A Cardiologist will never accept the diagnosis , if a technician reports a ECG as normal in a patient with chest pain . . .
While , the same cardiologist gleefully accepts an echocardiogram done by a technician and treats the patient without verifying the veracity of the finding !
Why ?
Some where along the cardiology training , we have been made to believe Interpreting Echo Images does not require serious medical knowledge . . . but we strongly believe ECG cannot be read by technicians however well they are trained .(In-spite of the fact , Echo images are highly dependent on the person who does it , while ECG wave forms are totally independent of the person who record it ! )
ECG, still has a prestigious place in cardiologist’s mind , while Echo is often considered an inferior Investigation. Many of us consider ECG interpretation as a brainy work while Echo image acquisition and interpretation is perceived a dumb job* !
Lastly , probably most importantly , performing Echo is a time intensive process for the present day cardiologist who’s hands are tied with catheters and guide-wires .He has little time for the meanly echo . . . hence ready to compromise on the quality .
* With due respects to all non invasive cardiologists (That includes the author !)
Final message
I would think it is fundamentally inappropriate for technician to report Echocardiogram (Of-course they may record it ) . Unfortunately , for some reason this practice is continued in many parts of world .
Dr.S.Venkatesan MD 
An Echo technician may report the findings, but the interpretation (which includes considerations of the history, symptoms and signs) should ideally be done by the cardiologist, because the cardiologist is able to distinguish the major problems from the minor details.
An ECG nowadays are even reported by the computer algorithm, which saves the doctor from remembering the various criteria for LVH etc, but a sound knowledge of ECG by the reading the doctor (who also took the history) would avoid simple mistakes such as a high-take off ST segment or limb lead reversals.
There is an often quoted alphorism I learned in ICU … “Trust no one, believe nothing”…