tumors were treated with Elcatonin together with irradiation, achieving pain relief in 47.3% of cases, improved bone scintigrams in 16.7% of cases and radiographic improvement of invaded bone in 7.7% of cases. It has reported that calcitonin is effective for pain relief in 50% of cases but for the radiographic improvement of bone lesions in only 0-10%. The life quality of patients with bone metastases is controversial since treatment techniques for advanced oncological patients has progressed remarkably. The pain relief obtained with calcitonin contributes significantly to improving the quality of life for such patients when administered in combination with conventional treatment modes.

Adult↗
PubMed1981

Easy method for measurement of opening angle of Björk-Shiley valve with two computers. Proof of floating phenomenon of Björk-Shiley valve.

A new method for measuring the opening angle of Björk-Shiley valve (B-S valve) was reported in 1977. However, this method is complicated enough to permit quick calculation of the opening angle in multiple frames of one cinefilm. We devised a new method with using two computers (NAC Cardias GP 2000, TEXAS TI-59) for calculating the opening angle of the B-S valve. We measured the opening angle of 7 cases (they were all implanted B-S valves, 5 were mitral and 2 were aortic). Results are the following: (1) The maximum opening angle ranged from 54 degrees to 65 degrees and the mean value was 58.1 degrees. (2) We showed the floating phenomenon of B-S valve with our method. (3) We showed the accuracy of our method by measuring 10 times the same photograph of B-S valve. (4) We showed that our method is very accurate by comparing the values calculated by our method with those calculated directly from the valve which was removed from a patient. (5) It takes less than 30 minutes to calculate the opening angle of 60 frames (we took 60 frames of cine-film per minutes.

Aortic Valve↗
PubMedDate not supplied

A new surgical technique for treatment of annuloaortic ectasia.

Five patients with far advanced cystic medial necrosis of the ascending aorta associated with aortic regurgitation were operated upon using a method not previously described. This new method consists of a special wrapping procedure which acts like a tubular prosthesis replacement and a new technique of fixation of aortic valve prosthesis in order to prevent periprosthetic leakage. The advantages of this new alternative method comparing to the procedure of Bentall and DeBono are discussed.

Adolescent↗