Masaomi Takizawa

Imaging of the Bronchial Blood Flow Using RI-Angiography

99mTCO4-の静注によるRI-アンジオグラフィを実施し, 気管支動脈血流成分の描出の可能性につき検討した。肺がん, 肺化膿症, 慢性気管支炎でそのイメージが認められ, さらに本法に腫瘍シンチ, 肺血流シンチを同時に併用し, 後二者の線図形化した画像をRI-アンジオグラムの画像に重ね合わせる方法などを検討した結果, 肺疾患の病態を知るうえで有用な検査法であることが認められた。あわせて本法の問題点についても検討した。

Studies on computer analysis of multi-frame renal images

A method of making the multiple regional renograms and simple functional images are described. Thirty-six EDTA (or DTPA) images has been transferred from a gamma camera to a small computer with the magnetic tape. Thirteen regional renograms from a kidney have been made by using the single pixel ROIs from these images, a continuous 13 pixels horizontal and/or vertical of the matrix are selected, in distinction from right and left kidney. Two functional images have been made by the multi-frame images as a peak arrival time and its peak counts. Small change of the radioisotopic transportation in the kidney could be observed by the method, and change of the urodynamics could be extracted by two functional images. It will be actualize quantitative diagnosis to the renal function disorders.

Computer processing of radioisotope images. Hybrid processing system

A hydrid type image file and processing system are devised by the author to file and the radioisotope image processing with analog display. This system has some functions as follows: 1) Ten thousand images can be stored in 60 feets length video-tape-recorder (VTR) tape. 2) Maximum of an image on the VTR tape is within 15 sec. 3) An image display enabled by the analog memory, which has brightness more than 15 gray levels. 4) By using the analog memories, effective image processing can be done by the small computer. 5) Many signal sources can be inputted into the hybrid system. This system can be applied many fields to both routine works and multi-purpose radioisotope image processing.