[Differential diagnosis of liver disease by means of sonography: correlation with scintigraphy and angiography (author's transl)]. / Sonographische Differentialdiagnose pathologischer Leberprozesse: Korrelation mit Szintigraphie und Angiographie.

The value of sonography of the liver is assessed and compared with angiography and scintigraphy on the basis of case material from 102 patients, representing localized and diffuse liver processes. The diagnostic accuracy depends on the characteristic acoustic impedance differences in the examined tissue. Diffuse liver disease and processes without clearly defined acoustic borderlines may cause diagnostic difficulties and differentiation can only be attempted by additional clinical information. Defined tumours represent the main field of application. The combined use of ultrasound, scintigraphy and angiography permits a correct diagnosis to be made in nearly 90% of cases. Differential diagnosis between cystic and solid processes is possible only by ultrasound.

[Differential diagnosis of space-occupying lesions of kidneys (comparison between IVP, angiography and ultra-sound) (author's transl)]. / Zur Differentialdiagnose renaler Raumforderungen (Vergleichende Untersuchungen Zum Informationsumfang von Ausscheidungsurographie, Angiographie und Ultraschall)

On 77 IVP's it can be shown that correct assessment of the identity of space-occupying lesions of the kidneys is difficult (correct diagnosis in 39% of cystic and 10% of solid conditions). Improvement can be expected from early tomography of IVP's by improved pictures of the parenchyma, mainly with ultra-sound which separates cystic from solid conditions. Correlation of these techniques appears sufficient for cystic processes. Angiography is indicated for solid tumors and doubtful ultra-sound findings.

[The basis of tumor verification using thermography]. / Untersuchungen über die Grundlagen des Tumornachweises mittels Thermographie.

The gradient between interior body temperature and external temperature was gradually measured in young pigs, since their skin resembles the properties of human skin. The interior temperature appeared to extend to 2.5 cm under the surface of skin. Then it drops, at first slowly and from 1 cm under the surface rapidly. Tumors or inflammations can only warm the skin directly when their site is 1 cm or less under the skin. Tumors which lie deeper may warm the skin via reflex zones. Warming by heat conduction is prevented by convection. Heating plates inserted 1.8 cm and 2 cm under the skin surface and heated 5 degrees beyond surrounding temperature do not warm the skin surface. This can be demonstrated by thermography. The importance of these results for thermographic tumor diagnosis is discussed.