Carbon Graphite Grid
Because the foil has excellent straight-line stability and can be controlled with high precision, it suppresses the occurrence of moiré patterns caused by unevenness.
■ Features
- The carbon graphite grid is a product developed using JPI’s proprietary manufacturing process. Through precision machining that applies techniques from the semiconductor industry’s cutting processes, it reduces the moiré pattern caused by foil unevenness.
- It is ideal for mammography and angiography, which require high-resolution images. We can manufacture high-density grids with up to 135 lines per centimeter, making them suitable for angiography and tomosynthesis systems that demand strict precision.
Furthermore, the use of high-density grids with 100 or more lines per centimeter eliminates the need for a shaking mechanism, thereby reducing noise issues in mammography systems caused by shaking systems. - With a high degree of flexibility in foil thickness and grid line angles, and the ability to accommodate a wide range of specifications—including ultra-small sizes and cross-grid patterns—it is well-suited for prototyping in research and development applications.
■ Carbon Graphite Grid Specifications
| Size | Line/cm | Ratio (:1) | Focal Distance | Cover Material |
|---|---|---|---|---|
| Up to 30×30 cm |
135 L/cm 126 L/cm 105 L/cm 92 L/cm 85 L/cm 80 L/cm 44 L/cm 41 L/cm 36 L/cm |
15:1 14:1 12:1 10:1 8:1 6:1 5:1 4:1 3:1 |
44 cm 60 cm 80 cm 100 cm 120 cm 150 cm 180 cm 200 cm |
·Carbon |
* We can also manufacture products to specifications other than those listed above, tailored to your specific needs.
■ Physical Properties
| Line / Ratio | Primary X-ray Transmittance (Tp) |
Bucky Factor (B) |
Contrast Improvement (K) |
Selectivity (S) |
Image Quality Factor (Q) |
|---|---|---|---|---|---|
| 31 Line / 5:1 | 76% | 1.73 | 1.36 | 4.00 | 1.10 |
| 36 Line / 5:1 | 75% | 1.75 | 1.38 | 4.10 | 1.06 |
| 41 Line / 5:1 | 74% | 1.78 | 1.40 | 4.20 | 1.04 |
*Test conditions: a. 35 kV, 50 mAs; b. focal range 0.1/0.3 mm; c. focal distance 60 cm; d. molybdenum filter
*Measuring instrument: Fluorescence meter *Compliant with IEC 60627 (3rd edition, 2001 amendment), Sections 5.1.4b, 5.2.1, and 5.2.3
