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The work of the author started with observations on the hearts of children who suffered from thyroid disease, and extended over a period of about ten years. He studied intensively 142 children and made exact measurements with the orthodiagraphic methods.
The book contains a wealth of interesting data and also original conclusions based on the facts obtained through the measurement of orthodiagraphic plates. It is divided into two parts and three chapters. The first part deals with orthodiagraphic measurements of the absolute size of the heart in different groups of children divided as to height, weight and width of the lung fields. The absolute measurements proved to be unsatisfactory and unreliable and needed all kinds of corrections. Therefore, the author worked out his method of measurements, which is the main purpose of his book. This method is based on relative measurements determining the size of the heart in relation to
GRUNDLAGEN DER ORTHODIAGRAPHISCHEN HERZGRÖSSEN- UND THORAXBREITENBEURTEILUNG IM KINDESALTER.. Am J Dis Child. 1931;42(4_PART_I):960. doi:10.1001/archpedi.1931.01940160228020