The author has attempted a two dimentional scanning by using ordinary Magnascanner 500, Picker. There was noany additional instrumentation of procedure for this examination. The images obtained by this method appeared moreclear in configuration and more sharp in margin. The smaller and more obscured abnormality could be detected bythis method compared with the ordinary one-way scanning. In case of phantoms, thyroid phantom 3602, Picker, andliver phantom 615171, Picker, were used for the experment. the method of scanning was as follows. a) A randompoint 0 was marked on the back-side of the phantom and X and Y lines were drawn perpendicularly to each otherpassing through the point 0. This was repeated on a scanning pater. b) The phantom was placed over the scanningpaper to overlap X and Y lines exactly. c) The X and Y lines were reproduced on a white paper fixed on the colorprinter table by using collimeter light. d) The first direction scanning was done on the scanning paper which wasplaced over the white paper to overlap X and Y lines exactly. e) After the first direction scanning the phantomand scanning paper was rotated 90 degree toward the same direction and then the second direction scanning wasmade. With the patients; a) After the first direction scanning. A, B and C random points were marked instraight-line on the scanning paper and the scanning region of the patient by using collimeter light and remotecontrol switch in the detector. b) After 90 degree rotation of the patient, the A, B and C points on the scanningregion was reproduced on a white paper fixed on the color printer table by using collimter light. c) The scanningpaper was placed over the white papter to overlap A,B and C points exactly and then the second direction scanningwas made. The maximum counting rate, scan speed, spacing, backgroud cut-off, collimeter and otherelectromechanical conditions were constant between one direction scanning and two dimentional scanning, except thedot factor, The dot factor in two dimentional scanning was reduced to 1/2 of the current scanning so to make thetotal dot factor after completing the two dimentional scanning become same to the current scanning.