That stopped when the priests realized that most of the people couldn't actually use a quipu in that manner: the converts had to return to the quipu specialists to obtain a quipu and a list of sins that corresponded to the knots. After that, the Spanish worked to suppress the use of the quipu.
Average sonographer salary. An average hourly rate (wage) and the annual salary for sonographers in the United States is around $31.90 per hour and $66,360 per year.
The American Society of Radiologic Technologists provides more detailed numbers in the 2010 edition of its salary survey. The ASRT reports a median income of $66,593 per year for sonographers, and an average of $68,821.one densitometrists reported earning $54,280 per year, mammographers with associate degrees averaged $60,205 per year, and CT technologists earned $60,679 per year. Within the sonography profession, job title and seniority were more important factors than education in determining sonographers' salaries.