Low-cost digital subtraction angiography.
نویسندگان
چکیده
Intravenous angiography was an important diagnostic tool earlier in th is century [1] , however, the technique had many drawbacks . Film timing was critical, the volume of contrast material was high , and the contrast resolution was often poor. When safer techniques for direct arteriography were developed, intravenous angiography was abandoned . Computed digital image processing has brought a resurgence of interest in intravenous angiography [2-1 3]. The enhanced contrast resolution of th is technique approaches the contrast resolution of direct arteriography and requires smaller volumes of contrast material than the older techniques of intravenous angiography. In addition, it can be performed on an outpatient basis. Several systems capable of performing digital intravenous angiography are commercially available, with prices of $150,000-$500,000. We are investigating the clinical application of a digital intravenous angiography system with capital equipment costs of about $50,000 . The system is designed around a Quantex OS-20 (Quantex Corp ., Sunnyvale, Cal.) digital image processor. The basic components of our system and the results of some preliminary investigations are presented .
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ورودعنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 3 4 شماره
صفحات -
تاریخ انتشار 1982