ATS 540 Series 사용 설명서 - 페이지 4

{카테고리_이름} ATS 540 Series에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. ATS 540 Series 9 페이지. Rectal scan phantom

Target Diagram

FOCAL ZONE

Description and Reason For Testing

The focal zone is the region surrounding the focal point in which the intensity and the

lateral resolution is the greatest. Clinically, structures examined within the focal zone will

provide the best diagnostic information obtainable. The focal zone can be affected by

changes in the pulsing/receiving section of the imaging system or damage to the

transducer.

Test Procedure

1. Place the phantom on a clean, flat surface with the internal scanning well positioned

for use.

2. Fill the scanning well slowly with water to avoid introducing air bubbles.

3. Insert the transducer into the scanning well.

4. Adjust the instrument settings (TGC, output, etc.) to establish baseline values for

"normal" liver scanning. If the bottom of the phantom is seen, adjust the gain settings

until the image fades and goes entirely black at the bottom of the display. Record these