Making a Diagnosis At a Distance

By the Telecommunications Links

Dr Alexander ChangDepartment of Anatomical & Cellular

Pathology

The Chinese University of Hong Kong

What Is Telepathology?遠程病理學

• The practice of pathology at a distance

• Viewing images on a video monitor

• Using the telecommunication links

• For diagnosis, consultation or education

在一定距離間進行的病理學實踐﹐它應用遠程通訊技術﹐在錄像屏幕上觀察有關圖像﹐用于病理學診斷﹑會診﹑教學和研究﹐以及遠程會議﹑繼續教育。

What Is Telepathology?遠程病理學

Equipment Requirements in Telepathology遠程病理學診斷的基本設備

• A light microscope

• A high-resolution camera

• A workstation for the pathologist

• Access to a communications network•光學顯微鏡•高分辨率的攝像機或數碼相機•計算機工作站和遠程通訊網絡

Functions of Telepathology遠程病理學的圖像傳送方式

• Static or still image system

• Dynamic or live image system• 靜態或非同步的圖像傳送系統• 動態或同步的圖像傳送系統

Static or still image system靜態或非同步的圖像傳送系統

Static or still image system靜態或非同步的圖像傳送系統

Static or still image system靜態或非同步的圖像傳送系統

• Advantages:

– would wide access 全球範圍適用– simple and easy handling 簡單﹑容易操作– low-cost information transfer 費用低• Disadvantage:

– missing interactive discussion 不能進行相互間討論– potential sampling problems 診斷性視野選取的問題– missing control of quality of the received image

不能控制接收圖像的質量

Dynamic or live image system動態或同步的圖像傳送系統

Dynamic or live image system動態或同步的圖像傳送系統

Dynamic or live image system動態或同步的圖像傳送系統

• Advantages:– remote microscope control at a distance

– higher diagnostic accuracy

• Disadvantage:– high price of the system

據報導，動態圖像遠程診斷的準確性要高于靜態圖像，但此系統要求遠距離遙控的顯微鏡和寬帶的遠程通訊網絡﹐其設備和通訊費用昂貴 .

Telepatholgy Diagnostic Accuracy遠程病理學診斷的準確性

• The image quality• The computer hardware used capacity• Bandwidth of the telecommunications link• The observer specific experience and skills in

video monitor.• 圖像的質量• 計算機的硬件性能• 遠程通訊網絡的傳送速度• 病理醫生在屏幕診斷的經驗和技巧

Our Project On Telepathology• To evaluate the diagnostic accuracy• To establish a telepathology system

between Hongkong,Beijing, Shanghai and the other cities in China

• To facilitate consultation • To provide direct diagnostic services

from experts to distant clients and teaching

Thank You Very Much!