The author has attempted a two dimentional scanning by using ordinary Magnascanner 500, Picker. There was no any additional instrumentation or procedure for this examination. The images obtained by this method appeared more clear in configuration and more sharp in margin. The smaller and more obscured abnormality could be detected by this method compared with the ordinary one-way scanning. In case of phantoms, thyroid phantom 3602, Picker, and liver phantom 615171, Picker, were used for the experment. The method of scanning was as follows. a) A random point 0 was marked on the back-side of the phantom and X and Y lines were drawn perpendicularly to each other passing through the point 0. This was repeated on a scanning paper. b) The phantom was placed over the scanning paper to overlap X and Y lines exactly. c) The X and Y lines were reproduced on a white paper fixed on the color printer table by using collimeter light. d) The first direction scanning was done on the scanning aper which was placed over the white paper to overlap X and Y lines exactly. e) After the first direction scanning, the phantom and scanning paper was rotated 90 degree toward the same direction and then the second direction scanning was made. With the patients; a) After the first direction scanning, A, B and C random points were marked in straight-line on the scanning paper and the scanning region of the patient by using collimeter light and remote control switch in the detector. b) After 90 degree rotation of the patient, the A, B and C points on the scanning region was reproduced on a white paper fixed on the color printer table by using collimeter light. c) The scanning paper was placed over the white paper to overlap A, B and C points exactly and then the second direction scanning was made. The maximum counting rate, scan speed, spacing, background cut-off, collimeter and other electromechanical conditions were constant between one direction scanning and two dimentional scanning except the dot factor. The dot factor in two dimentional scanning was reduced to 1/2 of the current scanning so to make the total dot factor after completing the two dimentional scanning become same to the current scanning.