JUSHA

• The resolution of image captured from X-ray devices is very high. Medical monitors must have high resolution to fully show the details.

• Commercial monitors will lose a large number of pixels due to low resolution, causing misdiagnosis.

Medical Monitor Resolution

• 12MP=4200X2800
• 8MP=3840X2160
• 6MP=3280X2048
• 5MP=2560X2048=2048X2560
• 4MP=2560X1440=2560X1600
• 3MP=2048X1536=1536X2048
• 2MP=1600X1200=1200X1600
• 1MP=1280X1024=1024X1280

Commercial monitor resolution

• 1920X1200，1280X1024，1024X768，800X600

ACR (American college of Radiology) brightness requirements for medical monitors

• The resolution of image captured from X-ray devices is very high. Medical monitors must have high resolution to fully show the details.
• Commercial monitors will lose a large number of pixels due to low resolution, causing misdiagnosis.

High-brightness

• High brightness means that it is easier to see the difference between different gray levels. The brightness of medical monitors is higher, and the highest can reach 2500cd/m² now.

Stability

• To ensure the stability of the brightness during the service life, and have a brightness stability calibration system

Uniformity

• To ensure the consistency of brightness throughout the display area

Considering Ambient Light

• To consider the impact of ambient light on the diagnosis effect and make calibration

To highlight the most subtle differences 

Grayscale conversion

• 2^{(number of bits)} = Number of gray levels 
• 8-bit: 2⁸ =256 gray levels  
• 10-bit: 2¹⁰  =1024 gray levels 
• 12-bit: 2¹²  =4096 gray levels 
• 14-bit: 2¹⁴  =16384 gray levels 
• 16-bit: 2¹⁶  =65536 gray levels 

PACS era:

• The Same image at different locations and different locations and different times shows the same result.

How to guarantee?

✓ Constant brightness + unifies display calibration standard

DICOM 3.14:

DICOM3.0 standard require all medical monitors to meet the GSDF(grayscale standard display function) calibration standard defined in DICOM Part14.to ensure consistency.