Use of High-Definition Films and Immersion Technic in Early Diagnosis of Metabolic and Systemic Disorders
FOR many years there has been periodic interest in radiology of the soft tissues to further the understanding of their pathology and of dermatologic disorders.1–5 There is general agreement that exposure to low kilovoltage and high milliampere-seconds is necessary to accentuate the contrast of skin and underlying soft-tissue components. Water and other immersion mediums have been utilized to enhance this contrast.6, 7 Injection of contrast mediums and gases into the subcutaneous layers has also been utilized to demonstrate injury and pathologic lesions in these tissues.8
In the past the immersion technic has been applied to evaluate bone atrophy and to obtain greater detail of small vessels and organs injected with contrast medium. Recently a report7 discussed immersion of the forearm in water or alcohol for roentgenographic evaluation of skin thickness in control subjects and in acromegalics. During the last year, the author has applied an immersion technic in the examination of more than 100 patients. The purpose of this paper is to state briefly some preliminary observations of application of this technic to various pathologic disorders of the hand.
For the immersion technic, a pliable plastic cassette is placed beneath a thin plastic basin, and the patient’s hand or foot is placed flush with the bottom of the basin. Just enough water is added to immerse the hand or foot. Exposure to roentgen rays from 30 to 34 kv. for 1.5 to 3 seconds at 100 ma. was used in all cases reported in this study. Focal. . .